CN108024259B

CN108024259B - Transmission point or beam indication and transmission method and device for new generation wireless communication system

Info

Publication number: CN108024259B
Application number: CN201610952770.5A
Authority: CN
Inventors: 谌丽; 陈瑞卡
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-11-02
Filing date: 2016-11-02
Publication date: 2020-01-24
Anticipated expiration: 2036-11-02
Also published as: WO2018082392A1; CN108024259A

Abstract

The invention discloses a method and a device for indicating and transmitting transmission points or beams of a new generation wireless communication system, wherein the method comprises the following steps: a network side determines a transmission point or a beam for providing signaling and/or data transmission for a terminal in a cell; and in the random access process, sending a random access response to the terminal, wherein the random access response carries the information of the transmission point or the beam. In the random access process, a terminal receives a random access response, wherein the random access response carries information of a transmission point or a beam for providing signaling and/or data transmission for the terminal in a cell; and the terminal performs TRP/Beam level transmission according to the transmission point or the Beam. By adopting the invention, the air interface resource overhead can be reduced, and the system capacity can be improved; the power consumption of a network side and a terminal is reduced; the method can perform accurate channel estimation measurement and accurate power control, and is favorable for improving the reliability of signaling and data transmission.

Description

Transmission point or beam indication and transmission method and device for new generation wireless communication system

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for indicating and transmitting transmission points or beams in a new generation wireless communication system.

Background

Fig. 1 is a schematic diagram of a new generation wireless communication system architecture, and a network architecture introduced in the new generation wireless communication system (referred to as NG or 5G system) is shown in fig. 1. A network side node gb (next generation base station) may include one or more Transmission points TRP (Transmission Reception points), and each Transmission Point may perform air interface signaling and data Transmission with a terminal through different beams (beams). That is, in a cell under one gNB, the TRP is a network-side transmission point directly performing air interface transmission with a terminal, the TRP is transmitted with the terminal in a manner of communicating with the terminal through different beams, and the beams may be omnidirectional (360 degrees) or directional (less than 360 degrees, and may be tens or tens of degrees). One or more TRP/beams can serve one terminal at the same time for signaling and data transmission.

For UEs (User Equipment) that reside in a cell and do not need to interact signaling and data with the network side (generally idle UEs and possibly inactive UEs), generally, only cell-level information including one or more TRPs/beams and cell-level measurements need to be received. Cell-level information, such as cell-level system messages, is sent synchronously via all or a portion of the transmission points or beams within a cell; the reference signals for cell-level measurements are also sent synchronously at all or a portion of the transmission points or beams within the cell. The design ensures that the UE which does not need data transmission only needs to identify the cell instead of accurately identifying the TRP/Beam, and avoids unnecessary signaling overhead, such as the signaling overhead of moving between the TRP/Beam.

However, the prior art has at least one of the following disadvantages: under specific conditions, the method can increase the air interface resource overhead and reduce the system capacity; or the power consumption of the network side and the terminal is increased; or because the terminal cannot identify the TRP/Beam, the terminal cannot perform accurate channel estimation measurement and accurate power control, which is not beneficial to improving the reliability of signaling and data transmission.

Disclosure of Invention

The invention provides a transmission point or Beam indicating and transmitting method and device of a new generation wireless communication system, which are used for enabling UE to identify TRP/Beam when signaling and data transmission are required to be carried out with a network side, thereby reducing resource overhead in the subsequent transmission process, increasing system capacity and improving transmission reliability.

The embodiment of the invention provides a transmission point or beam indicating method in a new generation wireless communication system, which comprises the following steps:

a network side determines a transmission point or a beam for providing signaling and/or data transmission for a terminal in a cell;

and in the random access process, sending a random access response to the terminal, wherein the random access response carries the information of the transmission point or the Beam.

In implementation, a transmission point or beam for providing signaling and/or data transmission to the terminal in the cell is a transmission point of Msg1 sent by the terminal, or an uplink and downlink beam pair corresponding to an uplink beam of Msg 1;

or, all transmission points or beams within a cell.

In implementation, the random access response carries information of the transmission point or beam, and is sent together with a specific reference signal of the transmission point or beam when the random access response is sent, where the specific reference signal is used to enable the terminal to determine the transmission point or beam after detecting the specific reference signal.

In implementation, carrying the unique reference signal means scrambling the random access response by using an RA-RNTI, which is obtained by calculating a transmission point or beam identifier of the Msg1 transmission as an input parameter.

In an implementation, the method further comprises the following steps:

and receiving the Msg1 sent by the terminal, wherein the Msg1 is the Msg1 sent in the cell according to the random access resource configuration after the terminal acquires the cell-level random access resource configuration from the received system message, and the system message is sent by the network side in a mode that all or part of transmission points or beams of the cell are synchronously sent.

In an implementation, the method further comprises the following steps:

allocating resources for uplink transmission of a terminal for a particular transmission point or beam in Msg2, and sending a contention resolution message Msg4 on the transmission point or beam;

alternatively, the terminal is allocated uplink transmission resources for all transmission points or beams in the Msg2, and synchronously sends a contention resolution message Msg4 on all or a part of the transmission points or beams in the cell.

In an implementation, the information of the transmission point or beam carried in the random access response includes one or a combination of the following information:

TRP/Beam level reference signal information, TRP/Beam ID, TRP/Beam level random access resource PRACH information and TRP/Beam level preamble sequence information.

In an implementation, the random access response is a random access response Msg2 sent synchronously at all or a part of transmission points or beams in a cell.

The embodiment of the invention provides a transmission method in a new generation wireless communication system, which comprises the following steps:

in the random access process, a terminal receives a random access response, wherein the random access response carries information of a transmission point or a beam for providing signaling and/or data transmission for the terminal in a cell;

determining the transmission point or beam according to the random access response;

and the terminal performs TRP/Beam level transmission according to the transmission point or the Beam.

In an implementation, the method further comprises the following steps:

after acquiring the cell-level random access resource configuration from the received system message, the terminal sends Msg1 in the cell according to the random access resource configuration, wherein the system message is sent by adopting a mode of synchronously sending all or part of transmission points or beams of the cell.

In an implementation, the method further comprises the following steps:

when the terminal sends uplink transmission on the uplink resource allocated in the Msg2, and the uplink resource allocation is specific to a specific transmission point or beam, receiving a contention resolution message Msg4 according to the information of the transmission point or beam carried in the random access response;

alternatively, when the terminal transmits uplink transmission on the uplink resource allocated in the Msg2 and the uplink resource allocation is for all transmission points or beams, the terminal receives the contention resolution message Msg4 transmitted by all transmission points or beams in the cell in synchronization.

In practice, the determination of the transmission point or beam based on the random access response is determined based on the detection of a reference signal specific to the transmission point or beam transmitted together with the random access response when the random access response is transmitted.

In an implementation, the method further comprises the following steps:

a terminal which does not initiate random access acquires information of all transmission points or beams in a cell through a random access response message, and detects the currently working transmission points or beams, or a terminal which fails random access detects the currently working transmission points or beams by using the received information of all transmission points or beams in the cell;

msg1 is sent on the detected transmission points or beams.

In implementation, the random access response carries information of the transmission point or beam, and when the transmitted random access response is transmitted together with a specific reference signal of the transmission point or beam, the transmission point or beam is determined according to the detected specific reference signal.

In an implementation, the information of the transmission point or beam includes one or a combination of the following information:

The embodiment of the invention provides a transmission point or beam indicating device in a new generation wireless communication system, which comprises:

a network side determining module, configured to determine, at a network side, a transmission point or beam for providing signaling and/or data transmission to a terminal in a cell;

and the sending module is used for sending a random access response to the terminal in the random access process, wherein the random access response carries the information of the transmission point or the Beam.

In implementation, the network side determining module is further configured to determine that a transmission point or beam in the cell providing signaling and/or data transmission for the terminal is a transmission point of Msg1 sent by the terminal or an uplink and downlink beam pair corresponding to an uplink beam of Msg 1; or, all transmission points or beams within a cell.

In an implementation, the sending module is further configured to send the random access response together with a specific reference signal of the transmission point or beam when the random access response carries the information of the transmission point or beam, where the specific reference signal is used to enable the terminal to determine the transmission point or beam after detecting the specific reference signal.

In an implementation, the sending module is further configured to scramble the random access response by using an RA-RNTI when the specific reference signal is carried, where the RA-RNTI is obtained by calculation using a transmission point or a beam identifier of the Msg1 transmission as an input parameter.

In an implementation, the method further comprises the following steps:

a network side receiving module, configured to receive Msg1 sent by the terminal, where the Msg1 is Msg1 sent in a cell according to random access resource configuration after the terminal acquires the cell-level random access resource configuration from a received system message, and the system message is sent by the network side in a manner that all or a part of transmission points or beams of the cell are sent synchronously.

In an implementation, the sending module is further configured to allocate, in the Msg2, resources for uplink transmission of a specific transmission point or beam for the terminal, and send a contention resolution message Msg4 on the transmission point or beam; alternatively, the terminal is allocated uplink transmission resources for all transmission points or beams in the Msg2, and synchronously sends a contention resolution message Msg4 on all or a part of the transmission points or beams in the cell.

The embodiment of the invention provides a transmission device in a new generation wireless communication system, which comprises:

a terminal side receiving module, configured to receive a random access response by a terminal in a random access process, where the random access response carries information of a transmission point or a beam for providing signaling and/or data transmission to the terminal in a cell;

a terminal side determining module, configured to determine the transmission point or the beam according to the random access response;

and the transmission module is used for carrying out TRP/Beam level transmission by the terminal according to the transmission point or the Beam.

In an implementation, the method further comprises the following steps:

and the terminal side sending module is used for sending the Msg1 in the cell according to the random access resource configuration after the terminal acquires the cell-level random access resource configuration from the received system message, wherein the system message is sent by adopting a mode of synchronously sending all or part of transmission points or beams of the cell.

In an implementation, the terminal-side receiving module is further configured to send an uplink transmission on an uplink resource allocated in the Msg2 by the terminal, where the uplink resource allocation is for a specific transmission point or beam, and receive a contention resolution message Msg4 according to information of the transmission point or beam carried in the random access response; alternatively, when the terminal transmits uplink transmission on the uplink resource allocated in the Msg2 and the uplink resource allocation is for all transmission points or beams, the terminal receives the contention resolution message Msg4 transmitted by all transmission points or beams in the cell in synchronization.

In an implementation, the terminal side determining module is further configured to, when determining the transmission point or beam according to the random access response, determine the transmission point or beam according to a detection of a reference signal specific to the transmission point or beam transmitted together with the random access response when transmitting the random access response.

In implementation, the terminal side determining module is further configured to obtain information of all transmission points or beams in the cell through a random access response message at a terminal that does not initiate random access, and detect a currently operating transmission point or beam, or detect a currently operating transmission point or beam at a terminal that fails random access by using the received information of all transmission points or beams in the cell;

further comprising:

and a terminal side transmitting module, configured to transmit the Msg1 on the detected transmission point or beam.

In implementation, the terminal side determining module further determines the transmission point or beam according to the detected specific reference signal when determining that the random access response carries the information of the transmission point or beam and when the transmitted random access response is transmitted together with the specific reference signal of the transmission point or beam.

The invention has the following beneficial effects:

in the technical solution provided in the embodiment of the present invention, after determining a transmission point or Beam for providing signaling and/or data transmission to a terminal in a cell, that is, in a random access process, a random access response is fed back to the terminal, and the random access response carries information of the transmission point or Beam, so that the terminal side can identify TRP/Beam when the terminal side needs to perform signaling and data transmission with the network side.

And determining the transmission point or Beam according to the random access response on the terminal side, and performing TRP/Beam level transmission by using the transmission point or Beam subsequently.

During subsequent Msg3 and Msg4 or subsequent signaling and data transmission, the terminal can identify TRP/Beam according to information carried in Msg2 on the network side, and perform subsequent Msg3 and Msg4 or subsequent signaling and data transmission by using the TRP/Beam, so that signaling and data transmission for UE by using TRP/Beam in all or multiple cells in a synchronous mode is not required, air interface resource overhead is reduced, and system capacity is increased; the power consumption of a network side and a terminal is reduced; and the terminal can identify the TRP/Beam, so that accurate channel estimation measurement and accurate power control can be carried out, and the improvement of signaling and data transmission reliability is facilitated.

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 specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a diagram illustrating a new generation wireless communication system architecture in the prior art;

FIG. 2 is a diagram illustrating a contention random access procedure according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating a non-contention random access procedure according to an embodiment of the present invention;

fig. 4 is a diagram illustrating a MAC RAR format according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a format of a rollback indicator header according to an embodiment of the present invention;

fig. 6 is a diagram illustrating a format of a random access response message according to an embodiment of the present invention;

fig. 7 is a flowchart illustrating an implementation of a TRP indication method in a network-side new-generation wireless communication system according to an embodiment of the present invention;

fig. 8 is a flow chart illustrating an implementation of a transmission method in a new generation wireless communication system at a terminal side according to an embodiment of the present invention;

fig. 9 is a diagram illustrating a random access response message organization scheme according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating a random access response PDU structure according to an embodiment of the present invention;

fig. 11 is a diagram illustrating a random access response message organization scheme according to a second embodiment of the present invention;

FIG. 12 is a diagram illustrating a structure of a second random access response PDU in accordance with an embodiment of the present invention;

FIG. 13 is a diagram illustrating a random access procedure according to an embodiment of the present invention;

FIG. 14 is a diagram illustrating a random access procedure according to a second embodiment of the present invention;

FIG. 15 is a diagram illustrating a third random access procedure according to an embodiment of the present invention;

FIG. 16 is a diagram illustrating a four random access procedure according to an embodiment of the present invention;

fig. 17 is a diagram illustrating a five random access procedure according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a transmission point or beam indicating device in a new generation wireless communication system according to an embodiment of the present invention;

fig. 19 is a schematic diagram of a transmitting device in a new generation wireless communication system according to an embodiment of the present invention;

FIG. 20 is a diagram illustrating a network node structure according to an embodiment of the present invention;

fig. 21 is a schematic diagram of a terminal structure in an embodiment of the present invention.

Detailed Description

The inventor notices in the process of invention that:

for a UE (generally, a connected UE, or an inactiveuse UE) performing signaling and data interaction with a network side, if a cell-level signaling and data transmission mode in LTE (Long Term Evolution) is adopted, that is, the UE does not recognize TRP/Beam, signaling interaction between the UE and a cell needs to be completed through all TRP/beams in the cell, specifically, downlink data transmission to the UE needs all or many TRP/beams in the cell to be synchronously transmitted, and uplink data transmission needs all or many TRP/beams in the cell to be synchronously received. In this way, the overhead of air interface resources is increased, and the system capacity is reduced; secondly, the power consumption of a network side and a terminal is increased; thirdly, the terminal cannot identify the TRP/Beam, and cannot perform accurate channel estimation measurement and accurate power control, which is not beneficial to improving the reliability of signaling and data transmission.

The following describes the random access procedure and the problems involved in it in detail as follows:

the random access of the LTE system is divided into two types, contention random access and non-contention random access. The process is as follows:

contention random access is used for six purposes: the terminal is initially accessed; RRC (Radio Resource Control) connection reestablishment; switching; downlink data arrives in an RRC connected state in an asynchronous state; uplink data arrives in the RRC connected state; positioning in RRC connected state.

Fig. 2 is a schematic diagram of a contention random access process, as shown in fig. 2, the contention random access process mainly includes four steps:

msg1: the UE selects a random access preamble (random access preamble) and a PRACH (Physical random access Channel) resource and transmits the selected random access preamble to the base station using the PRACH resource.

Msg2: the base station receives the preamble, calculates a Timing Advance (TA), and sends a random access response to the UE, where the random access response includes the timing advance information, an uplink scheduling information (UL grant) for the Msg3, and a Temporary C-RNTI (Cell-Radio Network Temporary Identifier) allocated by the Network side. A Physical Downlink Control Channel (PDCCH) carrying the Msg2 scheduling message is scrambled by using Random Access-Radio Network Temporary Identity (RA-RNTI), and the RA-RNTI is uniquely corresponding to a time-frequency resource for transmitting the Msg1 in a 10ms window; in addition, the Msg2 also carries a preamble ID, and the UE determines that the Msg2 corresponds to the Msg1 sent by the UE through the RA-RNTI and the preamble ID.

Msg3: scheduled transmission, the UE sends uplink transmission on the UL grant specified by Msg2, and the content of uplink transmission is different for different random access reasons Msg3, for example, for initial access, Msg3 transmits an RRC connection establishment request.

Msg4: a Contention Resolution message, the UE may determine whether the random access is successful according to the Msg 4. For the initial access UE, after the competition resolving is successful, the temporary C-RNTI is automatically converted into the unique UE identity C-RNTI of the UE in the cell.

Fig. 3 is a schematic diagram of a non-contention random access process, where the non-contention random access is used for handover, downlink data arrival, positioning, and uplink timing acquisition. As shown in fig. 3, the method mainly comprises three steps:

msg 0: the base station allocates a dedicated preamble for non-contention random access and a PRACH resource used by random access to the UE.

Msg1: and the UE sends the appointed special preamble to the base station on the appointed PRACH resource according to the instruction of the Msg 0. And after receiving the Msg1, the base station calculates an uplink timing advance TA according to the Msg 1.

Msg2: and the base station sends a random access response to the UE, wherein the random access response comprises timing advance information and a subsequent uplink transmission resource allocation (UL grant), and the timing advance is used for the timing relation of the subsequent uplink transmission of the UE.

Fig. 4 is a schematic diagram of a MAC RAR format, and as shown in the figure, a format of a Random Access Response packet Data Unit MAC RAR PDU (MAC: Media Access Control; RAR: Random Access Response; PDU: Protocol Data Unit) in the LTE system is as follows:

random access response header: RAPID (Random Preamble ID) is used to indicate ID of Preamble received by the base station, E is used to indicate whether there is another Random access response header subsequently. The UE identifies whether to respond to the preamble sent by the UE through the RAPID, and identifies the time-frequency resource position sent by the preamble through identifying the RA-RNTI (the numerical value of the RA-RNTI is calculated and obtained through the time-frequency resource position sending the preamble) scrambling the MAC RAR PDU. And the UE combines the RA-RNTI and the RAPID to finally recognize that the MAC RAR PDU is a random access response sent by the UE.

Fig. 5 is a schematic diagram of a format of a Backoff indicator header, as shown in the figure, BI (Backoff Indication) is used for indicating a delay parameter for initiating a next random access after a random access failure of a UE. T is used to indicate whether a subsequent BI or RAPID.

Fig. 6 is a schematic diagram of a format of a random access response message, as shown in the figure, the random access response message: the left part is the regular random access response, and the right part is the extended random access response

In a new generation wireless communication system, because a UE residing in a cell and not needing to perform signaling and data interaction with a network side only knows cell-level information, the initially accessed UE has no TRP/Beam information and can only perform random access through the cell-level information and resources, so that the UE sending Msg1 is received by all or a part of transmission points or beams in the cell and can be effectively identified by the network side, and the network side sends a random access response Msg2 to the UE through the TRP/Beam in the cell in a synchronous manner. Subsequent Msg3, Msg4 are also sent in a intra-cell TRP/Beam synchronized manner. This approach occupies all or most of the TRP/Beam resources within the cell. And, if the TRP/Beam information needs to be determined to solve the aforementioned problem that the UE performs signaling and data transmission with the network side (connected UE), so as to reduce resource overhead and achieve reliable transmission, the initially accessed UE needs to acquire the TRP/Beam information in some way.

In a 5G system, one cell may contain multiple TRPs/beams. If the cell-level signaling and data transmission mode of LTE is adopted, all or a plurality of TRP/beams in the cell are required to carry out signaling and data transmission on the UE in a synchronous mode, and a typical situation is that messages in the random access process are required to be synchronously sent and received by the TRP/beams in the cell. Therefore, the air interface resource overhead is increased, and the system capacity is reduced; secondly, the power consumption of a network side and a terminal is increased; thirdly, the terminal cannot identify the TRP/Beam, and cannot perform accurate channel estimation measurement and accurate power control, which is not beneficial to improving the reliability of signaling and data transmission. Therefore, when the UE needs to perform signaling and data transmission with the network side, the UE needs to be able to identify the TRP/Beam, so as to reduce resource overhead, increase system capacity, and improve transmission reliability.

Based on this, in the scheme provided by the embodiment of the invention, in the random access process, the information of the intra-cell specific transmission unit, such as the information of TRP/Beam, is provided to the terminal through the random access response, and the terminal performs TRP/Beam identification and TRP/Beam level transmission in subsequent transmission according to the information. The following describes embodiments of the present invention with reference to the drawings.

In the description process, the implementation of the terminal and the network side will be described separately, wherein the network side will describe the procedure of indicating TRP/Beam, the terminal side will describe the procedure of identifying TRP/Beam and random access, transmission, and then an example of the implementation of the two in cooperation will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such an explanation does not mean that the two must be implemented in cooperation or separately, and actually, when the terminal and the network are implemented separately, the problems on the terminal side and the network side are solved separately, and when the two are used in combination, a better technical effect is obtained.

Fig. 7 is a schematic flowchart of an implementation of a TRP indication method in a new generation wireless communication system on a network side, where the TRP indication method may include:

step 701, a network side determines a transmission point or beam for providing signaling and/or data transmission for a terminal in a cell;

step 702, in the random access process, sending a random access response to the terminal, where the random access response carries the information of the transmission point or the beam.

Fig. 8 is a schematic flow chart of an implementation of a transmission method in a new generation wireless communication system at a terminal side, as shown in the figure, the method may include:

step 801, in a random access process, a terminal receives a random access response, wherein the random access response carries information of a transmission point or a beam for providing signaling and/or data transmission for the terminal in a cell;

step 802, determining the transmission point or beam according to the random access response;

and step 803, the terminal performs TRP/Beam level transmission according to the transmission point or the Beam.

In implementation, there is an increasing trend towards only Beam discussion for TRP and Beam in the existing standard discussion, but no matter how the TRP and Beam are transmitted, or even the combination of the TRP and Beam, the implementation of the scheme of the present application is not affected, because the scheme of the present application aims to enable the terminal to perform TRP/Beam identification and TRP/Beam level transmission according to the information in subsequent transmission, and there is no effect on the specific transmission mode.

The following describes specific embodiments of the present invention. For simplicity, the transmission point or Beam is simply referred to as TRP/Beam in the description of the implementation.

1. TRP/Beam signaling and/or data transmission.

The first method is as follows: in an implementation, a transmission point or beam for providing signaling and/or data transmission to the terminal in the cell is a transmission point of Msg1 received from the terminal or an uplink and downlink beam pair corresponding to an uplink beam of Msg 1.

In the implementation, the beams are directional, the uplink and downlink beams form a beam pair, and provide uplink and downlink transmission, respectively, and the network side receives the Msg1 through the uplink beam and sends the random access response through the downlink beam. The message in the random access response may be an indication of an uplink and downlink beam pair, or may be an uplink beam or a downlink beam (the beam information is mainly beam ID), which also depends on how to use the following.

Specifically, the TRP/Beam information is TRP/Beam information corresponding to Msg1(preamble) sent by the UE, and the gNB organizes the information into a random access response for the UE after receiving the Msg1 on the TRP/Beam, and sends the information together with other information sent to the UE, such as an uplink timing advance TA, an uplink resource allocation UL grant, and the like. After receiving the information, the UE may perform a subsequent random access procedure and subsequent data transmission on the TRP/Beam indicated by the random access response, that is, perform TRP/Beam level transmission, specifically perform TRP/Beam level transmission, where the TRP/Beam level transmission is performed at a transmission point or transmitted on a certain Beam, and the transmission parameter and characteristic of the corresponding TRP or Beam may be followed during transmission.

Fig. 9 is a schematic diagram of a random access response message organization method, which may be as shown in fig. 9.

Fig. 10 is a schematic diagram of a structure of a mode-random access response PDU, and referring to an LTE random access response format, the constructed random access response PDU may be as shown in fig. 10. The bold part of the figure is new information introduced in the implementation, and the position of TRP/Beam info is not limited to that in the figure. The illustration is only an example, and how many bytes a specific TRP/Beam info occupies can be determined according to the information amount of the information.

The second method comprises the following steps: in an implementation, the transmission points or beams within a cell that provide signaling and/or data transmission to terminals are all transmission points or beams within the cell.

Specifically, the TRP/Beam information indicates all or a portion of the transmission points or Beam information of the cell, such as a position or sequence index indicating a possible receiving TRP/Beam specific RS (reference signal). In this way, all UEs receive the same TRP/Beam information, and even a UE that does not initiate random access or a UE that has unsuccessful random access may receive the random access response to acquire the intra-cell TRP/Beam configuration. The TRP/Beam information control unit may exist independently. After receiving all TRP/Beam information of the cell, the UE detects the currently available TRP/Beam according to the indication of the TRP/Beam information, and uses the detected TRP/Beam to perform subsequent random access process and subsequent data transmission.

Fig. 11 is a schematic diagram of a random access response message organization mode in a second mode, where the random access response message organization mode may be as shown in fig. 11.

Fig. 12 is a schematic diagram of a structure of a mode two random access response PDU, and referring to an LTE random access response format, the constructed random access response PDU may be as shown in fig. 12. The bold part of the figure is new information introduced in the implementation, the position of TRP/Beam info is not limited to that of the lower figure, and T1 is used to indicate whether the following is TRP/Beam info. The illustration is only an example, and how many bytes a particular TRP/Beam info occupies is determined by the amount of information of the information.

The third method comprises the following steps: in the implementation, the transmission point or beam for providing signaling and/or data transmission to the terminal in the cell is a transmission point of Msg1 sent by the terminal or an uplink and downlink beam pair corresponding to an uplink beam of Msg1, and in this manner, an implicit indication is adopted.

In a specific implementation, the random access response carries information of the transmission point or beam, and is sent together with a specific reference signal of the transmission point or beam when the random access response is sent, where the specific reference signal is used to enable the terminal to determine the transmission point or beam after detecting the specific reference signal.

Specifically, in this example, TRP/Beam information is not explicitly carried in random access responses, and for UEs that send Msg1(preamble) under the same TRP/Beam, the gNB may organize the random access responses of these UEs together and send them with the TRP/Beam specific reference signal. After the UE detects the TRP/Beam reference signal, the TRP/Beam information is determined, and the TRP/Beam information is used for carrying out subsequent random access process and subsequent data transmission. In this way, the MAC RAR format and the content contained therein may be substantially the same as that of LTE, but the reference signal transmitted therewith may adopt a new design.

In a specific implementation, carrying a unique reference signal may refer to scrambling the random access response by an RA-RNTI, which is obtained by calculation using a transmission point or beam identity of the Msg1 transmission as an input parameter.

Specifically, the calculation of the RA-RNTI may include: TRP ID/Beam ID, or time-frequency resources, etc., an example of a TRP/Beam specific reference signal is: the random access response under LTE is scrambled by RA-RNTI, the RA-RNTI is obtained by calculating the time-frequency resource position of Msg1, and if the random access response is directly expanded in a scrambling mode based on the RA-RNTI, similar information such as TRP/Beam numbers and the like can be contained in RA-RNTI calculation factors.

2. And transmitting unit TRP/Beam information content in the random access response.

In implementation, the information of the transmission point or beam carried in the random access response may include one or a combination of the following information:

Specifically, the TRP/Beam information content may include one or more of the following, and specifically, how to combine the TRP/Beam signaling and/or data transmission modes may refer to the following:

TRP/Beam level reference signal (e.g., BRS (Beam reference signals) information, which may include reference signal sequence information, time-frequency resource location, reference power, etc.;

TRP/Beam ID, which may be used to identify TRP, Beam, and to generate and identify related sequences (such as BRS, preamble code, etc.);

TRP/Beam level random access resource PRACH (namely, resource for accommodating Msg1 preamble) information, different from cell level random access resource, TRP/Beam level random access resource is invisible and unavailable for idle UE;

TRP/Beam level preamble sequence information.

The following is an example.

In implementation, the random access response is a random access response Msg2 sent by all or a part of transmission points or beams in a cell synchronously, which can be specifically referred to in the first, second, third, fourth and fifth embodiments as related to the Msg 2.

In implementation, in the first, second, third, and fifth embodiments, after acquiring the cell-level random access resource configuration from the received system message, the terminal sends Msg1 in the cell according to the random access resource configuration, where the system message is sent in a manner that all or a part of transmission points or beams of the cell are sent synchronously.

The first embodiment is as follows:

in this example, the gNB indicates TRP/Beam accessed by the UE in the random access response, and the specified TRP/Beam is adopted in the subsequent random access process.

Corresponding to the first TRP/Beam signaling and/or data transmission mode, the TRP/Beam information is TRP/Beam information corresponding to Msg1(preamble) sent by the UE.

Fig. 13 is a schematic diagram of a random access procedure according to an embodiment, as shown in the figure, the UE side may include the following steps:

step 1300: an Essential SI, including cell specific RACH configuration (SFNed transmission) (necessary system messages including cell specific RACH configuration (transmitted in Single Frequency Network manner, i.e. nodes participating in transmission transmit synchronously with the same time-Frequency resource; SFN: Single Frequency Network)).

The UE receives system information, acquires cell level random access resource configuration (including PRACH resource, preamble configuration and the like), and the system information adopts a mode of synchronously sending all or part of transmission points or wave beams of a cell.

Step 1301: msg1: Preamble.

And the UE sends Msg1(preamble) in the cell according to the random access resource configuration.

Step 1302: the Msg2: RAR (including TA, T-CRNTI and TRP/Beam information corresponding to UE send Msg 1) (SFNed transmission).

The UE receives a random access response Msg2 sent by all or a part of transmission points or beams in a cell synchronously, and the mac rar PDU format refers to fig. 9 and 10, and acquires TRP/Beam information from the random access response message.

Step 1303: msg3: Scheduled transmission.

The UE sends an uplink transmission on the uplink resource allocated in Msg2, which may be for a particular TRP/Beam.

Step 1304: msg4: content Resolution (from induced virtual TRP/Beam) (sent from a specific TRP/Beam).

The UE receives a contention resolution message Msg4 according to TRP/Beam information indicated in the random access response, the Msg4 being sent from TRP/Beam accessed by the UE.

That is, in this example, when the terminal transmits uplink transmission on the uplink resource allocated in the Msg2, and the uplink resource allocation is for a specific transmission point or beam, the contention resolution message Msg4 is received according to the information of the transmission point or beam carried in the random access response. Correspondingly, the network side allocates resources for uplink transmission of a specific transmission point or beam for the terminal in the Msg2, and sends a contention resolution message Msg4 on the transmission point or beam.

The network side adopts the corresponding process with the UE side, which is not described herein again.

Example two:

in this example, the gNB indicates the TRP/Beam accessed by the UE in the random access response, and the UE performs subsequent transmission using the designated TRP/Beam after completing the random access.

Corresponding to the first TRP/Beam signaling and/or data transmission mode, the TRP/Beam information is TRP/Beam information corresponding to Msg1(preamble) sent by the UE. The second embodiment is to avoid interference caused by the UE mistakenly using TRP/Beam resources before contention resolution.

Fig. 14 is a schematic diagram of a random access procedure according to an embodiment, as shown in the figure, the UE side may include the following steps:

step 1400: essential SI, including cell specific RACH configuration (SFNed transmission).

Step 1401: msg1: Preamble.

Step 1402: the Msg2: RAR (including TA, T-CRNTI and TRP/Beam information corresponding to UE send Msg 1) (SFNed transmission).

Step 1403: msg3: Scheduled transmission.

And the UE sends uplink transmission on the uplink resource allocated in the Msg2, and TRP/Beam in the uplink transmission cell can be acquired.

Step 1404: msg4: content Resolution (SFNed transmission).

And the UE synchronously sends a competition resolving message Msg4 according to all TRPs/beams in the receiving cell.

That is, in this example, when the terminal transmits uplink transmission on the uplink resource allocated in the Msg2 for all transmission points or beams, the terminal receives the contention resolution message Msg4 transmitted by all transmission points or beams in synchronization in the cell. Correspondingly, the network side allocates uplink transmission resources for all transmission points or beams in the Msg2 for the terminal, and synchronously sends a contention resolution message Msg4 on all or a part of the transmission points or beams in the cell.

After the contention resolution is completed, the UE may perform subsequent signaling and data transmission by using the TRP/Beam information obtained from the random access response Msg 2.

Example three:

in this example, the gNB indicates all TRP/Beam information in the cell, and after the UE sends the Msg1, the UE detects the TRP/Beam in the cell according to all TRP/Beam information in the cell and completes random access.

Corresponding to the second TRP/Beam signaling and/or data transmission mode, the TRP/Beam information is indicated by all or part of transmission point or Beam information of the cell.

Fig. 15 is a schematic diagram of a three random access procedure according to an embodiment, as shown in the figure, the UE side may include the following steps:

step 1500: essential SI, including cell specific RACH configuration (SFNed transmission).

Step 1501: msg1: Preamble.

And the UE sends Msg1(preamble) in the cell according to the cell-level random access resource configuration.

Step 1502: msg2 RAR (including TA, T-CRNTI and all TRP/Beam information in the cell) (SFNedtranssmision).

The UE receives a random access response Msg2 sent by all or a part of transmission points or beams in a cell synchronously, and the mac rar PDU format refers to fig. 11 and 12, acquires all TRP/Beam information in the cell from the random access response message, and detects its own TRP/Beam according to the information.

Step 1503: msg3: Scheduled transmission.

The UE sends the uplink transmission on the uplink resource allocated in the Msg2, and the uplink transmission can be sent only on the TRP/Beam detected by the UE or by using the special configuration of the TRP/Beam where the UE detects the TRP/Beam, such as using the specific reference signal of the TRP/Beam.

Step 1504: msg4: content Resolution (from induced virtual TRP/Beam).

The UE receives a contention resolution message Msg4 according to the detected information of the TRP/Beam, wherein the Msg4 is sent from the TRP/Beam accessed by the UE.

Example four:

in this example, the gNB indicates all TRP/Beam information in the cell in the random access response, and the UE that does not initiate random access or fails to perform random access detects the TRP/Beam where the UE is located through the information and performs random access on the determined TRP/Beam.

Fig. 16 is a schematic diagram of a four random access procedure according to an embodiment, as shown in the figure, the UE side may include the following steps:

step 1600: msg2 RAR (including all TRP/Beam information within a cell) (SFNed transmission).

And the UE detects the Msg2 according to the cell public information to acquire all TRP/Beam information in the cell. Wherein:

the UE which does not initiate random access can set a certain window length to receive the Msg2, obtain all TRP/Beam information in the cell, and detect the TRP/Beam of the current work of the UE according to all TRP/Beam information in the cell. If the UE does not receive the random access response containing TRP/Beam information within the window length, first initiate a cell level Msg1(preamble) in the manner of the fourth embodiment.

And the UE with the random access failure can detect the currently working TRP/Beam by using all TRP/Beam information in the cell carried in the received Msg 2.

That is, a terminal which does not initiate random access acquires information of all transmission points or beams in a cell through a random access response message, and detects a currently working transmission point or beam, or a terminal which fails random access detects a currently working transmission point or beam by using the received information of all transmission points or beams in the cell; msg1 is sent on the detected transmission points or beams.

Step 1601: msg1: Preamble.

And sending Msg1(preamble) on the TRP/Beam according to the TRP/Beam information detected by the UE.

Step 1602: msg2 RAR (including TA, T-CRNTI and all TRP/Beam information in the cell) (SFNedtranssmision).

The UE receives a random access response Msg2 sent by all or a part of transmission points or beams in the cell synchronously, and the mac rar PDU format is shown in fig. 11 and fig. 12. The other implementation mode is that the random access response information carrying all TRP/Beam information in the cell is not multiplexed with the random access response of the UE which has distinguished the TRP/Beam, the random access response information carrying all the TRP/Beam information in the cell is synchronously sent on all the TRP/Beam in the cell, and the random access response aiming at the specific UE is only sent on the TRP/Beam corresponding to the Msg1 sent by the UE.

Step 1603: msg3: Scheduled transmission.

Step 1604: msg4: content Resolution (from induced virtual TRP/Beam).

Example five:

in this example, the random access response message is transmitted together with a reference signal specific to TRP/Beam.

And the TRP/Beam information is implicitly carried corresponding to the third TRP/Beam signaling and/or data transmission mode.

Fig. 17 is a schematic diagram of a five random access procedure according to an embodiment, as shown in the figure, the UE side may include the following steps:

step 1700: essential SI, including cell specific RACH configuration (SFNed transmission).

Step 1701: msg1: Preamble.

Step 1702: the Msg2: RAR (including TA, T-CRNTI and TRP/Beam information corresponding to UE send Msg 1) (SFNed transmission).

The UE receives a random access response Msg2 sent synchronously by all or a part of transmission points or beams in the cell, wherein the random access response message carries TRP/Beam related information, and the random access response message is scrambled by using an RA-RNTI generated by taking TRP/Beam ID as input, for example, the Msg 2. In this way, only the Msg2 random access responses for Msg1 sent by a UE under the same TRP/Beam can be multiplexed and sent in one PDU.

Step 1703: msg3: Scheduled transmission.

Step 1704: msg4: content Resolution (from induced virtual TRP/Beam).

Based on the same inventive concept, embodiments of the present invention further provide a TRP indication apparatus in a new generation wireless communication system and a transmission apparatus in the new generation wireless communication system, and because the principles of solving the problems of these apparatuses are similar to a TRP indication method in the new generation wireless communication system and a transmission method in the new generation wireless communication system, the implementation of these apparatuses may refer to the implementation of the methods, and repeated details are omitted.

Fig. 18 is a schematic structural diagram of a transmission point or beam indicating device in a new generation wireless communication system, which may include:

a network side determining module 1801, configured to determine, in a network side, a transmission point or a beam for providing signaling and/or data transmission to a terminal in a cell;

a sending module 1802, configured to send a random access response to a terminal in a random access process, where the random access response carries information of the transmission point or the Beam.

In an implementation, the method further comprises the following steps:

Fig. 19 is a schematic structural diagram of a transmission device in a new generation wireless communication system, which may include:

a terminal side receiving module 1901, configured to receive a random access response by a terminal in a random access process, where the random access response carries information of a transmission point or a beam for providing signaling and/or data transmission to the terminal in a cell;

a terminal side determining module 1902, configured to determine the transmission point or beam according to the random access response;

a transmission module 1903, configured to perform TRP/Beam level transmission by the terminal according to the transmission point or Beam.

In an implementation, the method further comprises the following steps:

further comprising:

For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.

When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.

Fig. 20 is a schematic structural diagram of a network-side node, as shown in the figure, the network-side node includes:

the processor 2000, which is used to read the program in the memory 2020, executes the following processes:

determining a transmission point or a beam for providing signaling and/or data transmission for a terminal in a cell at a network side;

a transceiver 2010 for receiving and transmitting data under the control of the processor 2000, performing the following processes:

or, all transmission points or beams within a cell.

In an implementation, the method further comprises the following steps:

In fig. 20, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 2000, and various circuits, represented by memory 2020, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 2010 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 2000 is responsible for managing the bus architecture and general processing, and the memory 2020 may store data used by the processor 2000 in performing operations.

Fig. 21 is a schematic structural diagram of a terminal, and as shown in the figure, the terminal includes:

the processor 2100, which is used to read the program in the memory 2120, executes the following processes:

determining the transmission point or beam according to a random access response;

a transceiver 2110 for receiving and transmitting data under the control of the processor 2100, performing the following processes:

In an implementation, the method further comprises the following steps:

msg1 is sent on the detected transmission points or beams.

In FIG. 21, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 2100, and various circuits of the memory, represented by the memory 2120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 2110 may be a plurality of elements including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 2130 may also be an interface to enable external interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 2100 is responsible for managing the bus architecture and general processing, and the memory 2120 may store data used by the processor 2100 in performing operations.

In summary, in the technical solution provided in the embodiment of the present invention, in the random access process, the intra-cell specific transmission unit information, such as TRP/Beam information, is provided to the terminal through the random access response, and the terminal performs TRP/Beam identification and TRP/Beam level transmission in subsequent transmission according to the information.

Three TRP/Beam signaling and/or data transmission modes are also provided in the scheme; the random access process of the UE without TRP/Beam information and the UE with the existing TRP/Beam information is also distinguished.

By adopting the technical scheme provided by the embodiment, the UE can perform TRP/Beam identification in the random access process, and compared with a cell level signaling and data transmission mode, if the message in the random access process needs to be synchronously transmitted and received by all TRP/beams in a cell, the method has the following advantages: firstly, the overhead of air interface resources is increased, and the system capacity is reduced; secondly, the power consumption of a network side and a terminal is increased; thirdly, the terminal cannot identify the TRP/Beam, and cannot perform accurate channel estimation measurement and accurate power control, which is not beneficial to improving the reliability of signaling and data transmission. Therefore, when the UE needs to perform signaling and data transmission with the network side, the UE needs to be able to identify the TRP/Beam, so as to reduce resource overhead, increase system capacity, and improve transmission reliability.

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

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

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

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

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for indicating transmission points or beams in a new generation wireless communication system, comprising:

in the process of random access, sending a random access response to a terminal, wherein the random access response carries information of the transmission point TRP or the Beam so as to indicate the terminal to determine the transmission point or the Beam according to the random access response;

wherein, the information of the transmission point or the beam carried in the random access response includes one or a combination of the following information:

TRP/Beam level reference signal information, TRP/Beam ID, TRP/Beam level random access resource physical random access channel PRACH information and TRP/Beam level preamble sequence information.

2. The method of claim 1, wherein the transmission point or beam within the cell providing signaling and/or data transmission to the terminal is a transmission point of Msg1 received from the terminal, or an uplink and downlink beam pair corresponding to an uplink beam of Msg1 received;

or, all transmission points or beams within a cell.

3. The method of claim 2, wherein the random access response carries information of the transmission point or beam, and is transmitted together with a specific reference signal of the transmission point or beam when the random access response is transmitted, and the specific reference signal is used for enabling the terminal to determine the transmission point or beam after detecting the specific reference signal.

4. The method of claim 3, wherein carrying the unique reference signal refers to scrambling the random access response by a random access radio network temporary identity (RA-RNTI) calculated using a transmission point or beam identity of the transmitted Msg1 as an input parameter.

5. The method of claim 1, further comprising:

6. The method of claim 5, further comprising:

7. The method of claim 1, wherein the random access response is a random access response Msg2 sent synchronously for all or a portion of transmission points or beams within a cell.

8. A method for transmission in a new generation wireless communication system, comprising:

the terminal performs TRP/Beam level transmission according to the transmission point or the Beam;

wherein the information of the transmission point or beam comprises one or a combination of the following information:

9. The method of claim 8, further comprising:

10. The method of claim 9, further comprising:

11. The method of claim 9, wherein determining the transmission point or beam based on the random access response is determined based on a detection of a reference signal specific to the transmission point or beam transmitted with the random access response when the random access response is transmitted.

12. The method of claim 8, further comprising:

msg1 is sent on the detected transmission points or beams.

13. The method of claim 8, wherein the random access response carries information of the transmission point or beam, and the transmission point or beam is determined according to the detected specific reference signal when the transmitted random access response is transmitted together with the specific reference signal of the transmission point or beam.

14. The method of claim 8, wherein the random access response is a random access response Msg2 sent synchronously for all or a portion of transmission points or beams within a cell.

15. A transmission point or beam indicating apparatus in a new generation wireless communication system, comprising:

a sending module, configured to send a random access response to a terminal in a random access process, where the random access response carries information of the transmission point or Beam, so as to instruct the terminal to determine the transmission point or Beam according to the random access response;

16. The apparatus of claim 15, wherein the network-side determining module is further configured to determine a transmission point or beam in the cell providing signaling and/or data transmission to the terminal, the transmission point or beam being a transmission point of Msg1 received from the terminal, or an uplink and downlink beam pair corresponding to an uplink beam of Msg 1; or, all transmission points or beams within a cell.

17. The apparatus of claim 16, wherein the sending module is further configured to send the random access response with a specific reference signal of the transmission point or beam when the random access response carries the information of the transmission point or beam, and the specific reference signal is used for enabling the terminal to determine the transmission point or beam after detecting the specific reference signal.

18. The apparatus of claim 17, wherein the sending module is further configured to scramble the random access response with an RA-RNTI obtained by calculation with a transmission point or beam identity of the send Msg1 as an input parameter when carrying the unique reference signal.

19. The apparatus of claim 15, further comprising:

20. The apparatus of claim 19, wherein the sending module is further configured to allocate resources for uplink transmission for a particular transmission point or beam in Msg2 for the terminal, and send a contention resolution message Msg4 on the transmission point or beam; alternatively, the terminal is allocated uplink transmission resources for all transmission points or beams in the Msg2, and synchronously sends a contention resolution message Msg4 on all or a part of the transmission points or beams in the cell.

21. The apparatus of claim 15, wherein the random access response is a random access response Msg2 sent synchronously for all or a portion of transmission points or beams within a cell.

22. A transmission apparatus in a new generation wireless communication system, comprising:

the transmission module is used for the terminal to carry out TRP/Beam level transmission according to the transmission point or the Beam;

23. The apparatus of claim 22, further comprising:

24. The apparatus of claim 23, wherein the terminal-side receiving module is further configured to receive a contention resolution message Msg4 according to information of a transmission point or beam carried in the random access response when the terminal sends an uplink transmission on an uplink resource allocated in the Msg2 for the specific transmission point or beam; alternatively, when the terminal transmits uplink transmission on the uplink resource allocated in the Msg2 and the uplink resource allocation is for all transmission points or beams, the terminal receives the contention resolution message Msg4 transmitted by all transmission points or beams in the cell in synchronization.

25. The apparatus of claim 23, wherein the terminal-side determining module is further configured to determine, when determining the transmission point or beam based on the random access response, based on a transmission point or beam specific reference signal detection transmitted with the random access response when transmitting the random access response.

26. The apparatus of claim 22, wherein the terminal-side determining module is further configured to obtain information of all transmission points or beams in the cell through a random access response message at a terminal that does not initiate random access, and detect a currently operating transmission point or beam, or detect a currently operating transmission point or beam at a terminal that fails random access by using the received information of all transmission points or beams in the cell;

further comprising:

27. The apparatus of claim 22, wherein the terminal-side determining module further determines the transmission point or beam according to the detected specific reference signal when determining that the random access response carries the information of the transmission point or beam and when the transmitted random access response is transmitted together with the specific reference signal of the transmission point or beam.

28. The apparatus of claim 22, wherein the random access response is a random access response Msg2 sent in synchronization with all or a portion of transmission points or beams within a cell.