WO2016033978A1 - 准共位置的配置、确定方法及装置 - Google Patents
准共位置的配置、确定方法及装置 Download PDFInfo
- Publication number
- WO2016033978A1 WO2016033978A1 PCT/CN2015/077321 CN2015077321W WO2016033978A1 WO 2016033978 A1 WO2016033978 A1 WO 2016033978A1 CN 2015077321 W CN2015077321 W CN 2015077321W WO 2016033978 A1 WO2016033978 A1 WO 2016033978A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- csi
- qcl
- port
- information
- ports
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Definitions
- the present invention relates to the field of communications, and in particular to a configuration, method, and apparatus for quasi-common location.
- UDN Ultra Dense Network
- One way to realize cell virtualization is based on the idea that the control plane and the user plane are separated, that is, the information of the control plane is sent by the macro station or a specific carrier, and the data of the user plane is sent by the small cell; at the same time, in order to avoid the terminal from being mistakenly accessed.
- Small cells and establish connections with small cells, which affect mobility.
- a primary/secondary synchronization signal, a Common Reference Signal (CRS), a broadcast signal, and the like are not transmitted in a small cell.
- the mobility and interference problems in the UDN can be effectively alleviated, but another problem that needs to be considered is that the terminal estimates the downlink large-scale parameters (for example: time/frequency offset, delay spread, frequency extension). Wait). Since the terminal cannot identify different small cells, and the small cell does not transmit the common reference signal, the terminal cannot perform time-frequency offset estimation based on the CRS.
- the downlink large-scale parameters for example: time/frequency offset, delay spread, frequency extension. Wait). Since the terminal cannot identify different small cells, and the small cell does not transmit the common reference signal, the terminal cannot perform time-frequency offset estimation based on the CRS.
- CSI-RS Channel State Information Reference Signal
- FIG. 1 is a schematic diagram of a pattern of different port REs in a set of CSI-RSs according to the related art.
- Resource Element RE for short
- the RE corresponding to each CSI-RS is on two adjacent Orthogonal Frequency Division Multiplexing (OFDM) symbols. Therefore, this configuration limits the frequency offset.
- OFDM Orthogonal Frequency Division Multiplexing
- the CSI-RS ports 0 to 7 in FIG. 1 correspond to the ports 15 to 22 in the protocol, respectively.
- the figure shows a schematic diagram of the configuration of one set of CSI-RS.
- different cells can configure CSI-RS at different time-frequency resource locations, but the basic pattern is consistent.
- the CSI-RS mapping mode in different configurations is as follows:
- Table 1 shows (k', l') corresponding to the CSI-RS resource mapping under the extended CP. As shown in Table 1, wl" represents the spread weighting value on the port.
- Table 2 shows the (k', l') corresponding to the CSI-RS resource mapping under normal CP. As shown in table 2,
- a CRS for satisfying a Quasi-Co-Location (QCL) relationship is configured for each CSI-RS, and the terminal can be based on the CRS.
- QCL Quasi-Co-Location
- Estimate large-scale feature parameters eg, time/frequency offset, delay spread, frequency spread
- the large-scale feature parameters on the CRS are the same as the CSI-RS, where QCL is used to characterize the large-scale between antenna ports
- the characteristic relationship when the QCL relationship is satisfied between the two antenna ports A and B, means that the estimated large-scale characteristic parameters of the channel on the antenna port A are also suitable for the antenna port B. Therefore, when in R11, when the CRS of the QCL is configured for the CSI-RS, it means that the CSI-RS port has the same large-scale characteristics as the channel of the CRS port to the terminal.
- the small cell since the small cell does not send the cell-specific CRS, it cannot be implemented by configuring the CRS that satisfies the QCL relationship for the CSI-RS.
- the related art lacks a solution for cooperative UEs in UDN to perform large-scale feature parameter estimation.
- the embodiments of the present invention provide a configuration, a determining method, and a device for a quasi-common location, so as to at least solve the problem in the related art that a solution for collating a UE in a UDN for large-scale feature parameter estimation is lacking.
- a method of configuring a quasi-common location is provided.
- the method for configuring a quasi-common location includes: acquiring all channel state information reference signals CSI-RS currently configured; and configuring corresponding quasi-co-location channel states for each CSI-RS in all CSI-RSs
- the information reference signal QCL-CSI-RS wherein the QCL-CSI-RS is used to jointly estimate the channel large-scale feature parameter with the CSI-RS; and configure all the CSI-RSs and the QCL-CSI-RSs corresponding to the sets of CSI-RSs to terminal.
- the channel large-scale feature parameter comprises at least one of the following: a frequency offset parameter and a frequency extension parameter.
- the method further includes: transmitting, on a part or all of the ports used by the CSI-RS, a corresponding QCL-CSI-RS.
- transmitting the corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS includes one of the following: QCL-CSI-RS supports only one port by default, and the reference signal of QCL-CSI-RS port 0 It is sent on port 0 of CSI-RS; QCL-CSI-RS supports up to 2 ports by default. When the number of QCL-CSI-RS ports is 1, the reference signal of QCL-CSI-RS port 0 is on the port of CSI-RS.
- QCL-CSI-RS supports only 2 ports by default, and the reference signals of QCL-CSI-RS port 0 and port 1 are respectively sent on port 0 and port 1 of CSI-RS; or, QCL- The reference signals of CSI-RS port 0 and port 1 are respectively at port 0 and port of CSI-RS.
- Sent where N is the number of ports of the CSI-RS and N is a positive integer. Indicates rounding up x.
- the method further includes: indicating parameter configuration information of the QCL-CSI-RS to the terminal, where the parameter configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port number information, scrambling code identification (ID) information, subframe configuration information, relative sub- Frame configuration information, mapping band indication information; the relative subframe configuration information includes at least one of: a subframe offset or a slot offset of the QCL-CSI-RS with respect to the CSI-RS, and a QCL-CSI-RS relative to the CSI- The cycle of the RS.
- the parameter configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port number information, scrambling code identification (ID) information, subframe configuration information, relative sub- Frame configuration information, mapping band indication information
- the relative subframe configuration information includes at least one of: a subframe offset or a slot offset of the QCL-CSI-RS with respect to the CSI-RS, and a QCL-CSI-RS relative to the CSI- The cycle of the
- the method further includes: sending configuration indication information of the QCL-CSI-RS to the terminal, where the number of ports carrying the QCL-CSI-RS in the configuration indication information
- the information, the port number information is used to implicitly indicate the QCL packet information in the CSI-RS, and is determined by the number of QCL packets of the CSI-RS, and the QCL packet information is used to indicate that all the ports in the CSI-RS cannot satisfy the QCL.
- the ports are grouped and the ports that satisfy the QCL characteristics are divided into the same group.
- transmitting the corresponding QCL-CSI-RS on part or all of the ports used by the CSI-RS includes: minimizing the CSI-RS port index in the k-th packet in the k-th CSI-RS port k Send on the port, where k is a natural number.
- the configuration indication information further carries correspondence relationship information between each port of the QCL-CSI-RS and each port of the CSI-RS.
- the correspondence information is one of: a CSI-RS port corresponding to each port of the QCL-CSI-RS; and a CSI-RS port packet corresponding to each port of the QCL-CSI-RS.
- the QCL-CSI-RS and the CSI-RS are on different orthogonal frequency division multiplexing symbols or on different time slots or on a subframe or time slot with a CSI-RS time interval greater than a first predetermined threshold. send.
- the time interval between transmitting the QCL-CSI-RS and transmitting the CSI-RS is less than a second preset threshold.
- the subframe offset of the CSI-RS and the QCL-CSI-RS is pre-agreed with the terminal, and the default QCL-CSI-RS and the K port with the smallest CSI-RS index occupy the same resource location, where the subframe is biased Set to 0 and K is a positive integer.
- the QCL-CSI-RS and the CSI-RS adopt the same sequence.
- the above method further comprises: configuring the zero-power ZP CSI-RS to make the ZP CSI-RS cover the resource element RE corresponding to the QCL-CSI-RS, or by configuring the non-zero power NZP CSI-RS to make the NZP CSI At least one of the -RSs covers the RE corresponding to the QCL-CSI-RS.
- the QCL-CSI-RS is transmitted on a part of the available bandwidth, and carries the transmission band indication information of the QCL-CSI-RS in the configuration indication information.
- the method further includes: receiving frequency offset information fed back by the terminal; performing rephasing processing of the crystal oscillator based on the frequency offset information, or, in the CSI-RS and/or The frequency offset pre-calibration is performed when the DMRS is transmitted.
- a method of determining a quasi-common position is provided.
- the method for determining a quasi-co-location includes: receiving CSI-RS information configured by a network side device and QCL-CSI-RS configuration information configured for each set of CSI-RS; and CSI-RS information according to CSI-RS information and QCL-CSI - RS configuration information determines resource locations of CSI-RS and QCL-CSI-RS; utilizes CSI-RS reference signals received at resource locations of CSI-RSs and QCLs received at resource locations of QCL-CSI-RSs The CSI-RS reference signal jointly estimates the channel large-scale feature parameters.
- the channel large-scale feature parameter comprises at least one of the following: a frequency offset parameter and a frequency extension parameter.
- the method before performing the joint estimation of the channel large-scale feature parameter, the method further includes: the reference signal of the default QCL-CSI-RS port is sent on part or all of the ports used by the CSI-RS.
- the default QCL-CSI-RS is transmitted on some or all of the ports used by the CSI-RS, including one of the following: when the number of ports of the QCL-CSI-RS is 1, the default QCL-CSI-RS port 0 The reference signal is sent on port 0 of the CSI-RS; when the number of ports of the QCL-CSI-RS is 2, the reference signals of the QCL-CSI-RS port 0 and port 1 are respectively on port 0 and port 1 of the CSI-RS. Send; or, QCL-CSI-RS port 0 and port 1 reference signals are respectively on port 0 and port of CSI-RS Up, where N is the number of ports of the CSI-RS and N is a positive integer.
- receiving the CSI-RS information and the QCL-CSI-RS configuration information comprises: obtaining the port number information of the QCL-CSI-RS from the QCL-CSI-RS configuration indication information, where the port number information is used to implicitly indicate the CSI - QCL packet information in the RS, and determined by the number of QCL packets of the CSI-RS; determining the QCL packet mode of the CSI-RS according to the configuration indication information.
- determining the QCL grouping manner of the CSI-RS according to the configuration indication information includes one of the following: when the number of ports of the QCL-CSI-RS is 1, all ports of the default CSI-RS satisfy the QCL relationship; when QCL-CSI- When the number of ports on the RS is 2, the port group in all ports of the default CSI-RS Both meet QCL relationship, port group Both satisfy the QCL relationship, and the QCL relationship is not satisfied between the two port groups, and the reference signal of the default QCL-CSI-RS port 0 is sent on the port 0 of the CSI-RS, and the reference signal of the QCL-CSI-RS port 1 is CSI-RS port Sent on, where N is a positive integer.
- the number of ports of the default QCL-CSI-RS is less than or equal to two.
- receiving the CSI-RS information and the QCL-CSI-RS configuration information includes: obtaining the port number information of the QCL-CSI-RS from the QCL-CSI-RS configuration indication information, and each port and CSI of the QCL-CSI-RS. Correspondence information of each port of the RS; determining a QCL packet condition of the CSI-RS and a port of the CSI-RS corresponding to the reference signal transmission of each port of the QCL-CSI-RS according to the port number information and the correspondence relationship information.
- the port for determining the QCL packet of the CSI-RS and the CSI-RS corresponding to the reference signal transmission of each port of the QCL-CSI-RS according to the port number information and the correspondence information includes one of the following: when the correspondence information is indicated When the CSI-RS port carrying each QCL-CSI-RS port reference signal is carried, the CSI-RS port that satisfies the QCL characteristic in the default CSI-RS is an index continuous CSI-RS port, wherein the kth group satisfies the QCL characteristic.
- the port determining method of the CSI-RS is: determining the CSI-RS port P k corresponding to the QCL-CSI-RS port k and determining the CSI-RS port P k+1 corresponding to the QCL-CSI-RS port k+1 , then
- the k-group CSI-RS ports satisfying the QCL characteristics are P k ⁇ P k+1 -1; when the QCL-CSI-RS port k is the maximum port index of the QCL-CSI-RS, the k-th group satisfies the QCL characteristic.
- the port of the CSI-RS is P k to N, where N is the number of ports of the CSI-RS, k is a natural number, and N is a positive integer; when the correspondence information indicates the port grouping information of each CSI-RS that satisfies the QCL characteristic
- the reference signal on the default QCL-CSI-RS port k is transmitted on the port with the smallest CSI-RS port index in the kth packet.
- the method further includes that the resource element RE corresponding to the QCL-CSI-RS that is transmitted by default is covered by a zero-power (ZP) CSI-RS.
- ZP zero-power
- the QCL-CSI-RS configuration information is determined according to a pre-agreed manner or by means of signaling analysis, and includes at least one of the following: resource configuration indication information, QCL-CSI-RS port number information, scrambling code ID information, and subframe.
- the configuration information, the relative subframe configuration information, and the mapping band indication information; the relative subframe configuration information includes at least one of the following: a subframe offset or a time slot offset of the QCL-CSI-RS with respect to the CSI-RS, QCL-CSI- The period of the RS relative to the CSI-RS.
- the method further includes: feeding back the frequency offset estimation result to the network side device after jointly estimating the frequency offset according to the QCL-CSI-RS reference signal and the CSI-RS reference signal.
- a quasi-common position configuration apparatus is provided.
- the apparatus for configuring a quasi-co-location includes: an obtaining module configured to acquire all CSI-RSs currently configured; and a first configuration module configured to separately configure each CSI-RS in all CSI-RSs Corresponding QCL-CSI-RS, and all the CSI-RSs and the QCL-CSI-RSs corresponding to the sets of CSI-RSs are configured to the terminal, wherein the QCL-CSI-RS is used to jointly estimate the channel large-scale features with the CSI-RS. parameter.
- the channel large-scale feature parameter comprises at least one of the following: a frequency offset parameter and a frequency extension parameter.
- the apparatus further includes: a sending module, configured to send a corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS.
- a sending module configured to send a corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS.
- the sending module is configured to perform the sending operation according to one of the following ways: the QCL-CSI-RS supports only one port by default, and the reference signal of the QCL-CSI-RS port 0 is sent on the port 0 of the CSI-RS; QCL -CSI-RS supports up to 2 ports by default.
- the number of QCL-CSI-RS ports is 1, the reference signal of QCL-CSI-RS port 0 is sent on port 0 of CSI-RS; when QCL-CSI-RS port When the number is 2, the reference signals of QCL-CSI-RS port 0 and port 1 are respectively sent on port 0 and port 1 of the CSI-RS; or, the reference signals of QCL-CSI-RS port 0 and port 1 are respectively at CSI.
- -RS port 0 and port Sent where N is the number of ports of the CSI-RS and N is a positive integer. Indicates that x is rounded up; QCL-CSI-RS supports only 2 ports by default, and the reference signals of QCL-CSI-RS port 0 and port 1 are respectively sent on port 0 and port 1 of CSI-RS; or, QCL- The reference signals of CSI-RS port 0 and port 1 are respectively at port 0 and port of CSI-RS. Sent, where N is the number of ports of the CSI-RS and N is a positive integer. Indicates rounding up x.
- the foregoing apparatus further includes: a first indication module, configured to indicate parameter configuration information of the QCL-CSI-RS to the terminal, where the parameter configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port Number information, scrambling code ID information, subframe configuration information, relative subframe configuration information, mapping band indication information; relative subframe configuration information includes at least one of: QCL-CSI-RS subframe offset with respect to CSI-RS Or slot offset, the period of the QCL-CSI-RS relative to the CSI-RS.
- a first indication module configured to indicate parameter configuration information of the QCL-CSI-RS to the terminal, where the parameter configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port Number information, scrambling code ID information, subframe configuration information, relative subframe configuration information, mapping band indication information; relative subframe configuration information includes at least one of: QCL-CSI-RS subframe offset with respect to CSI-RS Or slot offset, the period of the QCL-CSI-RS relative to the CSI
- the foregoing apparatus further includes: a second indication module, configured to send configuration indication information of the QCL-CSI-RS to the terminal, where the configuration indication information carries the port number information of the QCL-CSI-RS, and the port number information is used.
- the QCL packet information in the CSI-RS is implicitly indicated and determined by the number of QCL packets of the CSI-RS, and the QCL packet information is used to indicate that when all the ports in the CSI-RS cannot meet the QCL characteristics, the port is performed. Grouping, the ports that satisfy the QCL characteristics are divided into the same group.
- the transmitting module is further configured to transmit the reference signal on the QCL-CSI-RS port k on the port with the smallest CSI-RS port index in the kth packet, where k is a natural number.
- the configuration indication information further carries correspondence relationship information between each port of the QCL-CSI-RS and each port of the CSI-RS.
- the correspondence information is one of: a CSI-RS port corresponding to each port of the QCL-CSI-RS; and a CSI-RS port packet corresponding to each port of the QCL-CSI-RS.
- the QCL-CSI-RS and the CSI-RS are on different orthogonal frequency division multiplexing symbols or on different time slots or on a subframe or time slot with a CSI-RS time interval greater than a first predetermined threshold. send.
- the time interval between transmitting the QCL-CSI-RS and transmitting the CSI-RS is less than a second preset threshold.
- the foregoing apparatus further includes: a first processing module, configured to pre-arrange the subframe offsets of the CSI-RS and the QCL-CSI-RS with the terminal, and default the minimum K indexes of the QCL-CSI-RS and the CSI-RS index
- the ports occupy the same resource location, where the subframe offset is not 0 and K is a positive integer.
- the QCL-CSI-RS and the CSI-RS adopt the same sequence.
- the apparatus further includes: a second configuration module, configured to configure a zero-power (ZP) CSI-RS to enable the ZP CSI-RS to cover a resource element RE corresponding to the QCL-CSI-RS, or by configuring a non-zero
- the power (NZP) CSI-RS is such that at least one of the NZP CSI-RSs covers the RE corresponding to the QCL-CSI-RS.
- the QCL-CSI-RS is transmitted on a part of the available bandwidth, and carries the transmission band indication information of the QCL-CSI-RS in the configuration indication information.
- the apparatus further includes: a receiving module configured to receive frequency offset information fed back by the terminal; and a second processing module configured to perform phase re-phase locking processing of the crystal oscillator based on the frequency offset information, or in CSI-RS and/or DMRS Frequency offset pre-calibration when transmitting.
- a receiving module configured to receive frequency offset information fed back by the terminal
- a second processing module configured to perform phase re-phase locking processing of the crystal oscillator based on the frequency offset information, or in CSI-RS and/or DMRS Frequency offset pre-calibration when transmitting.
- a quasi-common position determining apparatus is provided.
- the determining device of the quasi-common position includes: a receiving module, configured to receive CSI-RS information configured by the network side device, and QCL-CSI-RS configuration information configured for each set of CSI-RS; first determining module And being configured to determine resource locations of the CSI-RS and the QCL-CSI-RS according to the CSI-RS information and the QCL-CSI-RS configuration information; and the estimating module is configured to use the CSI-RS received at the resource location of the CSI-RS
- the reference signal and the QCL-CSI-RS reference signal received at the resource location of the QCL-CSI-RS jointly estimate channel large-scale feature parameter information.
- the channel large-scale feature parameter comprises at least one of the following: a frequency offset parameter and a frequency extension parameter.
- the apparatus further includes: a second determining module, where the reference signal set as the default QCL-CSI-RS port is sent on part or all of the ports used by the CSI-RS.
- the second determining module is configured to perform one of the following operations: when the number of ports of the QCL-CSI-RS is 1, the reference signal of the default QCL-CSI-RS port 0 is sent on the port 0 of the CSI-RS; When the number of ports of the QCL-CSI-RS is 2, the reference signals of the QCL-CSI-RS port 0 and port 1 are respectively sent on the port 0 and port 1 of the CSI-RS; or, the QCL-CSI-RS port 0 and The reference signals of port 1 are respectively at port 0 and port of CSI-RS.
- N is the number of ports of the CSI-RS and N is a positive integer.
- the receiving module includes: a first acquiring unit, configured to obtain port number information of the QCL-CSI-RS from the QCL-CSI-RS configuration indication information, where the port number information is used to implicitly indicate the CSI-RS
- the QCL packet information is determined by the number of QCL packets of the CSI-RS; the first determining unit is configured to determine a QCL grouping manner of the CSI-RS according to the configuration indication information.
- the third determining module is configured to perform one of the following operations: when the number of ports of the QCL-CSI-RS is 1, all ports of the default CSI-RS satisfy the QCL relationship; when the number of ports of the QCL-CSI-RS is 2, the port group in all ports of the default CSI-RS Both meet QCL relationship, port group Both satisfy the QCL relationship, and the QCL relationship is not satisfied between the two port groups, and the reference signal of the default QCL-CSI-RS port 0 is sent on the port 0 of the CSI-RS, and the reference signal of the QCL-CSI-RS port 1 is CSI-RS port Sent on, where N is a positive integer.
- the number of ports of the default QCL-CSI-RS is less than or equal to two.
- the receiving module includes: a second obtaining unit, configured to acquire port number information of the QCL-CSI-RS and correspondence information of each port of the QCL-CSI-RS and each port of the CSI-RS; and a second determining unit, It is configured to determine a QCL packet condition of the CSI-RS and a port of the CSI-RS corresponding to the reference signal of each port of the QCL-CSI-RS according to the port number information and the correspondence relationship information.
- the fourth determining module is configured to perform one of the following operations: when the correspondence information indicates a CSI-RS port that carries each QCL-CSI-RS port reference signal, the CSI that satisfies the QCL characteristic in the default CSI-RS
- the RS port is an index continuous CSI-RS port, wherein the k-th group of the CSI-RS that satisfies the QCL characteristic is determined by determining the CSI-RS port P k corresponding to the QCL-CSI-RS port k and determining the QCL.
- the k-th CSI-RS port k+1 corresponds to the CSI-RS port P k+1 , then the k-th group of the CSI-RS that satisfies the QCL characteristic is P k - P k+1 -1; when the QCL-CSI-RS port When k is the maximum port index of the QCL-CSI-RS, the port of the k-th CSI-RS that satisfies the QCL characteristic is P k to N, where N is the number of ports of the CSI-RS, k is a natural number, and N is a positive integer;
- the reference signal on the default QCL-CSI-RS port k is performed on the port with the smallest CSI-RS port index in the kth packet. send.
- the apparatus further includes: a fifth determining module, wherein the resource element RE corresponding to the QCL-CSI-RS set to be transmitted by default is covered by the ZP CSI-RS.
- the first determining module is configured to determine, according to a pre-agreed manner or by means of signaling, that the QCL-CSI-RS configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port number information, Scrambling code ID information, subframe configuration information, relative subframe configuration information, and mapping band indication information; the relative subframe configuration information includes at least one of: a subframe offset or a time slot of the QCL-CSI-RS with respect to the CSI-RS Bias, the period of the QCL-CSI-RS relative to the CSI-RS.
- the apparatus further includes: a feedback module, configured to feed back the frequency offset estimation result to the network side device after jointly estimating the frequency offset according to the QCL-CSI-RS reference signal and the CSI-RS reference signal.
- a feedback module configured to feed back the frequency offset estimation result to the network side device after jointly estimating the frequency offset according to the QCL-CSI-RS reference signal and the CSI-RS reference signal.
- all CSI-RSs of the current configuration are obtained, and corresponding QCL-CSI-RSs are respectively configured for each CSI-RS in all CSI-RSs, where QCL-CSI-RS is used for CSI -RS jointly estimates channel large-scale feature parameters; configures all CSI-RSs and QCL-CSI-RSs corresponding to each set of CSI-RSs to the terminal, thereby solving the lack of a large-scale feature of the cooperative UE in the UDN in the related art
- the problem of the solution of the parameter estimation can further avoid the noise influence of the CSI-RS when used for frequency offset and frequency extension estimation, and can directly use the CSI-RS as the cell discovery signal.
- FIG. 1 is a schematic diagram of a pattern of different port REs in a set of CSI-RSs according to the related art
- FIG. 2 is a flow chart of a method for configuring a quasi-common position according to an embodiment of the present invention
- FIG. 3 is a flow chart of a method for determining a quasi-common position according to an embodiment of the present invention
- FIG. 4 is a schematic diagram of performing a QCL-CSI-RS configuration in accordance with a preferred embodiment of the present invention
- FIG. 5 is a structural block diagram of a quasi-common position configuration apparatus according to an embodiment of the present invention.
- FIG. 6 is a structural block diagram of a quasi-common position configuration apparatus according to a preferred embodiment of the present invention.
- FIG. 7 is a block diagram showing the structure of a quasi-common position determining apparatus according to an embodiment of the present invention.
- Figure 8 is a block diagram showing the structure of a quasi-common position determining apparatus according to a preferred embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a system for QCL enhancement in cell virtualization according to a preferred embodiment of the present invention.
- FIG. 2 is a flow chart of a method of configuring a quasi-co-location according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following processing steps:
- Step S202 Acquire all CSI-RSs currently configured
- Step S204 Configure a corresponding QCL-CSI-RS for each set of CSI-RSs in all CSI-RSs, where the QCL-CSI-RS is used to jointly estimate channel large-scale feature parameters with the CSI-RS.
- Step S206 All the CSI-RSs and the QCL-CSI-RSs corresponding to the sets of CSI-RSs are configured to the terminal.
- a related solution for large-scale feature parameter estimation in a coordinated UE in a UDN is lacking in the related art.
- the estimation problem of downlink large-scale parameters is considered in the idea of cell virtualization based on the method shown in FIG.
- the terminal can jointly estimate downlink large-scale parameter information according to CSI-RS and QCL-CSI-RS, especially frequency offset and frequency in downlink large-scale parameters.
- Extended parameters are configured.
- QCL-CSI-RS may also be referred to as a joint parameter estimation CSI-RS, a reference CSI-RS, and other equivalent names, which do not constitute an undue limitation to the present invention.
- the channel large-scale feature parameter may include, but is not limited to, at least one of the following: a frequency offset parameter and a frequency extension parameter.
- step S204 the following operations may also be included:
- Step S1 Send the corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS.
- transmitting the corresponding QCL-CSI-RS on at least part or all of the ports used by the CSI-RS may include at least one of the following manners:
- the QCL-CSI-RS supports only one port by default, and the reference signal of the QCL-CSI-RS port 0 is sent on the port 0 of the CSI-RS.
- QCL-CSI-RS supports up to 2 ports by default.
- the number of QCL-CSI-RS ports is 1, the reference signal of QCL-CSI-RS port 0 is sent on port 0 of CSI-RS.
- the reference signals of QCL-CSI-RS port 0 and port 1 are respectively sent on port 0 and port 1 of the CSI-RS; or QCL-CSI-RS port 0 and The reference signals of QCL-CSI-RS port 1 are respectively at port 0 and port of CSI-RS.
- N is the number of ports of the CSI-RS and N is a positive integer, preferably N is an even number, and N is greater than or equal to 2, Indicates rounding up x.
- Manner 3 When the number of ports of the CSI-RS is greater than or equal to 2, the QCL-CSI-RS defaults to 2 ports, and the reference signals of the default QCL-CSI-RS port 0 and port 1 are respectively at the port 0 of the CSI-RS. Transmitted on port 1; or the reference signals of QCL-CSI-RS port 0 and QCL-CSI-RS port 1 are respectively at port 0 and port of CSI-RS Up, where N is the number of ports of the CSI-RS and N is a positive integer, preferably N is an even number, and N is greater than or equal to 2, Indicates rounding up.
- the port number of the QCL-CSI-RS is configured on the network side and/or the reference signal of each port of the QCL-CSI-RS is transmitted and the corresponding port of the CSI-RS is transmitted, and the QCL-CSI-RS port is determined according to the corresponding relationship.
- the CSI-RS port of the reference signal sequence is configured on the network side and/or the reference signal of each port of the QCL-CSI-RS is transmitted and the corresponding port of the CSI-RS is transmitted, and the QCL-CSI-RS port is determined according to the corresponding relationship.
- step S204 the following steps may also be included:
- Step S2 Instruct the parameter configuration information of the QCL-CSI-RS to the terminal, where the parameter configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port number information, scrambling code identification ID information, and subframe configuration.
- step S204 the following operations may also be included:
- Step S3 Sending configuration indication information of the QCL-CSI-RS to the terminal, where the configuration indication information carries the port number information of the QCL-CSI-RS, and the port number information is used to implicitly indicate the QCL packet information in the CSI-RS. And determined by the number of QCL packets of the CSI-RS, the QCL packet information is used to indicate that when all the ports in the CSI-RS cannot satisfy the QCL characteristics, the ports are grouped, and the ports satisfying the QCL characteristics are divided into the same group. do not.
- transmitting the corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS may further include: the reference signal on the QCL-CSI-RS port k is at the kth The packet is sent on the port with the smallest CSI-RS port index in the packet, where k is a natural number.
- the configuration indication information may further carry correspondence information between each port of the QCL-CSI-RS and each port of the CSI-RS.
- the foregoing correspondence information may be one of the following:
- the QCL-CSI-RS and the CSI-RS are transmitted on different orthogonal frequency division multiplexing symbols or on different time slots or greater than a first predetermined threshold.
- the time interval between transmitting the QCL-CSI-RS and transmitting the CSI-RS is less than a second preset threshold.
- the subframe offset of the CSI-RS and the QCL-CSI-RS is pre-agreed with the terminal, and the default QCL-CSI-RS and the K port with the smallest CSI-RS index occupy the same resource location, where the subframe is biased Set to 0 and K is a positive integer.
- the transmission period of the QCL-CSI-RS is twice the transmission period of the CSI-RS; or,
- the transmission period of the QCL-CSI-RS is twice the transmission period of the CSI-RS; or,
- the transmission period of the QCL-CSI-RS is 4 times of the transmission period of the CSI-RS; or,
- the transmission period of the QCL-CSI-RS is eight times the transmission period of the CSI-RS.
- the QCL-CSI-RS uses the same sequence as the CSI-RS.
- the above method may further include the following operations:
- Step S4 By configuring the ZP CSI-RS to make the ZP CSI-RS cover the RE corresponding to the QCL-CSI-RS, or by configuring the NZP CSI-RS to cover at least one set of the NZP CSI-RS with the QCL-CSI -RE corresponding to RS.
- the QCL-CSI-RS may transmit on a part of the available bandwidth, and carry the transmission band indication information of the QCL-CSI-RS in the configuration indication information.
- step S204 the following steps may also be included:
- Step S5 receiving frequency offset information fed back by the terminal
- Step S6 performing rephasing processing of the crystal oscillator based on the frequency offset information, or performing frequency offset pre-calibration when transmitting the CSI-RS and/or the demodulation reference signal DMRS.
- FIG. 3 is a flow chart of a method of determining a quasi-common position in accordance with an embodiment of the present invention. As shown in FIG. 3, the method may include the following processing steps:
- Step S302 Receive CSI-RS information configured by the network side device and QCL-CSI-RS configuration information configured for each set of CSI-RSs;
- Step S304 Determine resource locations of the CSI-RS and the QCL-CSI-RS according to the CSI-RS information and the QCL-CSI-RS configuration information;
- Step S306 Jointly estimating the large-scale feature parameter information by using the CSI-RS reference signal received at the resource location of the CSI-RS and the QCL-CSI-RS reference signal received at the resource location of the QCL-CSI-RS.
- the channel large-scale feature parameter may include, but is not limited to, at least one of the following:
- Frequency offset parameter frequency extension parameter.
- the following operations may also be included:
- Step S7 The default QCL-CSI-RS is transmitted on some or all of the ports used by the CSI-RS.
- the sending of the default QCL-CSI-RS on some or all of the ports used by the CSI-RS may include one of the following ways:
- Mode 3 In the case that the default QCL-CSI-RS is 2 ports, the reference signals of the default QCL-CSI-RS port 0 and port 1 are respectively sent on port 0 and port 1 of the CSI-RS; or the default QCL-CSI - RS port 0 and QCL-CSI-RS port 1 reference signals are respectively on port 0 and port of CSI-RS Up, where N is the number of ports of the CSI-RS and N is a positive integer, preferably N is an even number, and N is greater than or equal to 2, Indicates rounding up.
- Manner 4 The terminal receives the number of ports of the QCL-CSI-RS configured on the network side and/or the correspondence between the reference signal transmission of each port of the QCL-CSI-RS and the ports of the CSI-RS, and according to the number of QCL-CSI-RS ports The information and/or the CSI-RS port correspondence information determines the CSI-RS port corresponding to the QCL-CSI-RS transmission reference signal.
- the number of ports of the default CSI-RS of the terminal must not be smaller than the number of ports of the QCL-CSI-RS.
- receiving the CSI-RS information and the QCL-CSI-RS configuration information may include the following steps:
- Step S8 Obtain port number information of the QCL-CSI-RS from the configuration indication information of the QCL-CSI-RS, where the port number information is used to implicitly indicate the QCL packet information in the CSI-RS, and the QCL of the CSI-RS The number of groups is determined;
- Step S9 Determine a QCL grouping manner of the CSI-RS according to the configuration indication information.
- determining the QCL grouping manner of the CSI-RS according to the configuration indication information may include one of the following manners:
- the number of ports of the default QCL-CSI-RS is less than or equal to two.
- receiving the CSI-RS information and the QCL-CSI-RS configuration information may include the following operations:
- Step S10 Obtain, from the QCL-CSI-RS configuration indication information, the port number information of the QCL-CSI-RS and the correspondence relationship between each port of the QCL-CSI-RS and each port of the CSI-RS;
- Step S11 Determine a QCL packet condition of the CSI-RS and a port of the CSI-RS corresponding to the reference signal transmission of each port of the QCL-CSI-RS according to the port number information and the correspondence relationship information.
- determining the QCL packet condition of the CSI-RS according to the port number information and the correspondence information, and the port of the CSI-RS corresponding to the reference signal of each port of the QCL-CSI-RS may include one of the following manners. :
- the CSI-RS port that satisfies the QCL characteristic in the default CSI-RS is an index-continuous CSI-RS port, where
- the port determining method of the k-th CSI-RS that satisfies the QCL characteristic is: determining the CSI-RS port P k corresponding to the QCL-CSI-RS port k and determining the CSI-RS corresponding to the QCL-CSI-RS port k+1 Port P k+1 , the port of the k -th CSI-RS that satisfies the QCL characteristic is P k ⁇ P k+1 ⁇ 1; when the QCL-CSI-RS port k is the maximum port index of the QCL-CSI-RS, Then, the port of the k -th CSI-RS that satisfies the QCL characteristic is P k to N, where N is the number of ports of the CSI-
- the above method may further comprise the following steps:
- Step S12 The resource element RE corresponding to the QCL-CSI-RS transmitted by default is covered by the zero-power ZP CSI-RS.
- the QCL configuration information may be determined according to a pre-agreed manner or by means of signaling resolution, including at least one of the following:
- mapping band indication information
- the foregoing relative subframe configuration information may include, but is not limited to, at least one of: a subframe offset or a slot offset of the QCL-CSI-RS with respect to the CSI-RS, and a period of the QCL-CSI-RS with respect to the CSI-RS.
- step S304 After jointly estimating the large-scale feature parameter information in step S304, the following operations may also be included:
- Step S13 After jointly estimating the frequency offset according to the QCL-CSI-RS reference signal and the CSI-RS reference signal, the frequency offset estimation result is fed back to the network side device.
- a method of configuring the QCL-CSI-RS for each set of CSI-RS is provided in the preferred embodiment. Based on the method, the network side device configures a corresponding QCL-CSI-RS for each set of configured CSI-RSs, and configures related information of the QCL-CSI-RSs to the terminal.
- FIG. 4 is a schematic diagram of a QCL-CSI-RS configuration in accordance with a preferred embodiment of the present invention. As shown in FIG.
- the resource location corresponding to the target cell CSI-RS is The illustrated RE, the CSI-RS configurations of the neighboring cell #1 and the neighboring cell #2 are respectively with The corresponding location, at this time, the QCL-CSI-RS can be configured at a position that does not conflict with the neighboring cell #1 and the neighboring cell #2, as shown in the figure. The location shown.
- the target cell may have multiple neighboring cells.
- the QCL-CSI-RS may be configured to other subframes according to the CSI-RS usage of the neighboring cell; or When the number of CSI-RS ports between the Macro and the small cell is different, or when the number of CSI-RS ports between the small cells is different, the CSI-RS re-use factor may be misaligned. In this case, it is difficult to be directly used as the NZP.
- the resources configured by the CSI-RS are configured as QCL-CSI-RS.
- the location of the QCL-CSI-RS needs to meet, but is not limited to, at least one of the following conditions:
- the QCL-CSI-RS and the CSI-RS are not at least not transmitted on the same OFDM symbol or the same time slot, or the time interval between the QCL-CSI-RS and the corresponding CSI-RS is greater than or equal to the first time. Preset threshold. The advantage of this is that it can better suppress the effects of noise.
- Condition 2 The time interval between the QCL-CSI-RS and the corresponding CSI-RS is less than or equal to a second preset threshold. The advantage of this is that it can support a wider range of frequency offset estimates.
- the network side device may further determine the relative positional relationship of the QCL-CSI-RS according to the speed of the terminal or the potential frequency offset range estimation. For example, when the terminal moves at a high speed and/or considers that there is a large frequency offset between the current transmission and reception dual-transmission, the network-side device should configure the QCL-CSI-RS to be the same as the CSI-RS when configuring the QCL-CSI-RS. If the terminal moves at a slower speed and/or the current transmission and reception dual transmission has a smaller frequency offset, the network side device should try to use QCL-CSI when configuring the QCL-CSI-RS. - the RS is configured in a subframe different from the CSI-RS or a subframe farther away from the CSI-RS;
- the network side device may send the QCL-CSI-RS on the same part or all the ports as the CSI-RS, and may instruct the terminal to send the QCL-CSI-RS in a predetermined manner or signaling manner.
- the CSI-RS port used.
- the QCL-CSI-RS configured by the network side device for the terminal should include at least one of the following information:
- the relative subframe configuration information should include at least one of the following configuration information of the QCL-CSI-RS relative to the CSI-RS: a subframe offset or a slot offset relative to the CSI-RS, relative to the CSI- The cycle of the RS.
- the period of the QCL-CSI-RS is greater than or equal to the period of the CSI-RS, and the relative period multiple relationship preferably takes one or more of 1/2/4/8/16/32.
- the network side device configures configuration information of the QCL-CSI-RS corresponding to each set of CSI-RSs to the terminal. Then, the terminal may jointly perform channel large-scale feature parameter estimation of at least frequency offset and frequency extension according to the received CSI-RS and the QCL-CSI-RS information corresponding to the CSI-RS.
- the terminal may perform estimation of channel large-scale parameters according to the CSI-RS and its corresponding QCL-CSI-RS, thereby solving the problem that the existing CSI-RS pattern design is used for frequency offset and frequency extension estimation.
- the problem of large noise impact can be determined at the same time.
- the network side device can determine parameters such as resource location, time slot or subframe configuration, and periodic configuration of the QCL-CSI-RS according to the CSI-RS configuration of the surrounding cell and the potential frequency offset condition, thereby making the QCL-CSI-RS
- the configuration avoids collisions with CSI-RS configurations of other surrounding cells as much as possible, thereby reducing interference to neighboring cell CSI-RSs.
- the parameters of the relevant QCL-CSI-RS are notified to the terminal in a configured manner.
- the configuration of the partial parameters may be performed by the network side device and the terminal in a pre-agreed manner.
- the reference signal sequence corresponding to each port of the network side device and/or the default QCL-CSI-RS of the terminal is based on the same interference signal sequence corresponding to each port of the CSI-RS.
- the code ID is generated. In this way, when the QCL-CSI-RS parameter is configured for the terminal, the signaling overhead for configuring the QCL-CSI-RS reference signal sequence scrambling code ID can be saved.
- the network side device and the terminal may support only one port by default QCL-CSI-RS, and default to port 0 of the CSI-RS (the first port of the CSI-RS, corresponding to the LTE in LTE) Port 15) transmits a reference signal sequence of the QCL-CSI-RS.
- the terminal can map the corresponding RE and CSI-RS according to the QCL-CSI-RS.
- the RE corresponding to the port 0 map jointly estimates at least the frequency offset and the frequency extension channel large-scale feature parameters. At this time, all ports in the terminal default CSI-RS satisfy the QCL characteristics.
- the network side device and the terminal may support the maximum number of ports by the QCL-RS, and carry the port number information in the configuration information.
- the number of QCL-CSI-RS ports is 1, the reference signal of the default QCL-CSI-RS is sent on port 0 of the CSI-RS; when the number of QCL-CSI-RS ports is 2, the default QCL-CSI-RS The reference signals of port 0 and port 1 are sent on port 0 and port 1 of the CSI-RS, respectively, or on port 0 of the CSI-RS.
- N is the number of ports of the CSI-RS and N is a positive integer, preferably N is an even number, and N is greater than or equal to 2, Indicates rounding up. .
- the terminal can default to the QCL characteristic of all ports in the CSI-RS; when the number of QCL-CSI-RS ports is 2, the estimation accuracy can be improved by averaging the estimated characteristics on the two ports.
- the network side device and the terminal may fix the default QCL-RS as 2 ports, and the reference signals of the port 0 and port 1 of the default QCL-CSI-RS are respectively sent on the port 0 and port 1 of the CSI-RS, or Port 0 of the CSI-RS, Up, where N is the number of ports of the CSI-RS and N is a positive integer, preferably N is an even number, and N is greater than or equal to 2, Indicates rounding up.
- the base station location relationship between the CSI-RS and the corresponding QCL-CSI-RS may be pre-agreed between the base station and the terminal, and the minimum K ports of the QCL-CSI-RS and the CSI-RS index are defaulted.
- the period of the QCL-CSI-RS is greater than or equal to the period of the CSI-RS.
- the CSI-RS and the corresponding QCL-CSI-RS are not located at least on the same time slot, where K represents the number of ports of the QCL-CSI-RS, and by default, the value of K is 1.
- the network side device can reduce the overhead of QCL-CSI-RS related parameter configuration signaling.
- the network side device after the network side device has configured the QCL-CSI-RS for the terminal, the network side device needs to avoid the RE occupied by the QCL-CSI-RS when performing data mapping.
- the network side device can configure the ZP CSI-RS (zero) in order to avoid the complexity of the processing of the data resource demapping or the complexity of the data resource demapping based on the multiple signaling.
- Power CSI-RS making The ZP CSI-RS covers the RE corresponding to the QCL-CSI-RS.
- the terminal transmits the RE of the QCL-CSI-RS by default and is covered by the ZP-CSI-RS. It is no longer necessary to repeatedly consider the resource demapping problem based on the QCL-CSI-RS information.
- the network side device configures a ZP CSI-RS (zero power CSI-RS), and the ZP CSI-RS does not cover the QCL-CSI-RS, but when the NZP CSI-RS is configured, one set is made.
- the NZP CSI-RS (non zero power CSI-RS) includes the RE corresponding to the QCL-CSI-RS.
- the network side device configures the ZP CSI-RS and the NZP CSI-RS
- the terminal After receiving the QCL-CSI-RS configuration information number corresponding to the CSI-RS, the terminal additionally considers the rate matching of the solution data mapping separately for the QCL-CSI-RS.
- the QCL-CSI-RS may be allowed to be on a part of the bandwidth.
- the transmission band indication information of the QCL-CSI-RS is carried in the configuration indication information of the QCL-CSI-RS.
- the network side device can flexibly select one or more small groups because the different small cell (or Pico, or transmission point (TP)) is transparent to the terminal in the UDN based on the cell virtualization configuration.
- the cell jointly transmits data for the terminal.
- different CSI-RS ports in each CSI-RS are transmitted on different small cells. Therefore, different ports of the same set of CSI-RS no longer satisfy the QCL relationship.
- the QCL-CSI-RS port number information is carried, and all the CSI-RSs are implicitly indicated by the number of QCL-CSI-RS ports. Whether the port satisfies the QCL relationship.
- the number of default QCL-CSI-RS ports of the network side device and the terminal is at most 2.
- the number of QCL-CSI-RS ports is 1, all ports of the terminal default CSI-RS satisfy the QCL relationship.
- the number of QCL-CSI-RS ports is 2, the reference signals of ports 0 and 1 of the default QCL-CSI-RS are respectively at port 0 of the CSI-RS. Sent on, where N is the number of ports of the CSI-RS.
- the terminal When the number of QCL-CSI-RS ports is 2, the terminal defaults to the CSI-RS port. Meet QCL relationship, CSI-RS port The QCL relationship is satisfied, and the QCL relationship is not satisfied between the two groups by default.
- At least the frequency offset and the frequency extension parameter in the channel large-scale parameter corresponding to the CSI-RS and the QCL-CSI-RS estimation may be supported when the network side device sends the terminal based on the two small cell joints. Thereby improving the channel estimation and detection performance in the case of joint transmission.
- At least the frequency offset and frequency extension parameters in the channel large-scale parameters corresponding to the CSI-RS and QCL-CSI-RS estimation are supported only when the two small cell joints are used for terminal transmission.
- the QCL-CSI-RS configuration indication information carries the port number information, and the port number implicitly indicates the QCL packet information in the CSI-RS, and is determined by the number of QCL packets of the CSI-RS, where
- the QCL packet information in the CSI-RS means that when all the ports in the CSI-RS cannot satisfy the QCL characteristics, the ports can be grouped so that the ports in which the QCL characteristics are satisfied are located in the same group.
- a plurality of QCL-CSI-RS ports may be supported, and port correspondence information of each port of the QCL-CSI-RS and the CSI-RS is included in the QCL-CSI-RS configuration indication information, where The port correspondence between each port of the QCL-CSI-RS and the CSI-RS indicates the CSI-RS port corresponding to each port in the QCL-CSI-RS port.
- the QCL-CSI-RS configuration indication it is indicated which port of the CSI-RS is transmitted by each port of the QCL-CSI-RS. If the correspondence between each port of the QCL-CSI-RS and the CSI-RS port is: QCL-CSI-RS port 0 corresponds to CSI-RS port 0, and QCL-CSI-RS port 1 corresponds to CSI-RS port 4, indicating CSI -RS ports 0 to 3 satisfy the QCL relationship, and CSI-RS ports 4 to 7 are satisfied. QCL relationship; and QCL relationship is not satisfied between the two groups, and the reference signal of the terminal default QCL-CSI-RS port 0 is transmitted at CSI-RS port 0; QCL-CSI-RS port 1 is transmitted on CSI-RS port 4.
- the QCL-CSI-RS is configured with 3 ports, it means that there are 3 groups of ports in the CSI-RS that satisfy the QCL relationship.
- the QCL-CSI-RS configuration indication is performed, if the indicated QCL-CSI-RS ports and CSIs are specified.
- the RS port correspondence is: QCL-CSI-RS port 0 corresponds to CSI-RS port 0, QCL-CSI-RS port 1 corresponds to CSI-RS port 4, and QCL-CSI-RS port 2 corresponds to CSI-RS port 6, the CSI-RS ports 0 to 3 satisfy the QCL relationship, the CSI-RS ports 4 to 5 satisfy the QCL relationship, the CSI-RS ports 6 to 7 satisfy the QCL relationship, and the QCL relationship is not satisfied between the three groups, and the terminal defaults.
- the reference signal of QCL-CSI-RS port 0 is transmitted on CSI-RS port 0; QCL-CSI-RS port 1 is transmitted on CSI-RS port 4, and QCL-CSI-RS port 2 is transmitted on CSI-RS port 6.
- the CSI-RS port of the terminal default CSI-RS that satisfies the QCL is an index consecutive CSI-RS port.
- Port method for determining the k-th group satisfies the QCL CSI-RS for: determining QCL-CSI-RS ports k corresponding CSI-RS ports P k, is determined QCL-CSI-RS ports k + 1 corresponding to the CSI-RS ports P k +1 , the port of the k -th CSI-RS satisfying the QCL is P k ⁇ P k+1 -1, wherein when the port k is the maximum port index of the QCL-CSI-RS, the k-th group satisfies the CSI of the QCL -
- the port of the RS is P k ⁇ N, where N is the number of ports of the CSI-RS.
- the preferred embodiment provided by the preferred embodiment can more flexibly support the network side device to perform joint transmission based on multiple small cells. Provides flexibility for network-side devices to adjust to actual conditions.
- At least the frequency offset and frequency extension parameters in the channel large-scale parameters corresponding to the CSI-RS and QCL-CSI-RS estimation are supported only when the two small cell joints are used for the terminal transmission.
- multiple small cell joint transmissions may be supported, but the terminal is required to assume that the CSI-RS ports satisfying the QCL in the CSI-RS are index consecutive CSI-RS ports.
- the QCL-CSI-RS configuration indication information carries the port number information, and the port number implicitly indicates the QCL packet information in the CSI-RS, and is determined by the QCL packet information of the CSI-RS, where CSI
- the QCL packet information in the RS means that when all the ports in the CSI-RS cannot satisfy the QCL characteristics, the ports are grouped so that the ports in which the QCL characteristics are satisfied are located in the same group.
- multiple QCL-CSI-RS ports may be supported and the CSI-RS port packets corresponding to each port of the QCL-CSI-RS are indicated.
- the reference signal on the QCL-CSI-RS port k is sent on the port with the smallest CSI-RS port index in the kth QCL packet, and is in the QCL-CSI-RS.
- the configuration indication information includes the correspondence between the ports of the QCL-CSI-RS and the ports of the CSI-RS.
- the number of CSI-RS ports is 8; and QCL-CSI-RS is configured with 2 ports, which means that there are two groups of ports in the CSI-RS that satisfy the QCL relationship, and the configuration indicates that the QCL-CSI-RS ports and CSI-
- the CSI-RS port packet corresponding to each QCL-CSI-RS port is explicitly indicated; for example, the QCL-CSI-RS port 0 corresponds to the CSI-RS port ⁇ 0123 ⁇ , and the QCL-CSI-RS port 1 Corresponding to the port ⁇ 4567 ⁇ of the CSI-RS, this means that the CSI-RS has two sets of ports respectively satisfying the QCL relationship, and the reference signal on the QCL-CSI-RS port is the CSI-RS port in the kth QCL packet.
- the port with the smallest index is transmitted, that is, the reference signal of port 0 is transmitted on CSI-RS port 0, and the reference signal of port QCL-CSI-RS port 1 is transmitted on CSI-
- different port grouping relationships of the terminal CSI-RSs can be indicated by explicit signaling, and the flexibility of QCL port configuration in the CSI-RS is further improved at the cost of partial additional signaling.
- the terminal joints the QCL-CSI-RS and the corresponding CSI-RS to measure at least one of a frequency offset and a frequency expansion large-scale parameter on one or more QCL-CSI-RS ports.
- the measured frequency offset parameter is fed back to the network side device.
- the network side device Based on the feedback of the terminal, the network side device performs frequency offset calibration on the small cell or performs frequency offset and correction when transmitting the signal.
- the terminal when performing frequency offset parameter feedback, directly feeds back to the node established by the radio resource control (RRC) connection, and the node sends the frequency offset calibration information to other nodes to be corrected.
- RRC radio resource control
- the RRC connection establishing node or the centralized control node notifies the relevant small cell to receive the feedback information of the terminal, and performs respective correction based on the frequency offset calibration information fed back by the terminal.
- the terminal may periodically perform feedback through a physical uplink control channel (PUCCH), or perform non-period feedback based on a physical uplink shared channel (PUSCH) for non-periodical feedback or event triggering.
- PUCCH physical uplink control channel
- PUSCH physical uplink shared channel
- FIG. 5 is a structural block diagram of a configuration apparatus of a quasi-common position according to an embodiment of the present invention.
- the quasi-common location configuration apparatus may include: an obtaining module 100, configured to acquire all CSI-RSs currently configured; A configuration module 102 is configured to separately configure a corresponding QCL-CSI-RS for each CSI-RS in all CSI-RSs, and configure all CSI-RSs and QCL-CSI-RSs corresponding to each set of CSI-RSs.
- the QCL-CSI-RS is used to jointly estimate the channel large-scale feature parameter with the CSI-RS.
- the device shown in FIG. 5 solves the problem that the related art lacks a solution for the large-scale feature parameter estimation of the coordinated UE in the UDN, thereby avoiding the CSI-RS being used for the frequency offset and the frequency extension estimation.
- the noise impact can be directly used by the CSI-RS as a cell discovery signal.
- the channel large-scale feature parameter may include, but is not limited to, at least one of the following:
- Frequency offset parameter frequency extension parameter.
- the apparatus may further include: a sending module 104, configured to send a corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS.
- a sending module 104 configured to send a corresponding QCL-CSI-RS on some or all of the ports used by the CSI-RS.
- the sending module 104 is configured to perform a sending operation according to one of the following manners: Mode 1: The QCL-CSI-RS supports only one port by default, and the reference signal of the QCL-CSI-RS port 0 is at the CSI-RS. Transmitted on port 0. Mode 2: When the number of CSI-RS ports is greater than or equal to 2, QCL-CSI-RS supports up to 2 ports by default and indicates the number of QCL-CSI-RS ports.
- the reference signal of QCL-CSI-RS port 0 is transmitted on port 0 of CSI-RS; when the number of QCL-CSI-RS ports is 2, QCL-CSI-RS port 0
- the reference signal and the reference signal of the QCL-CSI-RS port 1 are respectively transmitted on the port 0 and the port 1 of the CSI-RS; or the reference signal of the QCL-CSI-RS port 0 and the reference signal of the QCL-CSI-RS port 1 respectively Port 0 and port on the CSI-RS Up, where N is the number of ports of the CSI-RS and N is a positive integer; mode 3: QCL-CSI-RS supports only 2 ports by default, QCL-CSI-RS port 0 reference signal and QCL-CSI-RS The reference signal of port 1 is at port 0 and port of CSI-RS respectively.
- the method is as follows:
- the network side configures the number of ports of the QCL-CSI-RS and/or the correspondence between the ports of the QCL-CSI-RS and the ports of the CSI-RS, and determines to send the QCL-CSI-RS port reference according to the corresponding relationship.
- the CSI-RS port of the signal sequence is as follows:
- the apparatus may further include: a first indication module 106 configured to indicate parameter configuration information of the QCL-CSI-RS and parameter configuration information of the CSI-RS to the terminal, where QCL-CSI-
- the RS parameter configuration information includes at least one of the following: resource configuration indication information, QCL-CSI-RS port number information, scrambling code ID information, subframe configuration information, relative subframe configuration information, mapping band indication information, and relative subframe configuration information. At least one of the following: a subframe offset or a slot offset of the QCL-CSI-RS with respect to the CSI-RS, and a period of the QCL-CSI-RS with respect to the CSI-RS.
- the foregoing apparatus may further include: a second indication module 108, configured to send configuration indication information of the QCL-CSI-RS to the terminal, where the configuration indication information carries the QCL-CSI-RS
- the port number information the port number information is used to implicitly indicate the QCL packet information in the CSI-RS, and is determined by the number of QCL packets of the CSI-RS, and the QCL packet information is used to indicate that all ports in the CSI-RS cannot be fully connected.
- the ports are grouped and the ports that satisfy the QCL characteristics are divided into the same group.
- the transmitting module 104 is further configured to transmit the reference signal on the QCL-CSI-RS port k on the port with the smallest CSI-RS port index in the kth packet, where k is a natural number.
- the configuration indication information may further carry correspondence information between each port of the QCL-CSI-RS and each port of the CSI-RS.
- the foregoing correspondence information may be one of the following:
- the QCL-CSI-RS and the CSI-RS are transmitted on different orthogonal frequency division multiplexing symbols or on different time slots.
- the time interval between transmitting the QCL-CSI-RS and transmitting the CSI-RS is less than a preset threshold.
- the foregoing apparatus may further include: a first processing module 110, configured to pre-arrange a subframe offset of the CSI-RS and the QCL-CSI-RS with the terminal, and default QCL-CSI-RS and The K ports with the smallest CSI-RS index occupy the same resource location, where the subframe offset is not 0 and K is a positive integer.
- a first processing module 110 configured to pre-arrange a subframe offset of the CSI-RS and the QCL-CSI-RS with the terminal, and default QCL-CSI-RS and The K ports with the smallest CSI-RS index occupy the same resource location, where the subframe offset is not 0 and K is a positive integer.
- the QCL-CSI-RS and the CSI-RS adopt the same sequence.
- the apparatus may further include: a second configuration module 112 configured to configure the ZP CSI-RS to enable the ZP CSI-RS to cover the RE corresponding to the QCL-CSI-RS, or by configuring The NZP CSI-RS is such that at least one of the NZP CSI-RSs covers the RE corresponding to the QCL-CSI-RS.
- a second configuration module 112 configured to configure the ZP CSI-RS to enable the ZP CSI-RS to cover the RE corresponding to the QCL-CSI-RS, or by configuring The NZP CSI-RS is such that at least one of the NZP CSI-RSs covers the RE corresponding to the QCL-CSI-RS.
- the QCL-CSI-RS is transmitted on a part of the available bandwidth, and carries the transmission band indication information of the QCL-CSI-RS in the configuration indication information.
- the apparatus may further include: a receiving module 114 configured to receive frequency offset information fed back by the terminal; and a second processing module 116 configured to perform rephasing processing of the crystal oscillator based on the frequency offset information, or Frequency offset pre-calibration is performed when the CSI-RS and/or the demodulation reference signal DMRS are transmitted.
- a receiving module 114 configured to receive frequency offset information fed back by the terminal
- a second processing module 116 configured to perform rephasing processing of the crystal oscillator based on the frequency offset information, or Frequency offset pre-calibration is performed when the CSI-RS and/or the demodulation reference signal DMRS are transmitted.
- FIG. 7 is a block diagram showing the structure of a quasi-common position determining apparatus according to an embodiment of the present invention.
- the quasi-common location determining apparatus may include: a receiving module 200 configured to receive CSI-RS information configured by the network side device and QCL-CSI-RS configuration information configured for each set of CSI-RS;
- a determining module 202 is configured to determine resource locations and reference signal sequence configuration information of the CSI-RS and the QCL-CSI-RS according to the CSI-RS information configured by the network side device and the QCL-CSI-RS configuration information corresponding to the CSI-RS.
- An estimation module 204 configured to jointly estimate a channel large scale by using a CSI-RS reference signal received at a resource location of the CSI-RS and a QCL-CSI-RS reference signal received at a resource location of the QCL-CSI-RS Feature parameter information.
- the channel large-scale feature parameter may include, but is not limited to, at least one of the following:
- the foregoing apparatus may further include: a second determining module 206, where the reference signal set as the default QCL-CSI-RS port is sent on some or all of the ports used by the CSI-RS.
- the second determining module 206 is configured to perform one of the following operations:
- the reference signal of the QCL-CSI-RS port 0 is sent on the port 0 of the CSI-RS;
- the QCL-CSI-RS supports up to 2 ports by default.
- the reference signal of QCL-CSI-RS port 0 is sent on port 0 of the CSI-RS; when the number of QCL-CSI-RS ports is 2, QCL-
- the reference signal of CSI-RS port 0 and the reference signal of QCL-CSI-RS port 1 are respectively transmitted on port 0 and port 1 of CSI-RS, or the reference signal of QCL-CSI-RS port 0 and QCL-CSI-RS.
- the reference signal of port 1 is at port 0 and port of CSI-RS respectively. Up, where N is the number of ports of the CSI-RS and N is a positive integer.
- the reference signals of the default QCL-CSI-RS port 0 and the reference signals of the QCL-CSI-RS port 1 are respectively in the CSI-RS.
- Port 0 and port 1 are transmitted, or the reference signal of QCL-CSI-RS port 0 and the reference signal of QCL-CSI-RS port 1 are respectively at port 0 and port of CSI-RS. Send on.
- the terminal determines to send the QCL-CSI-RS port reference according to the corresponding relationship.
- the CSI-RS port of the signal sequence is indicated by the network side configuration and/or the network side notifies the correspondence between each port of the QCL-CSI-RS and the CSI-RS ports.
- the receiving module 200 may include: a first acquiring unit (not shown) configured to receive configuration indication information of the QCL-CSI-RS from the network side device, where the configuration indication information carries the QCL- Port number information of the CSI-RS, the port number information is used to implicitly indicate the QCL packet information in the CSI-RS, and is determined by the number of QCL packets of the CSI-RS; the first determining unit (not shown) is set to The QCL grouping manner of the CSI-RS is determined according to the configuration indication information.
- the first determining unit is configured to perform one of the following operations:
- the number of ports of the default QCL-CSI-RS is less than or equal to two.
- the receiving module 200 may include: a second acquiring unit (not shown in the figure) configured to acquire port number information of the QCL-CSI-RS and each port of the QCL-CSI-RS and each port of the CSI-RS Corresponding relationship information; a second determining unit (not shown) configured to determine a QCL packet condition of the CSI-RS and a CSI corresponding to a reference signal of each port of the QCL-CSI-RS according to the port number information and the correspondence relationship information -RS port.
- a second acquiring unit (not shown in the figure) configured to acquire port number information of the QCL-CSI-RS and each port of the QCL-CSI-RS and each port of the CSI-RS Corresponding relationship information
- a second determining unit (not shown) configured to determine a QCL packet condition of the CSI-RS and a CSI corresponding to a reference signal of each port of the QCL-CSI-RS according to the port number information and the correspondence relationship information -RS port.
- the second determining unit is configured to perform one of the following operations:
- the CSI-RS port that satisfies the QCL characteristic in the default CSI-RS is an index consecutive CSI-RS port, where k port method of determining the CSI-RS group satisfies the QCL property to: determine QCL-CSI-RS ports k corresponding to the CSI-RS ports P k and determining QCL-CSI-RS ports k + 1 corresponding to the CSI-RS ports P k +1 , the port of the k -th CSI-RS that satisfies the QCL characteristic is P k -P k+1 -1; when the QCL-CSI-RS port k is the maximum port index of the QCL-CSI-RS, then the kth The port of the CSI-RS that satisfies the QCL characteristic is P k to N, where N is the number of ports of the CSI-RS, k is a natural number, and N is a positive
- the reference signal on the default QCL-CSI-RS port k is performed on the port with the smallest CSI-RS port index in the kth packet. send.
- the apparatus may further include: a third determining module 208, wherein the resource element RE corresponding to the QCL-CSI-RS set to be transmitted by default is covered by the zero power ZP CSI-RS.
- the first determining module 202 is configured to determine, according to a pre-agreed manner or by means of signaling, that the QCL configuration information may include, but is not limited to, at least one of the following:
- mapping band indication information
- the foregoing relative subframe configuration information may include at least one of: a subframe offset or a slot offset of the QCL-CSI-RS with respect to the CSI-RS, and a period of the QCL-CSI-RS with respect to the CSI-RS.
- the apparatus may further include: a feedback module 210, configured to: after estimating the frequency offset according to the QCL-CSI-RS reference signal and the CSI-RS reference signal, and feeding back the frequency offset estimation result to the network Side equipment.
- a feedback module 210 configured to: after estimating the frequency offset according to the QCL-CSI-RS reference signal and the CSI-RS reference signal, and feeding back the frequency offset estimation result to the network Side equipment.
- FIG. 9 is a schematic structural diagram of a system for QCL enhancement in cell virtualization according to a preferred embodiment of the present invention.
- the system may include, but is not limited to, a terminal and a base station, where the base station may include: a QCL-CSI-RS generating unit and a signaling configuration unit.
- the base station may include: a QCL-CSI-RS generating unit and a signaling configuration unit.
- a frequency offset calibration or pre-correction unit may also be included. The specific functions of the interaction between the various units are described below:
- the QCL-CSI-RS generating unit is configured to generate a QCL-CSI-RS for each set of CSI-RSs, wherein the QCL-CSI-RS is used for jointly estimating a large-scale feature parameter of the channel with the CSI-RS, and the large-scale characteristic parameter of the channel may be Including but not limited to: frequency offset parameters, frequency extension parameters.
- the QCL-CSI-RS When the QCL-CSI-RS is transmitted, it is transmitted on some or all of the same ports as the CSI-RS.
- the QCL-CSI-RS When the QCL-CSI-RS is transmitted, it is sent on some or all of the same ports as the CSI-RS, and may further include at least one of the following methods:
- the QCL-CSI-RS supports only one port by default, and the reference signal of the QCL-CSI-RS port 0 is sent on the CSI-RS port 0.
- the QCL-CSI-RS supports up to 2 ports by default, and when the number of QCL-CSI-RS ports is 1, the reference signal of the QCL-CSI-RS port 0 is sent on the CSI-RS port 0. When the number of QCL-CSI-RS ports is 2, the reference signals of ports 0 and 1 of the QCL-CSI-RS are respectively sent on ports 0 and 1 of the CSI-RS; or at port 0 of the CSI-RS, Sent on, where N is the number of ports of the CSI-RS.
- QCL-CSI-RS supports only 2 ports by default, and the reference signals of ports 0 and 1 of QCL-CSI-RS are respectively sent on ports 0 and 1 of CSI-RS; or port 0 of CSI-RS. , Sent on, where N is the number of ports of the CSI-RS.
- the base station configures the QCL-CSI-RS parameter indication information for the terminal, and the QCL-CSI-RS parameter indication information may include at least one of the following configuration information:
- the port number information may also be carried in the QCL-CSI-RS parameter indication information.
- the number of ports implicitly indicates the QCL packet information in the CSI-RS, and is determined by the QCL packet information of the CSI-RS; wherein the QCL packet information in the CSI-RS means that all the ports in the CSI-RS cannot satisfy the QCL.
- the ports are grouped so that the ports in which the QCL characteristics are met are in the same group.
- the QCL-CSI-RS configuration indication information may further include correspondence information between the QCL-CSI-RS ports and the CSI-RS ports.
- the QCL-CSI-RS When transmitting the QCL-CSI-RS, transmitting on some or all of the same ports as the CSI-RS, which may further include: a reference signal on the QCL-CSI-RS port k, a CSI-RS port index in the kth packet Send on the smallest port.
- the QCL-CSI-RS configuration indication information may further include: the correspondence between the ports of the QCL-CSI-RS and the ports of the CSI-RS is any one of the following methods:
- the QCL-CSI-RS and the CSI-RS are not at least not transmitted on the same OFDM symbol or the same time slot, and the time interval between the preferential QCL-CSI-RS and the corresponding CSI-RS is greater than or equal to the first predetermined. Threshold. The time interval between the QCL-CSI-RS and the corresponding CSI-RS is less than or equal to a second preset threshold.
- the subframe offset and/or period of the CSI-RS and the QCL-CSI-RS may be pre-agreed between the base station and the terminal, and the default QCL-CSI-RS and the K port with the smallest CSI-RS index occupy the same resource location.
- the subframe offset is not 0, and the transmission period of the QCL-CSI-RS is 1/2/4/8 times of the CSI-RS transmission period.
- the QCL-CSI-RS can use the same sequence as the corresponding CSI-RS.
- the ZP CSI-RS covers the RE corresponding to the QCL-CSI-RS.
- the base station when configuring the NZP CSI-RS, causes at least one of the NZP CSI-RSs to cover the QCL-CSI-RS.
- the QCL-CSI-RS is transmitted on a part of the bandwidth, and carries the transmission band indication information of the QCL-CSI-RS in the configuration indication information.
- the signaling configuration unit is configured to configure QCL-CSI-RS parameter information generated for each set of CSI-RSs to the terminal.
- the frequency offset calibration or pre-correction unit is responsible for re-phase locking the crystal according to the frequency offset information fed back by the terminal or performing frequency offset pre-calibration when transmitting the CSI-RS and/or the DMRS.
- the terminal may include: a signaling reception parsing unit, a parameter estimating unit, a correction, and a parameter generating unit.
- the method further includes: a parameter feedback unit.
- the signaling receiving and parsing unit is responsible for receiving CSI-RS information configured by the network side device and QCL-CSI-RS configuration information configured for each set of CSI-RS.
- the terminal may send the default QCL-CSI-RS on the same part or all ports as the CSI-RS according to the agreement with the network side device.
- the terminal When there is no configuration information of the number of QCL-CSI-RS ports and the CSI-RS port relationship, the terminal defaults to the maximum number of ports of the QCL-CSI-RS.
- the terminal default QCL-CSI-RS reference signal is sent on the CSI-RS port 0.
- the terminal When the QCL-CSI-RS supports two ports, if the number of QCL-CSI-RS ports is 1, the terminal transmits the reference signal of the QCL-CSI-RS port 0 by default on the CSI-RS port 0. If the number of QCL-CSI-RS ports is 2, the terminal defaults that the reference signals of ports 0 and 1 of the QCL-CSI-RS are respectively sent on ports 0 and 1 of the CSI-RS; or at ports 0, N of the CSI-RS. Sent on /2, where N is the number of ports of the CSI-RS.
- the terminal acquires the port number information of the QCL-CSI-RS, and the terminal determines the QCL grouping mode of the CSI-RS according to the QCL-CSI-RS port number information.
- the terminal defaults to the QCL relationship of all ports of the CSI-RS; when the number of QCL-CSI-RS ports is 2, the port defaults to all the ports of the CSI-RS.
- the terminal receives the port number information of the QCL-CSI-RS and the port correspondence information between the ports of the QCL-CSI-RS and the CSI-RS, and the terminal may use the QCL-CSI-RS port number information and the QCL-CSI-RS ports.
- the port correspondence information with the CSI-RS determines the QCL packet condition of the CSI-RS and the port of the CSI-RS corresponding to each port reference signal of the QCL-CSI-RS. specific:
- the CSI-RS of the terminal default CSI-RS satisfies the QCL-RS.
- the port is an indexed continuous CSI-RS port.
- Port method for determining the k-th group satisfies the QCL CSI-RS for: determining QCL-CSI-RS ports k corresponding CSI-RS ports P k, is determined QCL-CSI-RS ports k + 1 corresponding to the CSI-RS ports P k +1 , the port of the kth group satisfying the CSI-RS of the QCL is P k ⁇ P k+1 -1, wherein when the port k is the maximum port index of the QCL-CSI-RS, the kth group satisfies the QCL
- the port of the CSI-RS is P k to N, where N is the number of ports of the CSI-RS.
- the terminal When the port correspondence information of each port of the QCL-CSI-RS and the CSI-RS indicates the port group information of each CSI-RS that satisfies the QCL, the terminal defaults the reference signal on the QCL-CSI-RS port k.
- the k-th packet is sent on the port with the smallest CSI-RS port index.
- the RE of the terminal default transmission QCL-CSI-RS is covered by the ZP-CSI-RS; or the default QCL-CSI-RS of the terminal is covered by at least one of the configured NZP CSI-RSs.
- the terminal determines at least one of the following parameters of the QCL-CSI-RS according to a pre-agreed manner or by means of signaling resolution: a transmission period, a subframe offset, a resource configuration, and a reference signal initialization parameter.
- the parameter estimation unit is configured to perform estimation of at least one of the large-scale parameters of the frequency offset and the frequency extension by using the CSI-RS and the corresponding QCL-CSI-RS according to the received configuration information.
- the correction and parameter generation unit is responsible for performing frequency offset correction according to the frequency offset parameter estimated by the parameter estimation unit, and/or generating a filter coefficient for channel estimation according to the frequency extension parameter estimated by the parameter estimation unit.
- the feedback unit is responsible for feeding back the frequency offset parameter to the base station.
- the function of the frequency offset correction function in the terminal correction and parameter generation unit and the feedback unit feeding back the frequency offset parameter to the base station may be selected.
- the above embodiments achieve the following technical effects (it is required that the effects are achievable by some preferred embodiments): the technical solutions provided by the embodiments of the present invention can be solved.
- the CSI-RS is poorly affected by noise when used for frequency offset and frequency extension estimation. It can also solve the problem that during the cell virtualization process, when JT transmission is performed between cells, different CSI-RS ports are not.
- the CSI-RS can be directly used as the cell discovery signal, that is, the QC-CSI-RS can be configured to enable the CSI-RS to support the estimation of the frequency offset and the frequency extension in the cell discovery process;
- the QCL-CSI-RS and the CSI-RS are transmitted on the same port, it is equivalent to increasing the density of some or all of the port CSI-RS.
- the resource configuration as the QCL-CSI-RS can be flexibly selected according to the CSI-RS usage in the network.
- the DMRS channel estimation parameters may also be generated according to the delay, frequency offset, delay spread, and frequency extension obtained by different port estimation of the QCL-CSI-RS.
- modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
- the configuration, the determining method, and the device for the quasi-common location have the following beneficial effects:
- the CSI-RS can be directly used as the cell discovery signal, that is, the QCL-CSI-RS is configured on the one hand.
- the CSI-RS can support the estimation of frequency offset and frequency extension in the cell discovery process; on the other hand, since the QCL-CSI-RS and the CSI-RS are transmitted on the same port.
- the resource configuration as the QCL-CSI-RS can be flexibly selected according to the CSI-RS usage in the network.
- the DMRS channel estimation parameters may also be generated according to the delay, frequency offset, delay spread, and frequency extension obtained by different port estimation of the QCL-CSI-RS.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本发明公开了一种准共位置的配置、确定方法及装置,在上述方法中,获取当前配置的全部CSI-RS;为全部CSI-RS中的每一套CSI-RS分别配置对应的QCL-CSI-RS,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数,将全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端。根据本发明提供的技术方案,可以避免CSI-RS在用于频偏、频率扩展估计时所受到的噪声影响,可以直接利用CSI-RS作为小区发现信号使用。
Description
本发明涉及通信领域,具体而言,涉及一种准共位置的配置、确定方法及装置。
随着近年来智能移动终端等设备的大量普及,对系统的吞吐量提出了越来越高的需求。在频谱资源愈发紧张的情况下,同步部署大量小小区以获得大的小区分裂增益是一种提高系统效率的有效途径。在这种背景下,超密集网络(Ultra Dense Network,简称为UDN)的概念应运而生。
但随之而来的会引发移动性和干扰问题,为了解决UDN中的移动性和干扰问题,一种有效的途径是基于虚拟化小区(也可以称之为cloud cell),即各个小区对于用户设备(UE)是不可见的,相对于UE而言,不同的小区类似于分布式的发射天线。终端在接收信号时只需要根据网络侧配置的参考信号估计得到的信道信息进行检测,而不需要知道对应的信号来自于哪个小小区(small cell或Pico)。基于小区虚拟化的概念,可以有效地解决UDN中的移动性问题,同时网络侧可以根据干扰环境灵活的配置协同传输信号的小区,从而避免small cell之间的干扰,甚至通过联合传输以获得宏分集增益效果。
实现小区虚拟化的一种方式是基于控制面和用户面分离的思想,即控制面的信息由宏站或者特定的载波发送,而用户面的数据由小小区发送;同时为了避免终端误接入小小区,并与小小区建立连接,而影响移动性。往往在小小区中不发送主/辅同步信号、公共参考信号(Common Reference Signal,简称为CRS)、广播信号等。
基于上述的方式,可以有效缓解UDN中的移动性及干扰问题,但随之而来需要考虑的另一个问题即为终端估计下行大尺度参数(例如:时/频偏、时延扩展、频率扩展等)。由于终端无法识别不同的小小区,且小小区又不会发送公共参考信号,因而终端无法基于CRS进行时频偏估计。
在长期演进(LTE)R10中,除了上述提到的CRS外,还引入了信道状态信息参考信号(Channel State Information Reference Signal,简称为CSI-RS),但当前系统中的CSI-RS图样设计却不利于频偏估计。图1是根据相关技术的在一套CSI-RS中不同端口RE的图样示意图。如图1所示,该图中的示意了给定的一套CSI-RS中不同端
口资源元素(Resource Element,简称为RE)的图样。从图中可以看出,每套CSI-RS对应的RE是在相邻的两个正交频分复用(Orthogonal Frequency Division Multiplexing,简称为OFDM)符号上,因此,这种配置限制了频偏估计的性能(抑制噪声的能力非常差)。需要注意的是,在LTE中,图1中的CSI-RS端口0~7在协议中分别对应于端口15~22。其中图中示意的是其中一套CSI-RS的配置方式示意图,在LTE中,不同的小区可以在不同的时频资源位置上配置CSI-RS,但基本的图样是保持一致的。具体的,不同配置下的CSI-RS映射方式如下式所示:
其中,
l"=0,1
其中,在正常CP(normal CP)和扩展CP(extended CP)时可能的(k',l')取值如下表1和表2所示,其中k',l'分别代表一个时隙内每个PRB的子载波相对索引和OFDM符号相对索引。
表1为在扩展CP下,CSI-RS资源映射对应的(k',l')。如表1所示,wl″表示端口上的扩频加权值。
表1
表2为在正常CP下,CSI-RS资源映射对应的(k',l')。如表2所示,
表2
在LTE R11中,针对CSI-RS频偏估计能力差的问题,为每套CSI-RS配置了用于满足准共位置(Quasi-Co-Location,简称为QCL)关系的CRS,终端可以根据CRS估计大尺度特征参数(例如:时/频偏、时延扩展、频率扩展),并可以假定CRS上的大尺度特征参数与CSI-RS相同,其中,QCL用于表征天线端口之间的大尺度特性关系,当称两个天线端口A和B之间满足QCL关系时,是指在天线端口A上估计得到的信道大尺度特征参数同样适合于天线端口B。因此,当在R11中,当为CSI-RS配置了QCL的CRS时,则意味着所述的CSI-RS端口与所述的CRS端口到终端的信道具有相同的大尺度特性。
然而在UDN场景中,由于small cell并不发送cell specific的CRS,因而无法通过为CSI-RS配置满足QCL关系的CRS来实现。
综上所述,相关技术中缺乏一种UDN中协作UE进行大尺度特征参数估计的解决方案。
发明内容
本发明实施例提供了一种准共位置的配置、确定方法及装置,以至少解决相关技术中缺乏一种UDN中协作UE进行大尺度特征参数估计的解决方案的问题。
根据本发明实施例的一个方面,提供了一种准共位置的配置方法。
根据本发明实施例的准共位置的配置方法包括:获取当前配置的全部信道状态信息参考信号CSI-RS;为全部CSI-RS中的每一套CSI-RS分别配置对应的准共位置信道状态信息参考信号QCL-CSI-RS,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数;将全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端。
优选地,信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
优选地,在为CSI-RS配置对应的QCL-CSI-RS之后,还包括:在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS。
优选地,在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS包括以下之一:QCL-CSI-RS默认只支持1个端口,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;QCL-CSI-RS默认最大支持2个端口,当QCL-CSI-RS端口数目为1时,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS端口数目为2时,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,表示对x向上取整;QCL-CSI-RS默认只支持2个端口,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,表示对x向上取整。
优选地,在为CSI-RS配置对应的QCL-CSI-RS之后,还包括:向终端指示QCL-CSI-RS的参数配置信息,其中,参数配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码标识(ID)信息、子帧配置信息、相对子
帧配置信息、映射频带指示信息;相对子帧配置信息包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,在为CSI-RS配置对应的QCL-CSI-RS之后,还包括:向终端发送QCL-CSI-RS的配置指示信息,其中,配置指示信息中携带有QCL-CSI-RS的端口数目信息,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定,QCL分组信息用于表示当CSI-RS中的所有端口之间无法全部满足QCL特性时,对端口进行分组,将满足QCL特性的端口划分至相同组别。
优选地,在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS包括:将QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送,其中,k为自然数。
优选地,配置指示信息中还携带有QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息。
优选地,对应关系信息为以下之一:QCL-CSI-RS的每个端口对应的CSI-RS端口;QCL-CSI-RS的每个端口对应的CSI-RS端口分组。
优选地,QCL-CSI-RS与CSI-RS在不同的正交频分复用符号上或者在不同的时隙上或者在与CSI-RS时间间隔大于第一预定阈值的子帧或时隙上发送。
优选地,发送QCL-CSI-RS与发送CSI-RS的时间间隔小于第二预设阈值。
优选地,与终端预先约定CSI-RS与QCL-CSI-RS的子帧偏置,并默认QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,子帧偏置不为0且K为正整数。
优选地,QCL-CSI-RS的发送周期为CSI-RS的发送周期的X倍,其中,X=2n,n为自然数。
优选地,QCL-CSI-RS与CSI-RS采用相同的序列。
优选地,上述方法还包括:通过配置零功率ZP CSI-RS以使ZP CSI-RS覆盖与QCL-CSI-RS对应的资源元素RE,或者,通过配置非零功率NZP CSI-RS以使NZP CSI-RS中的至少一套覆盖与QCL-CSI-RS对应的RE。
优选地,QCL-CSI-RS在部分可用带宽上发送,并在配置指示信息中携带QCL-CSI-RS的传输频带指示信息。
优选地,在为CSI-RS配置对应的QCL-CSI-RS之后,还包括:接收终端反馈的频偏信息;基于频偏信息进行晶振的重新锁相处理,或者,在CSI-RS和/或DMRS发送时进行频偏预校准。
根据本发明实施例的另一方面,提供了一种准共位置的确定方法。
根据本发明实施例的准共位置的确定方法包括:接收网络侧设备配置的CSI-RS信息以及为每套CSI-RS配置的QCL-CSI-RS配置信息;根据CSI-RS信息以及QCL-CSI-RS配置信息确定CSI-RS和QCL-CSI-RS的资源位置;利用在CSI-RS的资源位置上接收到的CSI-RS参考信号和在QCL-CSI-RS的资源位置上接收到的QCL-CSI-RS参考信号联合估计信道大尺度特征参数。
优选地,信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
优选地,在进行联合估计信道大尺度特征参数之前,还包括:默认QCL-CSI-RS端口的参考信号在CSI-RS使用的部分或全部端口上进行发送。
优选地,默认QCL-CSI-RS在CSI-RS所使用的部分或全部端口上进行发送包括以下之一:当QCL-CSI-RS的端口数目为1时,默认QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS的端口数目为2时,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0和端口上发送,其中,N为CSI-RS的端口数目且N为正整数。
优选地,接收CSI-RS信息以及QCL-CSI-RS配置信息包括:从QCL-CSI-RS配置指示信息中获取QCL-CSI-RS的端口数目信息,其中,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定;根据配置指示信息确定CSI-RS的QCL分组方式。
优选地,根据配置指示信息确定CSI-RS的QCL分组方式包括以下之一:当QCL-CSI-RS的端口数目为1时,默认CSI-RS的所有端口均满足QCL关系;当QCL-CSI-RS的端口数目为2时,默认CSI-RS的所有端口中的端口组均满足QCL关系,端口组均满足QCL关系,且两个端口组之间不满足QCL关系,同时默认QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送,QCL-CSI-RS端口1的参考信号在CSI-RS的端口上发送,其中,N为正整数。
优选地,默认QCL-CSI-RS的端口数目小于或等于2。
优选地,接收CSI-RS信息以及QCL-CSI-RS配置信息包括:从QCL-CSI-RS配置指示信息中获取QCL-CSI-RS的端口数目信息以及QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息;根据端口数目信息和对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS的各个端口的参考信号发送所对应的CSI-RS的端口。
优选地,根据端口数目信息和对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS的各个端口的参考信号发送所对应的CSI-RS的端口包括以下之一:当对应关系信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,默认CSI-RS中满足QCL特性的CSI-RS端口为索引连续的CSI-RS端口,其中,第k组满足QCL特性的CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k所对应的CSI-RS端口Pk以及确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足QCL特性的CSI-RS的端口为Pk~Pk+1-1;当QCL-CSI-RS端口k为QCL-CSI-RS的最大端口索引时,则第k组满足QCL特性的CSI-RS的端口为Pk~N,N为CSI-RS的端口数目,k为自然数,N为正整数;当对应关系信息指示的是每个满足QCL特性的CSI-RS的端口分组信息时,默认QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送。
优选地,上述方法还包括:默认传输的与QCL-CSI-RS对应的资源元素RE被零功率(ZP)CSI-RS所覆盖。
优选地,按照预先约定的方式或者通过信令解析的方式确定QCL-CSI-RS配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;相对子帧配置信息包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,在联合估计大尺度特征参数信息之后,还包括:在根据QCL-CSI-RS参考信号与CSI-RS参考信号联合估计频偏之后,将频偏估计结果反馈至网络侧设备。
根据本发明实施例的一个方面,提供了一种准共位置的配置装置。
根据本发明实施例的准共位置的配置装置包括:获取模块,设置为获取当前配置的全部CSI-RS;第一配置模块,设置为为全部CSI-RS中的每一套CSI-RS分别配置对应的QCL-CSI-RS,并将全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数。
优选地,信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
优选地,上述装置还包括:发送模块,设置为在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS。
优选地,发送模块,设置为按照以下方式之一执行发送操作:QCL-CSI-RS默认只支持1个端口,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;QCL-CSI-RS默认最大支持2个端口,当QCL-CSI-RS端口数目为1时,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS端口数目为2时,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,表示对x向上取整;QCL-CSI-RS默认只支持2个端口,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,表示对x向上取整。
优选地,上述装置还包括:第一指示模块,设置为向终端指示QCL-CSI-RS的参数配置信息,其中,参数配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;相对子帧配置信息包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,上述装置还包括:第二指示模块,设置为向终端发送QCL-CSI-RS的配置指示信息,其中,配置指示信息中携带有QCL-CSI-RS的端口数目信息,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定,QCL分组信息用于表示当CSI-RS中的所有端口之间无法全部满足QCL特性时,对端口进行分组,将满足QCL特性的端口划分至相同组别。
优选地,发送模块,还设置为将QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送,其中,k为自然数。
优选地,配置指示信息中还携带有QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息。
优选地,对应关系信息为以下之一:QCL-CSI-RS的每个端口对应的CSI-RS端口;QCL-CSI-RS的每个端口对应的CSI-RS端口分组。
优选地,QCL-CSI-RS与CSI-RS在不同的正交频分复用符号上或者在不同的时隙上或者在与CSI-RS时间间隔大于第一预定阈值的子帧或时隙上发送。
优选地,发送QCL-CSI-RS与发送CSI-RS的时间间隔小于第二预设阈值。
优选地,上述装置还包括:第一处理模块,设置为与终端预先约定CSI-RS与QCL-CSI-RS的子帧偏置,并默认QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,子帧偏置不为0且K为正整数。
优选地,QCL-CSI-RS的发送周期为CSI-RS的发送周期的X倍,其中,X=2n,n为自然数。
优选地,QCL-CSI-RS与CSI-RS采用相同的序列。
优选地,上述装置还包括:第二配置模块,设置为通过配置零功率(ZP)CSI-RS以使ZP CSI-RS覆盖与QCL-CSI-RS对应的资源元素RE,或者,通过配置非零功率(NZP)CSI-RS以使NZP CSI-RS中的至少一套覆盖与QCL-CSI-RS对应的RE。
优选地,QCL-CSI-RS在部分可用带宽上发送,并在配置指示信息中携带QCL-CSI-RS的传输频带指示信息。
优选地,上述装置还包括:接收模块,设置为接收终端反馈的频偏信息;第二处理模块,设置为基于频偏信息进行晶振的重新锁相处理,或者,在CSI-RS和/或DMRS发送时进行频偏预校准。
根据本发明实施例的另一方面,提供了一种准共位置的确定装置。
根据本发明实施例的准共位置的确定装置包括:接收模块,设置为接收网络侧设备配置的CSI-RS信息以及为每套CSI-RS配置的QCL-CSI-RS配置信息;第一确定模块,设置为根据CSI-RS信息以及QCL-CSI-RS配置信息确定CSI-RS和QCL-CSI-RS的资源位置;估计模块,设置为利用在CSI-RS的资源位置上接收到的CSI-RS参考信号和在QCL-CSI-RS的资源位置上接收到的QCL-CSI-RS参考信号联合估计信道大尺度特征参数信息。
优选地,信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
优选地,上述装置还包括:第二确定模块,设置为默认QCL-CSI-RS端口的参考信号在CSI-RS所使用的部分或全部端口上进行发送。
优选地,第二确定模块,设置为执行以下操作之一:当QCL-CSI-RS的端口数目为1时,默认QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS的端口数目为2时,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0和端口上发送,其中,N为CSI-RS的端口数目且N为正整数。
优选地,接收模块包括:第一获取单元,设置为从QCL-CSI-RS配置指示信息中获取QCL-CSI-RS的端口数目信息,其中,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定;第一确定单元,设置为根据配置指示信息确定CSI-RS的QCL分组方式。
优选地,第三确定模块,设置为执行以下操作之一:当QCL-CSI-RS的端口数目为1时,默认CSI-RS的所有端口均满足QCL关系;当QCL-CSI-RS的端口数目为2时,默认CSI-RS的所有端口中的端口组均满足QCL关系,端口组均满足QCL关系,且两个端口组之间不满足QCL关系,同时默认QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送,QCL-CSI-RS端口1的参考信号在CSI-RS的端口上发送,其中,N为正整数。
优选地,默认QCL-CSI-RS的端口数目小于或等于2。
优选地,接收模块包括:第二获取单元,设置为获取QCL-CSI-RS的端口数目信息以及QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息;第二确定单元,设置为根据端口数目信息和对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS的各个端口的参考信号所对应的CSI-RS的端口。
优选地,第四确定模块,设置为执行以下操作之一:当对应关系信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,默认CSI-RS中满足QCL特性的CSI-RS端口为索引连续的CSI-RS端口,其中,第k组满足QCL特性的CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k所对应的CSI-RS端口Pk以及确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足QCL特性的CSI-RS的端口为Pk~Pk+1-1;当QCL-CSI-RS端口k为QCL-CSI-RS的最大端口索引时,则第k组满足QCL特性的CSI-RS的端口为Pk~N,N为CSI-RS的端口数目,k为自然数,N为正整数;当对应关系信息指示的是每个满足QCL特性的CSI-RS的端口分组信息
时,默认QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送。
优选地,上述装置还包括:第五确定模块,设置为默认传输的与QCL-CSI-RS对应的资源元素RE被ZP CSI-RS所覆盖。
优选地,第一确定模块,设置为按照预先约定的方式或者通过信令解析的方式确定QCL-CSI-RS配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;相对子帧配置信息包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,上述装置还包括:反馈模块,设置为在根据QCL-CSI-RS参考信号与CSI-RS参考信号联合估计频偏之后,将频偏估计结果反馈至网络侧设备。
通过本发明实施例,采用获取当前配置的全部CSI-RS;为全部CSI-RS中的每一套CSI-RS分别配置对应的QCL-CSI-RS,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数;将全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端,由此解决了相关技术中缺乏一种UDN中协作UE进行大尺度特征参数估计的解决方案的问题,进而可以避免CSI-RS在用于频偏、频率扩展估计时所受到的噪声影响,可以直接利用CSI-RS作为小区发现信号使用。
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1是根据相关技术的在一套CSI-RS中不同端口RE的图样示意图;
图2是根据本发明实施例的准共位置的配置方法的流程图;
图3是根据本发明实施例的准共位置的确定方法的流程图;
图4是根据本发明优选实施例的进行QCL-CSI-RS配置的示意图;
图5是根据本发明实施例的准共位置的配置装置的结构框图;
图6是根据本发明优选实施例的准共位置的配置装置的结构框图;
图7是根据本发明实施例的准共位置的确定装置的结构框图;
图8是根据本发明优选实施例的准共位置的确定装置的结构框图;
图9是根据本发明优选实施例的一种小区虚拟化中用于QCL增强的系统的结构示意图。
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
图2是根据本发明实施例的准共位置的配置方法的流程图。如图2所示,该方法可以包括以下处理步骤:
步骤S202:获取当前配置的全部CSI-RS;
步骤S204:为全部CSI-RS中的每一套CSI-RS分别配置对应的QCL-CSI-RS,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数。
步骤S206:将全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端。
相关技术中缺乏一种UDN中协作UE进行大尺度特征参数估计的解决方案。采用如图2所示的方法,为了解决UDN中移动性问题,在基于小区虚拟化的思想考虑了下行大尺度参数的估计问题,尤其是频偏及频率扩展参数的估计问题。通过为每套CSI-RS配置配对的QCL-CSI-RS信息,使得终端可以根据CSI-RS和QCL-CSI-RS联合估计下行大尺度参数信息,尤其是下行大尺度参数中的频偏及频率扩展参数。
需要说明的是,上述QCL-CSI-RS也可以称为联合参数估计CSI-RS、参考CSI-RS以及其他等效的名称,其并不构成对本发明的不当限制。
在优选实施过程中,上述信道大尺度特征参数可以包括但不限于以下至少之一:频偏参数、频率扩展参数。
优选地,在步骤S204,为CSI-RS配置对应的QCL-CSI-RS之后,还可以包括以下操作:
步骤S1:在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS。
优选地,在步骤S1中,在CSI-RS所使用的至少部分或全部端口上发送对应的QCL-CSI-RS可以包括以下方式至少之一:
方式一、QCL-CSI-RS默认只支持1个端口,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送。
方式二、QCL-CSI-RS默认最大支持2个端口,当QCL-CSI-RS端口数目为1时,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送。
当QCL-CSI-RS端口数目为2的情况下,QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者QCL-CSI-RS端口0和QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,优选的N为偶数,且N大于等于2,表示对x向上取整。
方式三:当CSI-RS的端口数目大于等于2时,QCL-CSI-RS默认为2个端口,且默认QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者QCL-CSI-RS端口0和QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,优选的N为偶数,且N大于等于2,表示向上取整。
方式四:网络侧配置QCL-CSI-RS的端口数目信息和/或QCL-CSI-RS各端口的参考信号发送与CSI-RS各端口的对应关系,根据对应关系确定发送QCL-CSI-RS端口参考信号序列的CSI-RS端口。
优选地,在步骤S204,为CSI-RS配置对应的QCL-CSI-RS之后,还可以包括以下步骤:
步骤S2:向终端指示QCL-CSI-RS的参数配置信息,其中,参数配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码标识ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;相对子帧配置信息包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,在步骤S204,为CSI-RS配置对应的QCL-CSI-RS之后,还可以包括以下操作:
步骤S3:向终端发送QCL-CSI-RS的配置指示信息,其中,配置指示信息中携带有QCL-CSI-RS的端口数目信息,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定,QCL分组信息用于表示当CSI-RS中的所有端口之间无法全部满足QCL特性时,对端口进行分组,将满足QCL特性的端口划分至相同组别。
优选地,在步骤S1中,在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS还可以包括以下方式:将QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送,其中,k为自然数。
优选地,上述配置指示信息中还可以携带有QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息。
优选地,上述对应关系信息可以为以下之一:
(1)QCL-CSI-RS的每个端口对应的CSI-RS端口;
(2)QCL-CSI-RS的每个端口对应的CSI-RS端口分组。
优选地,QCL-CSI-RS与CSI-RS在不同的正交频分复用符号上或者在不同的时隙上发送或者大于第一预定阈值。
优选地,发送QCL-CSI-RS与发送CSI-RS的时间间隔小于第二预设阈值。
优选地,与终端预先约定CSI-RS与QCL-CSI-RS的子帧偏置,并默认QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,子帧偏置不为0且K为正整数。
优选地,QCL-CSI-RS的发送周期为CSI-RS的发送周期的X倍,其中,X=2n,n为自然数。例如:
QCL-CSI-RS的发送周期为CSI-RS的发送周期的1倍;或者,
QCL-CSI-RS的发送周期为CSI-RS的发送周期的2倍;或者,
QCL-CSI-RS的发送周期为CSI-RS的发送周期的4倍;或者,
QCL-CSI-RS的发送周期为CSI-RS的发送周期的8倍。
在优选实施过程中,QCL-CSI-RS与CSI-RS采用相同的序列。
优选地,上述方法还可以包括以下操作:
步骤S4:通过配置ZP CSI-RS以使ZP CSI-RS覆盖与QCL-CSI-RS对应的RE,或者,通过配置NZP CSI-RS以使NZP CSI-RS中的至少一套覆盖与QCL-CSI-RS对应的RE。
优选地,QCL-CSI-RS可以在部分可用带宽上进行发送,并在配置指示信息中携带QCL-CSI-RS的传输频带指示信息。
优选地,在步骤S204,为CSI-RS配置对应的QCL-CSI-RS之后,还可以包括以下步骤:
步骤S5:接收终端反馈的频偏信息;
步骤S6:基于频偏信息进行晶振的重新锁相处理,或者,在CSI-RS和/或解调参考信号DMRS发送时进行频偏预校准。
图3是根据本发明实施例的准共位置的确定方法的流程图。如图3所示,该方法可以包括以下处理步骤:
步骤S302:接收网络侧设备配置的CSI-RS信息以及为每套CSI-RS配置的QCL-CSI-RS配置信息;
步骤S304:根据CSI-RS信息以及QCL-CSI-RS配置信息确定CSI-RS和QCL-CSI-RS的资源位置;
步骤S306:利用在CSI-RS的资源位置上接收到的CSI-RS参考信号和在QCL-CSI-RS的资源位置上接收到的QCL-CSI-RS参考信号联合估计大尺度特征参数信息。
在优选实施过程中,上述信道大尺度特征参数可以包括但不限于以下至少之一:
频偏参数、频率扩展参数。
优选地,在步骤S302,确定CSI-RS和QCL-CSI-RS的资源位置之前,还可以包括以下操作:
步骤S7:默认QCL-CSI-RS在CSI-RS所使用的部分或全部端口上进行发送。
优选地,在步骤S7中,默认QCL-CSI-RS在CSI-RS所使用的部分或全部端口上进行发送可以包括以下方式之一:
方式一、在QCL-CSI-RS默认只支持1个端口的情况下,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送。
方式二、在默认QCL-CSI-RS最大支持2个端口情况下,当QCL-CSI-RS端口数目为1的情况下,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS端口数目为2的情况下,默认QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者默认QCL-CSI-RS端口0和QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,优选的N为偶数,且N大于等于2,表示向上取整。
方式三,在默认QCL-CSI-RS为2个端口情况下,默认QCL-CSI-RS端口0和端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者默认QCL-CSI-RS端口0和QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数,优选的N为偶数,且N大于等于2,表示向上取整。
方式四:终端接收网络侧配置QCL-CSI-RS的端口数目信息和/或QCL-CSI-RS各端口的参考信号发送与CSI-RS各端口的对应关系,并根据QCL-CSI-RS端口数目信息和/或与CSI-RS端口对应关系信息,确定QCL-CSI-RS发送参考信号对应的CSI-RS端口。
其中,当QCL-CSI-RS端口数目大于等于2时,终端默认CSI-RS的端口数目必须不能小于QCL-CSI-RS的端口数目。
优选地,在步骤S302,接收CSI-RS信息以及QCL-CSI-RS配置信息可以包括以下步骤:
步骤S8:从QCL-CSI-RS的配置指示信息获取QCL-CSI-RS的端口数目信息,其中,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定;
步骤S9:根据配置指示信息确定CSI-RS的QCL分组方式。
优选地,在步骤S9中,根据配置指示信息确定CSI-RS的QCL分组方式可以包括以下方式之一:
方式一、当QCL-CSI-RS的端口数目为1时,默认CSI-RS的所有端口均满足QCL关系;
方式二、当QCL-CSI-RS的端口数目为2时,默认CSI-RS的所有端口中的端口组0~N/2-1均满足QCL关系,端口组N/2~N-1均满足QCL关系,且两个端口组之间不满足QCL关系,同时默认QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送,QCL-CSI-RS端口1的参考信号在CSI-RS的端口N/2上发送,其中,N为正整数。
优选地,默认QCL-CSI-RS的端口数目小于或等于2。
优选地,在步骤S302,接收CSI-RS信息以及QCL-CSI-RS配置信息可以包括以下操作:
步骤S10:从QCL-CSI-RS配置指示信息中获取QCL-CSI-RS的端口数目信息以及QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息;
步骤S11:根据端口数目信息和对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS的各个端口的参考信号发送所对应的CSI-RS的端口。
优选地,在步骤S11中,根据端口数目信息和对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS的各个端口的参考信号所对应的CSI-RS的端口可以包括以下方式之一:
方式一、当对应关系信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,默认CSI-RS中满足QCL特性的CSI-RS端口为索引连续的CSI-RS端口,其中,第k组满足QCL特性的CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k所对应的CSI-RS端口Pk以及确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足QCL特性的CSI-RS的端口为Pk~Pk+1-1;当QCL-CSI-RS端口k为QCL-CSI-RS的最大端口索引时,则第k组满足QCL特性的CSI-RS的端口为Pk~N,N为CSI-RS的端口数目,k为自然数,N为正整数。
方式二、当对应关系信息指示的是每个满足QCL特性的CSI-RS的端口分组信息时,默认QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送。
优选地,上述方法还可以包括以下步骤:
步骤S12:默认传输的与QCL-CSI-RS对应的资源元素RE被零功率ZP CSI-RS所覆盖。
优选地,在步骤S302中,可以按照预先约定的方式或者通过信令解析的方式确定QCL配置信息包括以下至少之一:
(1)资源配置指示信息;
(2)QCL-CSI-RS端口数目信息;
(3)扰码标识ID信息;
(4)子帧配置信息;
(5)相对子帧配置信息;
(6)映射频带指示信息;
上述相对子帧配置信息可以包括但不限于以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,在步骤S304,联合估计大尺度特征参数信息之后,还可以包括以下操作:
步骤S13:在根据QCL-CSI-RS参考信号与CSI-RS参考信号联合估计频偏之后,将频偏估计结果反馈至网络侧设备。
下面将结合优选实施例一至优选实施例八对上述优选实施过程作进一步的描述。
优选实施例一
为了能够使得终端充分利用CSI-RS有效地进行信道大尺度特征参数的估计,在该优选实施例中提供了为每套CSI-RS配置QCL-CSI-RS的方法。基于该方法,网络侧设备为每一套配置的CSI-RS,配置对应的QCL-CSI-RS,并将QCL-CSI-RS的相关信息配置给终端。
网络侧设备在为CSI-RS配置QCL-CSI-RS时,在一种优选实施方式下,可以参考周围小区的CSI-RS使用情况来确定QCL-CSI-RS的资源位置、子帧/时隙位置以及周期信息。例如:图4是根据本发明优选实施例的进行QCL-CSI-RS配置的示意图。如
图4所示,目标小区CSI-RS对应的资源位置为所示意的RE,邻小区#1和邻小区#2的CSI-RS配置分别为和所对应的位置,则此时可以将QCL-CSI-RS配置在与邻小区#1、邻小区#2不发生冲突的位置上,如图所示的位置。而在某些应用场景下,例如在UDN中,目标小区可能存在多个邻小区,此时也可以根据邻小区的CSI-RS使用情况将QCL-CSI-RS配置到其他的子帧上;或者当Macro与small cell间CSI-RS端口数目不同时,或者当small cell之间CSI-RS端口数目不同时,可能导致CSI-RS的重用因子不对齐问题,此时可以选择难以被直接用作NZP CSI-RS配置的资源作为QCL-CSI-RS配置。
但需要注意的是,QCL-CSI-RS的位置需要满足但不限于下述条件至少之一:
条件一、QCL-CSI-RS与CSI-RS至少不在相同的OFDM符号上或者相同的时隙上发送,或者是QCL-CSI-RS与对应的CSI-RS之间的时间间隔大于或等于第一预设阈值。这样做的好处在于:可以更好地抑制噪声的影响。
条件二、QCL-CSI-RS与对应的CSI-RS之间的时间间隔小于或等于第二预设阈值。这样做的好处在于:能够支持更大范围的频偏估计。
在另外一种优选实施方式下,网络侧设备在配置QCL-CSI-RS时,还可以根据终端的速度或者潜在的频偏范围估计来确定QCL-CSI-RS的相对位置关系。例如:当终端移动速度较大和/或认为当前收发双发存在较大频偏时,那么网络侧设备在配置QCL-CSI-RS时,应当尽量将QCL-CSI-RS配置在与CSI-RS相同的子帧或相近的子帧上;而当终端移动速度较小和/或认为当前收发双发存在较小频偏时,网络侧设备在配置QCL-CSI-RS时,应当尽量将QCL-CSI-RS配置在与CSI-RS不同子帧或者距离较远的子帧上;
其中,网络侧设备在发送QCL-CSI-RS时,可以在与CSI-RS相同的部分或全部端口上发送,并可以通过预定的方式或者信令的方式,指示终端发送QCL-CSI-RS所使用的CSI-RS端口。
为了能够使得终端确定QCL-CSI-RS的具体配置信息,网络侧设备为终端配置的QCL-CSI-RS应当包括以下信息至少之一:
(1)资源配置指示信息;
(2)QCL-CSI-RS端口数目信息;
(3)扰码ID信息;
(4)子帧配置信息;
(5)相对子帧配置信息;
其中,相对子帧配置信息应当至少包括QCL-CSI-RS的相对于CSI-RS的下述配置信息至少之一:相对于CSI-RS的子帧偏置或时隙偏置、相对于CSI-RS的周期。优选的,QCL-CSI-RS的周期大于或等于CSI-RS的周期,其相对周期倍数关系取值优选为1/2/4/8/16/32中的一个或多个。
网络侧设备将每套CSI-RS对应的QCL-CSI-RS的配置信息配置给终端。然后,终端可以根据接收到的CSI-RS以及CSI-RS对应的QCL-CSI-RS信息联合进行至少频偏、频率扩展的信道大尺度特征参数估计。
基于上述优选实施方式,终端可以根据CSI-RS及其对应的QCL-CSI-RS进行信道大尺度参数的估计,从而解决了现有CSI-RS图样设计在用于频偏、频率扩展估计时受噪声影响大的问题。同时,网络侧设备可以根据周围小区的CSI-RS配置以及潜在的频偏情况确定QCL-CSI-RS的资源位置、时隙或子帧配置、周期配置等参数,从而使得QCL-CSI-RS的配置尽可能地避免与周围其他小区的CSI-RS配置的碰撞,以此来减少对邻小区CSI-RS的干扰。
优选实施例二
在上述优选实施例一的方式下,相关QCL-CSI-RS的参数是通过配置的方式通知给终端的,当然也可以通过网络侧设备与终端采用预先约定的方式进行部分参数的配置。
在该优选实施例中,在一种优选实施方式下,网络侧设备和/或终端默认QCL-CSI-RS各端口对应的参考信号序列与CSI-RS各端口对应的参考信号序列基于相同的扰码ID产生。基于此种方式,在为终端配置QCL-CSI-RS参数时,可以节约用于配置QCL-CSI-RS参考信号序列扰码ID的信令开销。
在另一优选实施方式下,网络侧设备与终端可以默认QCL-CSI-RS仅支持1个端口,并默认在CSI-RS的端口0(CSI-RS的第一个端口,在LTE中对应于端口15)发送QCL-CSI-RS的参考信号序列。终端可以根据QCL-CSI-RS映射对应的RE和CSI-RS
端口0映射对应的RE联合估计至少频偏、频率扩展信道大尺度特征参数。此时,终端默认CSI-RS中的所有端口均满足QCL特性。
或者,网络侧设备与终端可以默认QCL-RS最大支持2个端口,并在配置信息中携带端口数目信息。当QCL-CSI-RS端口数目为1时,默认QCL-CSI-RS的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS端口数目为2时,默认QCL-CSI-RS的端口0和端口1的参考信号分别在CSI-RS的端口0和端口1上发送,或者在CSI-RS的端口0,上发送,其中,N为CSI-RS的端口数目且N为正整数,优选的N为偶数,且N大于等于2,表示向上取整。。此时,终端可以默认CSI-RS中的所有端口均满足QCL特性;在QCL-CSI-RS端口数目为2时,还可以通过将两个端口上估计的特性进行平均计算来提高估计精度。
或者,网络侧设备与终端可以固定默认QCL-RS为2个端口,并默认QCL-CSI-RS的端口0和端口1的参考信号分别在CSI-RS的端口0和端口1上发送,或者在CSI-RS的端口0,上发送,其中,N为CSI-RS的端口数目且N为正整数,优选的N为偶数,且N大于等于2,表示向上取整。
在另一优选实施方式中,基站与终端之间可以预先约定CSI-RS和对应的QCL-CSI-RS的子帧位置关系,并默认QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,子帧位置关系可以包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期倍数关系。优选的,QCL-CSI-RS的周期大于或等于CSI-RS的周期。且在优选方式下,CSI-RS和对应的QCL-CSI-RS至少不位于同一时隙上,其中,K表示QCL-CSI-RS的端口数目,在默认情况下,K的取值为1。
在该优选实施例中,网络侧设备可以降低QCL-CSI-RS相关参数配置信令的开销。
优选实施例三
在该优选实施例中,当网络侧设备已经为终端配置了QCL-CSI-RS后,网络侧设备在进行数据映射时,需要避开QCL-CSI-RS所占用的RE。为了避免终端在数据资源解映射时处理错误或者避免基于多个信令确定数据资源解映射所带来的复杂度,在一种优选实施方式下,网络侧设备可以通过配置ZP CSI-RS(zero power CSI-RS),使得
ZP CSI-RS覆盖QCL-CSI-RS对应的RE。同时终端默认传输QCL-CSI-RS的RE被ZP-CSI-RS所覆盖。而不需要再基于QCL-CSI-RS信息重复考虑资源解映射问题。
在另一优选实施方式下,网络侧设备配置ZP CSI-RS(zero power CSI-RS),ZP CSI-RS不覆盖QCL-CSI-RS,而是在配置NZP CSI-RS时,使得其中一套NZP CSI-RS(non zero power CSI-RS)包含QCL-CSI-RS对应的RE。终端在解数据映射时,可以根据NZP CSI-RS进行解数据映射的速率匹配考虑,而不需要再基于QCL-CSI-RS信息重复考虑资源解映射问题。
在另一优选实施方式下,网络侧设备配置ZP CSI-RS和NZP CSI-RS时,均无需考虑对QCL-CSI-RS的覆盖。终端在接收到CSI-RS对应的QCL-CSI-RS配置信息号之后,单独针对QCL-CSI-RS额外考虑对解数据映射的速率匹配。
优选实施例四
在该优选实施例中,为了能够降低QCL-CSI-RS的配置对重用因子的影响,同时也能够降低QCL-CSI-RS配置带来的开销问题,可以允许QCL-CSI-RS在部分带宽上发送,同时在QCL-CSI-RS的配置指示信息中携带QCL-CSI-RS的传输频带指示信息。
优选实施例五
考虑到在UDN中基于小区虚拟化配置时,由于不同的small cell(或Pico,或传输节点(transmission point,简称为TP))对与终端透明,网络侧设备可以灵活地选择一个或多个small cell联合为终端进行数据的传输。此时,每套CSI-RS中的不同CSI-RS端口在不同的small cell上传输。因此,同一套CSI-RS的不同端口不再都满足QCL关系。
在该优选实施例中,要求在配置CSI-RS对应的QCL-CSI-RS时,携带QCL-CSI-RS端口数目信息,并通过QCL-CSI-RS端口数目隐式的指示CSI-RS的所有端口是否都满足QCL关系。
当QCL-CSI-RS端口数目为1时,终端默认CSI-RS的所有端口都满足QCL关系。而当QCL-CSI-RS端口数目大于1时,终端则不能默认CSI-RS的所有端口满足QCL关系。
在该优选实施例中,网络侧设备与终端默认QCL-CSI-RS端口数目最大为2,当QCL-CSI-RS端口数目为1时,终端默认CSI-RS的所有端口都满足QCL关系。而当QCL-CSI-RS端口数目为2时,则默认QCL-CSI-RS的端口0和1的参考信号分别在CSI-RS的端口0和上发送,其中,N为CSI-RS的端口数目。
基于该优选实施例,可以支持网络侧设备基于2个small cell联合为终端发送时,基于CSI-RS和QCL-CSI-RS估计所对应的信道大尺度参数中的至少频偏、频率扩展参数,从而提高联合传输情况下的信道估计和检测性能。
优选实施例六
在上述优选实施例五中,最大仅支持基于2个small cell联合为终端发送时,基于CSI-RS和QCL-CSI-RS估计所对应的信道大尺度参数中的至少频偏、频率扩展参数。
而在该优选实施例中,QCL-CSI-RS配置指示信息中携带有端口数目信息,且端口数目隐含指示CSI-RS中QCL分组信息,并由CSI-RS的QCL分组数决定,其中,CSI-RS中的QCL分组信息是指当CSI-RS中的所有端口之间无法全部满足QCL特性时,则可以对端口进行分组,使其中满足QCL特性的端口位于同一组。
在该优选实施例中,可以支持多个QCL-CSI-RS端口并在QCL-CSI-RS配置指示信息中包括QCL-CSI-RS各端口与CSI-RS的端口对应关系信息,其中,此处的QCL-CSI-RS各端口与CSI-RS的端口对应关系表示的是QCL-CSI-RS端口中的每个端口对应的CSI-RS端口。
为了能够更加清楚地描述该优选实施例,下面将举例进行说明:
假设CSI-RS端口数目为8,且QCL-CSI-RS配置了2个端口,则意味着CSI-RS中有两组端口满足QCL关系。在进行QCL-CSI-RS配置指示时,指示QCL-CSI-RS的各个端口分别在CSI-RS的哪个端口进行发送。如果QCL-CSI-RS各端口与CSI-RS端口对应关系为:QCL-CSI-RS端口0对应于CSI-RS端口0,QCL-CSI-RS端口1对应于CSI-RS端口4,则表示CSI-RS端口0~3满足QCL关系,CSI-RS端口4~7满足
QCL关系;且两组之间不满足QCL关系,以及终端默认QCL-CSI-RS端口0的参考信号在CSI-RS端口0发送;QCL-CSI-RS端口1在CSI-RS端口4上发送。
如果QCL-CSI-RS配置了3个端口,则意味着CSI-RS中有3组端口满足QCL关系,在进行QCL-CSI-RS配置指示时,如果指示的QCL-CSI-RS各端口与CSI-RS端口对应关系为:QCL-CSI-RS端口0对应于CSI-RS端口0,QCL-CSI-RS端口1对应于CSI-RS端口4,QCL-CSI-RS端口2对应于CSI-RS端口6,则表示CSI-RS端口0~3满足QCL关系,CSI-RS端口4~5满足QCL关系,CSI-RS端口6~7满足QCL关系,且3组之间不满足QCL关系,以及终端默认QCL-CSI-RS端口0的参考信号在CSI-RS端口0发送;QCL-CSI-RS端口1在CSI-RS端口4上发送,QCL-CSI-RS端口2在CSI-RS端口6上发送。
基于该优选实施例,终端默认CSI-RS中满足QCL的CSI-RS端口为索引连续的CSI-RS端口。第k组满足QCL的CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k对应的CSI-RS端口Pk,确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足QCL的CSI-RS的端口为Pk~Pk+1-1,其中,当端口k为QCL-CSI-RS的最大端口索引时,第k组满足QCL的CSI-RS的端口为Pk~N,其中,N为CSI-RS的端口数目。
与上述优选实施例五相比,该优选实施例所提供的优选实施方式可以更为灵活地支持网络侧设备基于多个small cell进行联合传输。为网络侧设备根据实际情况调整提供了灵活度。
优选实施例七
在上述优选实施例五中,最大只支持基于2个small cell联合为终端发送时,基于CSI-RS和QCL-CSI-RS估计所对应的信道大尺度参数中的至少频偏、频率扩展参数。而在上述优选实施例六中,可以支持多个small cell联合传输,但需要终端假设CSI-RS中满足QCL的CSI-RS端口为索引连续的CSI-RS端口。
在该优选实施例中,QCL-CSI-RS配置指示信息中携带有端口数目信息,且端口数目隐含指示CSI-RS中QCL分组信息,并由CSI-RS的QCL分组信息决定,其中,CSI-RS中的QCL分组信息是指当CSI-RS中的所有端口之间不能全部满足QCL特性时,对端口进行分组以使其中满足QCL特性的端口位于同一组。
在该优选实施例中,可以支持多个QCL-CSI-RS端口,并指示QCL-CSI-RS的每个端口对应的CSI-RS端口分组。此时,网络侧在发送QCL-CSI-RS时,QCL-CSI-RS端口k上的参考信号在第k个QCL分组中CSI-RS端口索引最小的端口上发送,并在QCL-CSI-RS配置指示信息中包括QCL-CSI-RS各端口与CSI-RS的端口对应关系信息。例如:
仍然假设CSI-RS端口数目为8;且QCL-CSI-RS配置了2个端口,即意味着CSI-RS中有两组端口满足QCL关系,在配置指示QCL-CSI-RS各端口与CSI-RS的端口对应关系时,明确指示每个QCL-CSI-RS端口对应的CSI-RS端口分组;例如:QCL-CSI-RS端口0对应CSI-RS的端口{0123},QCL-CSI-RS端口1对应CSI-RS的端口{4567},则此时意味着CSI-RS有两组端口分别满足QCL关系,且QCL-CSI-RS端口上的参考信号在第k个QCL分组中CSI-RS端口索引最小的端口上发送,即端口0的参考信号在CSI-RS端口0发送,QCL-CSI-RS端口1的参考信号在CSI-RS端口4上发送。
基于上述优选实施方式,可以通过明确的信令指示终端CSI-RS的不同端口分组关系,以部分额外信令为代价,进一步提高了CSI-RS中QCL端口配置的灵活度。
优选实施例八
在该优选实施例中配置的QCL-CSI-RS,终端联合QCL-CSI-RS和对应的CSI-RS测量一个或多个QCL-CSI-RS端口上频偏、频率扩展大尺度参数中至少之一,并将测量的频偏参数反馈给网络侧设备。网络侧设备基于终端的反馈,对small cell进行频偏校准或者在发送信号时进行频偏与校正。
在一种优选实施方式下,终端在进行频偏参数反馈时,直接反馈给无线资源控制(RRC)连接建立的节点,并由该节点将频偏校准信息发送给其他待校正节点。
在另一种优选实施方式下,由RRC连接建立节点或集中控制节点通知相关small cell接收终端的反馈信息,并基于终端反馈的频偏校准信息进行各自的校正。
终端在进行频偏信息反馈时,既可以通过物理上行控制信道(PUCCH)周期性地进行反馈,也可以基于物理上行共享信道(PUSCH)非周期地进行反馈或者事件触发进行非周期地反馈。
图5是根据本发明实施例的准共位置的配置装置的结构框图。如图5所示,该准共位置的配置装置可以包括:获取模块100,设置为获取当前配置的全部CSI-RS;第
一配置模块102,设置为为全部CSI-RS中的每一套CSI-RS分别配置对应的QCL-CSI-RS,并将全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数。
采用如图5所示的装置,解决了相关技术中缺乏一种UDN中协作UE进行大尺度特征参数估计的解决方案的问题,进而避免CSI-RS在用于频偏、频率扩展估计时所受到的噪声影响,可以直接利用CSI-RS作为小区发现信号使用。
在优选实施过程中,上述信道大尺度特征参数可以包括但不限于以下至少之一:
频偏参数、频率扩展参数。
优选地,如图6所示,上述装置还可以包括:发送模块104,设置为在CSI-RS所使用的部分或全部端口上发送对应的QCL-CSI-RS。
优选地,发送模块104,设置为按照以下方式之一执行发送操作:方式一:QCL-CSI-RS默认只支持1个端口,此时QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;方式二:在CSI-RS端口数目大于等于2时,QCL-CSI-RS默认最大支持2个端口,并指示QCL-CSI-RS端口数目信息,此时当QCL-CSI-RS端口数目为1的情况下,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS端口数目为2的情况下,QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口1上发送;或者QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数;方式三:QCL-CSI-RS默认只支持2个端口,QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送;方式四:网络侧配置QCL-CSI-RS的端口数目信息和/或QCL-CSI-RS各端口与CSI-RS各端口的对应关系,根据对应关系确定发送QCL-CSI-RS端口参考信号序列的CSI-RS端口。
优选地,如图6所示,上述装置还可以包括:第一指示模块106,设置为向终端指示QCL-CSI-RS的参数配置信息和CSI-RS的参数配置信息,其中,QCL-CSI-RS参数配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;相对子帧配置信息包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,如图6所示,上述装置还可以包括:第二指示模块108,设置为向终端发送QCL-CSI-RS的配置指示信息,其中,配置指示信息中携带有QCL-CSI-RS的端口数目信息,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定,QCL分组信息用于表示当CSI-RS中的所有端口之间无法全部满足QCL特性时,对端口进行分组,将满足QCL特性的端口划分至相同组别。
优选地,发送模块104,还设置为将QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送,其中,k为自然数。
优选地,上述配置指示信息中还可以携带有QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息。
在优选实施过程中,上述对应关系信息可以为以下之一:
(1)QCL-CSI-RS的每个端口对应的CSI-RS端口;
(2)QCL-CSI-RS的每个端口对应的CSI-RS端口分组。
优选地,QCL-CSI-RS与CSI-RS在不同的正交频分复用符号上或者在不同的时隙上发送。
优选地,发送QCL-CSI-RS与发送CSI-RS的时间间隔小于预设阈值。
优选地,如图6所示,上述装置还可以包括:第一处理模块110,设置为与终端预先约定CSI-RS与QCL-CSI-RS的子帧偏置,并默认QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,子帧偏置不为0且K为正整数。
优选地,QCL-CSI-RS的发送周期为CSI-RS的发送周期的X倍,其中,X=2n,n为自然数。
优选地,QCL-CSI-RS与CSI-RS采用相同的序列。
优选地,如图6所示,上述装置还可以包括:第二配置模块112,设置为通过配置ZP CSI-RS以使ZP CSI-RS覆盖与QCL-CSI-RS对应的RE,或者,通过配置NZP CSI-RS以使NZP CSI-RS中的至少一套覆盖与QCL-CSI-RS对应的RE。
优选地,QCL-CSI-RS在部分可用带宽上发送,并在配置指示信息中携带QCL-CSI-RS的传输频带指示信息。
优选地,如图6所示,上述装置还可以包括:接收模块114,设置为接收终端反馈的频偏信息;第二处理模块116,设置为基于频偏信息进行晶振的重新锁相处理,或者,在CSI-RS和/或解调参考信号DMRS发送时进行频偏预校准。
图7是根据本发明实施例的准共位置的确定装置的结构框图。如图7所示,该准共位置的确定装置可以包括:接收模块200,设置为接收网络侧设备配置的CSI-RS信息以及为每套CSI-RS配置的QCL-CSI-RS配置信息;第一确定模块202,设置为根据网络侧设备配置的CSI-RS信息以及与CSI-RS对应的QCL-CSI-RS配置信息确定CSI-RS和QCL-CSI-RS的资源位置及参考信号序列配置信息;估计模块204,设置为利用在CSI-RS的资源位置上接收到的CSI-RS参考信号和在QCL-CSI-RS的资源位置上接收到的QCL-CSI-RS参考信号联合估计信道大尺度特征参数信息。
在优选实施过程中,上述信道大尺度特征参数可以包括但不限于以下至少之一:
(1)频偏参数;
(2)频率扩展参数。
优选地,如图8所示,上述装置还可以包括:第二确定模块206,设置为默认QCL-CSI-RS端口的参考信号在CSI-RS所使用的部分或全部端口上进行发送。
优选地,第二确定模块206,设置为执行以下操作之一:
在QCL-CSI-RS默认只支持1个端口的情况下,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;
在CSI-RS端口数目大于等于2,QCL-CSI-RS默认最大支持2个端口时。当QCL-CSI-RS端口数目为1的情况下,QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送;当QCL-CSI-RS端口数目为2的情况下,QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口1上发送,或者QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送,其中,N为CSI-RS的端口数目且N为正整数。
在CSI-RS端口数目大于等于2,且QCL-CSI-RS只支持2个端口时,默认QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口1上发送,或者QCL-CSI-RS端口0的参考信号与QCL-CSI-RS端口1的参考信号分别在CSI-RS的端口0与端口上发送。
在QCL-CSI-RS端口数目由网络侧配置指示和/或网络侧通知QCL-CSI-RS各端口与CSI-RS各端口的对应关系时,终端根据对应关系确定发送QCL-CSI-RS端口参考信号序列的CSI-RS端口。
优选地,接收模块200可以包括:第一获取单元(图中未示出),设置为接收来自于网络侧设备的QCL-CSI-RS的配置指示信息,其中,配置指示信息中携带有QCL-CSI-RS的端口数目信息,端口数目信息用于隐含指示CSI-RS中的QCL分组信息,并由CSI-RS的QCL分组数量确定;第一确定单元(图中未示出),设置为根据配置指示信息确定CSI-RS的QCL分组方式。
优选地,第一确定单元,设置为执行以下操作之一:
当QCL-CSI-RS的端口数目为1时,默认CSI-RS的所有端口均满足QCL关系;
当QCL-CSI-RS的端口数目为2时,默认CSI-RS的所有端口中的端口组均满足QCL关系,端口组均满足QCL关系,且两个端口组之间不满足QCL关系,同时默认QCL-CSI-RS端口0的参考信号在CSI-RS的端口0上发送,QCL-CSI-RS端口1的参考信号在CSI-RS的端口上发送,其中,N为正整数。
优选地,默认QCL-CSI-RS的端口数目小于或等于2。
优选地,接收模块200可以包括:第二获取单元(图中未示出),设置为获取QCL-CSI-RS的端口数目信息以及QCL-CSI-RS的各个端口与CSI-RS的各个端口的对应关系信息;第二确定单元(图中未示出),设置为根据端口数目信息和对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS的各个端口的参考信号所对应的CSI-RS的端口。
优选地,第二确定单元,设置为执行以下操作之一:
当对应关系信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,默认CSI-RS中满足QCL特性的CSI-RS端口为索引连续的CSI-RS端口,其中,第k组满足QCL特性的CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k所对应的CSI-RS端口Pk以及确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足QCL特性的CSI-RS的端口为Pk~Pk+1-1;当QCL-CSI-RS端口k为QCL-CSI-RS的最大端口索引时,则第k组满足QCL特性的CSI-RS的端口为Pk~N,N为CSI-RS的端口数目,k为自然数,N为正整数;
当对应关系信息指示的是每个满足QCL特性的CSI-RS的端口分组信息时,默认QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送。
优选地,如图8所示,上述装置还可以包括:第三确定模块208,设置为默认传输的与QCL-CSI-RS对应的资源元素RE被零功率ZP CSI-RS所覆盖。
优选地,第一确定模块202,设置为按照预先约定的方式或者通过信令解析的方式确定QCL配置信息可以包括但不限于以下至少之一:
(1)资源配置指示信息;
(2)QCL-CSI-RS端口数目信息;
(3)扰码标识ID信息;
(4)子帧配置信息;
(5)相对子帧配置信息;
(6)映射频带指示信息;
上述相对子帧配置信息可以包括以下至少之一:QCL-CSI-RS相对于CSI-RS的子帧偏置或时隙偏置、QCL-CSI-RS相对于CSI-RS的周期。
优选地,如图8所示,上述装置还可以包括:反馈模块210,设置为在根据QCL-CSI-RS参考信号与CSI-RS参考信号联合估计频偏之后,将频偏估计结果反馈至网络侧设备。
作为本发明的一个优选实施例,图9是根据本发明优选实施例的一种小区虚拟化中用于QCL增强的系统的结构示意图。如图9所示,该系统可以包括但不限于:终端和基站,其中,基站可以包括:QCL-CSI-RS生成单元、信令配置单元。可选的,还可以包括频偏校准或预校正单元。下面将对各个单元之间相互作用的具体功能介绍如下:
QCL-CSI-RS生成单元,负责为每套CSI-RS生成QCL-CSI-RS,其中,QCL-CSI-RS用于与CSI-RS联合估计信道大尺度特征参数,该信道大尺度特征参数可以包括但不限于:频偏参数、频率扩展参数。
在发送QCL-CSI-RS时,在与CSI-RS相同的部分或全部端口上发送。
在发送QCL-CSI-RS时,在与CSI-RS相同的部分或全部端口上发送,并可以进一步包括以下方式至少之一:
方式一、QCL-CSI-RS默认只支持1个端口,且QCL-CSI-RS端口0的参考信号在CSI-RS端口0上发送。
方式二、QCL-CSI-RS默认最大支持2个端口,且当QCL-CSI-RS端口数为1时,QCL-CSI-RS端口0的参考信号在CSI-RS端口0上发送。当QCL-CSI-RS端口数为2时,QCL-CSI-RS的端口0和1的参考信号分别在CSI-RS的端口0和1上发送;或者在CSI-RS的端口0,上发送,其中,N为CSI-RS的端口数目。
方式三、QCL-CSI-RS默认只支持2个端口,且QCL-CSI-RS的端口0和1的参考信号分别在CSI-RS的端口0和1上发送;或者在CSI-RS的端口0,上发送,其中,N为CSI-RS的端口数目。
基站为终端配置QCL-CSI-RS参数指示信息,在QCL-CSI-RS参数指示信息中,可以包括下述配置信息中至少之一:
(1)资源配置指示信息;
(2)QCL-CSI-RS端口数目信息;
(3)扰码ID信息;
(4)子帧配置信息;
(5)相对子帧配置信息。
其中,在QCL-CSI-RS参数指示信息中还可以携带有端口数目信息。端口数目隐含指示CSI-RS中QCL分组信息,并由CSI-RS的QCL分组信息决定;其中,CSI-RS中的QCL分组信息是指当CSI-RS中的所有端口之间不能全部满足QCL特性时,对端口进行分组,使其中满足QCL特性的端口位于同一组。
QCL-CSI-RS配置指示信息中还可以包括QCL-CSI-RS各端口与CSI-RS端口的对应关系信息。
在发送QCL-CSI-RS时,在与CSI-RS相同的部分或全部端口上发送,其可以进一步包括:QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上发送。
QCL-CSI-RS配置指示信息中还可以包括:QCL-CSI-RS各端口与CSI-RS的端口对应关系信息为以下方式任意一种:
1)QCL-CSI-RS端口中的每个端口对应的CSI-RS端口;
2)QCL-CSI-RS的每个端口对应的CSI-RS端口分组;
其中,QCL-CSI-RS与CSI-RS至少不在相同的OFDM符号上或者相同的时隙上发送,优先的QCL-CSI-RS与对应的CSI-RS之间的时间间隔大于或等于第一预定阈值。QCL-CSI-RS与对应的CSI-RS之间的时间间隔小于或等于第二预设阈值。
基站与终端之间可以预先约定CSI-RS和QCL-CSI-RS的子帧偏置和/或周期,并默认QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,子帧偏置不为0,QCL-CSI-RS的发送周期为CSI-RS发送周期的1/2/4/8倍。
QCL-CSI-RS与对应的CSI-RS可以采用相同的序列。
基站在配置ZP CSI-RS时,使ZP CSI-RS覆盖QCL-CSI-RS对应的RE。或者,基站在配置NZP CSI-RS时,使NZP CSI-RS中的至少某一套覆盖QCL-CSI-RS。
QCL-CSI-RS在部分带宽上发送,并在配置指示信息中携带有QCL-CSI-RS的传输频带指示信息。
信令配置单元,负责将为每套CSI-RS生成的QCL-CSI-RS参数信息配置给终端。
可选地,频偏校准或预校正单元,负责根据终端反馈的频偏信息进行晶振的重新锁相或者在CSI-RS和/或DMRS发送时进行频偏预校准。
终端可以包括:信令接收解析单元、参数估计单元、校正和参数生成单元。可选的,还可以包括:参数反馈单元。
信令接收并解析单元,负责接收网络侧设备配置的CSI-RS信息以及为每套CSI-RS配置的QCL-CSI-RS配置信息。
终端可以根据与网络侧设备之间的约定,默认QCL-CSI-RS在与CSI-RS相同的部分或全部端口上发送。
在没有QCL-CSI-RS端口数目与CSI-RS端口关系配置信息时,终端则默认QCL-CSI-RS的端口数目最大不超过2。
当QCL-CSI-RS只支持1个端口时,终端默认QCL-CSI-RS参考信号在CSI-RS端口0上发送。当QCL-CSI-RS支持2个端口时,如果QCL-CSI-RS端口数为1,终端则默认QCL-CSI-RS端口0的参考信号在CSI-RS端口0上发送。如果QCL-CSI-RS端口数为2,终端则默认QCL-CSI-RS的端口0和1的参考信号分别在CSI-RS的端口0和1上发送;或者在CSI-RS的端口0,N/2上发送,其中,N为CSI-RS的端口数目。
终端获取QCL-CSI-RS的端口数目信息,终端根据QCL-CSI-RS端口数目信息确定CSI-RS的QCL分组方式。
当QCL-CSI-RS端口数目为1时,终端默认CSI-RS的所有端口满足QCL关系;当QCL-CSI-RS端口数目为2时,终端默认CSI-RS的所有端口中,端口组满足QCL关系,端口组满足QCL关系,且两个组之间不满足QCL关系,同时默认QCL-CSI-RS端口0的参考信号在CSI-RS端口0上发送;QCL-CSI-RS端口1的参考信号在CSI-RS端口上发送。
或者,终端接收QCL-CSI-RS的端口数目信息以及QCL-CSI-RS各端口与CSI-RS的端口对应关系信息,终端可以根据QCL-CSI-RS端口数目信息以及QCL-CSI-RS各端口与CSI-RS的端口对应关系信息确定CSI-RS的QCL分组情况以及QCL-CSI-RS各端口参考信号对应的CSI-RS的端口。具体的:
当QCL-CSI-RS各端口与CSI-RS的端口对应关系配置信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,终端默认CSI-RS中满足QCL的CSI-RS端口为索引连续的CSI-RS端口。第k组满足QCL的CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k对应的CSI-RS端口Pk,确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足满足QCL的CSI-RS的端口为Pk~Pk+1-1,其中,当端口k为QCL-CSI-RS的最大端口索引时,第k组满足QCL的CSI-RS的端口为Pk~N,其中,N为CSI-RS的端口数目。
当QCL-CSI-RS各端口与CSI-RS的端口对应关系配置信息指示的是每个满足QCL的CSI-RS的端口分组信息时,终端则默认QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上发送。
终端默认传输QCL-CSI-RS的RE被ZP-CSI-RS所覆盖;或者终端默认的QCL-CSI-RS至少被配置的NZP CSI-RS中的某一套覆盖。
终端按照预先约定的方式或者通过信令解析的方式确定QCL-CSI-RS的下述参数至少之一:发送周期、子帧偏置、资源配置、参考信号初始化参数。
参数估计单元,负责根据接收到的配置信息,利用CSI-RS及对应的QCL-CSI-RS联合进行至少频偏、频率扩展的大尺度参数之一的估计。
校正和参数生成单元,负责根据参数估计单元估计的频偏参数进行频偏校正,和/或,根据参数估计单元估计的频率扩展参数生成信道估计时的滤波系数。
可选地,反馈单元,负责将频偏参数反馈给基站。
需要说明的是,在特定场景下,终端校正和参数生成单元中的频偏校正功能与反馈单元将频偏参数反馈给基站的功能可以二者选其一。
从以上的描述中,可以看出,上述实施例实现了如下技术效果(需要说明的是这些效果是某些优选实施例可以达到的效果):采用本发明实施例所提供的技术方案,能够解决CSI-RS在用于频偏、频率扩展估计时受噪声影响严重而导致的性能差的问题,同时还能够解决在小区虚拟化过程中,小区间进行JT传输时,不同CSI-RS port间不满足QCL的问题,从而使得可以直接利用CSI-RS作为小区发现信号使用,即一方面通过配置QCL-CSI-RS使得CSI-RS能够支持小区发现过程中进行频偏、频率扩展的估计;而另一方面,由于QCL-CSI-RS与CSI-RS在相同端口发送,相当于增加了部分或全部端口CSI-RS的密度。此外,还可以根据网络中的CSI-RS使用情况灵活地选择作为QCL-CSI-RS的资源配置。而在进行DMRS信道估计时,也可以根据QCL-CSI-RS不同端口估计得到的时延、频偏、时延扩展、频率扩展产生DMRS信道估计参数(例如:时延参数、频率扩展参数)。
显然,本领域的技术人员应该明白,上述的本发明的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处
的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
如上所述,本发明实施例提供的一种准共位置的配置、确定方法及装置具有以下有益效果:可以直接利用CSI-RS作为小区发现信号使用,即一方面通过配置QCL-CSI-RS使得CSI-RS能够支持小区发现过程中进行频偏、频率扩展的估计;而另一方面,由于QCL-CSI-RS与CSI-RS在相同端口发送。此外,还可以根据网络中的CSI-RS使用情况灵活地选择作为QCL-CSI-RS的资源配置。而在进行DMRS信道估计时,也可以根据QCL-CSI-RS不同端口估计得到的时延、频偏、时延扩展、频率扩展产生DMRS信道估计参数。
Claims (58)
- 一种准共位置的配置方法,包括:获取当前配置的全部信道状态信息参考信号CSI-RS;为所述全部CSI-RS中的每一套CSI-RS分别配置对应的准共位置信道状态信息参考信号QCL-CSI-RS,其中,所述QCL-CSI-RS用于与所述CSI-RS联合估计信道大尺度特征参数;将所述全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端。
- 根据权利要求1所述的方法,其中,所述信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
- 根据权利要求1所述的方法,其中,在为所述CSI-RS配置对应的所述QCL-CSI-RS之后,还包括:在所述CSI-RS所使用的部分或全部端口上发送对应的所述QCL-CSI-RS。
- 根据权利要求3所述的方法,其中,在所述CSI-RS所使用的部分或全部端口上发送对应的所述QCL-CSI-RS包括以下之一:所述QCL-CSI-RS默认只支持1个端口,QCL-CSI-RS端口0的参考信号在所述CSI-RS的端口0上发送;所述QCL-CSI-RS默认最大支持2个端口,当QCL-CSI-RS端口数目为1时,所述QCL-CSI-RS端口0的参考信号在所述CSI-RS的端口0上发送;当所述QCL-CSI-RS端口数目为2时,所述QCL-CSI-RS端口0和端口1的参考信号分别在所述CSI-RS的端口0与端口1上发送;或者,所述QCL-CSI-RS端口0和端口1的参考信号分别在所述CSI-RS的端口0与端口上发送,其中,N为所述CSI-RS的端口数目且N为正整数,表示对x向上取整;
- 根据权利要求1所述的方法,其中,在为所述CSI-RS配置对应的所述QCL-CSI-RS之后,还包括:向终端指示所述QCL-CSI-RS的参数配置信息,其中,所述参数配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码标识ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;所述相对子帧配置信息包括以下至少之一:所述QCL-CSI-RS相对于所述CSI-RS的子帧偏置或时隙偏置、所述QCL-CSI-RS相对于CSI-RS的周期。
- 根据权利要求1所述的方法,其中,在为所述CSI-RS配置对应的所述QCL-CSI-RS之后,还包括:向终端发送所述QCL-CSI-RS的配置指示信息,其中,所述配置指示信息中携带有所述QCL-CSI-RS的端口数目信息,所述端口数目信息用于隐含指示所述CSI-RS中的QCL分组信息,并由所述CSI-RS的QCL分组数量确定,所述QCL分组信息用于表示当所述CSI-RS中的所有端口之间无法全部满足QCL特性时,对端口进行分组,将满足所述QCL特性的端口划分至相同组别。
- 根据权利要求3或6所述的方法,其中,在所述CSI-RS所使用的部分或全部端口上发送对应的所述QCL-CSI-RS包括:将QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送,其中,k为自然数。
- 根据权利要求6所述的方法,其中,所述配置指示信息中还携带有所述QCL-CSI-RS的各个端口与所述CSI-RS的各个端口的对应关系信息。
- 根据权利要求8所述的方法,其中,所述对应关系信息为以下之一:所述QCL-CSI-RS的每个端口对应的CSI-RS端口;所述QCL-CSI-RS的每个端口对应的CSI-RS端口分组。
- 根据权利要求1所述的方法,其中,所述QCL-CSI-RS与所述CSI-RS在不同的正交频分复用符号上或者在不同的时隙上或者在与CSI-RS时间间隔大于第一预定阈值的子帧或时隙上发送。
- 根据权利要求1或10所述的方法,其中,发送所述QCL-CSI-RS与发送所述CSI-RS的时间间隔小于第二预设阈值。
- 根据权利要求11所述的方法,其中,与终端预先约定所述CSI-RS与所述QCL-CSI-RS的子帧偏置,并默认所述QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,所述子帧偏置不为0且K为正整数。
- 根据权利要求1或11所述的方法,其中,所述QCL-CSI-RS的发送周期为所述CSI-RS的发送周期的X倍,其中,X=2n,n为自然数。
- 根据权利要求1所述的方法,其中,所述QCL-CSI-RS与所述CSI-RS采用相同的序列。
- 根据权利要求1所述的方法,其中,所述方法还包括:通过配置零功率ZP CSI-RS以使所述ZP CSI-RS覆盖与所述QCL-CSI-RS对应的资源元素RE,或者,通过配置非零功率NZP CSI-RS以使所述NZP CSI-RS中的至少一套覆盖与所述QCL-CSI-RS对应的RE。
- 根据权利要求6所述的方法,其中,所述QCL-CSI-RS在部分可用带宽上发送,并在所述配置指示信息中携带所述QCL-CSI-RS的传输频带指示信息。
- 根据权利要求1所述的方法,其中,在为所述CSI-RS配置对应的所述QCL-CSI-RS之后,还包括:接收终端反馈的频偏信息;基于所述频偏信息进行晶振的重新锁相处理,或者,在所述CSI-RS和/或解调参考信号DMRS发送时进行频偏预校准。
- 一种准共位置的确定方法,包括:接收网络侧设备配置的信道状态信息参考信号CSI-RS信息以及为每套CSI-RS配置的准共位置信道状态参考信号QCL-CSI-RS配置信息;根据所述CSI-RS信息以及所述QCL-CSI-RS配置信息确定CSI-RS和QCL-CSI-RS的资源位置;利用在所述CSI-RS的资源位置上接收到的CSI-RS参考信号和在所述QCL-CSI-RS的资源位置上接收到的QCL-CSI-RS参考信号联合估计信道大尺度特征参数。
- 根据权利要求18所述的方法,其中,所述信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
- 根据权利要求18所述的方法,其中,在进行联合估计信道大尺度特征参数之前,还包括:默认所述QCL-CSI-RS端口的参考信号在所述CSI-RS使用的部分或全部端口上进行发送。
- 根据权利要求18所述的方法,其中,接收所述CSI-RS信息以及所述QCL-CSI-RS配置信息包括:从所述QCL-CSI-RS配置指示信息中获取所述QCL-CSI-RS的端口数目信息,其中,所述端口数目信息用于隐含指示所述CSI-RS中的QCL分组信息,并由所述CSI-RS的QCL分组数量确定;根据所述配置指示信息确定所述CSI-RS的QCL分组方式。
- 根据权利要求23所述的方法,其中,默认所述QCL-CSI-RS的端口数目小于或等于2。
- 根据权利要求18所述的方法,其中,接收所述CSI-RS信息以及所述QCL-CSI-RS配置信息包括:从所述QCL-CSI-RS配置指示信息中获取所述QCL-CSI-RS的端口数目信息以及所述QCL-CSI-RS的各个端口与所述CSI-RS的各个端口的对应关系信息;根据所述端口数目信息和所述对应关系信息确定所述CSI-RS的QCL分组情况以及所述QCL-CSI-RS的各个端口的参考信号发送所对应的CSI-RS的端口。
- 根据权利要求25所述的方法,其中,根据所述端口数目信息和所述对应关系信息确定所述CSI-RS的QCL分组情况以及所述QCL-CSI-RS的各个端口的参考信号发送所对应的CSI-RS的端口包括以下之一:当所述对应关系信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,默认所述CSI-RS中满足QCL特性的CSI-RS端口为索引连续的CSI-RS端口,其中,第k组满足所述QCL特性的所述CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k所对应的CSI-RS端口Pk以及确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足所述QCL特性的所述CSI-RS的端口为Pk~Pk+1-1;当所述QCL-CSI-RS端口k为所述QCL-CSI-RS的最大端口索引时,则第k组满足所述QCL特性的所述CSI-RS的端口为Pk~N,N为所述CSI-RS的端口数目,k为自然数,N为正整数;当所述对应关系信息指示的是每个满足QCL特性的CSI-RS的端口分组信息时,默认所述QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送。
- 根据权利要求18所述的方法,其中,所述方法还包括:默认传输的与所述QCL-CSI-RS对应的资源元素RE被零功率ZP CSI-RS所覆盖。
- 根据权利要求18所述的方法,其中,按照预先约定的方式或者通过信令解析的方式确定所述QCL-CSI-RS配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码标识ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;所述相对子帧配置信息包括以下至少之一:所述QCL-CSI-RS相对于所述CSI-RS的子帧偏置或时隙偏置、所述QCL-CSI-RS相对于CSI-RS的周期。
- 根据权利要求18所述的方法,其中,在联合估计所述大尺度特征参数信息之后,还包括:在根据所述QCL-CSI-RS参考信号与所述CSI-RS参考信号联合估计频偏之后,将频偏估计结果反馈至所述网络侧设备。
- 一种准共位置的配置装置,包括:获取模块,设置为获取当前配置的全部信道状态信息参考信号CSI-RS;第一配置模块,设置为为所述全部CSI-RS中的每一套CSI-RS分别配置对应的准共位置信道状态信息参考信号QCL-CSI-RS,并将所述全部CSI-RS以及各套CSI-RS对应的QCL-CSI-RS配置给终端,其中,所述QCL-CSI-RS用于与所述CSI-RS联合估计信道大尺度特征参数。
- 根据权利要求30所述的装置,其中,所述信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
- 根据权利要求30所述的装置,其中,所述装置还包括:发送模块,设置为在所述CSI-RS所使用的部分或全部端口上发送对应的所述QCL-CSI-RS。
- 根据权利要求32所述的装置,其中,所述发送模块,设置为按照以下方式之一执行发送操作:所述QCL-CSI-RS默认只支持1个端口,QCL-CSI-RS端口0的参考信号在所述CSI-RS的端口0上发送;所述QCL-CSI-RS默认最大支持2个端口,当QCL-CSI-RS端口数目为1时,所述QCL-CSI-RS端口0的参考信号在所述CSI-RS的端口0上发送;当所述QCL-CSI-RS端口数目为2时,所述QCL-CSI-RS端口0和端口1的参考 信号分别在所述CSI-RS的端口0与端口1上发送;或者,所述QCL-CSI-RS端口0和端口1的参考信号分别在所述CSI-RS的端口0与端口上发送,其中,N为所述CSI-RS的端口数目且N为正整数,表示对x向上取整;
- 根据权利要求30所述的装置,其中,所述装置还包括:第一指示模块,设置为向终端指示所述QCL-CSI-RS的参数配置信息,其中,所述参数配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码标识ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;所述相对子帧配置信息包括以下至少之一:所述QCL-CSI-RS相对于所述CSI-RS的子帧偏置或时隙偏置、所述QCL-CSI-RS相对于CSI-RS的周期。
- 根据权利要求30所述的装置,其中,所述装置还包括:第二指示模块,设置为向终端发送所述QCL-CSI-RS的配置指示信息,其中,所述配置指示信息中携带有所述QCL-CSI-RS的端口数目信息,所述端口数目信息用于隐含指示所述CSI-RS中的QCL分组信息,并由所述CSI-RS的QCL分组数量确定,所述QCL分组信息用于表示当所述CSI-RS中的所有端口之间无法全部满足QCL特性时,对端口进行分组,将满足所述QCL特性的端口划分至相同组别。
- 根据权利要求32或35所述的装置,其中,所述发送模块,还设置为将QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送,其中,k为自然数。
- 根据权利要求35所述的装置,其中,所述配置指示信息中还携带有所述QCL-CSI-RS的各个端口与所述CSI-RS的各个端口的对应关系信息。
- 根据权利要求37所述的装置,其中,所述对应关系信息为以下之一:所述QCL-CSI-RS的每个端口对应的CSI-RS端口;所述QCL-CSI-RS的每个端口对应的CSI-RS端口分组。
- 根据权利要求30所述的装置,其中,所述QCL-CSI-RS与所述CSI-RS在不同的正交频分复用符号上或者在不同的时隙上或者在与CSI-RS时间间隔大于第一预定阈值的子帧或时隙上发送。
- 根据权利要求30或39所述的装置,其中,发送所述QCL-CSI-RS与发送所述CSI-RS的时间间隔小于第二预设阈值。
- 根据权利要求30所述的装置,其中,所述装置还包括:第一处理模块,设置为与终端预先约定所述CSI-RS与所述QCL-CSI-RS的子帧偏置,并默认所述QCL-CSI-RS与CSI-RS索引最小的K个端口占用相同的资源位置,其中,所述子帧偏置不为0且K为正整数。
- 根据权利要求30或40所述的装置,其中,所述QCL-CSI-RS的发送周期为所述CSI-RS的发送周期的X倍,其中,X=2n,n为自然数。
- 根据权利要求30所述的装置,其中,所述QCL-CSI-RS与所述CSI-RS采用相同的序列。
- 根据权利要求30所述的装置,其中,所述装置还包括:第二配置模块,设置为通过配置零功率ZP CSI-RS以使所述ZP CSI-RS覆盖与所述QCL-CSI-RS对应的资源元素RE,或者,通过配置非零功率NZP CSI-RS以使所述NZP CSI-RS中的至少一套覆盖与所述QCL-CSI-RS对应的RE。
- 根据权利要求35所述的装置,其中,所述QCL-CSI-RS在部分可用带宽上发送,并在所述配置指示信息中携带所述QCL-CSI-RS的传输频带指示信息。
- 根据权利要求30所述的装置,其中,所述装置还包括:接收模块,设置为接收终端反馈的频偏信息;第二处理模块,设置为基于所述频偏信息进行晶振的重新锁相处理,或者,在所述CSI-RS和/或解调参考信号DMRS发送时进行频偏预校准。
- 一种准共位置的确定装置,包括:接收模块,设置为接收网络侧设备配置的信道状态信息参考信号CSI-RS信息以及为每套CSI-RS配置的准共位置信道状态参考信号QCL-CSI-RS配置信息;第一确定模块,设置为根据所述CSI-RS信息以及所述QCL-CSI-RS配置信息确定CSI-RS和QCL-CSI-RS的资源位置;估计模块,设置为利用在所述CSI-RS的资源位置上接收到的CSI-RS参考信号和在所述QCL-CSI-RS的资源位置上接收到的QCL-CSI-RS参考信号联合估计信道大尺度特征参数信息。
- 根据权利要求47所述的装置,其中,所述信道大尺度特征参数包括以下至少之一:频偏参数、频率扩展参数。
- 根据权利要求47所述的装置,其中,所述装置还包括:第二确定模块,设置为默认所述QCL-CSI-RS端口的参考信号在所述CSI-RS所使用的部分或全部端口上进行发送。
- 根据权利要求47所述的装置,其中,所述接收模块包括:第一获取单元,设置为从所述QCL-CSI-RS配置指示信息中获取所述QCL-CSI-RS的端口数目信息,其中,所述端口数目信息用于隐含指示所述CSI-RS中的QCL分组信息,并由所述CSI-RS的QCL分组数量确定;第一确定单元,设置为根据所述配置指示信息确定所述CSI-RS的QCL分组方式。
- 根据权利要求52所述的装置,其中,默认所述QCL-CSI-RS的端口数目小于或等于2。
- 根据权利要求47所述的装置,其中,所述接收模块包括:第二获取单元,设置为获取所述QCL-CSI-RS的端口数目信息以及所述QCL-CSI-RS的各个端口与所述CSI-RS的各个端口的对应关系信息;第二确定单元,设置为根据所述端口数目信息和所述对应关系信息确定所述CSI-RS的QCL分组情况以及所述QCL-CSI-RS的各个端口的参考信号所对应的CSI-RS的端口。
- 根据权利要求54所述的装置,其中,所述第四确定模块,设置为执行以下操作之一:当所述对应关系信息指示的是承载各个QCL-CSI-RS端口参考信号的CSI-RS端口时,默认所述CSI-RS中满足QCL特性的CSI-RS端口为索引连续的CSI-RS端口,其中,第k组满足所述QCL特性的所述CSI-RS的端口确定方法为:确定QCL-CSI-RS端口k所对应的CSI-RS端口Pk以及确定QCL-CSI-RS端口k+1对应的CSI-RS端口Pk+1,则第k组满足所述QCL特性的所述CSI-RS的端口为Pk~Pk+1-1;当所述QCL-CSI-RS端口k为所述QCL-CSI-RS的最大端口索引时,则第k组满足所述QCL特性的所述CSI-RS的端口为Pk~N,N为所述CSI-RS的端口数目,k为自然数,N为正整数;当所述对应关系信息指示的是每个满足QCL特性的CSI-RS的端口分组信息时,默认所述QCL-CSI-RS端口k上的参考信号在第k个分组中CSI-RS端口索引最小的端口上进行发送。
- 根据权利要求47所述的装置,其中,所述装置还包括:所述第五确定模块,设置为默认传输的与所述QCL-CSI-RS对应的资源元素RE被零功率ZP CSI-RS所覆盖。
- 根据权利要求47所述的装置,其中,所述第一确定模块,设置为按照预先约定的方式或者通过信令解析的方式确定所述QCL-CSI-RS配置信息包括以下至少之一:资源配置指示信息、QCL-CSI-RS端口数目信息、扰码标识ID信息、子帧配置信息、相对子帧配置信息、映射频带指示信息;所述相对子帧配置信息包括以下至少之一:所述QCL-CSI-RS相对于所述CSI-RS的子帧偏置或时隙偏置、所述QCL-CSI-RS相对于CSI-RS的周期。
- 根据权利要求47所述的装置,其中,所述装置还包括:反馈模块,设置为在根据所述QCL-CSI-RS参考信号与所述CSI-RS参考信号联合估计频偏之后,将频偏估计结果反馈至所述网络侧设备。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452074.9 | 2014-09-05 | ||
| CN201410452074.9A CN105471559B (zh) | 2014-09-05 | 2014-09-05 | 准共位置的配置、确定方法及装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016033978A1 true WO2016033978A1 (zh) | 2016-03-10 |
Family
ID=55439090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2015/077321 Ceased WO2016033978A1 (zh) | 2014-09-05 | 2015-04-23 | 准共位置的配置、确定方法及装置 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105471559B (zh) |
| WO (1) | WO2016033978A1 (zh) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170288743A1 (en) * | 2016-03-31 | 2017-10-05 | Samsung Electronics Co., Ltd | Method and apparatus for transmitting and receiving reference signals in wireless communication |
| CN109565521A (zh) * | 2016-08-12 | 2019-04-02 | 高通股份有限公司 | 用于新无线电技术中的信道状态信息获取的技术 |
| CN109982242A (zh) * | 2019-03-29 | 2019-07-05 | 深圳市九洲电器有限公司 | 一种室内定位方法、装置、基站及系统 |
| CN110535592A (zh) * | 2018-09-28 | 2019-12-03 | 中兴通讯股份有限公司 | 一种信息传输的方法及相关设备 |
| TWI679908B (zh) * | 2017-11-24 | 2019-12-11 | 大陸商電信科學技術研究院有限公司 | 資料傳輸、資訊確定方法及裝置、電腦存儲介質 |
| CN111106914A (zh) * | 2018-11-12 | 2020-05-05 | 维沃移动通信有限公司 | 确定控制资源集的准共址的方法、终端和存储介质 |
| CN111148232A (zh) * | 2018-11-02 | 2020-05-12 | 维沃移动通信有限公司 | 信息传输方法及通信设备 |
| CN111585706A (zh) * | 2017-08-11 | 2020-08-25 | 华为技术有限公司 | 利用单端口csi-rs配置传输时间和频率跟踪信号的系统和方法 |
| US20210250158A1 (en) * | 2020-02-07 | 2021-08-12 | Qualcomm Incorporated | Open loop clutter interference mitigation |
| CN115942489A (zh) * | 2017-03-21 | 2023-04-07 | 三星电子株式会社 | 无线系统中用于参考信号的指示的方法和装置 |
| US11888570B2 (en) | 2017-03-23 | 2024-01-30 | Ntt Docomo, Inc. | User terminal and radio communication method |
| EP4425856A3 (en) * | 2016-07-28 | 2024-11-20 | LG Electronics Inc. | Method for receiving reference signal in wireless communication system and device therefor |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342840B (zh) * | 2016-04-29 | 2021-09-03 | 中兴通讯股份有限公司 | 准共位置类型的处理方法及装置 |
| US10039076B2 (en) * | 2016-08-22 | 2018-07-31 | Qualcomm Incorporated | Declaring quasi co-location among multiple antenna ports |
| CN107889150B (zh) | 2016-09-30 | 2019-08-27 | 中兴通讯股份有限公司 | 表征准共位置参数配置的方法和装置、发射及接收设备 |
| WO2018059571A1 (zh) * | 2016-09-30 | 2018-04-05 | 中兴通讯股份有限公司 | 表征准共位置参数配置的方法和装置、发射及接收设备 |
| CN107888266B (zh) * | 2016-09-30 | 2023-09-12 | 华为技术有限公司 | 一种准共址指示信息指示方法及设备 |
| WO2018082696A1 (zh) * | 2016-11-04 | 2018-05-11 | 华为技术有限公司 | 基于码本的信道状态信息反馈方法及设备 |
| CN110944348B (zh) * | 2016-11-04 | 2021-06-29 | 华为技术有限公司 | 一种无线通信方法、装置及其计算机可读存储介质 |
| CN118158722A (zh) * | 2017-01-06 | 2024-06-07 | 华为技术有限公司 | 一种信道状态信息测量的配置方法及相关设备 |
| CN108400852B (zh) * | 2017-02-06 | 2020-10-30 | 电信科学技术研究院 | 一种大尺度信道参数的指示、确定方法、基站及终端 |
| CN110291744B (zh) | 2017-02-16 | 2022-05-24 | 高通股份有限公司 | 确定在平滑预编码下的dmrs平均延迟和延迟扩展的方法 |
| CN108631984B (zh) * | 2017-03-24 | 2022-11-15 | 中兴通讯股份有限公司 | 一种信息配置方法及装置 |
| EP4274148A3 (en) * | 2017-05-05 | 2024-01-17 | Apple Inc. | Quasi co-location (qcl) for antenna ports in new radio (nr) |
| CN112152687B (zh) * | 2017-06-16 | 2024-04-09 | 华为技术有限公司 | 通信方法、终端及网络设备 |
| CN109391311A (zh) | 2017-08-10 | 2019-02-26 | 株式会社Ntt都科摩 | 一种用于波束管理的参考信号发送与接收方法及装置 |
| CN109429338B (zh) * | 2017-08-24 | 2024-03-05 | 株式会社电装 | 频带指示方法、频带确定方法、发射端设备和接收端设备 |
| EP4195574A1 (en) * | 2017-09-14 | 2023-06-14 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Signal processing method and apparatus |
| CN111373707A (zh) * | 2017-11-10 | 2020-07-03 | 高通股份有限公司 | 改进的信道状态信息参考信号生成 |
| CN110034872B (zh) * | 2018-01-11 | 2021-09-07 | 维沃移动通信有限公司 | 资源与qcl的关联关系指示方法、确定方法及相关设备 |
| CN110166190B (zh) * | 2018-02-11 | 2021-02-26 | 华为技术有限公司 | 准共址信息的确定方法及装置 |
| CN109302272B (zh) | 2018-02-13 | 2022-06-03 | 中兴通讯股份有限公司 | Csi报告的发送、接收方法及装置、电子装置 |
| EP4050834B1 (en) * | 2018-04-04 | 2024-10-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Information determination and configuration of non-periodic csi-rs resources with indication of usage for tracking |
| CN110351052B (zh) * | 2018-04-04 | 2020-08-28 | 维沃移动通信有限公司 | 信道和信号的传输方法及通信设备 |
| CN110351058B (zh) * | 2018-04-04 | 2021-10-22 | 华为技术有限公司 | 一种信号传输方法及通信设备 |
| WO2020087483A1 (en) | 2018-11-02 | 2020-05-07 | Qualcomm Incorporated | Csi measurement with different qcl configuration for a same csi-rs resource |
| CN111510267B (zh) * | 2019-01-31 | 2021-12-14 | 成都华为技术有限公司 | 波束指示的方法和通信装置 |
| CN111769900B (zh) * | 2019-04-01 | 2021-08-27 | 大唐移动通信设备有限公司 | 一种信道状态信息参考信号的调度方法及装置 |
| CN115174317A (zh) * | 2021-04-06 | 2022-10-11 | 索尼集团公司 | 用于无线通信的电子设备、无线通信方法以及存储介质 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013119073A1 (ko) * | 2012-02-11 | 2013-08-15 | 엘지전자 주식회사 | 채널상태정보를 보고하기 위한 방법, 이를 지원하기 위한 방법 및 이들을 위한 장치 |
| CN103684676A (zh) * | 2012-09-26 | 2014-03-26 | 中兴通讯股份有限公司 | 天线端口位置关系的通知和确定方法、系统及装置 |
| WO2014070311A1 (en) * | 2012-11-02 | 2014-05-08 | Qualcomm Incorporated | Epdcch resource and quasi-co-location management in lte |
| CN103973399A (zh) * | 2013-01-31 | 2014-08-06 | 中兴通讯股份有限公司 | 一种生成载波配置信息的方法及网络侧设备及用户设备 |
| WO2014129716A1 (en) * | 2013-02-21 | 2014-08-28 | Lg Electronics Inc. | Method and apparatus for configuring qcl between antenna ports for massive mimo in a wireless communication system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468926B (zh) * | 2010-11-09 | 2015-05-20 | 中兴通讯股份有限公司 | 一种下行控制信息的配置方法、网络设备及接入节点 |
| CN103687010B (zh) * | 2012-08-30 | 2017-07-04 | 电信科学技术研究院 | 一种传输参考信号的方法、装置及系统 |
-
2014
- 2014-09-05 CN CN201410452074.9A patent/CN105471559B/zh active Active
-
2015
- 2015-04-23 WO PCT/CN2015/077321 patent/WO2016033978A1/zh not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013119073A1 (ko) * | 2012-02-11 | 2013-08-15 | 엘지전자 주식회사 | 채널상태정보를 보고하기 위한 방법, 이를 지원하기 위한 방법 및 이들을 위한 장치 |
| CN103684676A (zh) * | 2012-09-26 | 2014-03-26 | 中兴通讯股份有限公司 | 天线端口位置关系的通知和确定方法、系统及装置 |
| WO2014070311A1 (en) * | 2012-11-02 | 2014-05-08 | Qualcomm Incorporated | Epdcch resource and quasi-co-location management in lte |
| CN103973399A (zh) * | 2013-01-31 | 2014-08-06 | 中兴通讯股份有限公司 | 一种生成载波配置信息的方法及网络侧设备及用户设备 |
| WO2014129716A1 (en) * | 2013-02-21 | 2014-08-28 | Lg Electronics Inc. | Method and apparatus for configuring qcl between antenna ports for massive mimo in a wireless communication system |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170288743A1 (en) * | 2016-03-31 | 2017-10-05 | Samsung Electronics Co., Ltd | Method and apparatus for transmitting and receiving reference signals in wireless communication |
| US12052069B2 (en) | 2016-03-31 | 2024-07-30 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving reference signals in wireless communication |
| US11038557B2 (en) * | 2016-03-31 | 2021-06-15 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving reference signals in wireless communication |
| EP4425856A3 (en) * | 2016-07-28 | 2024-11-20 | LG Electronics Inc. | Method for receiving reference signal in wireless communication system and device therefor |
| CN109565521A (zh) * | 2016-08-12 | 2019-04-02 | 高通股份有限公司 | 用于新无线电技术中的信道状态信息获取的技术 |
| EP3497918A4 (en) * | 2016-08-12 | 2020-06-17 | Qualcomm Incorporated | METHOD FOR DETECTING CHANNEL STATUS INFORMATION IN A NEW RADIO TECHNOLOGY |
| US11018745B2 (en) | 2016-08-12 | 2021-05-25 | Qualcomm Incorporated | Techniques for channel state information acquisition in new radio technology |
| CN115942489A (zh) * | 2017-03-21 | 2023-04-07 | 三星电子株式会社 | 无线系统中用于参考信号的指示的方法和装置 |
| US11888570B2 (en) | 2017-03-23 | 2024-01-30 | Ntt Docomo, Inc. | User terminal and radio communication method |
| CN111585706B (zh) * | 2017-08-11 | 2021-05-04 | 华为技术有限公司 | 利用单端口csi-rs配置传输时间和频率跟踪信号的系统和方法 |
| US11711180B2 (en) | 2017-08-11 | 2023-07-25 | Futurewei Technologies, Inc. | System and method for communicating time and frequency tracking signals using configurations for one port CSI-RSS |
| CN111585706A (zh) * | 2017-08-11 | 2020-08-25 | 华为技术有限公司 | 利用单端口csi-rs配置传输时间和频率跟踪信号的系统和方法 |
| US10992442B2 (en) | 2017-08-11 | 2021-04-27 | Futurewei Technologies, Inc. | System and method for communicating time and frequency tracking signals using configurations for one port CSI-RSs |
| TWI679908B (zh) * | 2017-11-24 | 2019-12-11 | 大陸商電信科學技術研究院有限公司 | 資料傳輸、資訊確定方法及裝置、電腦存儲介質 |
| US11937234B2 (en) | 2018-09-28 | 2024-03-19 | Zte Corporation | Transmission configuration indication transmission method and devices |
| CN110535592A (zh) * | 2018-09-28 | 2019-12-03 | 中兴通讯股份有限公司 | 一种信息传输的方法及相关设备 |
| CN111148232A (zh) * | 2018-11-02 | 2020-05-12 | 维沃移动通信有限公司 | 信息传输方法及通信设备 |
| US12192999B2 (en) | 2018-11-02 | 2025-01-07 | Vivo Mobile Communication Co., Ltd. | Information transmission method and communications device |
| CN111106914A (zh) * | 2018-11-12 | 2020-05-05 | 维沃移动通信有限公司 | 确定控制资源集的准共址的方法、终端和存储介质 |
| CN111106914B (zh) * | 2018-11-12 | 2022-06-07 | 维沃移动通信有限公司 | 确定控制资源集的准共址的方法、终端和存储介质 |
| CN109982242A (zh) * | 2019-03-29 | 2019-07-05 | 深圳市九洲电器有限公司 | 一种室内定位方法、装置、基站及系统 |
| US11764935B2 (en) * | 2020-02-07 | 2023-09-19 | Qualcomm Incorporated | Open loop clutter interference mitigation |
| US20210250158A1 (en) * | 2020-02-07 | 2021-08-12 | Qualcomm Incorporated | Open loop clutter interference mitigation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105471559A (zh) | 2016-04-06 |
| CN105471559B (zh) | 2020-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105471559B (zh) | 准共位置的配置、确定方法及装置 | |
| US10912044B2 (en) | Method and apparatus for measurement reference signal and synchronization | |
| CN110268667B (zh) | 报告无线通信系统中的信道状态信息的方法及其装置 | |
| CN113890670B (zh) | 广播信道传输和解调 | |
| CN110892771B (zh) | 波束故障恢复请求 | |
| CN111052840B (zh) | 波束故障恢复装置和方法 | |
| CN105122703B (zh) | 接收用于在用户设备之间直接通信的同步信息的方法及其的装置 | |
| US11303412B2 (en) | Methods and apparatuses for downlink tracking reference signal configuration | |
| CN103650368B (zh) | 信道状态信息发射方法和用户设备以及信道状态信息接收方法和基站 | |
| US9907066B2 (en) | Method for receiving discovery reference signal by terminal in wireless communication system and device therefor | |
| CN103684676B (zh) | 天线端口位置关系的通知和确定方法、系统及装置 | |
| KR101901949B1 (ko) | 무선 통신 시스템에서 동기 신호를 송수신하는 방법 및 이를 수행하는 장치 | |
| CN113302869A (zh) | 用于多传输点(trp)的物理下行链路共享信道(pdsch)资源映射 | |
| KR20190122876A (ko) | 무선 시스템에서 기준 신호의 지시 방법 및 장치 | |
| US11930501B2 (en) | Terminal, communication method, base station, and system for receiving synchronization and/or broadcast signals in a given transmission time interval | |
| CN104247495A (zh) | 在无线通信系统中对邻近小区进行测量的方法和装置 | |
| JP6620820B2 (ja) | 送信パターン構成および信号検出のための方法および装置 | |
| US20130195019A1 (en) | Initial access in cells without common reference signals | |
| CN113475104B (zh) | 用于lte-nr频谱共享的mbsfn子帧使用 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15837436 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 15837436 Country of ref document: EP Kind code of ref document: A1 |