CN108289339B

CN108289339B - Method for sending and detecting random access response, base station and user equipment

Info

Publication number: CN108289339B
Application number: CN201710681057.6A
Authority: CN
Inventors: 钱辰; 熊琦; 喻斌; 张英杰
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2017-01-09
Filing date: 2017-08-10
Publication date: 2021-12-24
Anticipated expiration: 2037-08-10
Also published as: CN108289339A; WO2019031671A1

Abstract

The invention discloses a random access response sending and detecting method, which comprises the following steps: acquiring random access channel configuration information, wherein the random access channel configuration information comprises random access response detection window configuration for first-class UE and random access response detection window configuration for second-class UE, the first-class UE has beam reciprocity, and the second-class UE does not have beam reciprocity; and after the UE sends the leader sequence, detecting the random access response according to the beam reciprocity capability of the local terminal and the random access response detection window configuration. Compared with the prior art, the invention adopts different random access response detection configurations and different random access response detection methods according to the difference of the UE beam reciprocity capabilities, thereby avoiding the reduction of the random access performance caused by improper resource configuration and improper detection mode and improving the overall access performance of the communication system.

Description

Method for sending and detecting random access response, base station and user equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, a base station, and a user equipment for sending and detecting a random access response.

Background

A Random Access (RA) procedure is an important step for establishing a communication link between a User Equipment (UE) and a base station in a wireless communication system, and is used for establishing uplink synchronization between the UE and the base station, and the base station allocates an ID for identifying the UE to the UE.

The performance of random access directly affects the user experience. In conventional wireless communication systems, such as LTE and LTE-Advanced, a Random Access procedure is applied to multiple scenarios, such as establishing an initial link, performing cell handover, re-establishing an uplink, and re-establishing an RRC connection, and is divided into Contention-based Random Access (Contention-based Random Access) and non-Contention-based Random Access (Contention-free Random Access) according to whether a user has exclusive use of a preamble sequence resource. In contention-based random access, in the process of trying to establish uplink, each user selects a preamble sequence from the same preamble sequence resource, and it may happen that a plurality of users select the same preamble sequence to send to a base station, so a collision resolution mechanism is an important research direction in random access, how to reduce collision probability and how to quickly resolve an occurred collision, and is a key index affecting random access performance.

The contention-based random access procedure in LTE-a is divided into four steps, as shown in fig. 1. In the first step, the user randomly selects a leader sequence from the leader sequence resource pool and sends the leader sequence to the base station. The base station carries out correlation detection on the received signal so as to identify a leader sequence sent by a user; in the second step, the base station sends a Random Access Response (RAR) to the user, wherein the RAR includes a Random Access preamble sequence Identifier, a timing advance command determined according to the time delay estimation between the user and the base station, a Temporary Cell Radio Network Temporary Identifier (C-RNTI), and a time-frequency resource allocated for the next uplink transmission of the user; in the third step, the user sends a third message (Msg3) to the base station according to the information in the RAR. The Msg3 includes information such as a user terminal identifier and an RRC connection request, wherein the user terminal identifier is unique for a user and is used for resolving a conflict; in the fourth step, the base station sends conflict resolution identification to the user, including the user terminal identification of the user which wins the conflict resolution. And after detecting the own identity, the user upgrades the temporary C-RNTI into the C-RNTI and sends an ACK signal to the base station to finish the random access process and wait for the scheduling of the base station. Otherwise, the user will start a new random access procedure after a delay.

For a non-contention based random access procedure, since the base station knows the user identity, the user may be assigned a preamble sequence. Therefore, when the user sends the preamble sequence, the user does not need to randomly select the sequence, and the allocated preamble sequence is used. After detecting the allocated preamble sequence, the base station sends a corresponding random access response, including information such as timing advance and uplink resource allocation. And after receiving the random access response, the user considers that the uplink synchronization is finished and waits for the further scheduling of the base station. Therefore, the non-contention based random access procedure only comprises two steps: step one is to send a leader sequence; and step two, sending the random access response.

In LTE, the length of a detection window for detecting random access response is configured by a high-level signaling, starting from the last subframe plus three subframes for transmitting a leader sequence, and an RA-RNTI corresponding to a time-frequency resource used for transmitting the leader sequence is used in the detection window for detecting the random access response configured by the high-level signaling to monitor a physical downlink control channel.

Fig. 2 shows a random access response monitoring method in LTE. And monitoring the physical downlink control channel in a random access response detection window configured by the high-level signaling from the third subframe after the subframe which finishes sending the preamble sequence starts. Fig. 2 shows a case where the random access response detection window length is configured to be 3 subframes.

In 5G, since the high frequency band employs multi-beam operation and it is necessary to distinguish terminals with and without beam reciprocity in the network, the detection mode of the random access response also needs to be adjusted as required to adapt to terminals with different capabilities.

Disclosure of Invention

The invention aims to: the method overcomes the defects of the prior art, and provides a method for detecting and sending the random access response so as to simultaneously support the terminal with the beam reciprocity and the terminal without the beam reciprocity in a cell.

In order to achieve the above object, the present invention provides a random access response detection method, which comprises the following steps: acquiring random access channel configuration information, wherein the random access channel configuration information comprises random access response detection window configuration for first-class UE and random access response detection window configuration for second-class UE, the first-class UE has beam reciprocity, and the second-class UE does not have beam reciprocity;

and after the UE sends the leader sequence, detecting the random access response according to the beam reciprocity capability of the local terminal and the random access response detection window configuration corresponding to the beam reciprocity capability of the local terminal.

Preferably, the random access response detection window configuration for the first type of UE with beam reciprocity includes: the length information of the random access response detection window and/or the initial position information of the random access response detection window; the random access response detection window configuration for a second class of UEs that do not have beam reciprocity comprises: random access response detection window length information, and/or random access response detection window start position information.

Preferably, the random access response detection window configuration for the second type of UE includes: the starting position information and the length information of the random access response detection window corresponding to each random access channel resource in the random access channel resource set.

Preferably, the starting position information of the random access response detection window includes: the starting position information of the random access response detection window corresponding to the first random access channel resource in the random access channel resource set and the interval information of two adjacent random access response detection windows.

Preferably, the detecting a random access response according to the beam reciprocity capability of the home terminal and the random access response detection window configuration comprises:

when the UE sending the leader sequence has beam reciprocity, after sending the leader sequence, the UE carries out detection of random access response according to the random access response detection window configuration for the first type of UE;

or, when the UE sending the preamble sequence does not have the beam reciprocity, the UE performs detection of the random access response according to the random access response detection window configuration for the second type of UE after randomly accessing the last random access channel resource in the channel resource set;

wherein the set of random access channel resources comprises one or more random access channel resources.

Preferably, when the UE transmitting the preamble sequence does not have beam reciprocity, the method of detecting the random access response includes: and the UE determines a random access detection window according to the configuration of the random access response detection window after all random access channel resources of the random access channel resource set are accessed, and detects and receives a random access response according to the random access response-radio network temporary identifier (RA-RNTI) corresponding to one or more random access channel resources used for sending the leader sequence.

Preferably, the detecting and receiving the random access response according to the RA-RNTI corresponding to one or more random access channel resources used for transmitting the preamble sequence includes: and when the random access response is detected and successfully received according to the RA-RNTI corresponding to a certain random access channel resource in the random access channel resources used for sending the leader sequence, stopping the detection and the reception of the random access response.

Preferably, the successfully receiving the random access response comprises: and successfully detecting and decoding the downlink control channel according to the RA-RNTI, successfully decoding the downlink resource allocation indicated by the downlink control channel, and detecting a preamble sequence identifier matched with the preamble sequence used for transmission in a random access response carried by the downlink control channel.

Preferably, the detecting and receiving the random access response according to the RA-RNTI corresponding to one or more random access channel resources used for transmitting the preamble sequence includes: and detecting and receiving a random access response according to RA-RNTIs corresponding to all random access channel resources used for sending the leader sequence.

Preferably, the method for detecting the random access response by the second type of UE includes: and after all random access channel resources of the random access channel resource set are accessed by the second type of UE, detecting and receiving random access response according to RA-RNTI corresponding to the random access channel resources in a random access detection window corresponding to each random access channel resource used for sending the leader sequence.

Preferably, the method for detecting the random access response by the second type of UE includes: and detecting and successfully receiving a random access response according to the RA-RNTI corresponding to the random access channel in a random access detection window corresponding to one random access channel resource in the random access channel resources used for sending the leader sequence, namely stopping the detection and the reception of the random access response.

Preferably, the method for detecting the random access response by the second type of UE includes: and detecting in a corresponding random access response window according to RA-RNTI corresponding to random access channel resources in a random access channel resource set used for sending the leader sequence.

Preferably, the random access response of the second type of UE includes: and if the random access responses are successfully received in the corresponding random access response detection windows according to RA-RNTIs corresponding to all random access channels in the random access channel resource set used for transmitting the leader sequence, judging that the random access responses are failed to be received.

Preferably, the detecting of the random access response by the second type of UE includes: and the second type of UE detects the random access response, and if a plurality of random access responses are detected in the corresponding random access detection window, determines the message 3 priorities corresponding to the plurality of random access responses according to the received energy index in the random access response.

Preferably, the detecting of the random access response by the second type of UE includes: and the second type of UE detects the random access response, and if a plurality of timing advances and uplink authorization information are detected in the random access response, determines the priority of the message 3 corresponding to the timing advances and the uplink authorization information according to the received energy index in the random access response.

In order to achieve the above object, the present invention provides a method for sending a random access response, which includes the following steps:

and sending random access channel configuration information, wherein the random access channel configuration information comprises random access response detection window configuration for first-class UE and random access response detection window configuration for second-class UE, the first-class UE has beam reciprocity, and the second-class UE does not have beam reciprocity.

And after the sending of the leader sequence is detected, sending a random access response according to the random access channel resource, the detected leader sequence and the random access response detection window configuration.

Preferably, the random access response detection window configuration for the first type of UE includes: the length information of the random access response detection window and/or the initial position information of the random access response detection window; the random access response detection window configuration for the second type of UE comprises: random access response detection window length information, and/or random access response detection window start position information.

Preferably, the sending a random access response according to the random access channel resource, the detected preamble sequence and the random access response detection window configuration includes: and determining the beam reciprocity capability of the UE according to the detected time-frequency resource sent by the leader sequence and/or the detected leader sequence, and sending the random access response according to the corresponding random access response detection window configuration.

Preferably, the sending the random access response includes: if the leader sequence is detected on the first type random access channel resource used for the first type UE to send the leader sequence, sending a random access response in a random access response window after the leader sequence is detected; if the sending of the leader sequence is detected on the second type random access channel resource used for sending the leader sequence by the second type UE, the random access response is sent in the random access response window after the random access channel resource set.

Preferably, the sending the random access response includes: if the sending of the leader sequence for the first type of UE is detected, sending a random access response in a random access response window after the leader sequence is detected; if the transmission of the preamble sequence for the second type of UE is detected, the random access response is transmitted within the random access response window after the set of random access channel resources.

Preferably, the sending the random access response includes: if the preamble sequence is detected on the second type random access channel resource used for the second type UE to send the preamble sequence, or the preamble sequence used for the second type UE is detected to send, if the same preamble sequence is detected on a plurality of random access channel resources in the same random access channel resource set, the random access channel resource with the strongest correlation detection is selected, and the random access response is sent in the corresponding random access response window.

Preferably, the sending the random access response includes: if a preamble sequence is detected on a second type random access channel resource used for a second type UE to send the preamble sequence, or the sending of the preamble sequence of the second type UE is detected, if the same preamble sequence is detected on a plurality of random access channel resources in the same random access channel resource set, the random access channel resources with the same preamble sequence are sequenced and numbered according to the correlation detection energy, and corresponding index information is sent in corresponding random access response.

Preferably, the sending the random access response includes: if the same preamble sequence is detected to be transmitted on the same random access channel resource by using different receiving wave beam directions, the random access channel resource with the strongest correlation detection is selected, and the random access response is transmitted in the corresponding random access response window.

Preferably, the sending the random access response includes: if the same preamble sequence is detected to be transmitted on the same random access channel resource by using different receiving beam directions, the random access channel resources with the same preamble sequence detected are sequenced and numbered according to the correlation detection energy, and the corresponding index information is transmitted in the corresponding random access response.

To achieve the above object, the present invention provides a random access response detection apparatus, which includes the following processing units:

and the random access channel configuration information acquisition unit is used for acquiring the random access channel configuration information. The random access channel configuration information comprises a random access response detection window configuration for a first type of UE and a random access response detection window configuration for a second type of UE, wherein the first type of UE has beam reciprocity, and the second type of UE does not have beam reciprocity.

And the random access response detection unit is used for detecting the random access response according to the beam reciprocity capability of the local terminal and the configuration of the random access response detection window after the leader sequence is sent.

and the random access channel configuration information sending module is used for sending the random access channel configuration information. The random access channel configuration information includes a random access response detection window configuration for a first type of UE and a random access response detection window configuration for a second type of UE.

And the random access response sending module is used for sending a random access response according to the random access channel resource, the detected leader sequence and the random access response detection window configuration after the sending of the leader sequence is detected.

Compared with the prior art, the technical effects of the invention include but are not limited to: meanwhile, the method supports the detection of random access response by the terminal with the beam reciprocity and the terminal without the beam reciprocity, avoids resource waste and mismatching of a sending/detecting mode possibly caused by a traditional mode, and improves the operating efficiency of the whole system.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a diagram illustrating a conventional contention-based random access procedure;

fig. 2 is a schematic diagram of a random access response monitoring mode in LTE;

fig. 3 is a flow chart of a random access response detection method of the present invention;

fig. 4 is a flowchart of a random access response transmission method according to the present invention;

fig. 5 shows a resource division method of a random access channel according to a first embodiment;

fig. 6 is a diagram illustrating random access response transmission in two configurations;

fig. 7 illustrates a manner of transmitting multiple TAs within a single random access response detection window;

FIG. 8 is an allocation of random access channel resources;

fig. 9 is a diagram illustrating a random access response detection window;

fig. 10 is an example of a random access response;

fig. 11 is a diagram illustrating a structure of a random access response window according to a second embodiment;

fig. 12 is a schematic structural diagram of a random access response detection apparatus;

fig. 13 is a schematic structural diagram of a random access response transmitting apparatus.

Detailed Description

In order to make the detailed description of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In some of the flows described in the description and claims of this detailed description and in the above figures, a number of operations are included that occur in a particular order, but it should be clearly understood that these operations may be performed out of order or in parallel as they occur herein, the order of the operations, e.g., 101, 102, etc., merely being used to distinguish between various operations, and the order of the operations itself does not represent any order of performance. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments in this detailed description, belong to the scope of protection of this detailed description.

The random access channel selection method and the user equipment of the present embodiment may be applied to a random access procedure of an FDD mode or TDD mode wireless communication system, including a contention-based random access procedure and a non-contention random access procedure. Meanwhile, the random access channel selection method and the user equipment of the embodiment are suitable for a high-frequency band multi-beam operation scene in the 5G technology.

Referring to fig. 3, the random access response detection method of the present embodiment includes the following steps:

step 101, obtaining random access channel configuration information, where the random access channel configuration information includes a random access response detection window configuration for a first type of UE with beam reciprocity and a random access response detection window configuration for a second type of UE without beam reciprocity.

And step 102, after the UE sends the leader sequence, the random access response is detected according to the beam reciprocity capability of the local terminal and the random access response detection window configuration.

Referring to fig. 4, a random access response sending method in this embodiment includes the following steps:

step 201: sending random access channel configuration information, the random access channel configuration information comprising a random access response detection window configuration for a first type of UE with beam reciprocity and a random access response detection window configuration for a second type of UE without beam reciprocity.

Step 202: and after the sending of the leader sequence is detected, sending a random access response according to the random access channel resource, the detected leader sequence and the random access response detection window configuration.

Example 1

In this embodiment, a method for detecting a random access response will be described with reference to a specific system. It is assumed that the system supports both terminals with beam reciprocity and terminals without beam reciprocity to perform a random access procedure. Specifically, the system divides the available random access channel resources into a first type of random access channel resources and a second type of random access channel resources. The first kind of random access channel resources are used for the random access process of the terminal with the beam reciprocity, and the second kind of random access channel resources are used for the random access process of the terminal without the beam reciprocity.

In this embodiment, the first type of random access channel resource and the second type of random access channel resource use different time-frequency resource positions, and the base station can determine whether the terminal has beam reciprocity according to the random access resource, so that the terminal having beam reciprocity and the terminal not having beam reciprocity can use the same or different preamble sequence resource pools. For example, a terminal with beam reciprocity and a terminal without beam reciprocity use two completely different (i.e., non-overlapping) preamble sequence resource pools, or use two completely identical (i.e., partial preamble sequences are identical) preamble sequence resource pools, or use two identical preamble sequence resource pools. Fig. 5 shows the division of the random access channel resources in this embodiment.

The base station informs the terminal of the random access resource allocation on the master information block carried by the broadcast channel or the system information carried by the system information block indicated by the master information block. In the solution provided in this embodiment, the random access resource configuration includes resource configuration of a first type of random access channel resource, including a time-frequency resource location of a random access channel resource used by a terminal with beam reciprocity, preamble sequence resource pool information (a preamble sequence index range usable by the terminal with beam reciprocity) used by the terminal with beam reciprocity, and information required by the terminal with beam reciprocity when detecting a random access response, including a random access response window length and a timing sequence for detecting the random access response.

The random access resource configuration also includes resource configuration of a second type of random access channel resource, including time-frequency resource location of the random access channel resource used by the terminal without beam reciprocity, preamble sequence resource pool information (preamble sequence index range usable by the terminal without beam reciprocity) used by the terminal without beam reciprocity, and information required by the terminal without beam reciprocity in detecting a random access response, including a random access response window length, and a timing sequence for detecting the random access response.

If the same preamble resource pool is used by the terminal with beam reciprocity and the terminal without beam reciprocity, only the information (i.e., the preamble index range) of one preamble resource pool needs to be notified.

The base station detects the leader sequence on the distributed random access channel, and if the sending of the leader sequence is detected, the base station sends a random access response according to the following time sequence:

if the transmission of the leader sequence is detected on the first type random access channel, adding k to the subframe which is allocated to the end of the first type random access channel₁And sending a random access response after each subframe, and scrambling by using RA-RNTI in a corresponding downlink control channel.

If at the secondIf the base station allocates a plurality of random access channels (for a terminal having no beam reciprocity to attempt transmission of a random access preamble sequence using transmission beams in a plurality of directions), k is added to the last subframe of the last allocated random access channel₂And sending a random access response after + i subframes, and scrambling by using a corresponding RA-RNTI in a corresponding downlink control channel.

In the above configuration, the parameter k₁And k is₂Informing the base station that the terminals can be the same or different through random access channel configuration; the parameter i is an optional parameter, and if the parameter i is set to be 0, the random access responses of all the random access channels are transmitted on the same subframe; in another configuration, the parameter i may be related to an index of a random access channel, that is, different random access channels correspond to different random access response detection windows. The two transmission modes for the random access response when the terminal does not have the beam reciprocity can be described with fig. 6.

Fig. 6 is directed to a case where, for a terminal without beam reciprocity, a base station may configure multiple random access channels, so that the terminal transmits a preamble sequence on the multiple random access channels by switching transmission beams. For this case, the base station may detect the same preamble sequence on multiple random access channels. At this time, the resources of the random access response may be configured in two ways as shown in fig. 6:

mode 1: and i is 0. RA-RNTIs corresponding to a plurality of random access channels indicate different downlink shared channels to send different random access responses on the same downlink control channel. In this case, the base station may select a random access channel with the strongest received energy from the random access channels with the same preamble sequence, calculate a corresponding timing advance, and use the RA-RNTI corresponding to the random access channel to indicate the downlink shared channel to transmit a random access response; or calculating all random access channels with detected leader sequences, calculating corresponding timing advance, and using RA-RNTI corresponding to the random access channels to indicate different downlink shared channels to send random access response on the same downlink control channel.

Mode 2: i is not 0. RA-RNTIs corresponding to the multiple random access channels indicate different downlink shared channels to send different random access responses on different downlink control channels. A simple example is that for the nth random access channel, k is added to the last subframe of the last random access channel allocated₂And sending a random access response corresponding to the random access channel after + Mn subframes, namely i is Mn, wherein M is a positive integer, and the base station configures through the configuration information of the random access channel. In this way, the random access responses for different random access channels are located differently. If the base station detects that a plurality of random access channels send the same leader sequence, the base station selects the random access channel with the strongest receiving energy and sends a random access response at the random access response sending opportunity corresponding to the random access channel; or the base station sends corresponding random access response at the random access response sending opportunity corresponding to all the detected random access channels.

It should be noted that, the detection of the preamble sequence in the above description should be understood as the result of detecting the correlation of the preamble sequence is greater than a predetermined threshold. Information such as timing advance can be calculated from the correlation detection result.

In addition, in the case where the base station does not have beam reciprocity, the base station needs to arrange the same preamble sequence and repeatedly transmit the preamble sequence, and detect the preamble sequence by scanning the reception beam at the base station. In this case, the base station may detect the same preamble sequence on multiple receive beams on the same random access channel. For the configuration mode 1 of sending random access response, the base station may process the random access response by:

if the base station detects the same preamble sequence on a plurality of receiving beams, the base station selects the receiving beam direction with the strongest receiving energy, calculates the corresponding timing advance, generates a random access response, and uses the RA-RNTI generated by the time frequency resource corresponding to the random access channel to indicate the corresponding physical downlink shared channel to send the random access response;

if the base station detects the same preamble sequence in multiple beam directions, the base station calculates a timing advance required for receiving the beam direction of the preamble sequence, and uses an RA-RNTI generated by a time-frequency resource corresponding to the random access channel to indicate a corresponding physical downlink shared channel to transmit a random access response, wherein the random access response includes multiple timing advances. The above-described manner can be described with reference to fig. 7.

In fig. 7, each dashed line box corresponds to a receiving beam direction of the base station, the base station receives the same preamble sequence in multiple receiving beam directions, and the base station scrambles the control channel using the RA-RNTI generated by the random access channel resource within the detection window corresponding to the random access channel resource, and transmits the random access response in the downlink shared channel indicated by the control channel. The random access response carries the detected timing advances and the resource allocation information sent by the corresponding message 3.

Whether the base station side has the beam reciprocity or not and whether the terminal side has the beam reciprocity or not are not contradictory, and the procedures can be used in combination.

The above-described operation on the base station side may have an influence on the detection of the random access response on the terminal side. Before a random access attempt is made, the terminal reads the configuration information of the random access channel from the broadcast channel in the synchronization signal block, and learns the random access channel resources allocated to the terminals with beam reciprocity and the terminals without beam reciprocity and the configuration of the corresponding random access response detection window. The configuration of the random access response detection window comprises a starting position indication k of the random access response detection window₁And k is₂Random access response detection window length, etc.

And for the terminal with the beam reciprocity, after the preamble sequence is sent, the RA-RNTI corresponding to the time-frequency resource of the random access channel used for sending the preamble sequence is used for monitoring the downlink control channel in the random access response detection window. The starting position of the random access response detection window is k added after the last sub-frame (time slot) of the transmission leader sequence₁One sub-frame (time slot) with window length of N₁One sub-frame (time)Slot), configured and notified by the base station through the random access configuration information. For terminals with beam reciprocity, only one RA-RNTI (determined by the random access channel time-frequency resource that sends the preamble sequence) is used to monitor the downlink control channel. And if the control information scrambled by the corresponding RA-RNTI is detected in the downlink control channel, reading the random access response on the downlink shared channel indicated by the control information.

For the terminal without beam reciprocity, the base station configures a plurality of random access channels for the terminal without beam reciprocity to transmit the same or different preamble sequences by adopting a beam switching/scanning mode. If the base station adopts the configuration mode 1, the terminal monitors the downlink control channel by using a plurality of RA-RNTIs in the random access response detection window after the distributed preamble sequences are sent by the plurality of random access channels. For the configuration mode 1, the start position of the random access response detection window is k after the last subframe (time slot) of the last random access channel₂One sub-frame (time slot) with window length of N₂And a subframe (slot) configured and notified to the terminal by the base station through the random access configuration information. In this way, the terminal needs to monitor the downlink control channel using multiple RA-RNTIs determined by the random access channel on which the terminal transmits the preamble sequence. And if the terminal successfully decodes in the random access response detection window by using one or more RA-RNTIs, continuously reading the downlink resource allocation allocated by the corresponding control channel. And if the preamble sequence identifier used for sending is detected in the downlink resource allocation corresponding to one or more RA-RNTIs, the detection of the random access response is successful.

If the base station adopts the configuration mode 2 and the base station allocates N random access channels, the terminal monitors N random access response detection windows, and the starting point of the random access response detection window of the nth random access channel is the last subframe (time slot) of the last random access channel and then k is added₂+i_nWherein i is_nFor parameters related to the random access channel index n, e.g. i may be taken_nMn. The random access response detection windows corresponding to the random access channels are not mutually overlapped. Final (a Chinese character of 'gan')And the terminal monitors the downlink control channel by using the corresponding RA-RNTI in the random access response detection window corresponding to each random access channel. And if the decoding is successful, reading corresponding downlink resource allocation information and detecting a preamble sequence identifier contained in the downlink resource allocation information. If one or more preamble sequence identifiers are detected to be consistent with the transmitted preamble sequence, the detection of the random access response is successful.

It should be noted that the method provided in this embodiment is also applicable to a case where only one type of terminal exists in the system, or the base station configures only the random access channel resources applicable to one type of terminal. For example, if the system supports only terminals without beam reciprocity, the base station allocates and informs only random access channel resources and corresponding random access response detection configurations for terminals without beam reciprocity. And the terminals in the cell process the transmission of the random access preamble sequence and the detection of the random access response of the terminals without beam reciprocity. In addition, the method provided by the embodiment is suitable for the contention-based or non-contention-based random access process. For the non-contention based random access process, the base station may refer to the foregoing processing manner for supporting the terminal without beam reciprocity to configure multiple random access channel resources, and the terminal selects, according to its own requirements (for example, the number of covered or transmitted beams), a random access channel resource that is not greater than the number of configured random access channel resources, transmits a preamble sequence, and detects a random access response according to a detection method of a corresponding random access response.

Similarly, the method provided by this embodiment is also applicable to the case where only the terminal with beam reciprocity exists in the system or the base station only configures the random access channel resource applicable to the local beam reciprocity.

Example 2

In this embodiment, a method for detecting a random access response will be described with reference to a specific system. In this embodiment, the time-frequency resources of the random access channels for the terminals with beam reciprocity and the terminals without beam reciprocity are shared, but non-overlapping random access preamble sequence groups are used. I.e. the total available preamble sequences are divided into a first set of preamble sequences for terminals with beam reciprocity and a second set of preamble sequences for terminals without beam reciprocity, the two sets of preamble sequences being non-overlapping.

In order to simultaneously support the random access process of the terminal with the beam reciprocity and the terminal without the beam reciprocity, the base station allocates a plurality of random access channel resource sets, and each random access channel resource set consists of a plurality of random access channels. The division of the random access channel resource set and the time-frequency position of the random access channel forming the random access channel set are informed to the terminal by the base station through the random access configuration carried in the system information carried by the main information block in the broadcast channel or the system information block indicated by the main information block in the synchronous signal block. The random access channel resource sets designated by the random access configuration information carried by the broadcast channels in different synchronous signal blocks are different and are used for distinguishing different sending beam directions of the base station side. The base station can transmit single or repeated or multiple preamble sequences according to whether the random access channel in the random access channel resource set has beam reciprocity or not, and informs the terminal through information such as preamble sequence formats.

And for the terminal with beam reciprocity, selecting a random access channel in a random access channel resource set according to the configuration information of the base station or randomly selecting the random access channel for transmitting a leader sequence from all available random access channels with equal probability. The base station may also configure the terminal to transmit using the same beam in multiple random access channels of the same set of random access channel resources.

For a terminal without beam reciprocity, the terminal uses different beam directions to transmit a preamble sequence on different random access channels according to the number of the supported transmission beam directions.

The allocation of the channel resources described above can be described with reference to fig. 8.

In fig. 8, one set of random access channel resources is composed of M random access channel resources, where the parameter M is a positive integer. For a terminal with beam reciprocity, one random access channel resource is selected from the terminals to perform preamble sequence transmission (except for the example shown in the figure, a plurality of random access channels can also be selected to transmit); for a terminal without beam reciprocity, a plurality of even all random access channel resources are selected for transmitting the preamble sequence. It should be noted that fig. 8 illustrates an example in which each random access channel in the random access channel resource set is discrete in time, and another possibility is that each random access channel in the random access channel resource set is continuous in time. The random access resource sets corresponding to different broadcast channel resources are distinguished by time or frequency to correspond to different base station side transmission beam directions.

In this embodiment, the manner and the flow of detecting the random access response are different between the terminal with the beam reciprocity and the terminal without the beam reciprocity. Specifically, when configuring the random access channel resources, the base station configures the starting positions of the random access response detection windows of the two types of terminals and the length of the detection windows at the same time. For a terminal with beam reciprocity, after the transmission of the preamble sequence is completed, k is added after the last subframe (or time slot) of the allocated random access channel resource₁A sub-frame (or a time slot) for detecting a random access response; for terminals without beam reciprocity, k is added after the last subframe (or slot) of the set of random access channel resources used to transmit the preamble sequence₂And detecting a random access response in each subframe (or time slot). Parameter k₁And k is₂Configured by the base station if k₁And k is₂If they are equal, only one parameter needs to be configured or preset. The above-described manner can be described by fig. 9.

In fig. 9, the random access response windows of the two types of terminals do not overlap in position, so as to avoid unnecessary collision.

Specifically, if the base station detects one preamble sequence in the first group of preamble sequences in a random access channel in the random access channel resource set, the base station calculates an RA-RNTI according to the time-frequency resource of the random access channel in which the preamble sequence is detected, scrambles the RA-RNTI by using the RA-RNTI in a downlink control channel in a corresponding random access response detection window, and sends a random access response in the downlink time-frequency resource allocated by the control channel.

If the base station detects one preamble sequence in the second group of preamble sequences in one or more random access channels in the random access channel resource set, the processing manner may be as follows:

-for a plurality of random access channels for which the same preamble sequence is detected, selecting the random access channel with the strongest correlation detection, calculating a corresponding RA-RNTI based on the time-frequency resources of the random access channel, scrambling using the RA-RNTI in a random access response detection window, and transmitting a random access response in the downlink time-frequency resources allocated by the corresponding control channel.

-for a plurality of random access channels for which the same preamble sequence is detected, calculating a corresponding plurality of RA-RNTIs from time-frequency resources of the random access channels, and generating a corresponding plurality of random access responses. The plurality of random access responses may be transmitted in the following manner:

1. multiple random access responses are indicated by the same control channel within the random access response window. That is, a plurality of control information scrambled by different RA-RNTIs are transmitted simultaneously in the same control channel, different downlink resources are indicated, and corresponding random access responses are transmitted.

2. The plurality of random access responses are indicated by a plurality of control channels. I.e. the ith random access channel in the random access channel resource set, the initial position of its random access response detection window is k₂+ n (i), where the function n (i) is a parameter related to i, for example, defined as n (i) ═ Mi, M is a positive integer, and is a parameter configured or preset by the base station. If the sending of the leader sequence is detected in the ith random access channel, calculating corresponding RA-RNTI, scrambling control information by using the RA-RNTI in a downlink control channel in a corresponding random access response detection window, and sending corresponding random access response on downlink time-frequency resources indicated by the control information. It should be noted that, if this method is adopted, the detection windows of the random access responses corresponding to different random access channels should not overlap.

The manner described in this embodiment also has an impact on the terminal behavior. Specifically, after finishing downlink synchronization, the terminal reads the random access configuration information in the master information block or the system information block carried in the broadcast channel in the corresponding synchronization signal block, and determines the time-frequency resource allocation of the random access channel and the information of the preamble sequence resource pool (i.e. the index range of the first group of preamble sequences and the index range of the second group of preamble sequences) used by the terminal with beam reciprocity and the terminal without beam reciprocity.

The terminal selects the preamble sequence according to the beam reciprocity capability (i.e., whether or not beam reciprocity is provided). If the beam reciprocity exists, selecting a first group of leader sequences; if beam reciprocity is not present, a second set of preamble sequences is selected. The terminal randomly selects a preamble sequence with equal probability in the selected preamble sequence group.

The terminal selects channel resources for random access according to the beam reciprocity capability (i.e., whether or not beam reciprocity is provided). If the beam reciprocity exists, the base station is used for allocating the random access channel, or the random access channel resource is randomly selected with equal probability from the random access channel resources in the random access channel resource set allocated by the base station for transmitting the leader sequence. If the beam reciprocity does not exist, all random access channel resources in the random access channel resource set allocated by the base station or part of the random access channel resources are used for sending the leader sequence.

And after the terminal finishes sending the leader sequence, detecting the random access response in a random access response detection window.

If the terminal has beam reciprocity, the starting point of the random access response detection window is k added after the last subframe (or time slot) of the transmitted preamble sequence₁A number of subframes (or slots), the window length being configured by the base station;

if the terminal does not have the beam reciprocity, the terminal acts in one of the following situations according to the configuration of the base station or a preset mode:

-the terminal detects a random access response within a random access response detection window, the random access response detection window starting at the last random access channel of the set of random access channel resourcesK after the last subframe (or slot)₂A number of subframes (or slots), the window length being configured by the base station; and the terminal calculates RA-RNTI corresponding to each random access channel resource used for sending the leader sequence and monitors the downlink control channel in the random access detection window by using the calculated RA-RNTI.

-the terminal detecting random access responses within a plurality of random access response detection windows. The starting position of the random access response detection window corresponding to the ith random access channel resource in the random access channel resource set is k added after the last subframe (or time slot) of the last random access channel of the random access channel resource set₂+ n (i) subframes (or time slots), the window length being configured by the base station. Where n (i) is a function related to the index i, a simple way to determine is n (i) ═ Mi, where M is a positive integer, configured or pre-set by the base station. And the terminal uses the corresponding RA-RNTI to detect the downlink control channel in the random access detection window in the random access response detection window corresponding to the used random access channel resource.

The conditions for the terminal to stop monitoring the random access response are as follows:

-if the terminal is beam-reciprocity, stopping monitoring for random access responses after successful reception of a random access response containing a random access preamble sequence identifier matching the transmitted preamble sequence. That is, if the downlink resource allocation indicated in the PDCCH scrambled by the RA-RNTI is successfully received and the random access response therein includes the random access response preamble sequence identifier corresponding to the transmitted random access response preamble sequence, the random access response is considered to be successfully received;

if the terminal does not have beam reciprocity and monitors only one random access response window according to the foregoing manner, the terminal's possible behavior is one of the following possibilities:

1. the terminal uses RA-RNTI corresponding to random access resources used for sending the leader sequence one by one to detect downlink control channels in the random access response window, if downlink resource allocation indicated in PDCCH scrambled by a certain RA-RNTI is successfully received and the random access response comprises a random access response leader sequence identifier corresponding to the transmitted random access response leader sequence, the random access response is considered to be successfully received, and the monitoring in the random access response window is stopped;

2. and the terminal detects the downlink control channel in the random access response window by using RA-RNTI corresponding to all the random access resources used for sending the leader sequence. For a random access channel, if the downlink resource allocation indicated in the PDCCH scrambled by the RA-RNTI corresponding to the random access channel resource is successfully received, and the random access response comprises a random access response leader sequence identifier corresponding to the transmitted random access response leader sequence, the random access response corresponding to the random access channel is considered to be successfully received, the RA-RNTI corresponding to the random access channel resource is stopped from being used for detecting a random access response window, RA-RNTIs corresponding to other random access channel resources which are not detected are used for detecting the random access response window, and the monitoring of the random access response window is completed until all RA-RNTIs corresponding to the random access channel resource which is used for the leader sequence transmission.

If the terminal does not have beam reciprocity and monitors multiple random access response windows according to the foregoing manner, the terminal's possible behavior is one of the following possibilities:

1. the terminal uses RA-RNTI corresponding to random access resources used for sending the leader sequence one by one to detect downlink control channels in corresponding random access response windows, if downlink resource allocation indicated in a PDCCH scrambled by a certain RA-RNTI is successfully received, and the random access response comprises a random access response leader sequence identifier corresponding to the transmitted random access response leader sequence, the random access response is considered to be successfully received, and the monitoring in the subsequent random access response windows is stopped;

2. and the terminal detects the downlink control channel in the corresponding random access response window by using the RA-RNTI corresponding to the random access resources used by all the transmitted leader sequences. For a random access channel, if the downlink resource allocation indicated in the PDCCH scrambled by the RA-RNTI corresponding to the random access channel resource is successfully received, and the random access response comprises a random access response leader sequence identifier corresponding to the transmitted random access response leader sequence, the random access response corresponding to the random access channel is considered to be successfully received, the RA-RNTI corresponding to the random access channel resource is stopped from being used for detecting a random access response window, the RA-RNTIs corresponding to other random access channel resources which are not detected are used for detecting the random access response window, and the monitoring of the corresponding random access response window is completed until all the RA-RNTIs corresponding to the random access channel resource which is used for the leader sequence transmission.

Example 3

In this embodiment, a method for detecting and sending a random access response will be described with reference to a specific system. The main point of the present embodiment is a manner in which the base station transmits a random access response after transmitting a preamble sequence to a terminal without beam reciprocity, and a manner in which the terminal detects the random access response. The scheme in this embodiment is applicable to the resource allocation methods in the first and second embodiments, and does not affect the methods for detecting and sending the random access response by the terminal and the base station with beam reciprocity.

As described above, in order to facilitate the transmission of the random access preamble sequence by the terminal having no beam reciprocity, the base station allocates a plurality of random access channel resources in the random access channel resource set. The terminal transmits a preamble sequence on a plurality of or all random access channel resources for determining an optimal beam direction of a plurality of transmit beam directions. The base station may detect the same preamble sequence on multiple random access channel resources and feed back a corresponding multiple random access responses.

If the base station detects the same preamble sequence on a plurality of random access channel resources, the base station sequences the plurality of random access channel resources. The sorting criterion is that the output values are detected according to the correlation of the leader sequences, sorting is carried out from large to small, and indexes are sequentially distributed. And the base station informs the terminal of the corresponding priority index representing the priority in an explicit or implicit notification mode in the corresponding random access response. The way of displaying the notification comprises directly notifying the corresponding index in the random access response, i.e. transmitting bits for characterizing the corresponding received index of the random access channel in the random access response.

In another case, if there is no beam reciprocity on the base station side, the base station needs to configure the terminal to transmit a repeated preamble sequence so that the base station receives the preamble sequence in a manner of receiving beam scanning. In this case, the base station may detect the same preamble sequence in multiple receive beam directions on the same random access channel resource and measure multiple timing advances. The multiple timing advances correspond to the same random access channel and the same preamble sequence and are therefore transmitted in the same random access response. In this embodiment, if the base station detects the same preamble sequence using multiple receive beam directions on the same random access channel resource, the base station sequences the multiple receive beam directions. The sorting criterion is to sort from large to small according to the magnitude of the leader sequence correlation detection output value, and sequentially allocate the priority index of the representation priority to the timing advance and the resource allocation indication of the message 3 obtained by the detection of the corresponding receiving beam direction. The base station informs the timing advance obtained by measuring each receiving beam direction, corresponding message 3 resource allocation information, a temporary cell radio network temporary identifier (TC-RNTI) allocated to the leader sequence detected in the receiving beam direction in a corresponding random access response, and informs a corresponding index in a display or implicit mode. Wherein, the display mode is to directly inform the corresponding index; the implicit way is to order the timing advance and message 3 resource allocation in index order. Fig. 10 shows an example of explicit and implicit notification in a random access response.

In fig. 10, the other information refers to other information included in the random access response.

The foregoing transmission description in this embodiment may have an impact on the terminal behavior. Specifically, if the random access responses corresponding to the multiple random access channel resources are successfully detected when the random access responses are detected, possible behaviors of the terminal include:

-the terminal selects the random access response with the highest priority represented by the priority index information, and sends the message 3 according to the content in the random access response;

the terminal selects a plurality of random access responses with highest priority represented by the priority index information, and sends a message 3 according to the content in the random access responses;

the terminal sends a message 3 according to the content in each random access response.

If the terminal receives multiple timing advance, uplink grant and other information in a random access response, the terminal may act as:

Example 4

In this embodiment, a method for detecting and sending a random access response will be described. In this embodiment, the random access response is detected by using a plurality of sub random access windows in the random access window. The method described in this embodiment is suitable for the terminal to transmit the preamble sequence at one or more random access occasions when transmitting the preamble sequence. The same or different uplink transmission beams may be used for the transmission of the preamble sequences on multiple random access occasions. The random access opportunity is understood as the random access channel resource in the foregoing embodiment, which is used for transmitting a complete preamble sequence satisfying the preamble sequence format.

In this embodiment, the base station configures one or more random access occasions for transmitting the preamble sequence for the terminal that needs to transmit the preamble sequence. If the base station configures multiple random access occasions, the terminal may transmit the preamble sequence in these multiple uplink transmission beams using the same or different uplink transmission beams. The number of the random access occasions used by the terminal is determined by the number of the uplink transmission beams of the terminal, but is not larger than the maximum number of the random access occasions configured by the base station.

The way for the terminal to detect the random access response is briefly described as follows:

after the terminal sends the leader sequence at the first random access opportunity, the terminal starts to detect the random access response in the random access response window which starts after the kth subframe. And the terminal detects the downlink control channel according to the RA-RNTI calculated by the time-frequency resource of the first random access opportunity. The parameter k is determined by a predetermined method or a base station configuration method. If the method is determined by adopting a base station configuration mode, the related parameter k is transmitted in the random access configuration information.

The window length of the random access response window is configured by the base station, and all random access occasions configured by the base station need to be covered. And when the terminal needs to send the leader sequence within the duration of the random access response window, suspending the detection of the random access response and sending the random access leader sequence on the configured time-frequency resource of the random access opportunity. After the new random access preamble sequence is sent, the terminal needs to use the RA-RNTI calculated by the time-frequency resources of all the random access occasions that have been used for preamble sequence sending to perform detection in the random access response window.

In this way, the number of RA-RNTIs used by the terminal to detect the random access response is increased, thereby increasing the complexity of the terminal to detect the random access response. One possible simplification is to configure the effective length k1 of each RA-RNTI in addition to the random access response window length. That is, from the k 'th subframe after the end of the random access opportunity to the k' + k1 subframes, the RA-RNTI calculated by the time-frequency resource of the random access opportunity can be used to detect the random access response in the k1 subframes. It should be noted that the effective lengths of RA-RNTIs corresponding to different random access occasions may overlap, that is, the terminal may still use multiple RA-RNTIs to perform random access response detection in the random access response window, but the number of RA-RNTIs used at the same time will be reduced. The parameter k' is configured or preset by the base station. And the effective length of the RA-RNTI corresponding to the first random access opportunity is calculated from the starting time of the random access response window. The above process is shown in fig. 11.

If the terminal successfully detects the random access response within a certain effective length of the RA-RNTI, one possible way is that the terminal continues to send the preamble sequence on the configured random access opportunity and continues to detect the random access response within the random access response window. In this case, the random access response needs to carry the measurement result of the corresponding preamble sequence or the sequencing result of the measurement result, so that the terminal selects the optimal transmission beam. For example, the base station configures 8 random access occasions for transmitting the preamble sequence, and the terminal transmits the preamble sequence at the 8 random access occasions and detects the random access response by using the method in the embodiment. The terminal successfully detects the random access response in the effective length of RA-RNTI calculated by the time-frequency resources of the 2 nd, 4 th and 5 th random access occasions, and the measurement results of the leader sequences carried in the random access response are sequenced into 4, 2 and 5. And the terminal determines a proper uplink transmission beam according to a preset criterion. The preset criterion is the uplink transmission beam adopted by the random access opportunity corresponding to the random access response carrying the best measurement result or having the best measurement result sequencing. Another possible preset criterion is to randomly select a random access response with equal probability from the detected random access responses, and determine an uplink transmission beam according to a corresponding random access opportunity.

Another detection mode is that if the terminal successfully detects the random access response within the effective length of a certain RA-RNTI, the detection of the random access response is considered to be successful, the detection of the random access response can be stopped, and the subsequent access or data transmission steps can be continued. In this way, there is no need to carry measurement result information within the random access response.

If the terminal does not send the leader sequence on all configured random access occasions, the detection of the random access response can be terminated after the effective length of the RA-RNTI is calculated by the time-frequency resource of the last random access occasion of the leader sequence. If the random access response is not successfully detected at this time, the random access process is considered to be failed.

Corresponding to the random access response detection method of the terminal side, the application also provides a random access response detection device which can be positioned at the terminal side. Fig. 12 is a schematic structural diagram of a corresponding apparatus. As shown in fig. 12, the apparatus includes: a random access channel configuration information acquisition unit and a random access response detection unit.

The random access channel configuration information acquisition unit is used for acquiring the random access channel configuration information. And the random access response detection unit is used for detecting the random access response according to the beam reciprocity capability of the local terminal and the configuration of the random access response detection window after the leader sequence is sent.

Corresponding to the random access response sending method of the base station side, the application also provides a random access response sending device which can be positioned at the base station side. Fig. 13 is a schematic structural diagram of a corresponding apparatus. As shown in fig. 13, the apparatus includes: a random access channel configuration information sending unit and a random access response sending unit.

The random access channel configuration information sending unit is used for sending the random access channel configuration information. And the random access response sending unit is used for sending a random access response according to the random access channel resource, the detected leader sequence and the random access response detection window configuration after the sending of the leader sequence is detected.

In the several embodiments provided in this detailed description, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.

While the method and apparatus provided by the present embodiment have been described in detail, those skilled in the art will appreciate that the various modifications, additions, substitutions, and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A random access response detection method, characterized by: the method comprises the following steps:

user Equipment (UE) acquires random access channel configuration information, wherein the random access channel configuration information comprises random access response detection window configuration used for first type of UE and random access response detection window configuration used for second type of UE, the first type of UE has beam reciprocity, and the second type of UE does not have beam reciprocity;

after the UE sends the leader sequence, random access response is detected according to the beam reciprocity capability of the local terminal and the random access response detection window configuration corresponding to the beam reciprocity capability of the local terminal;

wherein the content of the first and second substances,

and the position of the random access response detection window of the first type of UE is not overlapped with the position of the random access response detection window of the second type of UE.

2. The random access response detection method of claim 1, wherein the random access response detection window configuration for the first class of UEs comprises: the length information of the random access response detection window and/or the initial position information of the random access response detection window;

the random access response detection window configuration for the second type of UE comprises: random access response detection window length information, and/or random access response detection window start position information.

3. The random access response detection method of claim 2, wherein the random access response detection window configuration for the second class of UEs comprises:

the starting position information of the random access response detection window corresponding to each random access channel resource in the random access channel resource set and the length information of the random access response detection window.

4. The random access response detection method of claim 3, wherein the starting position information of the random access response detection window comprises: the starting position information of the random access response detection window corresponding to the first random access channel resource in the random access channel resource set and the interval information of two adjacent random access response detection windows.

5. The random access response detection method of claim 1, wherein: the detecting the random access response according to the beam reciprocity capability of the local terminal and the random access response detection window configuration comprises:

or, when the UE sending the preamble sequence does not have the beam reciprocity, the UE performs detection of the random access response according to the random access response detection window configuration for the second type of UE after randomly accessing the last random access channel resource in the random access channel resource set;

6. The random access response detection method of claim 5, wherein: when the UE transmitting the preamble sequence does not have beam reciprocity, the method for detecting the random access response comprises the following steps:

and after all random access channel resources of the random access channel resource set are accessed by the UE, determining a random access detection window according to the configuration of the random access response detection window, and detecting and receiving a random access response according to the random access response-radio network temporary identifier (RA-RNTI) corresponding to one or more random access channel resources used for sending the leader sequence.

7. The random access response detection method of claim 6, wherein: the detecting and receiving the random access response according to the RA-RNTI corresponding to one or more random access channel resources used for sending the preamble sequence comprises:

and when the random access response is detected and successfully received according to the RA-RNTI corresponding to a certain random access channel resource in the random access channel resources used for sending the leader sequence, stopping the detection and the reception of the random access response.

8. The random access response detection method of claim 5, wherein: the method for detecting the random access response by the second type of UE comprises the following steps:

and after all random access channel resources of the random access channel resource set are accessed by the second type of UE, detecting and receiving random access response according to RA-RNTI corresponding to the random access channel resources in a random access detection window corresponding to each random access channel resource used for sending the leader sequence.

9. The random access response detection method of claim 5, wherein: the method for detecting the random access response by the second type of UE comprises the following steps:

and in a random access detection window corresponding to one random access channel resource in the random access channel resources used for sending the leader sequence, detecting and successfully receiving a random access response according to the RA-RNTI corresponding to the random access channel, namely stopping the detection and the reception of the random access response.

10. The random access response detection method of claim 5, wherein: the second type of UE performing the random access response includes:

and if the random access responses are successfully received in the corresponding random access response detection windows according to RA-RNTIs corresponding to all random access channels in the random access channel resource set used for transmitting the leader sequence, judging that the random access responses are failed to be received.

11. The random access response detection method of claim 5, wherein: the detecting of the random access response by the second type of UE includes:

and the second type of UE detects the random access response, and if a plurality of random access responses are detected in the corresponding random access detection window, determines the priority of the message 3 corresponding to the plurality of random access responses according to the received energy index in the random access response.

12. The random access response detection method of claim 5, wherein: the detecting of the random access response by the second type of UE includes:

and the second type of UE detects the random access response, and if a plurality of timing advances and uplink authorization information are detected in the random access response, determines the priority of the message 3 corresponding to the timing advances and the uplink authorization information according to the received energy index in the random access response.

13. A random access response transmitting method, characterized in that: the method comprises the following steps:

a base station sends random access channel configuration information, wherein the random access channel configuration information comprises random access response detection window configuration used for first type User Equipment (UE) and random access response detection window configuration used for second type UE, the first type UE has beam reciprocity, and the second type UE does not have beam reciprocity;

after the base station detects the sending of the leader sequence, the base station sends a random access response according to the random access channel resource, the detected leader sequence and the random access response detection window configuration

Wherein the content of the first and second substances,

14. The method of claim 13, wherein the random access response detection window configuration for the first class of UEs comprises: the length information of the random access response detection window and/or the initial position information of the random access response detection window;

15. The method of claim 14, wherein the random access response detection window configuration for the second class of UEs comprises:

16. The method of claim 15, wherein the starting location information of the random access response detection window comprises: the starting position information of the random access response detection window corresponding to the first random access channel resource in the random access channel resource set and the interval information of two adjacent random access response detection windows.

17. An apparatus for random access response detection, the apparatus comprising:

a random access channel configuration information obtaining unit, configured to obtain random access channel configuration information, where the random access channel configuration information includes a random access response detection window configuration for a first type of user equipment UE and a random access response detection window configuration for a second type of UE, where the first type of UE has beam reciprocity and the second type of UE does not have beam reciprocity;

a random access response detection unit, configured to detect a random access response according to the beam reciprocity capability of the home terminal and the random access response detection window configuration after sending the preamble sequence;

wherein the content of the first and second substances,

18. The random access response detection apparatus of claim 17, wherein the random access response detection window configuration for the first class of UEs comprises: the length information of the random access response detection window and/or the initial position information of the random access response detection window;

19. The random access response detection apparatus of claim 18, wherein the random access response detection window configuration for the second class of UEs comprises:

20. The random access response detection apparatus of claim 19, wherein the starting position information of the random access response detection window comprises: the starting position information of the random access response detection window corresponding to the first random access channel resource in the random access channel resource set and the interval information of two adjacent random access response detection windows.

21. The random access response detection device of claim 17, wherein: the random access response detection unit is configured to:

when the UE sending the leader sequence has beam reciprocity, after sending the leader sequence, detecting the random access response according to the random access response detection window configuration for the first type of UE;

22. The random access response detection device of claim 21, wherein: the random access response detection unit is configured to:

when the UE sending the leader sequence does not have beam reciprocity, the UE determines a random access detection window according to the configuration of the random access response detection window after all random access channel resources of a random access channel resource set are accessed, and detects and receives a random access response according to the random access response-radio network temporary identifier RA-RNTI corresponding to one or more random access channel resources used for sending the leader sequence.

23. The random access response detection device of claim 22, wherein: the random access response detection unit is configured to:

24. The random access response detection device of claim 21, wherein: the random access response detection unit is configured to:

25. The random access response detection device of claim 21, wherein: the random access response detection unit is configured to:

26. The random access response detection device of claim 21, wherein: the random access response detection unit is configured to:

27. The random access response detection device of claim 21, wherein: the random access response detection unit includes:

28. The random access response detection device of claim 21, wherein: the random access response detection unit is configured to:

29. An apparatus for transmitting a random access response, the apparatus comprising:

a random access channel configuration information sending unit, configured to send random access channel configuration information, where the random access channel configuration information includes a random access response detection window configuration for a first type of UE and a random access response detection window configuration for a second type of UE;

a random access response sending unit, configured to send a random access response according to a random access channel resource, the detected preamble sequence, and the random access response detection window after detecting the sending of the preamble sequence;

wherein the content of the first and second substances,

30. The apparatus of claim 29, wherein the random access response detection window configuration for the first class of UEs comprises: the length information of the random access response detection window and/or the initial position information of the random access response detection window;

31. The random access response transmitting apparatus of claim 29, wherein the random access response detection window configuration for the second type of UE comprises:

32. The random access response transmitting apparatus of claim 31, wherein the starting position information of the random access response detection window comprises: the starting position information of the random access response detection window corresponding to the first random access channel resource in the random access channel resource set and the interval information of two adjacent random access response detection windows.