CN105812092A - Repeated transmission processing method, device and node - Google Patents
Repeated transmission processing method, device and node Download PDFInfo
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Abstract
本发明公开了一种重复发送处理方法、装置及节点，其中，该方法包括：确定发送物理信道和/或物理信道承载的消息的应用场景；在确定的应用场景中向第二节点发送配置消息，其中，第二节点至少根据配置消息确定物理信道和/或物理信道承载的消息的重复发送次数，解决了相关技术中，存在如何实现特殊场景下部分用户设备UE信道覆盖增强的问题，进而达到了精细化控制不同终端的不同信道的信道增强级别，节省了时频资源的开销，提高了系统频谱利用率的效果。
The present invention discloses a repeated sending processing method, device and node, wherein the method includes: determining an application scenario for sending a physical channel and/or a message carried by the physical channel; sending a configuration message to a second node in the determined application scenario , wherein the second node at least determines the physical channel and/or the number of repeated transmissions of the message carried by the physical channel according to the configuration message, which solves the problem in the related art of how to realize channel coverage enhancement of some user equipment UEs in special scenarios, and then achieves The channel enhancement level of different channels of different terminals can be finely controlled, the overhead of time-frequency resources is saved, and the effect of system spectrum utilization is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a node for processing repeated transmissions.
Background
Machine Type Communication (MTC) user terminals (mtccus), also called M2M (machine to machine, abbreviated as M2M) user communication devices, are the main application form of the internet of things at present. The low power consumption and the low cost are important guarantees for large-scale application. M2M devices currently deployed in the market are mainly based on global system for mobile communications (GSM) system. In recent years, due to the improvement of spectrum efficiency of long term evolution LTE (LTE for short)/LTE-a (subsequent evolution of LTE), more and more mobile operators select LTE/LTE-a as the evolution direction of future broadband wireless communication systems. An LTE/LTE-a based M2M multi-class data service would also be more attractive. Only when the cost of the LTE-M2M device can be made lower than that of the MTC terminal of the GSM system, the M2M service can be really transferred from the GSM to the LTE system.
The main alternative methods for reducing the cost of the MTC user terminal include: reducing the number of receive antennas of the terminal, reducing the baseband processing bandwidth of the terminal, reducing the peak rate supported by the terminal, employing half-duplex mode, and so on. However, the reduction of the cost means the reduction of the performance, and the requirement for the cell coverage of the LTE/LTE-a system cannot be reduced, so that the MTC terminal adopting the low-cost configuration needs to take some measures to meet the coverage performance requirement of the existing LTE terminal. In addition, the MTC terminal may be located in a basement, a corner, or the like, and is in a worse scenario than a normal lte ue. In order to compensate for coverage degradation caused by penetration loss, part of the mtues need higher performance improvement, so that uplink and downlink channel coverage enhancement of part of the mtues is necessary for the scene.
Therefore, in the related art, there is a problem how to implement the channel coverage enhancement of the partial user equipment UE in a special scenario.
Disclosure of Invention
The invention provides a repeated transmission processing method and a repeated transmission processing device, which are used for at least solving the problem of how to realize the coverage enhancement of a part of User Equipment (UE) channel in a special scene in the related technology.
According to an aspect of the present invention, there is provided a repeat transmission processing method including: determining an application scene for sending a physical channel and/or a message carried by the physical channel; and sending a configuration message to a second node in the determined application scene, wherein the second node determines the repeated sending times of the physical channel and/or the message carried by the physical channel according to the configuration message.
Preferably, the application scenario comprises a first application scenario, wherein the first application scenario comprises one of: an initial random access procedure of the second node; a contention-based random access procedure of the second node; the second node transitioning from a radio resource control IDLE state, RRC IDLE, to an establish radio resource control CONNECTED state, RRC CONNECTED, with the first node; or, the application scenario includes a second application scenario, where the second application scenario includes: the second node has established a radio resource control, RRC, connected state with the first node.
Preferably, the physical channel comprises at least one of: a physical random access channel; a physical uplink shared channel; a physical uplink control channel; a physical downlink control shared channel; a physical downlink control channel; enhancing a physical downlink control channel; the messages carried by the physical channel include at least one of: a random access response message; a radio resource control, RRC, connection reestablishment request message; a radio resource control, RRC, connection establishment request message; random access collision resolution message.
Preferably, the configuration message carries information about the number of channel enhancement levels of the second node, and the second node repeatedly sends level index information; wherein the number information of the second node channel enhancement levels is used for selecting a mapping table supporting the number of the second node channel enhancement levels from one or more mapping tables, wherein the one or more mapping tables comprise a correspondence relationship between a repeated transmission level of one or more physical channels and/or messages carried by the physical channels and the channel enhancement levels; and the second node repeatedly sending the grade index information is used for determining the repeated sending times of the messages carried by the physical channel and/or the physical channel sent by the second node in the selected mapping table.
Preferably, when the second node repeatedly transmits the level index indicating the repeated transmission times of the message carried by one physical channel and/or physical channel, determining the repeated transmission times according to the repeated transmission level index of the message carried by the physical channel and/or physical channel; and when the second node repeatedly sends the repeated sending times of the messages carried by the at least two physical channels and/or the physical channels, determining the repeated sending times according to the selection information of the repeated sending times of the messages carried by the physical channels and/or the physical channels sent to the second node.
Preferably, the channel enhancement level comprises one of: a coverage enhancement level; a physical channel repeat transmission level; physical random access channel coverage enhancement grade; the physical random access channel repeats the transmission rank.
Preferably, the maximum value of the number of channel enhancement levels corresponding to the frequency division duplex FDD mode is different from the maximum value of the number of channel enhancement levels corresponding to the time division duplex TDD mode.
Preferably, when the application scenario is the second application scenario, after sending the configuration message to the second node, the method further includes: and sending an adjusting message for adjusting the repeated sending times indicated by the configuration message to the second node.
Preferably, the adjustment message carries the following information: the adjustment step length for adjusting the repeated sending times and the adjustment level for adjusting the repeated sending times, wherein the product of the adjustment step length and the adjustment level represents the adjusted repeated sending times.
According to another aspect of the present invention, there is provided a repeat transmission processing apparatus including: the first determining module is used for determining an application scene of a message carried by a physical channel and/or the physical channel; a first sending module, configured to send a configuration message to a second node in the determined application scenario, where the second node determines, according to the configuration message, a number of times of repeated sending of the physical channel and/or the message carried by the physical channel.
Preferably, the first sending module is further configured to send, to the second node, an adjustment message for adjusting the number of times of repeated sending indicated by the configuration message, when the application scenario is that the second node and the first node have established a radio resource control, RRC, connected state.
Preferably, the second node comprises at least one of: one or more terminals; one or more groups of terminals.
Preferably, the terminal comprises at least one of: a human-to-human communication terminal H2HUE, a machine-to-machine communication terminal M2MUE, a machine type communication terminal mtue, a device-to-device communication terminal D2 DUE.
According to a further aspect of the invention, there is provided a node comprising the apparatus of any of the above.
Preferably, the node comprises at least one of: macro base stations, micro base stations, pico base stations, femto base stations, low power nodes, relay stations.
By the invention, the application scene of the message carried by the physical channel and/or the physical channel is determined and sent; and sending a configuration message to a second node in the determined application scene, wherein the second node determines the repeated sending times of the physical channel and/or the message carried by the physical channel at least according to the configuration message, so that the problem of how to realize the coverage enhancement of the UE channel of the partial user equipment in the special scene in the related technology is solved, the channel enhancement levels of different channels of different terminals are finely controlled, the time-frequency resource expense is saved, and the utilization rate of a system frequency spectrum is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of a repetitive transmission processing method according to an embodiment of the present invention;
fig. 2 is a block diagram of a structure of a repeat transmission processing apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram of a structure of a node according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the present embodiment, a repeat transmission processing method is provided, and fig. 1 is a flowchart of a repeat transmission processing method according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the steps of:
step S102, determining an application scene for sending a physical channel and/or a message carried by the physical channel;
step S104, sending a configuration message to the second node in the determined application scene, wherein the second node determines the repeated sending times of the physical channel and/or the message carried by the physical channel according to the configuration message.
Through the steps, the repeated sending times for determining the sending of the physical channel and/or the message carried by the physical channel is sent to the second node according to different scenes, so that the problem of how to realize the coverage enhancement of the UE channel of the part of the user equipment in a special scene in the related technology is solved, the channel enhancement levels of different channels of different terminals are finely controlled, the time-frequency resource expense is saved, and the system spectrum utilization rate is improved.
The application scenes comprise first application scenes, wherein the first application scenes comprise one of the following: an initial random access procedure of the second node; a second node random access process based on competition; the second node transitioning from the radio resource control IDLE state RRC _ IDLE to an establish radio resource control CONNECTED state RRC _ CONNECTED with the first node; the application scenarios include a second application scenario, where the second application scenario includes: the second node has established a radio resource control, RRC, connected state with the first node.
The physical channel includes at least one of: a Physical Random Access Channel (PRACH), a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), an Enhanced Physical Downlink Control Channel (EPDCCH); the messages carried by the physical channel include at least one of: a random access response message; a radio resource control, RRC, connection reestablishment request message; a radio resource control, RRC, connection establishment request message; random access collision resolution message.
When the second node determines the number of times of repeated sending of the physical channel and/or the message carried by the physical channel at least according to the configuration message, and determines the number of times of repeated sending according to the information carried by the received configuration message, multiple processing modes can be adopted, for example, the configuration message carries the number information of the channel enhancement levels of the second node, and the second node repeatedly sends level index information; the quantity information of the second node channel enhancement levels is used for selecting a mapping table supporting the quantity of the second node channel enhancement levels from one or more mapping tables, wherein the one or more mapping tables comprise one or more physical channels and/or a corresponding relation between the repeated sending level of the messages carried by the physical channels and the channel enhancement levels; the second node repeatedly sends the grade index information to be used for determining the repeated sending times of the second node for sending the physical channel and/or the message carried by the physical channel in the selected mapping table.
The second node repeatedly sends the level index, which may indicate one physical channel and/or a message carried by the physical channel, or may indicate multiple (at least two) physical channels and/or messages carried by the physical channels, which are described below respectively.
When the second node repeatedly sends the level index to indicate the repeated sending times of the message carried by the physical channel and/or the physical channel, determining the repeated sending times according to the repeated sending level index of the message carried by the physical channel and/or the physical channel; and when the second node repeatedly sends the repeated sending times of the messages carried by the at least two physical channels and/or the physical channels, determining the repeated sending times according to the selection information of the repeated sending times of the messages carried by the physical channels and/or the physical channels sent to the second node.
It should be noted that the channel enhancement level may include one of the following: a coverage enhancement level; a physical channel repeat transmission level; physical random access channel coverage enhancement grade; the physical random access channel repeats the transmission rank. For example, the maximum value of the number of channel enhancement levels in the FDD mode may be greater than the maximum value of the number of channel enhancement levels in the TDD mode.
Preferably, in the case that the application scenario is the second application scenario, after sending the configuration message to the second node, the method further includes: and sending an adjusting message for adjusting the repeated sending times indicated by the configuration message to the second node. Preferably, the following information may be carried in the adjustment message: the adjustment step length for adjusting the repeated sending times and the adjustment level for adjusting the repeated sending times, wherein the product of the adjustment step length and the adjustment level represents the adjusted repeated sending times.
In this embodiment, a repeated transmission processing apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description already made is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 2 is a block diagram showing the configuration of a repeat transmission processing apparatus according to an embodiment of the present invention, which includes a first determination module 22 and a first transmission module 26, as shown in fig. 2, and is explained below.
A first determining module 22, configured to determine an application scenario for sending a physical channel and/or a message carried by the physical channel; a first sending module 26, connected to the first determining module 22, configured to send a configuration message to the second node in the determined application scenario, where the second node determines, according to the configuration message, at least the number of times of repeated sending of the physical channel and/or the message carried by the physical channel.
Preferably, the first sending module 26 is further configured to send, to the second node, an adjustment message for adjusting the number of repeated sending times indicated by the configuration message, when the application scenario is that the second node and the first node have established the radio resource control RRC connected state.
Preferably, the second node may include at least one of: one or more terminals; one or more groups of terminals. Wherein the terminal comprises at least one of: a human-to-human communication terminal (H2 HUE), a machine-to-machine communication terminal (M2 MUE), a machine type communication terminal (mtcu), and a device-to-device communication terminal (D2 DUE).
Fig. 3 is a block diagram of a node according to an embodiment of the present invention, and as shown in fig. 3, the node 30 includes the repeat transmission processing device 32 of any one of the above.
Preferably, the node may include at least one of: macro base stations, micro base stations, pico base stations, femto base stations, low power nodes, relay stations.
In this embodiment, a method for indicating a channel enhancement level is provided, by which the enhancement levels (repeated transmission times) of different channels of different terminals can be finely controlled, so that the overhead of time-frequency resources can be saved, and the spectrum utilization rate of a system can be improved. The method comprises the following steps: the number of times of repeated transmission of the physical channel and/or the message carried by the physical channel is determined according to the application scenario without adopting different methods. In a first-class application scenario, the number of times of repeatedly sending messages carried by a physical channel and/or a physical channel is at least determined by first-class configuration information (the same as the information carried by the configuration information); in the second type of application scenario, the number of times of repeatedly sending the physical channel and/or the message carried by the physical channel is determined by at least the configuration information of the first type level and the first type adjustment information (the same as the information carried by the adjustment message).
Wherein the first class level (same as the channel enhancement level) may be one of: a coverage enhancement level; a physical channel repeat transmission level; physical random access channel coverage enhancement grade; the physical random access channel repeats the transmission rank.
It should be noted that, the configuration information of the first class level may include at least one of the following: the number information of the first class grades configured by the first class nodes and the index information of the first class grades configured by the first class nodes.
Preferably, the maximum value of the number of the first class classes that the first class node can configure may be different in Frequency Division Duplex (FDD) and Time Division Duplex (TDD) modes. For example, the maximum number of classes of the first type that the first type node can configure in FDD mode is larger than in TDD mode.
In addition, the first type of application scenario may include at least one of: initiating a random access process; a contention-based random access procedure; the second type node transitions from a radio resource management IDLE state (RRC _ IDLE) to an establishment of a radio resource management CONNECTED state (RRC _ CONNECTED) with the first type node.
In a first type of application scenario, the physical channel and/or the message carried by the physical channel may include at least one of: a physical uplink shared channel; a physical uplink control channel; a physical downlink control shared channel; a physical downlink control channel; enhancing a physical downlink control channel; a random access response message; an RRC connection reestablishment request message; an RRC connection setup request message; randomly accessing a conflict resolution message;
in the first type of application scenario, the determination of the number of times of repeated transmission of the physical channel and/or the message carried by the physical channel by at least the configuration information of the first type of level may include: predefining one or more physical channels and/or a mapping table of the repeated sending grade and the first grade of the message carried by the physical channels; selecting a mapping table supporting the number of the first class levels from the mapping tables according to the number information of the first class levels in the configuration of the first class levels; in the selected mapping table, determining a repeated sending level index of the physical channel and/or the message carried by the physical channel according to the index of the first level; and determining the repeated sending times of the messages carried by the physical channel and/or the physical channel according to the repeated sending grade index of the messages carried by the physical channel and/or the physical channel.
The determining the number of times of the repeated transmission of the message carried by the physical channel and/or the physical channel according to the repeated transmission level index of the message carried by the physical channel and/or the physical channel may include at least one of: when the repeated transmission grade index indicates the repeated transmission times of the message carried by one physical channel and/or the physical channel, determining the repeated transmission times according to the repeated transmission grade index of the message carried by the physical channel and/or the physical channel; when the repeated transmission level index indicates the repeated transmission times of the messages carried by various physical channels and/or physical channels, the selection information of the repeated transmission times of the messages carried by the physical channels and/or physical channels is indicated in the configuration information of the first type level by the first type node or is sent to the second type node through signaling.
The second type of application scenario may include at least one of: after a second-class node and a first-class node establish a radio resource management (RRC) connection state; in a second type of application scenario, the physical channel and/or the message carried by the physical channel may include at least one of: a Physical Random Access Channel (PRACH), a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), and an Enhanced Physical Downlink Control Channel (EPDCCH).
Preferably, in the second type of application scenario, the determining, by at least the configuration information of the first type class and the first type adjustment information, of the number of times of repeated sending of the physical channel and/or the message carried by the physical channel may include: predefining one or more physical channels and/or a mapping table of the repeated sending grade and the first grade of the message carried by the physical channels; selecting a mapping table supporting the number of the first class levels from the defined mapping tables according to the number information of the first class levels in the configuration of the first class levels; in the selected mapping table, determining a repeated sending level index of the physical channel and/or the message carried by the physical channel according to the index of the first level; determining the repeated sending times of the messages carried by the physical channel and/or the physical channel according to the repeated sending grade index of the messages carried by the physical channel and/or the physical channel; the number of times of repeated transmission of the physical channel and/or the message carried by the physical channel is adjusted by the first type of adjustment information, wherein the first type of adjustment information is used for determining the number of times of repeated transmission of the physical channel and/or the message carried by the physical channel.
The first adjustment information may include the following information: determining an adjustment Step length, Step, of the number of times of repeated sending of the physical channel and/or the message carried by the physical channel; determining an adjustment level of the number of repeated sending times of a physical channel and/or a message carried by the physical channel, A; wherein A is an integer and can be a negative integer; according to the adjustment Step length and the adjustment level A, the adjustment information of the number of times of repeatedly sending the message carried by the physical channel and/or the physical channel is determined, and the adjustment information can be obtained by adopting the following method: the adjustment information is a Step.
And determining the number of times of repeatedly sending the messages carried by the physical channel and/or the physical channel after adjustment, and obtaining the message by adopting the following method: determining the number of times of repeated transmission of the message carried by the physical channel and/or the physical channel, namely determining the number of times of repeated transmission of the message carried by the physical channel and/or the physical channel + the adjustment information.
Determining that the physical channel comprises at least one of the physical channel and/or a message carried by the physical channel in the second type of application scene; when the second type node receives the unicast and sends the first type level information, updating according to the indicated first type level information; when the second type node receives the repeated sending level information of the unicast sending physical channel and/or the message carried by the physical channel, the repeated sending level information is updated according to the indication of the repeated sending level information.
Wherein the indication of the system configuration may include at least one of: predefined by a standard; predefined by the network; configured by a standard; configured by a network; configured by the network upper layers.
The first type node may be at least one of: macro base stations (macro cells), micro base stations (microcells), pico base stations (picocells), femto base stations (femtocells), which are also called home base stations, Low Power Nodes (LPNs), and relays (relays). The second type node may be at least one of the following: one or more terminals; one or more groups of terminals. Wherein the terminal may be at least one of: a human-to-human communication terminal (H2 HUE), a machine-to-machine communication terminal (M2 MUE), a machine type communication terminal (mtcu), and a device-to-device communication terminal (D2 DUE).
The following description will be made in conjunction with preferred embodiments.
Preferred embodiment 1
In the FDDLTE system, a large number of mtues exist, some MTC terminals may be located in a basement, a corner, or other scenes with poor radio environment, and therefore, uplink and downlink channel coverage enhancement is necessary for such scenes. The mtues requiring coverage enhancement are divided into multiple coverage enhancement levels (CEL for short) according to different coverage enhancement target values (coverageenhancement target), and in the present embodiment, three coverage enhancement levels, including CEL0, CEL1, and CEL2, are configured in the system.
In this embodiment, UE1 is an mtue that needs coverage enhancement, UE1 has a coverage enhancement level of CEL1, and UE1 is in a scenario of an initial access system.
UE1 first establishes downlink synchronization with a base station (e.g., eNB1) in the FDDLTE system and obtains system information, and in this embodiment, UE1 learns from the system information that 3 CELs are supported in the system, which are CEL0, CEL1, and CEL 2.
The FDDLTE system predefines a mapping table of a repetition transmission level and a coverage enhancement level of a plurality of physical channels and/or messages carried by the physical channels. The UE1 selects a mapping Table supporting 3 CELs from the mapping tables, for example, Table 1.
The UE1 finds the physical channel and/or the repeated transmission level of the message carried by the physical channel, which is required by the initial random access system procedure corresponding to the CEL1, in the selected mapping Table 1. The physical channel and/or the message carried by the physical channel required by the initial random access system procedure may include at least one of the following: a Physical Random Access Channel (PRACH), a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), and an Enhanced Physical Downlink Control Channel (EPDCCH); a random access response message; an RRC connection reestablishment request message; an RRC connection setup request message; random access collision resolution message.
In the system, it is defined that each physical channel and/or the repeat transmission level of the message carried by the physical channel only corresponds to one repeat transmission number, and then the UE1 knows the repeat transmission number.
Finally, the UE1 completes the initial random access procedure according to the known physical channel and/or the number of times of repeated transmission of the message carried by the physical channel and according to the predefined procedure.
In addition to this embodiment, the repeated transmission level of the message defined in the system and/or carried by the physical channel may correspond to multiple repeated transmission times, and the eNB1 specifically selects which repeated transmission times to transmit to the UE1 through system information transmission or through unicast signaling; the following examples are given.
When the eNB1 transmits the system information, all UEs (including UE1) that receive the system information need to configure the physical channel and/or the message carried by the physical channel according to the repetition number indicated by the eNB 1; when the eNB1 sends through unicast signaling, then only the UE1 needs to configure the physical channels and/or the messages carried by the physical channels according to the number of repetitions indicated by the eNB 1.
Preferred embodiment 2
In the TDDLTE system, there are a large number of mtues, some MTC terminals may be located in a basement, a corner, or other scenes with poor radio environment, and therefore, uplink and downlink channel coverage enhancement is necessary for such scenes. The mtues requiring coverage enhancement are divided into multiple coverage enhancement levels (CEL for short) according to different coverage enhancement target values (coverageenhancement targets), and in the present embodiment, the system is configured with at most three coverage enhancement levels, including CEL0, CEL1, and CEL 2.
The UE1 knows from the serving base station (e.g., eNB1) in the TDDLTE system that 2 CELs are supported in the system, namely CEL0 and CEL1, respectively.
In this embodiment, UE1 is an mtcu that requires coverage enhancement, and the coverage enhancement level of UE1 is CEL1, and UE1 is in transition from radio resource management IDLE state (RRC _ IDLE) to radio resource management CONNECTED state (RRC _ CONNECTED);
the TDDLTE system defines a mapping table of the retransmission level and the coverage enhancement level of a plurality of physical channels and/or messages carried by the physical channels in advance. The UE1 selects a mapping Table supporting 2 CELs from the mapping tables, for example, Table 2;
the UE1 finds, in the selected Table2, the physical channel and/or the retransmission level of messages carried by the physical channel that are required for the CEL1 to transition from the radio resource management IDLE state (RRC _ IDLE) to the radio resource management CONNECTED state (RRC _ CONNECTED). The physical channel and/or the message carried by the physical channel required by the initial random access system procedure may include at least one of the following: the physical uplink control channel comprises PRACH, PUSCH, physical uplink control channel PUCCH, PDSCH, PDCCH, EPDCCH, random access response message, RRC connection reestablishment request message and random access conflict solution message.
In the system, it is defined that each physical channel and/or the repeat transmission level of the message carried by the physical channel only corresponds to one repeat transmission number, and then the UE1 knows the repeat transmission number.
Finally, the UE1 completes the transition from the radio resource management IDLE state (RRC _ IDLE) to the radio resource management CONNECTED state (RRC _ CONNECTED) according to a predefined procedure.
Preferred embodiment 3
In the TDDLTE system, there are a large number of mtues, some MTC terminals may be located in a basement, a corner, or other scenes with poor radio environment, and therefore, uplink and downlink channel coverage enhancement is necessary for such scenes. The mtues requiring coverage enhancement are divided into multiple coverage enhancement levels (CEL for short) according to different coverage enhancement target values (coverageenhancement targets), and in the present embodiment, the system is configured with at most three coverage enhancement levels, including CEL0, CEL1, and CEL 2.
The UE1 knows from the serving base station (e.g., eNB1) in the TDDLTE system that 2 CELs are supported in the system, namely CEL0 and CEL1, respectively.
In this embodiment, the UE1 is an mtcc UE that needs coverage enhancement, the coverage enhancement level of the UE1 is CEL1, and the UE1 is in a radio resource management CONNECTED state (RRC _ CONNECTED) and has traffic to send;
the TDDLTE system defines a mapping table of the retransmission level and the coverage enhancement level of a plurality of physical channels and/or messages carried by the physical channels in advance. The UE1 selects a mapping Table supporting 2 CELs from the mapping tables, for example, Table 2.
The UE1 finds the physical channel and/or the repeat transmission level of the message carried by the physical channel required for the service transmission corresponding to the CEL1 in the selected Table 2. The physical channel and/or the message carried by the physical channel required for service transmission may include at least one of the following: PRACH, PUSCH, PUCCH, PDSCH, PDCCH, EPDCCH.
In the system, it is defined that the repeated transmission level of the message carried by each physical channel and/or physical channel only corresponds to one repeated transmission frequency, and then the UE1 knows the repeated transmission frequency after knowing the repeated transmission level of the message carried by the physical channel and/or physical channel required by service transmission.
Before the service transmission, for example, if the UE1 receives the adjustment information of the number of repeated PUSCH transmissions, the number of repeated PUSCH transmissions needs to be updated according to the adjustment information.
Wherein the adjustment information may include: the Step length of the adjustment of the repeated sending times is Step; adjusting the level, A; according to the adjustment Step size Step and the adjustment level a, the adjustment times of the PUSCH channel can be obtained as follows: adjusting times are A Step; and the updated repeated transmission times of the PUSCH are equal to the original repeated transmission times of the PUSCH plus the adjustment times.
Further, the UE1 completes service transmission according to a predetermined flow according to the obtained number of times of repeated transmission of the physical channel and/or the message carried by the physical channel and the updated number of times of repeated transmission of the PUSCH.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A method for processing repeat transmission, comprising:
determining an application scene for sending a physical channel and/or a message carried by the physical channel;
and sending a configuration message to a second node in the determined application scene, wherein the second node determines the repeated sending times of the physical channel and/or the message carried by the physical channel according to the configuration message.
2. The method of claim 1,
the application scenario comprises a first application scenario, wherein the first application scenario comprises one of: an initial random access procedure of the second node; a contention-based random access procedure of the second node; the second node transitioning from a radio resource control IDLE state, RRC IDLE, to an establish radio resource control CONNECTED state, RRC CONNECTED, with the first node; or,
the application scenario comprises a second application scenario, wherein the second application scenario comprises: the second node has established a radio resource control, RRC, connected state with the first node.
3. The method of claim 1,
the physical channel comprises at least one of: a physical random access channel; a physical uplink shared channel; a physical uplink control channel; a physical downlink control shared channel; a physical downlink control channel; enhancing a physical downlink control channel;
the messages carried by the physical channel include at least one of: a random access response message; a radio resource control, RRC, connection reestablishment request message; a radio resource control, RRC, connection establishment request message; random access collision resolution message.
4. The method of claim 1,
the configuration message carries the quantity information of the second node channel enhancement levels and the level index information repeatedly sent by the second node;
wherein the number information of the second node channel enhancement levels is used for selecting a mapping table supporting the number of the second node channel enhancement levels from one or more mapping tables, wherein the one or more mapping tables comprise a correspondence relationship between a repeated transmission level of one or more physical channels and/or messages carried by the physical channels and the channel enhancement levels;
and the second node repeatedly sending the grade index information is used for determining the repeated sending times of the messages carried by the physical channel and/or the physical channel sent by the second node in the selected mapping table.
5. The method of claim 4,
when the second node repeatedly sends the level index to indicate the repeated sending times of the messages carried by one physical channel and/or the physical channel, determining the repeated sending times according to the repeated sending level index of the messages carried by the physical channel and/or the physical channel;
and when the second node repeatedly sends the repeated sending times of the messages carried by the at least two physical channels and/or the physical channels, determining the repeated sending times according to the selection information of the repeated sending times of the messages carried by the physical channels and/or the physical channels sent to the second node.
6. The method of claim 4, wherein the channel enhancement level comprises one of:
a coverage enhancement level; a physical channel repeat transmission level; physical random access channel coverage enhancement grade; the physical random access channel repeats the transmission rank.
7. The method of claim 6, wherein a maximum value of the number of channel enhancement levels for frequency division duplex, FDD, mode is different from a maximum value of the number of channel enhancement levels for time division duplex, TDD, mode.
8. The method according to claim 2, wherein, in case that the application scenario is the second application scenario, after sending the configuration message to the second node, further comprising:
and sending an adjusting message for adjusting the repeated sending times indicated by the configuration message to the second node.
9. The method of claim 8, wherein the adjustment message carries the following information:
the adjustment step length for adjusting the repeated sending times and the adjustment level for adjusting the repeated sending times, wherein the product of the adjustment step length and the adjustment level represents the adjusted repeated sending times.
10. A repeat transmission processing apparatus, comprising:
the first determining module is used for determining an application scene of a message carried by a physical channel and/or the physical channel;
a first sending module, configured to send a configuration message to a second node in the determined application scenario, where the second node determines, according to the configuration message, a number of times of repeated sending of the physical channel and/or the message carried by the physical channel.
11. The apparatus of claim 10, wherein the first sending module is further configured to send the first message to the second sending module
And sending an adjusting message for adjusting the repeated sending times indicated by the configuration message to the second node under the condition that the application scene is that the second node and the first node already establish a Radio Resource Control (RRC) connection state.
12. The apparatus according to any of claims 10 or 11, wherein the second node comprises at least one of:
one or more terminals; one or more groups of terminals.
13. The apparatus of claim 12, wherein the terminal comprises at least one of:
a human-to-human communication terminal H2HUE, a machine-to-machine communication terminal M2MUE, a machine type communication terminal mtue, a device-to-device communication terminal D2 DUE.
14. A node, characterized in that it comprises the apparatus of any of claims 10 to 13.
15. The node of claim 14, wherein the node comprises at least one of:
macro base stations, micro base stations, pico base stations, femto base stations, low power nodes, relay stations.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854718.7A CN105812092A (en) | 2014-12-31 | 2014-12-31 | Repeated transmission processing method, device and node |
| PCT/CN2015/085797 WO2016107169A1 (en) | 2014-12-31 | 2015-07-31 | Repeated sending processing method, device and node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854718.7A CN105812092A (en) | 2014-12-31 | 2014-12-31 | Repeated transmission processing method, device and node |
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| CN105812092A true CN105812092A (en) | 2016-07-27 |
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| CN201410854718.7A Withdrawn CN105812092A (en) | 2014-12-31 | 2014-12-31 | Repeated transmission processing method, device and node |
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| CN (1) | CN105812092A (en) |
| WO (1) | WO2016107169A1 (en) |
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