CN104956598B

CN104956598B - A kind of infomation detection and the method and device of transmission

Info

Publication number: CN104956598B
Application number: CN201380064611.6A
Authority: CN
Inventors: 官磊; 薛丽霞; 李强; 马瑞泽·大卫; 周永行
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-05-08
Filing date: 2013-05-08
Publication date: 2017-06-27
Anticipated expiration: 2033-05-08
Also published as: WO2014179955A1; CN104956598A

Abstract

The present invention relates to the field of mobile communication technologies, and in particular to a method and device for information detection and transmission, which are used to solve the problems of long time consumption, low efficiency and poor accuracy when UE determines the cell identity in the prior art. Problem: In the embodiment of the present invention, since each candidate time-frequency resource can be at any position of the center of the carrier, the possibility of overlapping any two candidate time-frequency resources is small, and the signals sent on any two candidate time-frequency resources The interference between them is small, therefore, the interference when the UE detects the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required for the UE to determine the cell identity is shortened, the efficiency of determining the cell identity is improved, and the determination of the The accuracy of the cell identification.

Description

Information detection and transmission method and device

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for detecting and transmitting information.

Background

With the development of communication technology, an LTE (Long Term Evolution) system is very important because of its advantages of improving the performance of cell edge users, increasing cell capacity, and reducing system delay. In the LTE system, in order to ensure mobility performance of a UE (User Equipment) so as to achieve appropriate cell reselection or cell handover, the UE needs to perform measurement on cell RRM (Radio Resource Management), for example, RRM measurement on reference signal reception power, RRM measurement on reference signal reception quality, or the like. Therefore, the mobility management function of RRM is an important component in LTE systems.

In the prior art, in a conventional homogeneous network, a specific execution process of cell RRM measurement performed by a UE in a connected state is as follows:

step a: the UE starts RRM measurement according to the instruction of an eNB (Evolved NodeB);

step b: the UE determines the cell identification of the cell through a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS);

step c: after the UE determines the Cell identifier, the UE performs RRM measurement using a Cell-specific Reference Signal (CRS) sent by a Cell corresponding to the Cell identifier, and reports a corresponding measurement result to the eNB;

step d: and the UE performs switching according to the instruction of the eNB, wherein the eNB determines whether to perform cell switching on the UE according to the measurement result reported by the UE.

As can be seen from the above implementation procedure, in a homogeneous network, a UE synchronizes with an eNB by detecting a PSS and an SSS transmitted by the eNB, and determines a PCI (Physical Cell Indicator), where the PSS provides 3 sequences and the SSS provides 168 sequence combinations in total through the combination of two short sequences, and thus 504 Cell identifications (i.e., 504 PCIs) can be provided in the prior art.

In the existing LTE system, the period for a base station to transmit the PSS and the SSS is 5ms, each time 2 OFDM (Orthogonal Frequency Division Multiplexing) symbols occupying 6 resource blocks in the center of a carrier are transmitted, and when the base station transmits the CRS, each subframe needs to transmit in a full Frequency band, generally occupies 2 or 4 resource units in 2 OFDM symbols of 1 resource block, and the resource position of a reference signal in one resource block in the existing LTE system is shown in fig. 1A.

With the development of LTE technology, a heterogeneous network is gradually emerging, and a main mode of the heterogeneous network is to deploy a large number of micro cells or Pico cells (Pico cells) in one Macro cell (Macro cell), where the Macro cell and the Pico cell may use the same frequency point deployment or different frequency point deployments (mainly, this mode is used in the prior art), where the Macro cell is mainly used to provide coverage and a service of a real-time data service, and the Pico cell is mainly used to provide a service of a high-rate data service. In a heterogeneous network, when a UE determines a cell identifier before performing RRM measurement, if the cell identifier is still determined according to a PSS and an SSS, the following defects may exist:

since deployed Pico cells in the prior art are dense and the sending periods of the PSS and the SSS are short, there are problems of long time consumption, low efficiency and poor accuracy when the UE determines the cell identifier according to the PSS and the SSS due to the fact that the UE receives the PSS and the SSS with large interference, and meanwhile, since the PSS or the SSS is sent on 2 OFDM symbols in 6 resource blocks in the carrier center, the probability of overlapping of occupied slot resources when the PSS or the SSS is sent is large, there is also a problem of large interference when the UE receives the PSS and the SSS, and further there are problems of long time consumption, low efficiency and poor accuracy when the UE determines the cell identifier according to the PSS and the SSS.

Disclosure of Invention

The embodiment of the invention provides a method and a device for detecting and sending information, which are used for solving the problems of longer time consumption, lower efficiency and poorer accuracy when UE determines a cell identifier according to a PSS and a SSS in the prior art.

In a first aspect, a method for detecting information is provided, including: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; detecting candidate scrambling code sequences and candidate orthogonal code sequence groups included in the determined sequence information corresponding to the at least one candidate time frequency resource on the at least one candidate time frequency resource to obtain actual orthogonal code sequences in the actual scrambling code sequences and the actual orthogonal code sequence groups; determining a cell identity based at least on the detected actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the first aspect, in a first possible implementation manner, the candidate time-frequency resource is at least one CSI-RS resource of a first antenna port; or, the candidate time-frequency resource is an orthogonal frequency division multiplexing OFDM symbol where the at least two secondary synchronization signals SSS are located.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the at least one candidate time-frequency resource is a different time-frequency resource within one subframe; or, the at least one candidate time-frequency resource is a time-frequency resource in a different subframe.

With reference to the first aspect or the first to second possible implementation manners of the first aspect, in a third possible implementation manner, the obtaining at least one candidate time-frequency resource specifically includes: pre-storing the at least one candidate time-frequency resource; or, the at least one candidate time-frequency resource is obtained according to the received signaling sent by the base station.

With reference to the first aspect or the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the determining sequence information corresponding to the at least one candidate time-frequency resource specifically includes: pre-storing sequence information corresponding to the at least one candidate time frequency resource; or, obtaining the sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station.

With reference to the first aspect or the first to four possible implementation manners of the first aspect, in a fifth possible implementation manner, the candidate scrambling code sequence is a pseudo-random sequence or an initialization sequence of the pseudo-random sequence; the set of candidate orthogonal code sequences is a set of Walsh sequences.

With reference to the first aspect or the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner, for a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information, the candidate scrambling code sequence is a sequence generated in a frequency domain direction of a candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequences in the candidate orthogonal code sequence group are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of the candidate time frequency resources.

With reference to the first aspect or the first to sixth possible implementation manners of the first aspect, in a seventh possible implementation manner, detecting, on the at least one candidate time-frequency resource, a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource, to obtain an actual orthogonal code sequence in an actual scrambling code sequence and an actual orthogonal code sequence group, specifically includes: and judging the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and when the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource is matched with the candidate orthogonal code sequence in the candidate orthogonal code sequence group, taking the matched candidate scrambling code sequence and candidate orthogonal code sequence as an actual scrambling code sequence and an actual orthogonal code sequence.

With reference to the first aspect or the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner, the determining a cell identifier according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence specifically includes: determining a cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or, determining the cell identifier according to the detected actual scrambling code sequence, the detected actual orthogonal code sequence, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the first aspect or the first to eight possible implementation manners of the first aspect, in a ninth possible implementation manner, the candidate time-frequency resources include N time-frequency sub-resources, and each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

With reference to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner, the candidate scrambling code sequence is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resources corresponding to the sequence information; and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information.

With reference to the ninth or tenth possible implementation manner of the first aspect, in an eleventh possible implementation manner, the detecting, on the candidate time-frequency resource, a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the candidate time-frequency resource to obtain an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group specifically includes: and detecting a corresponding candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

With reference to the eleventh possible implementation manner of the first aspect, in a twelfth possible implementation manner, the determining a cell identifier according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence specifically includes: determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource; or, determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the detected actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, and the detected actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the ninth to twelfth possible implementation manners of the first aspect, in a thirteenth possible implementation manner, the candidate time-frequency resources include a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal to each other.

With reference to the thirteenth possible implementation manner of the first aspect, in a fourteenth possible implementation manner, the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of the CSI-RS resources of the at least two second antenna ports, and the second group of time-frequency sub-resources includes all or part of each CSI-RS resource of the CSI-RS resources of the at least two second antenna ports.

With reference to the first aspect or the ninth to fourteenth possible implementation manners of the first aspect, in a fifteenth possible implementation manner, at least two of the candidate time-frequency resources partially overlap with each other; and/or at least two time frequency sub-resources are partially overlapped with each other.

With reference to the first aspect or the first to fifteenth possible implementation manners of the first aspect, in a sixteenth possible implementation manner, one or any combination of channel state information measurement, synchronization, and RRM measurement for radio resource management is performed by using CSI-RSs sent on time-frequency sub-resources on actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence group.

With reference to the first aspect or the first to sixteen possible implementation manners of the first aspect, in a seventeenth possible implementation manner, the configuration information of the cell corresponding to the cell identifier is determined according to the detected actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes one or any combination of a switch, an active/dormant state, a transmission power level, a carrier type, and a duplex type of the corresponding cell.

With reference to the first aspect or the first to seventeenth possible implementations of the first aspect, in an eighteenth possible implementation, a synchronization channel is detected to obtain a synchronization sequence; acquiring the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position of the synchronization sequence; or, determining a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or determining the candidate scrambling codes and/or the channel estimation information of the candidate orthogonal codes according to the obtained synchronization sequences.

In a second aspect, a method for sending information is provided, including: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; determining an actual time frequency resource from the at least one candidate time frequency resource, and determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in sequence information corresponding to the actual time frequency resource; and sending the actual scrambling code sequence and the actual orthogonal code sequence to User Equipment (UE) on the actual time-frequency resource, and enabling the UE to determine a cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the second aspect, in a first possible implementation manner, the candidate time-frequency resource is at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is an orthogonal frequency division multiplexing OFDM symbol where the at least two secondary synchronization signals SSS are located.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the at least one candidate time-frequency resource is a different time-frequency resource within one subframe; or, the at least one candidate time-frequency resource is a time-frequency resource in a different subframe.

With reference to the second aspect or the first to second possible implementation manners of the second aspect, in a third possible implementation manner, the candidate scrambling code sequence is a pseudo-random sequence or an initialization sequence of the pseudo-random sequence; the set of candidate orthogonal code sequences is a set of Walsh sequences.

With reference to the second aspect or the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, for the actual scrambling code sequence and the actual orthogonal code sequence, the actual scrambling code sequence is generated in a frequency domain direction of the actual time-frequency resource; and in the time domain direction of the actual time frequency resource, the generated actual scrambling code sequence is subjected to spread spectrum by using the actual orthogonal code sequence.

With reference to the second aspect, or the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner, causing the UE to determine a cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence specifically includes: enabling the UE to determine a cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the second aspect or the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner, the candidate time-frequency resources include N time-frequency sub-resources, and each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

With reference to the second aspect or the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner, in a frequency domain direction of each time-frequency sub-resource in the actual time-frequency resources, an actual scrambling code sequence corresponding to each time-frequency sub-resource is generated respectively; and respectively spreading the generated actual scrambling code sequence corresponding to each time-frequency sub-resource by using the actual orthogonal code sequence corresponding to each time-frequency sub-resource in the time domain direction of each time-frequency sub-resource in the actual time-frequency resources.

With reference to the second aspect or the first to seventh possible implementation manners of the second aspect, in an eighth possible implementation manner, the sending, to the UE, the actual scrambling code sequence and the actual orthogonal code sequence on the actual time-frequency resource specifically includes: and sending an actual scrambling code sequence corresponding to the actual time-frequency resource to the UE on each time-frequency sub-resource in the actual time-frequency resources, and sending an actual orthogonal code sequence in an actual orthogonal code sequence group corresponding to the time-frequency sub-resources on each time-frequency sub-resource in the actual time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the actual orthogonal code sequence group.

With reference to the second aspect, or the first to eight possible implementation manners of the second aspect, in a ninth possible implementation manner, causing the UE to determine a cell identifier according to at least the actual scrambling code sequence and the actual orthogonal code sequence specifically includes: enabling the UE to determine a cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the sixth to ninth possible implementation manners of the second aspect, in a tenth possible implementation manner, the candidate time-frequency resources include a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal to each other.

With reference to the tenth possible implementation manner of the second aspect, in an eleventh possible implementation manner, the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of the CSI-RS resources of the at least two second antenna ports, and the second group of time-frequency sub-resources includes all or part of each CSI-RS resource of the CSI-RS resources of the at least two second antenna ports.

With reference to the tenth or eleventh possible implementation manner of the second aspect, in a twelfth possible implementation manner, at least two of the candidate time-frequency resources are partially overlapped with each other; and/or at least two time frequency sub-resources are partially overlapped with each other.

With reference to the second aspect, or the first to twelfth possible implementation manners of the second aspect, in a thirteenth possible implementation manner, the UE is enabled to determine configuration information of a cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes one or any combination of a switch, an active/dormant state, a transmission power level, a carrier type, and a duplex type of the corresponding cell.

With reference to the second aspect or the first to thirteen possible implementations of the second aspect, in a fourteenth possible implementation, the synchronization sequence is sent on a synchronization channel; enabling the UE to acquire the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position where the synchronization sequence is located; or, the UE determines a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or, the UE determines the channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.

In a third aspect, a user equipment UE is provided, including: the device comprises a first determining unit, a second determining unit and a third determining unit, wherein the first determining unit is used for acquiring at least one candidate time-frequency resource and respectively determining sequence information corresponding to the at least one candidate time-frequency resource, and the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; a detecting unit, configured to detect, on the at least one candidate time-frequency resource, a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource, and obtain an actual orthogonal code sequence in an actual scrambling code sequence and an actual orthogonal code sequence group; a second determining unit, configured to determine a cell identifier at least according to the detected actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the third aspect, in a first possible implementation manner, the candidate time-frequency resource obtained by the first determining unit is at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency resources obtained by the first determining unit are orthogonal frequency division multiplexing OFDM symbols where the at least two secondary synchronization signals SSS are located.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the at least one candidate time-frequency resource obtained by the first determining unit is a different time-frequency resource in one subframe; or, the at least one candidate time-frequency resource acquired by the first determining unit is a time-frequency resource in different subframes.

With reference to the third aspect or the first to second possible implementation manners of the third aspect, in a third possible implementation manner, the obtaining, by the first determining unit, at least one candidate time-frequency resource specifically includes: pre-storing the at least one candidate time-frequency resource; or, the at least one candidate time-frequency resource is obtained according to the received signaling sent by the base station.

With reference to the third aspect, or the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner, the determining, by the first determining unit, sequence information corresponding to the at least one candidate time-frequency resource specifically includes: pre-storing sequence information corresponding to the at least one candidate time frequency resource; or, obtaining the sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station.

With reference to the third aspect, or the first to fourth possible implementation manners of the third aspect, in a fifth possible implementation manner, the candidate scrambling code sequence determined by the first determining unit is a pseudo-random sequence, or an initialization sequence of the pseudo-random sequence; the candidate orthogonal code sequence set determined by the first determining unit is a Walsh sequence set.

With reference to the third aspect, or the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner, for a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information determined by the first determining unit, the candidate scrambling code sequence is a sequence generated in a frequency domain direction of a candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequences in the candidate orthogonal code sequence group are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of the candidate time frequency resources.

With reference to the third aspect, or the first to sixth possible implementation manners of the third aspect, in a seventh possible implementation manner, the detecting unit is specifically configured to: and judging the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and when the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource is matched with the candidate orthogonal code sequence in the candidate orthogonal code sequence group, taking the matched candidate scrambling code sequence and candidate orthogonal code sequence as an actual scrambling code sequence and an actual orthogonal code sequence.

With reference to the third aspect, or the first to seventh possible implementation manners of the third aspect, in an eighth possible implementation manner, the determining unit is specifically configured to: determining a cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or, determining the cell identifier according to the detected actual scrambling code sequence, the detected actual orthogonal code sequence, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the third aspect or the first to eight possible implementation manners of the third aspect, in a ninth possible implementation manner, the candidate time-frequency resources determined by the first determining unit include N time-frequency sub-resources, and each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 35.

With reference to the ninth possible implementation manner of the third aspect, in a tenth possible implementation manner, the candidate scrambling code sequence determined by the first determining unit is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resources corresponding to the sequence information; the candidate orthogonal code sequences in the candidate orthogonal code sequence group determined by the first determining unit are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resources corresponding to the sequence information.

With reference to the ninth or tenth possible implementation manner of the third aspect, in an eleventh possible implementation manner, the detecting unit is specifically configured to: and detecting a corresponding candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

With reference to the eleventh possible implementation manner of the third aspect, in a twelfth possible implementation manner, the determining unit is specifically configured to: determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource; or, determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the detected actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, and the detected actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the ninth to twelfth possible implementation manners of the third aspect, in a thirteenth possible implementation manner, the candidate time-frequency resources obtained by the first determining unit include a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal to each other.

With reference to the thirteenth possible implementation manner of the third aspect, in a fourteenth possible implementation manner, the first group of time-frequency sub-resources includes all or part of each CSI-RS resource of the CSI-RS resources of the at least two second antenna ports, and the second group of time-frequency sub-resources includes all or part of each CSI-RS resource of the CSI-RS resources of the at least two second antenna ports.

With reference to the third aspect or ninth to fourteenth possible implementation manners of the third aspect, in a fifteenth possible implementation manner, the at least two candidate time-frequency resources obtained by the first determining unit partially overlap with each other; and/or at least two time frequency sub-resources are partially overlapped with each other.

With reference to the third aspect or the first to fifteenth possible implementation manners of the third aspect, in a sixteenth possible implementation manner, the apparatus further includes a communication unit, where the communication unit is specifically configured to perform one or any combination of channel state information measurement, synchronization, and RRM measurement on CSI-RS sent on time-frequency sub-resources on actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence group.

With reference to the third aspect, or the first to sixteen possible implementation manners of the third aspect, in a seventeenth possible implementation manner, the determining unit is specifically configured to: and determining configuration information of a cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

With reference to the third aspect, or the first to seventeenth possible implementation manners of the third aspect, in an eighteenth possible implementation manner, the obtaining unit is further configured to: detecting a synchronous channel to obtain a synchronous sequence; acquiring the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position of the synchronization sequence; or, determining a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or determining the candidate scrambling codes and/or the channel estimation information of the candidate orthogonal codes according to the obtained synchronization sequences.

In a fourth aspect, a base station is provided, comprising: the device comprises a first acquisition unit, a second acquisition unit and a third acquisition unit, wherein the first acquisition unit is used for acquiring at least one candidate time-frequency resource and respectively determining sequence information corresponding to the at least one candidate time-frequency resource, and the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; a second obtaining unit, configured to determine an actual time-frequency resource from the at least one candidate time-frequency resource obtained by the first obtaining unit, and determine an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in sequence information corresponding to the actual time-frequency resource, respectively; a sending unit, configured to send the actual scrambling code sequence and the actual orthogonal code sequence determined by the second obtaining unit to a user equipment UE on the actual time-frequency resource determined by the second obtaining unit, so that the UE determines a cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the second aspect, in a first possible implementation manner, the candidate time-frequency resource acquired by the first acquiring unit is at least one CSI-RS resource of the first antenna port; or the candidate time-frequency resources acquired by the first acquisition unit are orthogonal frequency division multiplexing OFDM symbols where the at least two secondary synchronization signals SSS are located.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the at least one candidate time-frequency resource acquired by the first acquiring unit is a different time-frequency resource in one subframe; or, the at least one candidate time-frequency resource acquired by the first acquiring unit is a time-frequency resource in different subframes.

With reference to the second aspect or the first to second possible implementation manners of the second aspect, in a third possible implementation manner, the candidate scrambling code sequence determined by the first obtaining unit is a pseudo-random sequence or an initialization sequence of the pseudo-random sequence; the candidate orthogonal code sequence set determined by the first acquisition unit is a Walsh sequence set.

With reference to the second aspect or the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, the actual scrambling code sequence is generated in the frequency domain direction of the actual time-frequency resource for the actual scrambling code sequence and the actual orthogonal code sequence determined by the second obtaining unit; and in the time domain direction of the actual time frequency resource, the generated actual scrambling code sequence is subjected to spread spectrum by using the actual orthogonal code sequence.

With reference to the second aspect, or the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner, the sending unit is specifically configured to: enabling the UE to determine a cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the second aspect or the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner, the candidate time-frequency resources obtained by the first obtaining unit include N time-frequency sub-resources, and each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

With reference to the second aspect, or the first to seventh possible implementation manners of the second aspect, in an eighth possible implementation manner, the sending unit is specifically configured to: and sending an actual scrambling code sequence corresponding to the actual time-frequency resource to the UE on each time-frequency sub-resource in the actual time-frequency resources, and sending an actual orthogonal code sequence in an actual orthogonal code sequence group corresponding to the time-frequency sub-resources on each time-frequency sub-resource in the actual time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the actual orthogonal code sequence group.

With reference to the second aspect, or the first to eight possible implementation manners of the second aspect, in a ninth possible implementation manner, the sending unit is specifically configured to: enabling the UE to determine a cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

With reference to the sixth to ninth possible implementation manners of the second aspect, in a tenth possible implementation manner, the candidate time-frequency resources obtained by the first obtaining unit include a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal to each other.

With reference to the tenth or eleventh possible implementation manner of the second aspect, in a twelfth possible implementation manner, the at least two candidate time-frequency resources acquired by the first acquiring unit are partially overlapped with each other; and/or at least two time frequency sub-resources acquired by the first acquisition unit are partially overlapped with each other.

With reference to the second aspect, or the first to twelfth possible implementation manners of the second aspect, in a thirteenth possible implementation manner, the sending unit is further configured to: and enabling the UE to determine configuration information of a cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

With reference to the second aspect, or the first to thirteen possible implementations of the second aspect, in a fourteenth possible implementation, the first obtaining unit is further configured to: transmitting a synchronization sequence on a synchronization channel; enabling the UE to acquire the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position where the synchronization sequence is located; or, the UE determines a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence, and the actual orthogonal code sequence; or, the UE determines the channel estimation information of the candidate scrambling code and/or the candidate orthogonal code according to the obtained synchronization sequence.

In an embodiment of the present invention, a method for detecting and transmitting information is provided, wherein,

the information detection method comprises the following steps: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; detecting candidate scrambling code sequences and candidate orthogonal code sequence groups included in the determined sequence information corresponding to at least one candidate time frequency resource on at least one candidate time frequency resource to obtain actual orthogonal code sequences in the actual scrambling code sequences and the actual orthogonal code sequence groups; the cell identification is determined at least according to the detected actual scrambling code sequence and the actual orthogonal code sequence, so that, because each candidate time-frequency resource can be at any position of the carrier center, even can not be limited in 6 resource blocks of the carrier center, the possibility of overlapping any two candidate time-frequency resources is low, the interference between signals transmitted on any two candidate time-frequency resources is low, therefore, the interference when the UE detects the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required by the UE to determine the cell identification is shortened, the efficiency of determining the cell identification is improved, and the accuracy of the determined cell identification is low, meanwhile, the cell identification is determined by the actually detected scrambling code sequence and the actually detected orthogonal code sequence, and the scrambling code sequence and the actually detected orthogonal code sequence can both reduce the interference, thereby further solving the problem in a heterogeneous network, when the UE determines the cell identifier, the problems of long time consumption, low efficiency and poor accuracy exist;

the information sending method comprises the following steps: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; determining an actual time frequency resource from at least one candidate time frequency resource, and respectively determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group which are included in sequence information corresponding to the actual time frequency resource; in the actual time frequency resource, the actual scrambling code sequence and the actual orthogonal code sequence are sent to the user equipment UE, and the UE is enabled to determine the cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence, so that the possibility of overlapping any two candidate time frequency resources is low, and the interference between signals sent on any two candidate time frequency resources is low, therefore, the interference when the base station sends the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required by the UE to determine the cell identifier is shortened, the efficiency of determining the cell identifier is improved, and the accuracy of the determined cell identifier is improved, and meanwhile, the cell identifier is determined through the sent actual scrambling code sequence and the actual orthogonal code sequence, the scrambling code sequence and the orthogonal code sequence can reduce interference, so that the problems of long time consumption, low efficiency and poor accuracy when the UE determines the cell identifier in the heterogeneous network are further solved.

Drawings

Fig. 1A is a schematic diagram of a resource location of a reference signal in a resource block in an existing LTE system;

FIG. 1B is a schematic diagram of the A time-frequency resources including A1 and A2 time-frequency sub-resources according to the embodiment of the present invention;

FIG. 1C is a schematic diagram of a B time-frequency resource including B1 and B2 time-frequency sub-resources according to an embodiment of the present invention;

FIG. 2 is a detailed flow chart of information detection in an embodiment of the present invention;

fig. 3A is a schematic diagram of a resource location of a reference signal in a resource block in an LTE system according to an embodiment of the present invention;

FIG. 3B is a diagram illustrating ambiguity in the coexistence of sequence information and CSI-RS according to an embodiment of the present invention;

FIG. 3C is a diagram illustrating coexistence of sequence information and CSI-RS without ambiguity in an embodiment of the present invention;

FIG. 4 is a detailed flow chart of message sending in an embodiment of the present invention;

FIG. 5 is a functional structure diagram of a UE for information detection according to an embodiment of the present invention;

fig. 6 is a functional structure diagram of a base station for information transmission according to an embodiment of the present invention.

Detailed Description

In order to solve the problems of long time consumption, low efficiency and poor accuracy when the UE determines the cell identifier in the heterogeneous network, the embodiment of the invention provides an information detection method and an information transmission method, which can effectively avoid the problems of long time consumption, low efficiency and poor accuracy when the UE determines the cell identifier.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 2, in the embodiment of the present invention, a detailed flow of information detection is as follows:

the first embodiment is as follows:

step 200: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group;

step 210: detecting candidate scrambling code sequences and candidate orthogonal code sequence groups included in the determined sequence information corresponding to at least one candidate time frequency resource on at least one candidate time frequency resource to obtain actual orthogonal code sequences in the actual scrambling code sequences and the actual orthogonal code sequence groups;

step 220: a cell identity is determined based at least on the detected actual scrambling code sequence and the actual orthogonal code sequence.

In the embodiment of the present invention, in step 200, the UE may obtain multiple types of candidate time-frequency resources, and preferably, the candidate time-frequency resources are at least one CSI-RS (Channel State Information-ReferenceSignal) resource of the first antenna port; or, the candidate time-frequency resource is an OFDM symbol where at least two SSSs are located.

When the candidate time-frequency resource is at least one CSI-RS of the first antenna port, because the CSI-RS resource of the 8 antenna ports of the first antenna port has the largest resource units, preferably, the candidate time-frequency resource is at least one CSI-RS resource of the 8 antenna ports of the first antenna port, as shown in fig. 1A, a and B, that is, a and B are combined to form one CSI-RS resource of the 8 antenna ports. In practical application, different cells can select different CSI-RS resources with 8 antenna ports, so that interference coordination can be realized for reference signals of different cells, the detection performance of the reference signals is enhanced, the resource positions of the existing CSI-RS can be multiplexed, and the system design and the realization complexity are simplified.

In practical applications, the candidate time-frequency resource may also be a CSI-RS resource of other antenna ports (for example, 4 antenna ports or less), or may be an OFDM symbol where at least two SSS are located.

In the embodiment of the present invention, in step 200, the at least one candidate time-frequency resource obtained by the UE may be different time-frequency resources within one subframe, for example, different CSI-RS resources of 8 antenna ports within one subframe; time-frequency resources in different subframes, for example, CSI-RS resources of 8 antenna ports of subframe 1 and CSI-RS resources of 8 antenna ports of subframe 2, may also be used.

In the embodiment of the present invention, in step 200, there are multiple manners for the UE to obtain at least one candidate time-frequency resource, for example, at least one candidate time-frequency resource may be pre-stored in the UE, and for example, the UE may obtain at least one candidate time-frequency resource according to a received signaling sent by the base station, where the signaling sent by the base station may be a Radio Resource Control (RRC) signaling, a Medium Access Control (MAC) layer signaling, or a physical layer signaling (e.g., a physical downlink Control channel).

Similarly, in step 200, there are various ways for the UE to determine the sequence information corresponding to the at least one candidate time-frequency resource, for example, the sequence information corresponding to the at least one candidate time-frequency resource is pre-stored in the UE, and for example, the sequence information corresponding to the at least one candidate time-frequency resource is obtained according to a received signaling sent by the base station, where the signaling sent by the base station may be an RRC signaling, an MAC layer signaling, or a physical layer signaling (e.g., a physical downlink control channel, etc.).

In the embodiment of the present invention, the candidate scrambling code sequence has multiple types, and preferably, is a pseudo-random sequence, or an initialization sequence of the pseudo-random sequence, or an initialization parameter in the initialization sequence, where when the candidate scrambling code sequence is the pseudo-random sequence, the candidate scrambling code sequence may be an M sequence, or may also be a Gold sequence.

For example, when the Gold sequence is shown in formula one, the candidate scrambling code sequence may be formula one, or may be an initialization sequence of the Gold sequence, that is, formula two, or may be an initialization parameter in the initialization sequence, that is, the initialization parameter is formula two

Wherein r represents a Gold sequence; n is_sA slot number (one subframe includes two slots); l is the OFDM symbol serial number in a time slot; n is the number of resource blocks; j is the imaginary identification of the complex number; c is a generating function determined by the shift register; and isAndare all M sequences.

Wherein, c_initAn initialization sequence representing a Gold sequence;to initialize the parameters.

In the embodiment of the present invention, there are various types of candidate orthogonal code sequence sets, and preferably, the candidate orthogonal code sequence set is a Walsh sequence set.

For example, the Walsh sequence set is a binary sequence set, and includes two orthogonal code sequences of {1, 1} and {1, -1}, respectively, and the candidate orthogonal code sequence set is ({1, 1}, {1, -1 }).

In the embodiment of the present invention, the Walsh sequence group may be a binary code group, a quaternary code group, or an eight-ary code group, where any two Walsh sequence groups may be sequence groups with the same dimension, or sequence groups with different dimensions, for example, the Walsh sequence group corresponding to one candidate time-frequency resource is a binary code group, and the Walsh sequence group corresponding to another candidate time-frequency resource is a quaternary code group. Each candidate time-frequency resource corresponds to sequence information, and the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group, so that each candidate time-frequency resource bears at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; the candidate orthogonal code sequences in the candidate orthogonal code sequence group are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of the candidate time-frequency resource corresponding to the sequence information, and specifically include: for a certain OFDM symbol, the scrambling sequence is a sequence generated on a plurality of resource blocks including the OFDM symbol, and the orthogonal code sequence is a sequence generated by spreading the generated scrambling sequence in the time domain direction on the OFDM subcarrier of each resource unit, that is, for a certain OFDM symbol, the scrambling sequence is generated on a plurality of resource blocks including the OFDM symbol first, and then the orthogonal code spreading in the time domain direction is performed on the scrambling sequence on the OFDM subcarrier of each resource unit, wherein the specific generation process is performed by the base station.

For example, for a certain OFDM symbol, a scrambling sequence is generated on a plurality of resource blocks including the OFDM symbol, for example, on the central 6 resource blocks on one OFDM symbol or all resource blocks on the carrier, and then orthogonal code spreading in the time domain direction is performed on the scrambling sequence. In this embodiment, if the number of resource blocks including the OFDM symbol is 100 (where each resource block in 100 resource blocks has one resource unit for carrying the scrambling code), the length of the frequency domain scrambling code sequence is 100, and then, for each resource unit in 100 resource units carrying the scrambling code sequence, time domain spreading is performed by using an orthogonal sequence code, in this case, if the orthogonal sequence code is a binary orthogonal sequence code, the spreading result is that the scrambling code sequence may occupy two OFDM symbols in the time domain.

The above embodiment is only a preferred embodiment, and in practical applications, there are many other methods, which are not described in detail herein.

In step 210, in the embodiment of the present invention, the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the sequence information corresponding to the at least one candidate time-frequency resource, which is detected and determined on the at least one candidate time-frequency resource, may be an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group, or may be an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group.

In step 210, in the embodiment of the present invention, there are multiple ways to detect the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to at least one candidate time frequency resource on at least one candidate time frequency resource, and obtain or select the actual orthogonal code sequence in the actual scrambling code sequence group and the actual orthogonal code sequence group. When judging whether the combination of the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is matched or not, the maximum likelihood detection algorithm can be adopted, and a correlation algorithm can also be adopted.

For example, the two candidate time-frequency resources obtained or selected are respectively: the first candidate time frequency resource and the second candidate time frequency resource, the sequence information corresponding to the first candidate time frequency resource includes a first scrambling code sequence, a second scrambling code sequence and a binary Walsh sequence group ({1, 1}, {1, -1}), the sequence information corresponding to the second candidate time frequency resource includes a third scrambling code sequence, a fourth scrambling code sequence and a binary Walsh sequence group ({1, 1}, {1, -1}), the scrambling code sequence and the orthogonal code sequence in the orthogonal code sequence group sent by the base station and received by the UE on the first candidate time frequency resource are respectively matched with the first combination, the second combination, the third combination and the fourth combination, the scrambling code sequence and the orthogonal code sequence in the orthogonal code sequence group sent by the base station and received by the UE on the second candidate time frequency resource are respectively matched with the fifth combination, the sixth combination, the seventh combination and the eighth combination, and taking the candidate scrambling code sequence and the candidate orthogonal code sequence included in the matched combination as an actual scrambling code sequence and an actual orthogonal code sequence respectively, wherein the first combination is (a first scrambling code sequence + a Walsh sequence {1, 1}), the second combination is (a first scrambling code sequence + a Walsh sequence {1, -1}), the third combination is (a second scrambling code sequence + a Walsh sequence {1, 1}), the fourth combination is (a second scrambling code sequence + a Walsh sequence {1, -1}), the fifth combination is (a third scrambling code sequence + a Walsh sequence {1, 1}), the sixth combination is (a third scrambling code sequence + a Walsh sequence {1, -1}), the seventh combination is (a fourth scrambling code sequence + a Walsh sequence {1, 1}), and the eighth combination is (a fourth scrambling code sequence + a Walsh sequence {1, -1 }).

In the embodiment of the present invention, in step 220, there are multiple ways of determining the cell identifier at least according to the detected actual scrambling code sequence and actual orthogonal code sequence, and preferably, the cell identifier is determined according to the detected actual scrambling code sequence and actual orthogonal code sequence, or the cell identifier is determined according to the detected actual scrambling code sequence, actual orthogonal code sequence, and actual time-frequency resources occupied by the actual scrambling code sequence and actual orthogonal code sequence.

For example, the two actual time frequency resources obtained or selected are: the actual scrambling code sequence group carried on each actual time frequency resource is a group of binary Walsh sequence groups ({1, -1}), {1, 1}), wherein the actual scrambling code sequence is a candidate scrambling code sequence obtained or selected by adopting a maximum likelihood detection algorithm or a correlation algorithm from the candidate scrambling code sequences, the actual orthogonal code sequence is a candidate orthogonal code sequence obtained or selected by adopting the maximum likelihood detection algorithm or the correlation algorithm from the candidate orthogonal code sequences, the actual time frequency resource is the candidate time frequency resource where the actual scrambling code sequence and the actual orthogonal code sequence are located, and the cell identification which can be determined by the UE is at most 8, the method specifically comprises the following steps: (0+ {1, 1}), (0+ {1, -1}), (1+ {1, -1}), (2+ {1, -1}), (3+ {1, -1 }).

For example, the two actual time frequency resources obtained or selected are: the actual scrambling code sequence group carried on each actual time-frequency resource is a group of binary Walsh sequence groups ({1, -1}), {1, 1}), wherein the actual scrambling code sequence is a candidate scrambling code sequence obtained or selected by adopting a maximum likelihood detection algorithm or a correlation algorithm from the candidate scrambling code sequences, the actual orthogonal code sequence is a candidate orthogonal code sequence obtained or selected by adopting the maximum likelihood detection algorithm or the correlation algorithm from the candidate orthogonal code sequences, the actual time-frequency resource is the candidate time-frequency resource where the actual scrambling code sequence and the actual orthogonal code sequence are located, and the cell identification which can be determined by the UE is at most 8, the method specifically comprises the following steps: (first real time-frequency resource +0+ {1, 1}), (first real time-frequency resource +0+ {1, -1}), (first real time-frequency resource +1+ {1, -1}), (second real time-frequency resource +0+ {1, -1}), (second real time-frequency resource +1+ {1, -1 }).

In the embodiment of the invention, the interference between the cells is reduced through the orthogonalization design, and the multiplexing rate of time-frequency resources is improved under the condition of providing a certain number of cell identifications through the pseudo-orthogonalization design.

For example, several adjacent cells form a cell cluster 1, and several other different adjacent cells form a cell cluster 2, the above orthogonalization design may be adopted between the cells included in the cell cluster 1 to reduce the interference between the cells included in the cell cluster 1, the orthogonalization design includes multiple orthogonal sequence codes in one orthogonal sequence code group, or, if the number of orthogonal sequence codes is not enough, different candidate time frequency resources may also be used to design the orthogonal sequence codes; the cells included in the cell cluster 2 can be designed to be pseudo-orthogonal, and the reuse rate of time-frequency resources is improved under the condition of providing a certain number of cell identifications.

Further, in the embodiment of the present invention, the candidate time-frequency resources include N time-frequency sub-resources, each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

For example, one candidate time-frequency resource is a CSI-RS resource of an 8-antenna port, and the CSI-RS resource of the 8-antenna port includes 4 time-frequency sub-resources, and the time-frequency sub-resources are frequency-divided, as shown in fig. 1, a and B, where a includes 2 time-frequency sub-resources: a1 time-frequency sub-resources and a2 time-frequency sub-resources (as shown in fig. 1B), where B includes 2 time-frequency sub-resources: b1 and B2 time-frequency sub-resources (as shown in fig. 1C).

In the embodiment of the invention, if the candidate time frequency resources comprise N time frequency sub-resources, the candidate scrambling code sequence is a sequence generated in the frequency domain direction of each time frequency sub-resource of the candidate time frequency resources corresponding to the sequence information; and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of each time frequency sub-resource of the candidate time frequency resource corresponding to the sequence information.

Similarly, if the candidate time-frequency resource includes N time-frequency sub-resources, detecting a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the candidate time-frequency resource on the candidate time-frequency resource, and when obtaining an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group, detecting a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource on each time-frequency sub-resource of the candidate time-frequency resource, and obtaining an actual scrambling code sequence, and detecting a corresponding candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resource according to a corresponding relationship between the time-frequency sub-resource and the candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

Further, if the candidate time-frequency resources include N time-frequency sub-resources, when the cell identifier is determined at least according to the detected actual scrambling code sequence and the actual orthogonal code sequence, the cell identifier is determined at least according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource; or, determining the cell identifier at least according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, and the actual time-frequency sub-resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

In order to improve the accuracy of obtaining the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group, reduce the complexity, reduce the number of time-frequency sub-resources included in the candidate time-frequency resources, and simultaneously limit the number of the orthogonal code sequence group. With reference to a and B shown in fig. 1A, a may include a1 and a2 shown in fig. 1B, or may not include any time-frequency sub-resource, and similarly, B may include B1 and B2 shown in fig. 1C, or may not include any time-frequency sub-resource.

Further, in order to reduce interference between cells corresponding to a certain cell identifier, increase the reuse rate of time-frequency resources, and provide more cell identifiers, in an embodiment of the present invention, the candidate time-frequency resources include a first time-frequency sub-resource group and a second time-frequency sub-resource group, where the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal to each other, in the above case, by making candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group be orthogonal to each other, interference between cells can be reduced, by making candidate orthogonal code sequences corresponding to the time-frequency sub, the reuse rate of time frequency resources can be improved, and more cell identifications can be provided.

For example, one candidate time-frequency resource C shown in fig. 3A is divided into two time-frequency sub-resources, each time-frequency sub-resource has two orthogonal code sequences, and 4 kinds of sequence information are provided in total, as shown in fig. 3B, where possible orthogonal sequence codes respectively provided by AP ID 0 and AP ID 3 are orthogonal, that is, two orthogonal code sequences corresponding to the first time-frequency sub-resource are the same, and two orthogonal code sequences corresponding to the second time-frequency sub-resource are also the same; the possible orthogonal sequence codes respectively provided by the AP ID 0 and the AP ID 1 are not completely orthogonal, that is, two orthogonal sequences corresponding to the first time-frequency sub-resource are the same, and two orthogonal sequences corresponding to the second time-frequency sub-resource are orthogonal, at this time, the scrambling code sequences corresponding to the candidate time-frequency sub-resource may be the same or pseudo-orthogonal, and if the scrambling code sequences are pseudo-orthogonal, the reference signals corresponding to different cells are pseudo-orthogonal even if the orthogonal code sequences are the same. Because the possible orthogonal sequence codes respectively provided by the AP ID 0 and the AP ID 1 are not completely orthogonal, the candidate time-frequency resources combined by the time-frequency sub-resources are partially orthogonal to each other, and compared with the completely orthogonal design (AP ID 0 and AP ID 3), the bearing efficiency of the cell identifier can be improved. In practical application, the method of limiting codeword combination is adopted, so that the bearing efficiency of the cell identifier can be improved, and details are not repeated here.

In order to avoid a false alarm problem of cell detection corresponding to a cell identifier, in the embodiment of the present invention, the first group of time-frequency sub-resources includes all or part of each CSI-RS resource in CSI-RS resources of at least two second antenna ports, and the second group of time-frequency sub-resources includes all or part of each CSI-RS resource in CSI-RS resources of at least two second antenna ports.

For example, the candidate time-frequency resources C and D shown in fig. 3A include 4 time-frequency sub-resources (divided by frequency domain), each time-frequency sub-resource corresponds to a group of binary orthogonal code sequences, and the sequence information corresponding to the candidate time-frequency resource C and the CSI-RS of the 4 antenna ports coexist with ambiguity, specifically, as shown in fig. 3B, the sequence information corresponding to the candidate time-frequency resource D and the CSI-RS of the 4 antenna ports coexist without ambiguity, specifically, as shown in fig. 3C. For the division of the first group of time-frequency sub-resources and the second group of time-frequency sub-resources, fig. 3B is divided according to 4-antenna port CSI-RS resources, that is, each group of time-frequency sub-resources includes only one complete 4-antenna port CSI-RS resource, and fig. 3C is divided according to each group of time-frequency sub-resources including a part of each of the two 4-antenna port CSI-RS resources. For the case shown in fig. 3B, if only one cell transmits a PCI0 identifier, that is, sequence information corresponding to AP ID 0, and the cell also transmits a CSI-RS resource (APID 2) with 4 antenna ports, the UE may also detect the cell with the obtained AP ID 2 when detecting the cell with the obtained AP ID 0, and thus, a false alarm problem of cell detection corresponding to the cell identifier may occur in the case of fig. 3A; for the situation shown in fig. 3C, although the CSI-RS resource with 4 antenna ports is configured, since the occurrence of the orthogonal code sequence combination is avoided when the first group of time-frequency sub-resources and the second group of time-frequency sub-resources are divided, the false alarm problem of cell detection corresponding to the cell identifier is avoided. In the above embodiment, the second antenna port is 4 ports.

Furthermore, in order to maintain a certain cell identifier bearing efficiency and improve the reuse rate of time frequency resources, in the embodiment of the invention, at least two candidate time frequency resources are partially overlapped with each other; and/or at least two time-frequency sub-resources partially overlap each other.

For example, a CSI-RS resource with one candidate time-frequency resource being an 8-antenna port is divided into 4 time-frequency sub-resources, and specific positions of frequency domains of the 4 time-frequency sub-resources are respectively: {0, 1}, {1, 2}, {2, 3} and {3, 0}, where the frequency domain positions mentioned above indicate the position indexes of resource elements in the frequency domain direction of the CSI-RS resource of the 8 antenna ports, and it can be seen from the above that the 1 st time-frequency sub-resource partially overlaps with the 2 nd time-frequency sub-resource, the 2 nd time-frequency sub-resource partially overlaps with the 3 rd time-frequency sub-resource, and the 3 rd time-frequency sub-resource partially overlaps with the 4 th time-frequency sub-resource.

In practical applications, the candidate time-frequency resources may include more than 4 time-frequency sub-resources, and detailed description thereof is omitted.

As can be seen from the above, the CSI-RS resource may coexist with the sequence information corresponding to the determined cell identifier, and the current actions of the CSI-RS resource, that is, CSI measurement and the like, are maintained. Therefore, in the embodiment of the present invention, the UE may perform one or any combination of channel state information measurement, synchronization and RRM measurement using the CSI-RS resource sent on the time-frequency sub-resource on the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence group; that is, the UE may perform one or any combination of channel state information measurement, synchronization and RRM measurement using CSI-RS resources transmitted on all time-frequency sub-resources on the actual time-frequency resources occupied by the actual scrambling sequence and the actual orthogonal code sequence group, or perform one or any combination of channel state information measurement, synchronization and RRM measurement using CSI-RS resources transmitted on part of the time-frequency sub-resources on the actual time-frequency resources occupied by the actual scrambling sequence and the actual orthogonal code sequence group.

In the embodiment of the present invention, after determining the cell identifier according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence, the UE may further perform the following operations:

and performing RRM measurement according to the determined cell identity.

Because the time interval of the base station sending the sequence information twice on the actual time-frequency resource is longer, and the sending density of the sequence information sent each time is larger, the UE can obtain RRM measuring results of a plurality of cells through one-time measurement or less measurement times, thereby reducing the time consumed by RRM measurement, saving the power of the UE, and simultaneously reducing the interference between the cells by orthogonalizing cell identifications corresponding to the cells, thereby improving the accuracy of RRM measurement.

In the embodiment of the present invention, if a cell identifier is determined at least according to a detected actual scrambling code sequence and an actual orthogonal code sequence, and then the actual scrambling code sequence and a part of sequence information of the actual orthogonal code sequence carry the cell identifier, and further a part of sequence information does not carry the cell identifier, a UE determines configuration information of a cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the detected actual orthogonal code sequence, where the configuration information includes one or any combination of a switch, an active/dormant state, a transmission power level, a carrier type, and a duplex type of the corresponding cell.

For example, the configuration information is a switch of the corresponding cell, and may be specifically indicated by an orthogonal code sequence in an orthogonal code sequence group in the sequence information, for example, the orthogonal code sequence {1, 1} is an on indication of the corresponding cell, and the orthogonal code sequence {1, -1} is an off indication of the corresponding cell; the indication may also be performed through different scrambling code sequences, for example, scrambling code sequence 0 is an indication of turning on the corresponding cell, scrambling code sequence 1 is an indication of turning off the corresponding cell, and may also be indicated through the candidate time-frequency resource location.

When the UE determines the configuration information of the cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the detected actual orthogonal code sequence, if the information is the switch of the corresponding cell, the UE can find that the base station is about to be closed in time, and reselect other opened cells or base stations as soon as possible, so that the mobility performance is maintained, meanwhile, the power used for closing the cell to send the sequence information can be reduced when the RSSI (Received signal strength indicator) is calculated, and the accuracy of the RSRQ (Reference signal Received quality) measurement is ensured. In practical applications, the configuration information may also indicate other information, such as an active/dormant state, a transmission power level, a carrier type, or a duplex type, and the indication manner is similar to that described above, and therefore, detailed descriptions thereof are omitted.

When the base station is in an active state, the base station can normally transmit data, such as sending a synchronization signal, a broadcast signal, a unicast signal for scheduling, a reference signal and the like; when the base station is in a dormant state, the base station cannot normally transmit data, and only sends a reference signal with a longer period for the UE to discover and measure the cell. The carrier types are divided into backward compatible carrier types and new carrier types, wherein the new carrier types can be divided into new carrier types which can be independently accessed and new carrier types which can not be independently accessed, and can not be accessed by low-version UE.

In practical application, if the UE directly obtains at least one candidate time-frequency resource and directly determines sequence information corresponding to the at least one candidate time-frequency resource, because the UE does not know the rough location, especially the location of the frequency domain, of each candidate time-frequency resource, there are problems of long time consumption and low efficiency, wherein the rough location of the candidate time-frequency resource can be determined through high-level signaling, and therefore, further, in order to reduce the time consumed for obtaining the at least one candidate time-frequency resource and determining the sequence information corresponding to the at least one candidate time-frequency resource and improve the efficiency, the UE can detect a synchronization channel to obtain a synchronization sequence, and obtain the time-frequency location of the at least one candidate time-frequency resource according to the synchronization sequence and/or the location of the synchronization sequence, specifically: after detecting the synchronization channel and obtaining the synchronization sequence, the UE may obtain the center frequency band position and the rough timing information of the current detected carrier, and then obtain the time-frequency position of at least one candidate time-frequency resource according to the timing information.

The UE can also determine a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or determining candidate scrambling codes and/or channel estimation information of candidate orthogonal codes according to the obtained synchronization sequence, wherein if the candidate time-frequency resources comprise N time-frequency sub-resources, the UE determines the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence, and determines the cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

Referring to fig. 4, in the embodiment of the present invention, a detailed flow of information transmission is as follows:

example two:

step 400: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group;

step 410: determining an actual time frequency resource from at least one candidate time frequency resource, and respectively determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group which are included in sequence information corresponding to the actual time frequency resource;

step 420: and on the actual time-frequency resource, sending an actual scrambling code sequence and an actual orthogonal code sequence to the user equipment UE, and enabling the UE to determine the cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence.

In the embodiment of the present invention, in step 400, the candidate time-frequency resources obtained by the base station have multiple types, and preferably, the candidate time-frequency resources are at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency resource is an OFDM symbol where at least two SSSs are located.

When the candidate time-frequency resource is at least one CSI-RS of the first antenna port, since the CSI-RS resource of the 8 antenna ports of the first antenna port has the largest resource unit, preferably, the candidate time-frequency resource is at least one CSI-RS resource of the 8 antenna ports of the first antenna port. In practical application, different cells can select different CSI-RS resources with 8 antenna ports, so that interference coordination can be realized for reference signals of different cells, the detection performance of the reference signals is enhanced, the resource positions of the existing CSI-RS can be multiplexed, and the system design and the realization complexity are simplified.

In the embodiment of the present invention, in step 400, at least one candidate time-frequency resource obtained by the base station may be different time-frequency resources within one subframe, for example, different CSI-RS resources of 8 antenna ports within one subframe; time-frequency resources in different subframes, for example, CSI-RS resources of 8 antenna ports of subframe 1 and CSI-RS resources of 8 antenna ports of subframe 2, may also be used.

In the embodiment of the present invention, in step 400, the base station may acquire at least one candidate time-frequency resource in a plurality of manners, for example, at least one candidate time-frequency resource may be pre-stored in the base station.

Similarly, in step 400, there are various ways for the base station to determine the sequence information corresponding to at least one candidate time-frequency resource, for example, the base station stores the sequence information corresponding to at least one candidate time-frequency resource in advance.

For example, if the Gold sequence is shown in the above-mentioned formula one, the candidate scrambling code sequence may be formula one, or may be an initialization sequence of the Gold sequence, that is, the above-mentioned formula two, or may be an initialization parameter in the initialization sequence, that is, the above-mentioned formula two

For example, the Walsh sequence set is a binary sequence set, and includes two orthogonal code sequences of {1, 1} and {1, -1}, respectively, and the candidate orthogonal code sequence set is ({1, 1}, {1, -1 }); the Walsh sequence set is a quaternary sequence set, the four orthogonal code sequences comprise {1, 1, 1, 1}, {1, 1, -1, -1}, {1, -1, 1, -1} and {1, -1, -1, 1}, and the candidate orthogonal code sequence set is ({1, 1, 1, 1}, {1, 1, -1, -1}, {1, -1, 1, -1} and {1, -1, -1, 1 }).

In the embodiment of the present invention, the Walsh sequence group may be a binary code group, a quaternary code group, or an eight-ary code group, where any two Walsh sequence groups may be sequence groups with the same dimension, or sequence groups with different dimensions, for example, the Walsh sequence group corresponding to one candidate time-frequency resource is a binary code group, and the Walsh sequence group corresponding to another candidate time-frequency resource is a quaternary code group.

Each candidate time-frequency resource corresponds to sequence information, and the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group, so that each candidate time-frequency resource bears at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; and in the time domain direction of the actual time frequency resource, spreading the generated actual scrambling code sequence by using an actual orthogonal code sequence. The method specifically comprises the following steps: for a certain OFDM symbol, a scrambling code sequence is generated on a plurality of resource blocks containing the OFDM symbol, and then orthogonal code spreading in the time domain direction is carried out on the scrambling code sequence on the OFDM subcarrier of each resource unit.

In step 420, there are multiple ways for the UE to determine the cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence, and preferably, the UE is made to determine the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

For example, the two obtained actual time-frequency resources are respectively: the actual interference code sequences carried on the first actual time frequency resource are 0 and 1, the actual interference code sequences carried on the second actual time frequency resource are 2 and 3, the actual orthogonal code sequence group carried on each actual time frequency resource is a group of binary Walsh sequence groups ({1, -1}), {1, 1}), and the base station makes the cell identifier determined by the UE be at most 8, specifically: (0+ {1, 1}), (0+ {1, -1}), (1+ {1, -1}), (2+ {1, -1}), (3+ {1, -1 }).

For example, the two obtained actual time-frequency resources are respectively: the actual interference code sequences carried on the first actual time frequency resource are 0 and 1, the actual interference code sequences carried on the second actual time frequency resource are 0 and 1, the actual orthogonal code sequence group carried on each actual time frequency resource is a group of binary Walsh sequence groups ({1, -1}), {1, 1}), and the base station makes the cell identifier determined by the UE be at most 8, specifically: (first real time-frequency resource +0+ {1, 1}), (first real time-frequency resource +0+ {1, -1}), (first real time-frequency resource +1+ {1, -1}), (second real time-frequency resource +0+ {1, -1}), (second real time-frequency resource +1+ {1, -1 }).

In the embodiment of the invention, if the candidate time frequency resources comprise N time frequency sub-resources, the base station respectively generates an actual scrambling code sequence corresponding to each time frequency sub-resource in the frequency domain direction of each time frequency sub-resource in the actual time frequency resources; and respectively spreading the generated actual scrambling code sequence corresponding to each time-frequency sub-resource by using the actual orthogonal code sequence corresponding to each time-frequency sub-resource in the time domain direction of each time-frequency sub-resource in the actual time-frequency resources.

Similarly, if the candidate time-frequency resources include N time-frequency sub-resources, the base station sends an actual scrambling code sequence and an actual orthogonal code sequence to the UE on the actual time-frequency resources, sends the actual scrambling code sequence corresponding to the actual time-frequency resources to the UE on each time-frequency sub-resource in the actual time-frequency resources, and sends the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to the time-frequency sub-resources on each time-frequency sub-resource in the actual time-frequency resources according to the correspondence between the time-frequency sub-resources and the actual orthogonal code sequence group.

Further, if the candidate time-frequency resources include N time-frequency sub-resources, the base station instructs the UE to determine the cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence, and instructs the UE to determine the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

In order to improve the accuracy of determining the actual scrambling code sequence and the actual orthogonal code sequence in the actual orthogonal code sequence group, reduce the complexity, reduce the number of time-frequency sub-resources included in the candidate time-frequency resources, and simultaneously limit the number of the orthogonal code sequence group.

In the embodiment of the present invention, if the UE determines the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, the actual scrambling code sequence and the actual orthogonal code sequence carry part of the sequence information of the cell identifier, and a part of the sequence information does not carry the cell identifier, the UE further determines the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, where the configuration information includes one or any combination of a switch, an active/dormant state, a transmission power level, a carrier type, and a duplex type of the corresponding cell.

For example, the configuration information is the active/dormant state of the corresponding cell, and may be specifically indicated by an orthogonal code sequence in an orthogonal code sequence group in the sequence information, for example, the orthogonal code sequence {1, 1} is an active state indication of the corresponding cell, and the orthogonal code sequence {1, -1} is a dormant state indication of the corresponding cell; it can also be indicated by different scrambling code sequences, for example, scrambling code sequence 0 is an indication of an active state of the corresponding cell, scrambling code sequence 1 is an indication of a dormant state of the corresponding cell, and it can also be indicated by a candidate time-frequency resource location.

When the base station enables the UE to determine the configuration information of the cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, if the information is the switch of the corresponding cell, the UE can find that the base station is about to be closed in time, reselect other opened cells or base stations as soon as possible, keep the mobility performance, and simultaneously reduce the power used for closing the cell to send the sequence information when the RSSI is calculated, thereby ensuring the accuracy of RSRQ measurement. In practical applications, the configuration information may also indicate other information, such as an active/dormant state, a transmission power level, a carrier type, or a duplex type, and the indication manner is similar to that described above, and therefore, detailed descriptions thereof are omitted.

The base station can also enable the UE to determine a cell identifier according to the received synchronization information, the received actual scrambling code sequence and the actual orthogonal code sequence; or the base station enables the UE to determine the candidate scrambling codes and/or the channel estimation information of the candidate orthogonal codes according to the received synchronization sequence, wherein if the candidate time-frequency resources comprise N time-frequency sub-resources, the base station enables the UE to determine the cell identifier according to the received synchronization information, the actual scrambling code sequence and the actual orthogonal code sequence, and the base station enables the UE to determine the cell identifier according to the received synchronization information, the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

As shown in fig. 5, the UE provided in the embodiment of the present invention includes: a first determining unit 500, configured to obtain at least one candidate time-frequency resource, and respectively determine sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; a detecting unit 510, configured to detect, on at least one candidate time-frequency resource, a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource, and obtain an actual orthogonal code sequence in an actual scrambling code sequence and an actual orthogonal code sequence group; a second determining unit 520, configured to determine a cell identifier according to at least the detected actual scrambling code sequence and the actual orthogonal code sequence.

Preferably, the candidate time-frequency resource obtained by the first determining unit 500 is at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency resource obtained by the first determining unit 500 is an orthogonal frequency division multiplexing OFDM symbol where the at least two secondary synchronization signals SSS are located.

Preferably, the at least one candidate time-frequency resource obtained by the first determining unit 500 is a different time-frequency resource in one subframe; alternatively, at least one candidate time-frequency resource obtained by the first determining unit 500 is a time-frequency resource in a different subframe.

Preferably, the obtaining of at least one candidate time-frequency resource by the first determining unit 500 specifically includes: pre-storing at least one candidate time frequency resource; or, at least one candidate time frequency resource is obtained according to the received signaling sent by the base station.

Similarly, the determining of the sequence information corresponding to at least one candidate time-frequency resource, which is obtained by the first determining unit 500, specifically includes: pre-storing sequence information corresponding to at least one candidate time frequency resource; or, according to the received signaling sent by the base station, obtaining the sequence information corresponding to at least one candidate time-frequency resource.

Preferably, the candidate scrambling code sequence determined by the first determining unit 500 is a pseudo-random sequence, or an initialization sequence of the pseudo-random sequence; the candidate orthogonal code sequence set determined by the first determination unit 500 is a Walsh sequence set.

In the embodiment of the present invention, for a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the sequence information determined by the first determining unit 500, the candidate scrambling code sequence is a sequence generated in the frequency domain direction of a candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequences in the candidate orthogonal code sequence group are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of the candidate time frequency resources.

Preferably, the detecting unit 510 is specifically configured to: and judging the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and when the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource is matched with the candidate orthogonal code sequence in the candidate orthogonal code sequence group, taking the matched candidate scrambling code sequence and candidate orthogonal code sequence as an actual scrambling code sequence and an actual orthogonal code sequence.

When the determining unit determines the cell identifier, the determining unit determines the cell identifier according to the detected actual scrambling code sequence and the detected actual orthogonal code sequence; or, according to the detected actual scrambling code sequence, actual orthogonal code sequence, and actual time-frequency resource occupied by actual scrambling code sequence and actual orthogonal code sequence, determining cell identification.

Further, the candidate time-frequency resources determined by the first determining unit 500 include N time-frequency sub-resources, each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 35.

Preferably, the candidate scrambling code sequence determined by the first determining unit 500 is a sequence generated in the frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resources corresponding to the sequence information; the candidate orthogonal code sequence in the candidate orthogonal code sequence group determined by the first determining unit 500 is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information.

Preferably, the detecting unit 510 is specifically configured to: and detecting a corresponding candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

Preferably, the determining unit is specifically configured to: determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource; or, determining the cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

Further, the candidate time-frequency resources obtained by the first determining unit 500 include a first time-frequency sub resource group and a second time-frequency sub resource group, where the first time-frequency sub resource group and the second time-frequency sub resource group respectively include at least one time-frequency sub resource, and candidate orthogonal code sequences corresponding to the time-frequency sub resources included in the first time-frequency sub resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub resources included in the second time-frequency sub resource group are identical or pseudo-orthogonal to each other.

Preferably, the first group of time-frequency sub-resources includes all or part of each of the CSI-RS resources of the at least two second antenna ports, and the second group of time-frequency sub-resources includes all or part of each of the CSI-RS resources of the at least two second antenna ports.

Preferably, the at least two candidate time frequency resources obtained by the first determining unit 500 are partially overlapped with each other; and/or at least two time-frequency sub-resources partially overlap each other.

Further, the ue further includes a communication unit 530, where the communication unit 530 is specifically configured to perform one or any combination of channel state information measurement, synchronization, and RRM measurement for radio resource management by using CSI-RS sent on time-frequency sub-resources on actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence group.

Further, the determining unit is specifically configured to: and determining configuration information of a cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

Further, the obtaining unit is further configured to: detecting a synchronous channel to obtain a synchronous sequence; acquiring the time frequency position of at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position of the synchronization sequence; or, according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence, determining the cell identifier; or determining the candidate scrambling codes and/or the channel estimation information of the candidate orthogonal codes according to the obtained synchronous sequence.

As shown in fig. 6, a base station provided in an embodiment of the present invention includes: a first obtaining unit 600, configured to obtain at least one candidate time-frequency resource, and respectively determine sequence information corresponding to the at least one candidate time-frequency resource, where the sequence information includes at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; a second obtaining unit 610, configured to determine an actual time-frequency resource from the at least one candidate time-frequency resource obtained by the first obtaining unit 600, and determine an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in sequence information corresponding to the actual time-frequency resource, respectively; a sending unit 620, configured to send, to the UE, the actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquiring unit 610 on the actual time-frequency resource determined by the second acquiring unit 610, so that the UE determines the cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence.

Preferably, the candidate time-frequency resource acquired by the first acquiring unit 600 is at least one CSI-RS resource of the first antenna port; or, the candidate time-frequency resources acquired by the first acquiring unit 600 are orthogonal frequency division multiplexing OFDM symbols where the at least two secondary synchronization signals SSS are located.

Preferably, the at least one candidate time-frequency resource acquired by the first acquiring unit 600 is a different time-frequency resource in one subframe; alternatively, the at least one candidate time-frequency resource acquired by the first acquiring unit 600 is a time-frequency resource in a different subframe.

Preferably, the candidate scrambling code sequence determined by the first obtaining unit 600 is a pseudo-random sequence, or an initialization sequence of the pseudo-random sequence; the candidate orthogonal code sequence set determined by the first acquisition unit 600 is a Walsh sequence set.

Wherein, for the actual scrambling code sequence and the actual orthogonal code sequence determined by the second obtaining unit 610, the actual scrambling code sequence is generated in the frequency domain direction of the actual time-frequency resource; and in the time domain direction of the actual time frequency resource, spreading the generated actual scrambling code sequence by using an actual orthogonal code sequence.

In the embodiment of the present invention, when the sending unit 620 determines the cell identifier, the UE determines the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

Further, the candidate time-frequency resources obtained by the first obtaining unit 600 include N time-frequency sub-resources, each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 1.

Preferably, the actual scrambling code sequence corresponding to each time-frequency sub-resource is generated in the frequency domain direction of each time-frequency sub-resource in the actual time-frequency resources; and respectively spreading the generated actual scrambling code sequence corresponding to each time-frequency sub-resource by using the actual orthogonal code sequence corresponding to each time-frequency sub-resource in the time domain direction of each time-frequency sub-resource in the actual time-frequency resources.

Preferably, the sending unit 620 is specifically configured to: and transmitting the actual scrambling code sequence corresponding to the actual time frequency resource to the UE on each time frequency sub-resource in the actual time frequency resource, and transmitting the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to the time frequency sub-resource on each time frequency sub-resource in the actual time frequency resource according to the corresponding relation between the time frequency sub-resource and the actual orthogonal code sequence group.

Preferably, the sending unit 620 is specifically configured to: enabling the UE to determine a cell identifier according to an actual scrambling code sequence corresponding to each time-frequency sub-resource and an actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

Further, the candidate time-frequency resources obtained by the first obtaining unit 600 include a first time-frequency sub resource group and a second time-frequency sub resource group, where the first time-frequency sub resource group and the second time-frequency sub resource group respectively include at least one time-frequency sub resource, and candidate orthogonal code sequences corresponding to the time-frequency sub resources included in the first time-frequency sub resource group are orthogonal to each other, and candidate orthogonal code sequences corresponding to the time-frequency sub resources included in the second time-frequency sub resource group are identical or pseudo-orthogonal to each other.

Preferably, the at least two candidate time frequency resources acquired by the first acquiring unit 600 are partially overlapped with each other; and/or at least two time-frequency sub-resources acquired by the first acquisition unit 600 partially overlap with each other.

Further, the sending unit 620 is further configured to: and enabling the UE to determine configuration information of a cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/dormancy state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

Further, the first obtaining unit 600 is further configured to: transmitting a synchronization sequence on a synchronization channel; enabling the UE to acquire the time frequency position of at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position where the synchronization sequence is located; or, enabling the UE to determine a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or enabling the UE to determine the channel estimation information of the candidate scrambling codes and/or the candidate orthogonal codes according to the obtained synchronization sequences.

In summary, the present invention provides an information detecting and sending method, wherein the information detecting method includes: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; detecting candidate scrambling code sequences and candidate orthogonal code sequence groups included in the determined sequence information corresponding to at least one candidate time frequency resource on at least one candidate time frequency resource to obtain actual orthogonal code sequences in the actual scrambling code sequences and the actual orthogonal code sequence groups; the cell identification is determined at least according to the detected actual scrambling code sequence and the actual orthogonal code sequence, so that, because each candidate time-frequency resource can be at any position of the carrier center, even can not be limited in 6 resource blocks of the carrier center, the possibility of overlapping any two candidate time-frequency resources is low, the interference between signals transmitted on any two candidate time-frequency resources is low, therefore, the interference when the UE detects the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required by the UE to determine the cell identification is shortened, the efficiency of determining the cell identification is improved, and the accuracy of the determined cell identification is low, meanwhile, the cell identification is determined by the actually detected scrambling code sequence and the actually detected orthogonal code sequence, and the scrambling code sequence and the actually detected orthogonal code sequence can both reduce the interference, thereby further solving the problem in a heterogeneous network, when the UE determines the cell identifier, the problems of long time consumption, low efficiency and poor accuracy exist; the information sending method comprises the following steps: acquiring at least one candidate time frequency resource, and respectively determining sequence information corresponding to the at least one candidate time frequency resource, wherein the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group; determining an actual time frequency resource from at least one candidate time frequency resource, and respectively determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group which are included in sequence information corresponding to the actual time frequency resource; in the actual time frequency resource, the actual scrambling code sequence and the actual orthogonal code sequence are sent to the user equipment UE, and the UE is enabled to determine the cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence, so that the possibility of overlapping any two candidate time frequency resources is low, and the interference between signals sent on any two candidate time frequency resources is low, therefore, the interference when the base station sends the actual scrambling code sequence and the actual orthogonal code sequence is reduced, the time required by the UE to determine the cell identifier is shortened, the efficiency of determining the cell identifier is improved, and the accuracy of the determined cell identifier is improved, and meanwhile, the cell identifier is determined through the sent actual scrambling code sequence and the actual orthogonal code sequence, the scrambling code sequence and the orthogonal code sequence can reduce interference, so that the problems of long time consumption, low efficiency and poor accuracy when the UE determines the cell identifier in the heterogeneous network are further solved.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of information detection, comprising:

obtaining at least one candidate time-frequency resource, and respectively determining sequence information corresponding to the at least one candidate time-frequency resource, wherein the sequence information includes at least one candidate scrambling sequence and at least one candidate orthogonal code sequence group, the candidate time-frequency resources include a first time-frequency sub-resource group and a second time-frequency sub-resource group, the first time-frequency sub-resource group and the second time-frequency sub-resource group respectively include at least one time-frequency sub-resource, candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the first time-frequency sub-resource group are orthogonal, and candidate orthogonal code sequences corresponding to the time-frequency sub-resources included in the second time-frequency sub-resource group are identical or pseudo-orthogonal;

detecting candidate scrambling code sequences and candidate orthogonal code sequence groups included in the determined sequence information corresponding to the at least one candidate time frequency resource on the at least one candidate time frequency resource to obtain actual orthogonal code sequences in the actual scrambling code sequences and the actual orthogonal code sequence groups;

determining a cell identity based at least on the detected actual scrambling code sequence and the actual orthogonal code sequence.

2. The method of claim 1, wherein the candidate time-frequency resources are at least one channel state information reference signal, CSI-RS, resource for a first antenna port; or, the candidate time-frequency resource is an orthogonal frequency division multiplexing OFDM symbol where the at least two secondary synchronization signals SSS are located.

3. The method of claim 2, wherein the at least one candidate time-frequency resource is a different time-frequency resource within a subframe; or, the at least one candidate time-frequency resource is a time-frequency resource in a different subframe.

4. The method of claim 1, wherein obtaining at least one candidate time-frequency resource specifically comprises:

pre-storing the at least one candidate time-frequency resource; or,

and acquiring the at least one candidate time frequency resource according to the received signaling sent by the base station.

5. The method of claim 1, wherein determining the sequence information corresponding to the at least one candidate time-frequency resource specifically comprises:

pre-storing sequence information corresponding to the at least one candidate time frequency resource; or,

and acquiring sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station.

6. The method of claim 1, wherein the candidate scrambling sequence is a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence; the set of candidate orthogonal code sequences is a set of Walsh sequences.

7. The method of claim 1, wherein the sequence information includes candidate scrambling code sequences and candidate orthogonal code sequence groups, and the candidate scrambling code sequences are sequences generated in a frequency domain direction of candidate time-frequency resources corresponding to the sequence information; and the candidate orthogonal code sequences in the candidate orthogonal code sequence group are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of the candidate time frequency resources.

8. The method of claim 1, wherein detecting, on the at least one candidate time-frequency resource, a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource, and obtaining an actual orthogonal code sequence in an actual scrambling code sequence and an actual orthogonal code sequence group, specifically comprises:

and judging the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and when the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource is matched with the candidate orthogonal code sequence in the candidate orthogonal code sequence group, taking the matched candidate scrambling code sequence and candidate orthogonal code sequence as an actual scrambling code sequence and an actual orthogonal code sequence.

9. The method of claim 1, wherein determining a cell identity based on at least the detected actual scrambling sequence and the actual orthogonal code sequence comprises:

determining a cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or,

and determining the cell identification according to the detected actual scrambling code sequence, the detected actual orthogonal code sequence and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

10. The method of claim 1, further comprising:

the candidate time frequency resources comprise N time frequency sub-resources, each time frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in the sequence information corresponding to the candidate time frequency resource, wherein N is an integer greater than 1.

11. The method of claim 10, wherein the candidate scrambling code sequence is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequence in the candidate orthogonal code sequence group is a sequence generated by spreading the generated candidate scrambling code sequence in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resource corresponding to the sequence information.

12. The method of claim 11, wherein detecting the candidate scrambling code sequence and the candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource on the at least one candidate time-frequency resource to obtain an actual orthogonal code sequence in the actual scrambling code sequence and the actual orthogonal code sequence group comprises:

and detecting a candidate scrambling code sequence included in the sequence information corresponding to the time-frequency sub-resource on each time-frequency sub-resource of the at least one candidate time-frequency resource to obtain an actual scrambling code sequence, and detecting a corresponding candidate orthogonal code sequence group on each time-frequency sub-resource of the at least one candidate time-frequency resource according to the corresponding relation between the time-frequency sub-resource and the candidate orthogonal code sequence group to obtain an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

13. The method of claim 12, wherein determining a cell identity based on at least the detected actual scrambling sequence and the actual orthogonal code sequence comprises:

determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource; or,

and determining the cell identification according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

14. The method of any one of claims 1-13, wherein the first set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports, and wherein the second set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports.

15. The method of claim 10, wherein at least two of the candidate time-frequency resources partially overlap each other; and/or at least two time frequency sub-resources are partially overlapped with each other.

16. The method of any one of claims 2-13, further comprising:

and performing one or any combination of channel state information measurement, synchronization and Radio Resource Management (RRM) measurement by using the CSI-RS transmitted on the time-frequency sub-resources on the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence group.

17. The method of claim 16, further comprising:

and determining configuration information of a cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

18. The method of claim 17, further comprising:

detecting a synchronous channel to obtain a synchronous sequence;

acquiring the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position of the synchronization sequence; or, according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence, determining a cell identifier; or determining the channel estimation information of the candidate scrambling codes and/or the candidate orthogonal codes according to the obtained synchronization sequence.

19. A method for transmitting information, comprising:

determining an actual time frequency resource from the at least one candidate time frequency resource, and determining an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in sequence information corresponding to the actual time frequency resource;

and sending the actual scrambling code sequence and the actual orthogonal code sequence to User Equipment (UE) on the actual time-frequency resource, and enabling the UE to determine a cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence.

20. The method of claim 19, wherein the candidate time-frequency resources are at least one channel state information reference signal, CSI-RS, resource for a first antenna port; or, the candidate time-frequency resource is an orthogonal frequency division multiplexing OFDM symbol where the at least two secondary synchronization signals SSS are located.

21. The method of claim 19, wherein the at least one candidate time-frequency resource is a different time-frequency resource within a subframe; or, the at least one candidate time-frequency resource is a time-frequency resource in a different subframe.

22. The method of claim 19, wherein the candidate scrambling sequence is a pseudo-random sequence, or an initialization sequence of a pseudo-random sequence; the set of candidate orthogonal code sequences is a set of Walsh sequences.

23. The method of claim 19, wherein the actual scrambling sequence is generated in a frequency domain direction of the actual time-frequency resource for the actual scrambling sequence and the actual orthogonal code sequence; and in the time domain direction of the actual time frequency resource, the generated actual scrambling code sequence is subjected to spread spectrum by using the actual orthogonal code sequence.

24. The method of claim 19, wherein causing the UE to determine a cell identity based at least on the actual scrambling sequence and the actual orthogonal code sequence comprises:

enabling the UE to determine a cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or,

and enabling the UE to determine the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

25. The method of claim 19, further comprising:

26. The method of claim 19, wherein in a frequency domain direction of each of the real time-frequency resources, a real scrambling code sequence corresponding to said each time-frequency sub-resource is generated separately; and respectively spreading the generated actual scrambling code sequence corresponding to each time-frequency sub-resource by using the actual orthogonal code sequence corresponding to each time-frequency sub-resource in the time domain direction of each time-frequency sub-resource in the actual time-frequency resources.

27. The method of claim 26, wherein transmitting the actual scrambling sequence and the actual orthogonal code sequence to the UE on the actual time-frequency resource comprises:

and sending an actual scrambling code sequence corresponding to the actual time-frequency resource to the UE on each time-frequency sub-resource in the actual time-frequency resources, and sending an actual orthogonal code sequence in an actual orthogonal code sequence group corresponding to the time-frequency sub-resources on each time-frequency sub-resource in the actual time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the actual orthogonal code sequence group.

28. The method of claim 27, wherein causing the UE to determine a cell identity based at least on the actual scrambling sequence and the actual orthogonal code sequence comprises:

enabling the UE to determine a cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or,

and enabling the UE to determine the cell identification according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

29. The method of any one of claims 19-28, wherein the first set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports, and wherein the second set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports.

30. The method of claim 25, wherein at least two of the candidate time-frequency resources partially overlap each other; and/or at least two time frequency sub-resources are partially overlapped with each other.

31. The method of any one of claims 19-28, further comprising:

and enabling the UE to determine configuration information of a cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

32. The method of claim 31, further comprising:

transmitting a synchronization sequence on a synchronization channel;

enabling the UE to acquire the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position where the synchronization sequence is located; or, the UE determines a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or enabling the UE to determine the channel estimation information of the candidate scrambling codes and/or the candidate orthogonal codes according to the obtained synchronization sequence.

33. A User Equipment (UE), comprising:

the device comprises a first determining unit, a second determining unit and a processing unit, wherein the first determining unit is used for acquiring at least one candidate time-frequency resource and respectively determining sequence information corresponding to the at least one candidate time-frequency resource, the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group, the candidate time-frequency resources comprise a first time-frequency sub resource group and a second time-frequency sub resource group, the first time-frequency sub resource group and the second time-frequency sub resource group respectively comprise at least one time-frequency sub resource, the candidate orthogonal code sequences corresponding to the time-frequency sub resources in the first time-frequency sub resource group are orthogonal, and the candidate orthogonal code sequences corresponding to the time-frequency sub resources in the second time-frequency sub resource group are the same or pseudo-orthogonal;

a detecting unit, configured to detect, on the at least one candidate time-frequency resource, a candidate scrambling code sequence and a candidate orthogonal code sequence group included in the determined sequence information corresponding to the at least one candidate time-frequency resource, and obtain an actual orthogonal code sequence in an actual scrambling code sequence and an actual orthogonal code sequence group;

a second determining unit, configured to determine a cell identifier at least according to the detected actual scrambling code sequence and the actual orthogonal code sequence.

34. The UE of claim 33, wherein the candidate time-frequency resources obtained by the first determining unit are at least one CSI-RS resource of a first antenna port; or, the candidate time-frequency resources obtained by the first determining unit are orthogonal frequency division multiplexing OFDM symbols where the at least two secondary synchronization signals SSS are located.

35. The UE of claim 34, wherein the at least one candidate time-frequency resource obtained by the first determining unit is a different time-frequency resource within one subframe; or, the at least one candidate time-frequency resource acquired by the first determining unit is a time-frequency resource in different subframes.

36. The UE of claim 33, wherein the obtaining of the at least one candidate time-frequency resource by the first determining unit specifically includes: pre-storing the at least one candidate time-frequency resource; or, the at least one candidate time-frequency resource is obtained according to the received signaling sent by the base station.

37. The UE of claim 33, wherein the determining, by the first determining unit, the sequence information corresponding to the at least one candidate time-frequency resource specifically includes: pre-storing sequence information corresponding to the at least one candidate time frequency resource; or, obtaining the sequence information corresponding to the at least one candidate time-frequency resource according to the received signaling sent by the base station.

38. The UE of claim 33, wherein the candidate scrambling sequence determined by the first determining unit is a pseudo-random sequence or an initialization sequence of a pseudo-random sequence; the candidate orthogonal code sequence set determined by the first determining unit is a Walsh sequence set.

39. The UE according to claim 33, wherein the sequence information determined by the first determining unit includes a candidate scrambling code sequence and a candidate orthogonal code sequence group, and the candidate scrambling code sequence is a sequence generated in a frequency domain direction of a candidate time-frequency resource corresponding to the sequence information; and the candidate orthogonal code sequences in the candidate orthogonal code sequence group are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of the candidate time frequency resources.

40. The UE of claim 33, wherein the detection unit is specifically configured to: and judging the scrambling code sequence sent by the base station and the orthogonal code sequence in the orthogonal code sequence group received on the candidate time-frequency resource, and when the candidate scrambling code sequence included in the sequence information corresponding to the candidate time-frequency resource is matched with the candidate orthogonal code sequence in the candidate orthogonal code sequence group, taking the matched candidate scrambling code sequence and candidate orthogonal code sequence as an actual scrambling code sequence and an actual orthogonal code sequence.

41. The UE of claim 33, wherein the second determining unit is specifically configured to: determining a cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence; or, determining the cell identifier according to the detected actual scrambling code sequence, the detected actual orthogonal code sequence, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

42. The UE of claim 33, wherein the candidate time-frequency resources determined by the first determining unit include N time-frequency sub-resources, each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in sequence information corresponding to the candidate time-frequency resource, where N is an integer greater than 35.

43. The UE of claim 42, wherein the candidate scrambling code sequence determined by the first determining unit is a sequence generated in a frequency domain direction of each time-frequency sub-resource of the candidate time-frequency resources corresponding to the sequence information; the candidate orthogonal code sequences in the candidate orthogonal code sequence group determined by the first determining unit are sequences generated by spreading the generated candidate scrambling code sequences in the time domain direction of each time-frequency sub-resource of the candidate time-frequency resources corresponding to the sequence information.

44. The UE of claim 43, wherein the detection unit is specifically configured to: and detecting a corresponding candidate orthogonal code sequence group on each time-frequency sub-resource of the candidate time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the candidate orthogonal code sequence group, and obtaining an actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource.

45. The UE of claim 44, wherein the second determining unit is specifically configured to: determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource; or, determining a cell identifier according to the detected actual scrambling code sequence corresponding to each time-frequency sub-resource, the detected actual orthogonal code sequence in the actual orthogonal code sequence group corresponding to each time-frequency sub-resource, and the detected actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

46. The UE of any of claims 33-45, wherein the first set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports, and wherein the second set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports.

47. The UE of claim 46, wherein at least two of the candidate time-frequency resources obtained by the first determining unit partially overlap with each other; and/or at least two time frequency sub-resources are partially overlapped with each other.

48. The UE according to any of claims 34-45, further comprising a communication unit, which is specifically configured to perform one or any combination of channel state information measurement, synchronization, and RRM measurement for radio resource management, using CSI-RSs sent on time-frequency sub-resources on actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence group.

49. The UE of claim 48, wherein the second determining unit is specifically configured to: and determining configuration information of a cell corresponding to the cell identifier according to the detected actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

50. The UE of claim 49, wherein the first determining unit is further to: detecting a synchronous channel to obtain a synchronous sequence; acquiring the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position of the synchronization sequence; or, according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence, determining a cell identifier; or determining the channel estimation information of the candidate scrambling codes and/or the candidate orthogonal codes according to the obtained synchronization sequence.

51. A base station, comprising:

the system comprises a first acquisition unit, a second acquisition unit and a third acquisition unit, wherein the first acquisition unit is used for acquiring at least one candidate time-frequency resource and respectively determining sequence information corresponding to the at least one candidate time-frequency resource, the sequence information comprises at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group, the candidate time-frequency resources comprise a first time-frequency sub resource group and a second time-frequency sub resource group, the first time-frequency sub resource group and the second time-frequency sub resource group respectively comprise at least one time-frequency sub resource, the candidate orthogonal code sequences corresponding to the time-frequency sub resources in the first time-frequency sub resource group are orthogonal, and the candidate orthogonal code sequences corresponding to the time-frequency sub resources in the second time-frequency sub resource group are identical or pseudo-orthogonal;

a second obtaining unit, configured to determine an actual time-frequency resource from the at least one candidate time-frequency resource obtained by the first obtaining unit, and determine an actual scrambling code sequence and an actual orthogonal code sequence from at least one candidate scrambling code sequence and at least one candidate orthogonal code sequence group included in sequence information corresponding to the actual time-frequency resource, respectively;

a sending unit, configured to send the actual scrambling code sequence and the actual orthogonal code sequence determined by the second obtaining unit to a user equipment UE on the actual time-frequency resource determined by the second obtaining unit, so that the UE determines a cell identifier at least according to the actual scrambling code sequence and the actual orthogonal code sequence.

52. The base station of claim 51, wherein the candidate time-frequency resources obtained by the first obtaining unit are at least one CSI-RS resource of a first antenna port; or the candidate time-frequency resources acquired by the first acquisition unit are orthogonal frequency division multiplexing OFDM symbols where the at least two secondary synchronization signals SSS are located.

53. The base station of claim 51, wherein the at least one candidate time-frequency resource acquired by the first acquiring unit is a different time-frequency resource within a subframe; or, the at least one candidate time-frequency resource acquired by the first acquiring unit is a time-frequency resource in different subframes.

54. The base station of claim 51, wherein the candidate scrambling sequence determined by the first obtaining unit is a pseudo-random sequence or an initialization sequence of the pseudo-random sequence; the candidate orthogonal code sequence set determined by the first acquisition unit is a Walsh sequence set.

55. The base station of claim 51, wherein for an actual scrambling code sequence and the actual orthogonal code sequence determined by the second acquisition unit, the actual scrambling code sequence is generated in a frequency domain direction of the actual time-frequency resource; and in the time domain direction of the actual time frequency resource, the generated actual scrambling code sequence is subjected to spread spectrum by using the actual orthogonal code sequence.

56. The base station of claim 51, wherein the sending unit is specifically configured to: enabling the UE to determine a cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence; or, the UE determines the cell identifier according to the actual scrambling code sequence, the actual orthogonal code sequence, and the actual time-frequency resource occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

57. The base station of claim 51, wherein the candidate time-frequency resources obtained by the first obtaining unit include N time-frequency sub-resources, each time-frequency sub-resource corresponds to at least one candidate orthogonal code sequence group included in sequence information corresponding to the candidate time-frequency resource, and N is an integer greater than 1.

58. The base station according to claim 51, wherein in the frequency domain direction of each of the real time-frequency resources, a real scrambling code sequence corresponding to said each time-frequency sub-resource is generated separately; and respectively spreading the generated actual scrambling code sequence corresponding to each time-frequency sub-resource by using the actual orthogonal code sequence corresponding to each time-frequency sub-resource in the time domain direction of each time-frequency sub-resource in the actual time-frequency resources.

59. The base station of claim 58, wherein the sending unit is specifically configured to: and sending an actual scrambling code sequence corresponding to the actual time-frequency resource to the UE on each time-frequency sub-resource in the actual time-frequency resources, and sending an actual orthogonal code sequence in an actual orthogonal code sequence group corresponding to the time-frequency sub-resources on each time-frequency sub-resource in the actual time-frequency resources according to the corresponding relation between the time-frequency sub-resource and the actual orthogonal code sequence group.

60. The base station of claim 59, wherein the sending unit is specifically configured to: enabling the UE to determine a cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource and the actual orthogonal code sequence corresponding to each time-frequency sub-resource; or, the UE determines the cell identifier according to the actual scrambling code sequence corresponding to each time-frequency sub-resource, the actual orthogonal code sequence corresponding to each time-frequency sub-resource, and the actual time-frequency resources occupied by the actual scrambling code sequence and the actual orthogonal code sequence.

61. The base station of any of claims 51-60, wherein the first set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports, and wherein the second set of time-frequency sub-resources comprises all or a portion of each of the CSI-RS resources of the at least two second antenna ports.

62. The base station of claim 61, wherein at least two of the candidate time-frequency resources acquired by the first acquiring unit partially overlap each other; and/or at least two time frequency sub-resources acquired by the first acquisition unit are partially overlapped with each other.

63. The base station according to any of claims 51-60, wherein said transmitting unit is further configured to: and enabling the UE to determine configuration information of a cell corresponding to the cell identifier according to the actual scrambling code sequence and the actual orthogonal code sequence, wherein the configuration information comprises one or any combination of a switch, an activation/sleep state, a transmission power level, a carrier type and a duplex type of the corresponding cell.

64. The base station of claim 63, wherein the first obtaining unit is further configured to: transmitting a synchronization sequence on a synchronization channel; enabling the UE to acquire the time frequency position of the at least one candidate time frequency resource according to the synchronization sequence and/or the time frequency resource position where the synchronization sequence is located; or, the UE determines a cell identifier according to the obtained synchronization information, the detected actual scrambling code sequence and the actual orthogonal code sequence; or enabling the UE to determine the channel estimation information of the candidate scrambling codes and/or the candidate orthogonal codes according to the obtained synchronization sequence.