WO2023024675A1

WO2023024675A1 - Random access method, network side device, terminal, apparatus, and storage medium

Info

Publication number: WO2023024675A1
Application number: PCT/CN2022/099993
Authority: WO
Inventors: 周雷; 高雪娟; 邢艳萍; 曾二林; 苗金华
Original assignee: 大唐移动通信设备有限公司
Priority date: 2021-08-24
Filing date: 2022-06-21
Publication date: 2023-03-02
Also published as: CN115884424A

Abstract

Embodiments of the present disclosure provide a random access method, a network side device, a terminal, an apparatus, and a storage medium. The method comprises: a network side device sends a first message to a terminal, the first message comprising an association relationship between random access channel occasion (RO) resources used by terminals having different features and a value set for a radio network temporary identity (RNTI), and value sets for the RNTI associated with the RO resources used by the terminals having different features being different. According to the random access method, the network side device, the terminal, the apparatus, and the storage medium provided in the embodiments of the present disclosure, the identification of multiple UEs having different features in a random access phase is supported by using the association relationship between the RO resources and the value set for the RNTI, and the value sets for the RNTI associated with the RO resources used by the UEs having different features are different, thereby reducing the collision probability in a RACH process and the access delay of the UEs.

Description

Random access method, network side equipment, terminal, device and storage medium

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 2021109771599 filed on August 24, 2021, and the title of the invention is "random access method, network side equipment, terminal, device and storage medium", all of which are incorporated by reference Incorporated into this article.

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a random access method, network side equipment, terminal, device, and storage medium.

Background technique

Many features of the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP) New Radio (New Radio, NR) R17 need to be identified in the random access channel (Random Access Channel, RACH), so it is necessary to use The Physical Random Access Channel (PRACH) distinguishes different characteristics.

One implementation method is to distinguish features through random access channel occasion (Random Access Channel occasion, RO) resources, RO resources support time division multiplexing (Time Division Multiplexing, TDM) and frequency division multiplexing (Frequency Division Multiplexing, FDM) ) Two multiplexing methods.

For the FDM multiplexing mode, the current frequency domain RO index (Index) supports up to 8. If the time-domain resource configurations of ROs with two different characteristics are the same, even though the ROs of the two characteristics are separated in the frequency domain, the user equipment (UE) of the two characteristics selects the same RO index in the frequency domain And preamble (Preamble) index. In the case that the frequency domain resources corresponding to the RO index are different, the random access radio network temporary identity (Random Access Radio Network Temporary Identity, RA-RNTI) calculated in the prior art is the same, which may lead to terminal access failure , and the access delay is large.

Contents of the invention

Embodiments of the present disclosure provide a random access method, network side equipment, terminal, device, and storage medium, to solve the defect of long terminal access delay in the prior art, and to implement UEs with different characteristics in the random access stage identification and reduction of UE access delay.

In a first aspect, an embodiment of the present disclosure provides a random access method, including:

The network side device sends a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; the terminal with different characteristics uses The value sets of the RNTI associated with the RO resource are different.

Optionally, the RNTI value sets associated with the RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the first RNTI value set; and RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the first RNTI value set.

Optionally, the value sets of the RO indexes corresponding to the RO resources used by terminals with different characteristics are different.

Optionally, the first message includes the starting sequence number of the RO index corresponding to the RO resource used by the terminal of each characteristic, and the total number of RO resources used by the terminal of each characteristic in the frequency domain.

Terminals with different characteristics are divided based on the second RNTI value set; and the RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the second RNTI value set; A proper subset of the second RNTI value set is the first RNTI value set.

Optionally, the value sets of the RO indexes corresponding to the RO resources used by terminals with different characteristics are the same.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and A represents the Constants associated with terminal characteristics and/or random access methods.

Optionally, the value set of the RNTI associated with the RO resources used by the terminals with different characteristics is indicated by a first identifier.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

V_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id+B, when f_id≥8;

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and B represents the Constants associated with random access methods.

In the second aspect, the embodiment of the present disclosure also provides a random access method, including:

The terminal determines the value set of the radio network temporary identifier RNTI corresponding to the random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by the terminal with different characteristics is different.

Optionally, the method also includes:

Obtaining a first message sent by the network side device; the first message includes an association relationship between random access channel opportunities RO resources used by terminals with different characteristics and value sets of radio network temporary identifiers RNTI.

Terminals with different characteristics are divided based on the target RNTI value set; and the RNTI value set associated with the RO resource used by the terminal with different characteristics is a mutually disjoint subset of the target RNTI value set; the target The RNTI value set is the first RNTI value set or the second RNTI value set.

Optionally, the first message includes an association relationship between a target index and an RNTI value set; terminals with different characteristics correspond to different target indexes, and different target indexes correspond to different RNTI value sets; the target identifier is the first ID or the second ID.

Optionally, when the terminal uses a four-step random access method for random access, and the terminal corresponds to multiple different first identities, the method further includes:

The terminal first matches the synchronization signal block SSB according to the increasing order of the preamble index from small to large, then according to the increasing order of the RO index from small to large, and finally according to the increasing order of the first identifier from small to large.

Optionally, when the terminal uses a two-step random access method for random access, and the terminal corresponds to multiple different first identities, the method further includes:

The terminal firstly matches the physical uplink shared channel PUSCH resource according to the ascending order of the preamble index, then according to the ascending order of the RO index, and finally according to the ascending order of the first identifier.

In the third aspect, the embodiment of the present disclosure also provides a network side device, including a memory, a transceiver, and a processor:

The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

Send the first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; the RO resource used by the terminal with different characteristics The value sets of associated RNTIs are different.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Optionally, the set of RNTI values associated with the RO resources used by terminals with different characteristics is indicated by a second identifier, where the second identifier includes an RO index with a sequence number from k to k+7 and a sequence number greater than or equal to k +8 RO index.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

In a fourth aspect, an embodiment of the present disclosure further provides a terminal, including a memory, a transceiver, and a processor:

Determine the value set of the wireless network temporary identifier RNTI corresponding to the used random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by terminals with different characteristics is different.

Optionally, the operations also include:

Optionally, the first message includes an association relationship between a target identifier and an RNTI value set; terminals with different characteristics correspond to different target identifiers, and different target identifiers correspond to different RNTI value sets; the target identifier is the first ID or the second ID.

Optionally, when the terminal uses a four-step random access method to perform random access, and the terminal corresponds to multiple different first identities, the operation further includes:

Optionally, when the terminal uses a two-step random access method to perform random access, and the terminal corresponds to multiple different first identities, the operation further includes:

In the fifth aspect, the embodiment of the present disclosure further provides a random access device, including:

The sending unit is configured to send a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; The value sets of the RNTI associated with the RO resource used by the terminal are different.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

In a sixth aspect, an embodiment of the present disclosure further provides a random access device, including:

The determination unit is configured to determine the value set of the wireless network temporary identifier RNTI corresponding to the used random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by terminals with different characteristics is different.

Optionally, the device further includes an acquisition unit;

The obtaining unit is used to obtain the first message sent by the network side device; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI .

Optionally, when the terminal uses a four-step random access method for random access, and the terminal corresponds to a plurality of different first identities, the device further includes a first matching unit;

The first matching unit is used to firstly match the synchronization signal block SSB according to the ascending order of the preamble index, then according to the ascending order of the RO index, and finally match the synchronization signal block SSB according to the ascending order of the first identifier.

Optionally, when the terminal uses a two-step random access method for random access, and the terminal corresponds to multiple different first identities, the device further includes a second matching unit;

The second matching unit is configured to first follow the order of increasing preamble index from small to large, then follow the order of increasing RO index from small to large, and finally perform the physical uplink shared channel PUSCH resource according to the order of increasing first identifier from small to large match.

In the seventh aspect, the embodiments of the present disclosure further provide a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned first aspect. and the steps of the random access method described in the second aspect.

In an eighth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned first aspect and the second aspect. The steps of the random access method described in the second aspect.

The random access method, network side equipment, terminal, device, and storage medium provided by the embodiments of the present disclosure support the identification of multiple UEs with different characteristics in the random access phase by using the association relationship between RO resources and RNTI value sets. The RNTI value sets associated with the RO resources used by specific UEs are different, thereby reducing the collision probability in the RACH process and the access delay of the UE.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

FIG. 1 is a schematic flow diagram of four-step random access provided by the prior art;

FIG. 2 is a schematic flow diagram of two-step random access provided by the prior art;

FIG. 3 is a schematic flow diagram of multi-featured PRACH resource allocation provided by the prior art;

Fig. 4 is one of the schematic flowcharts of the random access method provided by the embodiment of the present disclosure;

Fig. 5 is one of the schematic diagrams of dividing UEs with different characteristics by using RNTI value sets provided by an embodiment of the present disclosure;

FIG. 6 is the second schematic diagram of dividing UEs with different characteristics by using RNTI value sets provided by an embodiment of the present disclosure;

FIG. 7 is a third schematic diagram of dividing UEs with different characteristics by using RNTI value sets provided by an embodiment of the present disclosure;

FIG. 8 is a fourth schematic diagram of dividing UEs with different characteristics by using RNTI value sets provided by an embodiment of the present disclosure;

FIG. 9 is a second schematic flow diagram of a random access method provided by an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a network-side device provided by an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

FIG. 12 is one of the schematic structural diagrams of a random access device provided by an embodiment of the present disclosure;

FIG. 13 is a second structural schematic diagram of a random access device provided by an embodiment of the present disclosure.

Detailed ways

First, some English or abbreviations that will appear in the embodiments of the present disclosure are explained:

Random access (Random Access, RA);

Short data transfer (Short Data Transfer, SDT);

Coverage Enhancement (Coverage Enhancement, CE);

Reduced Capability (Reduced Capability, Redcap);

Wireless Access Network (RAN);

Long Term Evolution (LTE);

Random Access Response (Random Access Response, RAR);

Radio Resource Control (RRC);

Cell Radio Network Temporary Identity (C-RNTI);

Media Access Control (MAC);

Control Unit (Control Element, CE);

Common Control Channel (Common Control Channel, CCCH);

Physical Downlink Control Channel (PDCCH);

Physical Uplink Shared Channel (PUSCH);

Physical Resource Block (PRB);

Normal Uplink (NUL);

Supplementary Uplink (SUL);

Synchronization Signal Block Synchronization Signal Block, SSB);

The serial number of the random access channel occasion resource index (Random Access Channel occasion Identity, ROID).

Due to many features of 3GPP NR R17, such as SDT, CE, Redcap, RAN slicing (Slicing), etc., all need to be identified in the RACH phase.

LTE random access and NR conventional random access are divided into contention random access and non-contention random access. Among them, the competitive random access is further divided into four-step random access and two-step random access.

Fig. 1 is a flow diagram of four-step random access provided by the prior art. As shown in Fig. 1, four-step random access (4-Step RACH) includes:

Step (Step) 1. The UE sends a message (Msg) 1 to the network side device.

The UE selects a random access preamble and a PRACH resource, and uses the PRACH resource to send the selected random access preamble to the network side device.

Step 2. The network side device sends Msg2 to the UE.

The network side device receives the random access preamble sent by the UE, and sends the RAR to the UE.

Step 3. The UE sends Msg3 to the network side device.

The UE sends an uplink transmission on the uplink scheduling grant (Grant) specified by Msg2. The content of the uplink transmission in Msg3 is different for different random accesses. For example, for initial access, Msg3 transmits an RRC connection establishment request, idle (Idle) state and The UE in the Connected state transmits the C-RNTI MAC CE in Msg3. In the Msg3 phase, what the UE sends to the network side device is the unique identifier of the UE, which is used by the network side device to determine the UE.

Step 4. The network side device sends Msg4 to the UE.

The network side device sends a contention resolution message to the UE, and the UE judges whether the random access is successful according to Msg4. For a UE in an idle state or an inactive (Inactive) state, Msg4 carries the CCCH MAC CE containing the RRC signaling content of Msg3; for a UE in a connected state, Msg4 uses the PDCCH of the UE's C-RNTI for scheduling, and the PDCCH implements Competitive resolution. For a UE in an idle state or an inactive state, after the contention is resolved, the C-RNTI is transformed into a unique UE identifier of the UE in the cell.

Figure 2 is a schematic diagram of the two-step random access process provided by the prior art. As shown in Figure 2, in the new generation wireless network NR system, a two-step competitive random access process is derived on the basis of 4-Step RACH (2 -Step RACH), including:

Step 1. The UE sends a MsgA to the network side device.

MsgA is the preamble transmission on the PRACH and the data transmission on the PUSCH, which is equivalent to Msg1 and Msg3 in the 4-Step RACH.

Step 2. The network side device sends the MsgB to the UE.

MsgB is a random access response and contention resolution message, which is equivalent to Msg2 and Msg4 in 4-Step RACH. In MsgB, since it contains contention resolution messages, the size of MsgB must be different from Msg2.

In the 2-Step RACH process, the network side device may send various random access response messages or data messages to the UE, for example, random access success (Success) response, fallback (Fallback) response to 4-Step, random Access sequence number responses, data messages, etc.

There are currently two ways to distinguish different characteristics in the RACH phase. One is to use the RO resource to distinguish, and the other is to use the preamble index to distinguish. Among them, for distinguishing by using RO resources, two multiplexing modes of TDM and FDM are currently supported.

Fig. 3 is a schematic flow diagram of multi-featured PRACH resource allocation provided by the prior art. As shown in Fig. 3, the abscissa represents the time domain t, and the ordinate represents the frequency domain f. For FDM multiplexing, the current frequency domain RO index is the most Support up to 8. If the time-domain resource configurations of two ROs with different characteristics are the same, for example, the configurations of the start symbol (Start Symbol) and the start slot index (Start Slot Index) are the same, even if the ROs of the two different characteristics are separate, but in the case that two UEs with different characteristics select the same frequency-domain RO index, the frequency-domain resources corresponding to the same frequency-domain RO index are different but the preamble index is the same.

Taking RO0 in Figure 3 as an example, different characteristics have RO0 and the corresponding frequency domain resources are different, but the same preamble index will result in the same RA-RNTI calculation results, which leads to the fact that UEs with different characteristics can be distinguished even in Msg1/MsgA , but the RAR stages may collide with each other, resulting in UE access failure. The UE needs to re-access, which increases the delay of UE access.

In order to solve the above-mentioned problems in the prior art, embodiments of the present disclosure provide a random access method, network side equipment, terminal, device, and storage medium.

The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

Fig. 4 is one of the flow diagrams of the random access method provided by the embodiment of the present disclosure. As shown in Fig. 4, the embodiment of the present disclosure provides a random access method, the execution subject of which is a network side device, and the method includes:

Step 401, the network side device sends a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; different characteristics The value sets of the RNTI associated with the RO resources used by different terminals are different.

Specifically, the first message sent by the network side device to the UE may be a RAR, which contains the association relationship between RO resources used by UEs with different characteristics and RNTI value sets, and UEs with different characteristics The value sets of the RNTI associated with the used RO resources are different.

The network side device can identify RO resources in the frequency domain for UEs with different characteristics through the RO start sequence number index in Msg1/MsgA and the RRC signaling indication of Msg1/MsgA-FDM. Among them, the RO start sequence number index is used to indicate the start sequence number k of the RO resources in the frequency domain, Msg1/MsgA-FDM is used to indicate the total number m of RO resources in the frequency domain, and the RO index numbers the ROs according to the PRB index, specifically : k, k+1, ..., k+m-1.

Each RO index corresponds to an associated RNTI value set, and the RNTI value set is the value set of RA-RNTI/MsgB-RNTI. For the determination of the value set of RNTI, UEs with different characteristics can be divided by the currently used RA-RNTI value range (1, 17920) and MsgB-RNTI value range (17921, 35840); The value range of the RNTI is extended, for example, to (1, 65522), so as to divide different UEs.

For example, the RO index in the frequency domain allocated by Feature A is 1, and the value set of the corresponding RNTI is (1, 4480).

For example, the RO index in the frequency domain allocated by Feature B is 2, and the corresponding RNTI value set is (35841, 53760).

UEs with different characteristics are assigned different RO indexes in the frequency domain, and RNTI value sets associated with RO resources are different, so as to identify UEs with different characteristics.

The random access method provided by the embodiments of the present disclosure uses the association relationship between RO resources and RNTI value sets to support the identification of multiple UEs with different characteristics during the random access phase, and the RNTI values associated with RO resources used by UEs with different characteristics The value sets are different, thereby reducing the collision probability in the RACH process and the access delay of the UE.

Specifically, the UEs with different characteristics are divided by the first RNTI value set, and the RNTI value sets associated with the RO resources used by the UEs with different characteristics are mutually disjoint subsets of the first RNTI value set.

The first RNTI value set is the currently used RA-RNTI value set (1, 17920) and MsgB-RNTI value set (17921, 35840). Currently, the PRACH frequency domain RO index indicates up to 8, and the corresponding RO index number can only be 0-7.

The existing RA-RNTI/MsgB-RNTI calculation formula is:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

Among them, V_RNTI indicates the value of RNTI, s_id indicates the index of the first OFDM symbol of the RO, t_id indicates the index of the first time slot of the RO in a system frame, f_id indicates the RO index, and ul_carrier_id indicates the uplink carrier identifier.

Among them, the value set of s_id is [0, 14], the value set of t_id is [0, 80], and the value set of f_id is [0, 8), so as to avoid the value of RNTI exceeding 65522, the value of ul_carrier_id The value is 0 or 1, 0 means NUL carrier, 1 means SUL carrier.

Based on the existing RA-RNTI/MsgB-RNTI calculation formula, at the same time, the starting sequence number k of the RO resources in the frequency domain is indicated by the RO starting sequence number index, and the total number m of RO resources in the frequency domain is indicated by Msg1/MsgA-FDM, so that Determine the sequence number of the RO index, instead of using 0 as the starting sequence number of all RO resources in the frequency domain. Determine the corresponding RA-RNTI/MsgB-RNTI value set according to the RO time-domain resource information allocated to the UE for each characteristic.

Since the serial number of the RO index in the frequency domain allocated by UEs of each characteristic is different, the corresponding RA-RNTI/MsgB-RNTI value sets are also different.

For example, in the prior art, in the four-step random access 4-Step RACH process, the sequence numbers assigned to the RO index are 0-3, and the corresponding RA-RNTI value sets are respectively:

When the uplink carrier identifier is 0, the value set of RA-RNTI is (1, 4480);

When the uplink carrier identifier is 1, the value set of RA-RNTI is (8961, 13440).

In the embodiment of the present disclosure, the starting sequence number k of the RO resources in the frequency domain is indicated by the RO starting sequence number index to be 4, so that the sequence numbers of the allocated RO indexes are 4-7, and the value sets corresponding to RA-RNTI are:

When the uplink carrier identifier is 0, the value set of RA-RNTI is (4481, 8960);

When the uplink carrier identifier is , the value set of RA-RNTI is (13441, 17920).

Fig. 5 is one of the schematic diagrams of dividing UEs with different characteristics by using the RNTI value set provided by the embodiment of the present disclosure. As shown in Fig. 5, the serial numbers of the assigned RO indexes in the four-step random access process are 0-3. In the disclosed embodiment, the sequence numbers of the RO indexes assigned by the random access procedure are 4-7.

For the serial numbers of the RO index of feature 1 of 4-Step RACH and feature 2 of 2-Step RACH are assigned RO0-RO3, then RO4-RO7 in 4-Step RACH and 2-Step RACH can be assigned to feature 3 and feature 4.

For feature 3, the RO start sequence number index in Msg1 indicates that the start sequence number k of the RO index is 4, and the total number m of RO indexes is indicated as 4 by Msg1-FDM. Determine the corresponding RA-RNTI through the RA-RNTI calculation formula corresponding to 4-Step RACH.

For feature 4, the start sequence number k of the RO index is indicated as 4 by the RO start sequence number index in MsgA, and the total number m of RO indexes is indicated by Msg1-FDM as 4. Determine the corresponding MsgB-RNTI through the RA-RNTI calculation formula corresponding to 2-Step RACH.

As shown in Figure 5, value set 501: (1, 4480) corresponds to RO0-RO3 assigned to feature 1 in the 4-Step RACH process, and the uplink carrier identifier is 0; value set 502: (4481, 8960) corresponds to In the 4-Step RACH process, RO4-RO7 is allocated to feature 3, and the uplink carrier ID is 0; value set 503: (8961, 13440) corresponds to RO0-RO3, and the uplink carrier ID is allocated to feature 1 in the 4-Step RACH process is 1; value set 504: (13440, 17920) corresponds to the allocation of RO4-RO7 to feature 3 in the 4-Step RACH process, and the uplink carrier identifier is 1.

Value set 505: (17921, 22400) corresponds to the allocation of RO0-RO3 to feature 2 in the 2-Step RACH process, and the uplink carrier identifier is 0; value set 506: (22401, 26880) corresponds to the 2-Step RACH process to Feature 4 is assigned RO4-RO7, and the uplink carrier ID is 0; value set 507: (26881, 31360) corresponding to the 2-Step RACH process, RO0-RO3 is allocated to feature 2, and the uplink carrier ID is 1; value set 508 : (31361, 35840) corresponds to the allocation of RO4-RO7 to feature 4 in the 2-Step RACH process, and the uplink carrier identifier is 1.

Preferably, the RA-RNTI/MsgB-RNTI value set can also be indicated by the first identifier, without combining the new characteristic RACH access type with the RA-RNTI value set and MsgB-RNTI value set and corresponding Corresponding to the calculation update, the configuration is more flexible. The first identifier is an index other than the RO index, which may be a resource set (Resource Set) index, a frequency domain resource (Frequency Resource) index, or the like.

For example, a resource set index of 0 indicates that the RA-TNTI value set is (1,17920) and the corresponding calculation formula; a resource set index of 1 indicates that the MsgB-RNTI value set is (17921,35840) and the corresponding calculation formula.

The random access method provided by the embodiments of the present disclosure divides terminals with different characteristics through the first RNTI value set, and the RNTI value sets associated with RO resources matched by terminals with different characteristics are mutually disjoint, so different Unique UEs have different RNTIs in the RAR during the random access process, which reduces the collision probability during the RACH process and the UE's access delay.

Specifically, the network side device can identify RO resources in the frequency domain for UEs with different characteristics through the RO start sequence number index in Msg1/MsgA and the RRC signaling indication of Msg1/MsgA-FDM. Among them, the RO start sequence number index is used to indicate the start sequence number k of the RO resources in the frequency domain, Msg1/MsgA-FDM is used to indicate the total number m of RO resources in the frequency domain, and the RO index numbers the ROs according to the PRB index, specifically : k, k+1, ..., k+m-1.

Therefore, the value sets of RO indexes corresponding to RO resources used by UEs with different characteristics are different, that is, UEs with each characteristic have their corresponding RO indexes, which are: {k, k+1, ..., k+m-1 }, where k is the start sequence number of the RO resources in the frequency domain indicated by the RO start sequence number index in Msg1/MsgA, and m is the total number of RO resources in the frequency domain indicated by Msg1/MsgA-FDM.

The random access method provided by the embodiment of the present disclosure indicates the starting sequence number of the RO resources in the frequency domain through the RO starting sequence number index in Msg1/MsgA, instead of all the starting sequence numbers of the RO resources being 0, which reduces the different characteristics The probability that the RO index assigned to the UE is the same, which further reduces the collision probability in the RACH process.

Specifically, the first message, ie, the RAR message, includes the start sequence number of the RO resource on the frequency domain indicated by the RO start sequence number index in Msg1/MsgA and the total number of RO resources on the frequency domain indicated by Msg1/MsgA-FDM.

Specifically, the UEs with different characteristics are divided by the second RNTI value set, and the RNTI value sets associated with the RO resources used by the UEs with different characteristics are mutually disjoint subsets of the second RNTI value set, and The first RNTI value set is a proper subset of the target value set.

The first RNTI value set is the currently used RA-RNTI value set (1, 17920) and MsgB-RNTI value set (17921, 35840). The second RNTI value set is a value set obtained by extending the first RNTI value set. Preferably, the second RNTI value set may be (1, 65522).

After expanding the RNTI value set, the new RA-RNTI/MsgB-RNTI calculation formula becomes:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Among them, the value set of s_id is [0, 14], the value set of t_id is [0, 80], the value set of f_id is preferably [0, 12], so as to avoid the value of RNTI exceeding 65522, ul_carrier_id The value of is 0 or 1, 0 indicates a NUL carrier, and 1 indicates a SUL carrier.

According to the new RA-RNTI/MsgB-RNTI calculation formula, establish the association between RO time-frequency domain resources and RA-RNTI/MsgB-RNTI value sets, and then allocate RO time-frequency domain resource information according to each characteristic UE Obtain the corresponding RA-RNTI/MsgB-RNTI.

The extended RNTI value set can be indicated by means of the first identifier or the extended RO index. The first identifier may be a resource set index, a frequency domain resource index, and the like.

For example, the extended RNTI value range is indicated by the resource set index. When the resource set index is 0, the corresponding RNTI value set is (35841, 53760); when the resource set index is 1, the corresponding RNTI value is The set is (53761, 65522).

The second RNTI value set is indicated by extending the RO index, usually the serial number of the RO index is 0-7, and the serial number of the RO index is extended to K _MAX , K _MAX >8, if the serial number of the RO index of a certain characteristic takes a value The range is (8, K _MAX ], and the corresponding RNTI value set is (35841, +∞). Preferably, K _MAX ≤ 12, and the corresponding RNTI value set is (35841, 65522).

In the random access method provided by the embodiments of the present disclosure, by extending the RNTI value set, the expanded RNTI value set is used to divide UEs with different characteristics, and the RNTI value sets associated with RO resources matched by UEs with different characteristics are: are mutually disjoint, so UEs with different characteristics have different RNTIs in the RAR during the random access process, reducing the collision probability during the RACH process and the access delay of the UE.

Specifically, when using the extended second RNTI value set to divide UEs with different characteristics, the RNTI value set associated with the RO resources used by UEs with different characteristics can be indicated by a first identifier other than the RO index .

The first identifier may be a resource set index, a frequency domain resource index, and the like.

Fig. 6 is the second schematic diagram of dividing UEs with different characteristics by using the RNTI value set provided by the embodiment of the present disclosure. As shown in Fig. 6 , the frequency domain resource index indicates the RNTI value set, and all characteristics share the second RNTI value A set of values and can be configured by the network side device.

The network side device indicates the start sequence number k of the RO resources in the frequency domain through the RO start sequence number index in Msg1/MsgA, and Msg1/MsgA-FDM indicates the total number m of RO resources in the frequency domain.

The calculation formula of RA-RNTI is:

RA_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4; the corresponding RNTI value set is (35841, 53760).

The calculation formula of MsgB-RNTI is:

MsgB_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×6; the corresponding RNTI value set is (53761, 65522).

Among them, the value set of s_id is [0, 14], the value set of t_id is [0, 80], the value set of f_id is [0, 8], the value of ul_carrier_id is 0 or 1, 0 means NUL Carrier, 1 means SUL carrier.

In part (a) of Figure 6, the abscissa is the time domain, and the ordinate is the frequency domain. The frequency domain starting points (Frequency The sorting result of Start) is Frequency Start1<Frequency Start2<Frequency Start3. According to the sorting result, it is determined that the frequency domain resource index corresponding to Frequency Start1 is 2; the frequency domain resource index corresponding to Frequency Start2 is 1; the frequency domain resource index corresponding to Frequency Start3 is 0.

In part (b) of Figure 6, for the frequency domain resource index is 0, when the uplink carrier identifier is 0, the value set of RA-RNTI corresponding to 4-Step RACH is value set 601: (1, 17920 ), the calculation formula of RA-RNTI is:

RA_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id.

For the frequency domain resource index is 1, when the uplink carrier identifier is 0, the value set of RA-RNTI corresponding to 4-Step RA-SDT is the value set 602: (35841, 53760), and the calculation formula of RA-RNTI is:

RA_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4.

For the frequency domain resource index is 2, the value set of RA-RNTI corresponding to 4-Step CE is value set 603: (53761, 62720), and the calculation formula of RA-RNTI is:

RA_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×6.

The UE obtains the RA-RNTI/MsgB-RNTI according to the above RA-RNTI calculation method, and uses the RA-RNTI/MsgB-RNTI to demodulate the PDCCH corresponding to the RAR.

Even if UEs with different characteristics match the same RO index and the same preamble, but their corresponding RNTI value sets are different, UEs with different characteristics can be identified in RAR.

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

After extending the RNTI value set, even if the start sequence numbers of RO resources in the frequency domain are still 0, and the total number m of RO resources in the frequency domain is the same, due to the characteristics of terminals and/or random access The constant A associated with the method is different, even if the value set of the RO index corresponding to the RO resources used by terminals with different characteristics is the same, they are all {0,1,...,m-1}, because the value of A is different, the calculated The RNTI will also be different, and UEs with different characteristics can still be divided.

The random access method provided by the embodiments of the present disclosure uses the first identifier to indicate the extended RNTI value set. Even if the RO resources corresponding to the RO resources used by UEs with different characteristics have the same RO index, the value of A is different due to the different first identifiers. Different, UEs with different characteristics can still be divided, reducing the collision probability in the RACH process and the access delay of UEs.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Specifically, when using the extended second RNTI value set to divide UEs with different characteristics, the RNTI value sets associated with the RO resources used by the UEs with different characteristics can be indicated by the extended RO index. The second identifier may be an expanded RO index.

Usually, the RO index indication supports up to 8, and its serial number is from k to k+7, and k is a natural number. The sequence number of the RO index is extended to K _MAX , and K _MAX >k+8, then the range of the value set of the RNTI indicated by the RO index is also expanded accordingly.

For example, the sequence number of the RO index is 0-7, and the sequence number of the RO index is extended to K _MAX , K _MAX >8, if the value set of the sequence number of the RO index of a certain feature is (8, K _MAX ], the corresponding RNTI The minimum value set is 35841. Preferably, K _MAX ≤ 12, the corresponding RNTI value set (35841, 65522).

FIG. 7 is the third schematic diagram of dividing UEs with different characteristics by using RNTI value sets provided by an embodiment of the present disclosure. As shown in FIG. 7 , the RNTI value sets are indicated by extending the RO index. The value range of the sequence number of the index is (8, K _MAX ], and the corresponding RNTI value set is (35841, 65522).

The calculation formula of RA-RNTI is:

RA_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id;

The calculation formula of MsgB-RNTI is:

MsgB_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id+14×80×2;

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the RO index, and the value set of f_id is (8, K _MAX ], ul_carrier_id indicates the uplink carrier ID.

In part (a) of Figure 7, the abscissa is the time domain, the ordinate is the frequency domain, and the network side equipment has three characteristics: 4-Step RACH, 4-Step RA-SDT, and 4-Step CE are respectively configured RO resource. The maximum supported number of RO indexes configured on the network side device is 15, and each feature is configured with 4 RO indexes, among which 4-Step RACH corresponds to the sequence number of the RO index is 0-3, and 4-Step RA-SDT corresponds to the number of the RO index The serial number is 8-11, and the serial number of 4-Step CE corresponding to the RO index is 12-15.

In part (b) of Figure 7, for the sequence numbers 0-3 of the RO index assigned by the 4-Step RACH, when the uplink carrier identifier is 0, the corresponding RNTI value set is the value set 701: (1, 4480 ), the corresponding RA-RNTI calculation formula is:

RA_RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id; the value set of f_id is [0, 8);

For the sequence numbers 8-11 of the RO index allocated by 4-Step RA-SDT and the sequence numbers 12-15 of the RO index allocated by 4-Step CE, when the uplink carrier identifier is 0, the corresponding RNTI value sets are value sets 702: (35841, 40320) and value set 703: (40321, 44800), the corresponding RA-RNTI calculation formula is:

RA_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id; the value set of f_id is [8, 15];

Among them, RA_RNTI indicates the value of RNTI, s_id indicates the index of the first OFDM symbol of the RO, t_id indicates the index of the first time slot of the RO in a system frame, f_id indicates the RO index, and ul_carrier_id indicates the uplink carrier identifier.

Wherein, the value set of s_id is [0, 14], the value set of t_id is [0, 80], the value of ul_carrier_id is 0 or 1, 0 indicates a NUL carrier, and 1 indicates a SUL carrier.

FIG. 8 is a fourth schematic diagram of dividing UEs with different characteristics by using RNTI value sets provided by an embodiment of the present disclosure. As shown in FIG. 8 , the RNTI value sets are indicated by extending the RO index.

In part (a) of Figure 8, the abscissa is the time domain, the ordinate is the frequency domain, and the network side equipment has three characteristics: 2-Step RACH, 2-Step RA-SDT and 2-Step CE are respectively configured RO resource. The maximum supported number of RO indexes configured on the network side device is 15, and each feature is configured with 4 RO indexes, among which 2-Step RACH corresponds to the sequence number of the RO index is 0-3, and 2-Step RA-SDT corresponds to the number of the RO index The serial number is 8-11, and the serial number of 2-Step CE corresponding to the RO index is 12-15.

In part (b) of Figure 8, for the sequence number 0-3 of the RO index allocated by 2-Step RACH, when the uplink carrier identifier is 0, the corresponding RNTI value set is the value set 801: (17921, 22400 ), the corresponding calculation formula of MsgB-RNTI is:

MsgB_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id; the value set of f_id is [0, 8);

For the sequence numbers 8-11 of the RO index allocated by 4-Step RA-SDT and the sequence numbers 12-15 of the RO index allocated by 4-Step CE, when the uplink carrier identifier is 0, the corresponding RNTI value sets are value sets 802: (53761, 58240) and value collection 803: (58241, 62720), the corresponding calculation formula of MsgB-RNTI is:

MsgB_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id; the value set of f_id is [8, 15];

The network side device can identify RO resources in the frequency domain for UEs with different characteristics through the RO start sequence number index in Msg1/MsgA and the RRC signaling indication of Msg1/MsgA-FDM. Among them, the RO start sequence number index in Msg1/MsgA is used to indicate the start sequence number k of the RO resource in the frequency domain, Msg1/MsgA-FDM is used to indicate the total number m of RO resources in the frequency domain, and the RO index is assigned to the RO resource according to the PRB index Numbering, specifically: k, k+1, ..., k+m-1.

Therefore, the value sets of RO indexes corresponding to RO resources used by UEs with different characteristics are different, that is, UEs with each characteristic have their corresponding RO indexes, which are: {k, k+1, ..., k+m-1 }, where k is the starting sequence number of the RO resources in the frequency domain indicated by the RO starting sequence number index in Msg1/MsgA, and m is the total number of RO resources in the frequency domain indicated by Msg1/MsgA-FDM.

The random access method provided by the embodiments of the present disclosure uses the second identifier to indicate the extended RNTI value set, which reduces the probability that UEs with different characteristics are assigned the same RO index, and UEs with different characteristics match the RNTI associated with RO resources. The value sets of are mutually disjoint, further reducing the collision probability in the RACH process.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the identification of the uplink carrier, and B represents the Constants associated with random access methods.

Specifically, when the RO index is not extended, that is, when 0<f_id<8, V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id.

After the RO index is extended, that is, when f_id≥8, V_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id+B, B means Constant associated with the random access method.

FIG. 9 is the second schematic flow diagram of the random access method provided by the embodiment of the present disclosure. As shown in FIG. 9 , the embodiment of the present disclosure provides a random access method, the execution subject of which is UE, and the method includes:

Step 901, the terminal determines the value set of the wireless network temporary identifier RNTI corresponding to the RO resource of the used random access channel opportunity based on its own characteristics; the value set of the RNTI associated with the RO resource used by terminals with different characteristics is different.

Specifically, the set of RNTI values corresponding to different RO resources can be preconfigured by the UE before the random access process, or can be configured by the network side device.

The value sets of RNTI associated with RO resources used by UEs with different characteristics are different.

Optionally, the method also includes:

Specifically, when the 4-Step RACH of a certain feature is configured with multiple first identifiers, Msg1PARCH matches the SSB in the following order:

Step 9021, within an RO, match the preamble index with the SSB in ascending order of the preamble index.

Step 9022: After the preamble index in a RO is matched with the SSB, increase the RO index number in the ascending order of the RO index in the first identifier, and then repeat step 9021 until all the preamble indexes in the RO in the first identifier Until it matches with SSB.

Step 9023: Increment the serial number of the first identification in ascending order of the first identification, and repeat steps 9021 and 9022.

Step 9024: After all PRACH resources in the first identifier in the frequency domain corresponding to a time domain resource index in a slot (Slot) are matched with the SSB, add the time domain resource index.

Step 9025: After all PRACH resources on all time domain resource indexes in a time slot are matched with the SSB, increase the time slot index.

Specifically, when the 2-Step RACH of a certain feature is configured with multiple first identifiers, MsgA PARCH matches MsgA PUSCH in the following order:

Step 9031. In one RO, match the MsgA PUSCH according to the increasing order of the preamble index from small to large. The MsgA PUSCH resources include PUSCH timing and demodulation reference signal resources.

Step 9032: After the preamble index in a RO is matched with the PUSCH, increase the RO index number in ascending order of the RO index in a first identifier, and then repeat step 9031 until all the preamble indexes in the RO in the first identifier Until it matches with PUSCH.

Step 9033: Increment the serial number of the first identification in ascending order of the first identification, and repeat steps 9031 and 9032.

Step 9034: After all the PRACH resources in the first identifier in the frequency domain corresponding to a time domain resource index in a time slot are matched with the PUSCH, add the time domain resource index.

Step 9025: After all PRACH resources on all time-domain resource indexes in a time slot are matched with PUSCH, increase the time slot index.

FIG. 10 is a schematic structural diagram of a network-side device provided by an embodiment of the present disclosure. As shown in FIG. 10 , the network-side device includes a memory 1001, a transceiver 1002, and a processor 1003;

The memory 1001 is used to store computer programs; the transceiver 1002 is used to send and receive data under the control of the processor 1003; the processor 1003 is used to read the computer programs in the memory 1101 and perform the following operations:

The transceiver 1002 is used for receiving and sending data under the control of the processor 1003 .

Wherein, in FIG. 10 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1003 and various circuits of the memory represented by the memory 1001 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 1002 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media. The processor 1003 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1003 when performing operations.

The processor 1003 can be a central processing unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Optionally, the calculation formula of RNTI is as follows:

V_RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

It should be noted here that the above-mentioned network-side device provided by the embodiments of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment with the network-side device as the execution subject, and can achieve the same technical effect. The same parts and beneficial effects in this embodiment as those in the method embodiment will be described in detail.

FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in FIG. 11 , the terminal includes a memory 1101, a transceiver 1102 and a processor 1103;

The memory 1101 is used to store computer programs; the transceiver 1102 is used to send and receive data under the control of the processor 1103; the processor 1103 is used to read the computer programs in the memory 1101 and perform the following operations:

The transceiver 1102 is configured to receive and send data under the control of the processor 1103 .

Wherein, in FIG. 11 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1103 and various circuits of the memory represented by the memory 1101 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 1102 may be a plurality of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium. For different user equipments, the user interface 1104 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, displays, speakers, microphones, joysticks, and the like.

The processor 1103 is responsible for managing the bus architecture and general processing, and the memory 1101 can store data used by the processor 1103 when performing operations.

Optionally, the processor 1103 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) or CPLD (Complex Programmable Logic Device, complex programmable logic device), and the processor can also adopt a multi-core architecture.

The processor is used to execute any one of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Optionally, the operations also include:

The terminal first matches the MsgA PUSCH resource according to the increasing order of the preamble index from small to large, then according to the increasing order of the RO index, and finally according to the increasing order of the first identifier from small to large.

It should be noted here that the above-mentioned terminal provided by the embodiments of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment with the terminal as the execution subject, and can achieve the same technical effect, so the description of this embodiment will not be repeated here. The same parts and beneficial effects as those in the method embodiment will be described in detail.

FIG. 12 is one of the schematic structural diagrams of a random access device provided by an embodiment of the present disclosure. As shown in FIG. 12 , an embodiment of the present disclosure provides a random access device, including:

The sending unit 1201 is configured to send a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; different characteristics The value sets of the RNTI associated with the RO resources used by different terminals are different.

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Optionally, the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

What needs to be explained here is that the above-mentioned device provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment with the network-side device as the execution subject, and can achieve the same technical effect. Parts and beneficial effects in the embodiment that are the same as those in the method embodiment are specifically described in detail.

FIG. 13 is the second schematic structural diagram of a random access device provided by an embodiment of the present disclosure. As shown in FIG. 13 , an embodiment of the present disclosure provides a random access device, including:

The determination unit 1301 is configured to determine the value set of the wireless network temporary identifier RNTI corresponding to the used random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by terminals with different characteristics is different.

Optionally, the device further includes an acquisition unit;

The first matching unit is configured to firstly match the synchronization signal block SSB in ascending order of the preamble index, then in ascending order of the RO index, and finally in ascending order of the first identifier.

The second matching unit is used to firstly match the MsgA PUSCH resource according to the increasing order of the preamble index from small to large, then according to the increasing order of the RO index, and finally to match the MsgA PUSCH resource according to the increasing order of the first identifier.

It should be noted here that the above-mentioned device provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiment with the terminal as the execution subject, and can achieve the same technical effect. The same parts and beneficial effects as those in the method embodiment will be described in detail.

It should be noted that the division of units/modules in the embodiments of the present disclosure is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit/module in each embodiment of the present disclosure may be integrated into one processing unit/module, each unit/module may exist separately physically, or two or more units/modules may be integrated into one processing unit/module. unit/module. The above-mentioned integrated units/modules can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit/module is implemented in the form of a software function unit/module and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

On the other hand, the embodiments of the present disclosure further provide a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned embodiments. Random access methods, including:

The network side device sends a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; the terminal with different characteristics uses The value sets of RNTI associated with RO resources are different.

or,

It should be noted that: the processor-readable storage medium may be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.) , optical memory (such as CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard drive (SSD)), etc.

In addition, it should be noted that the term "and/or" in the embodiments of the present disclosure describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which may mean: A exists alone, and A exists simultaneously and B, there are three cases of B alone. The character "/" generally indicates that the contextual objects are an "or" relationship.

The terms "first", "second", "object" and the like in the specification and claims of the present disclosure are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that embodiments of the present disclosure can be practiced in sequences other than those illustrated or described herein, and that "first", "second", "object" The objects distinguished by etc. are generally one type, and the number of objects is not limited. For example, there may be one or more first objects.

The term "plurality" in the embodiments of the present disclosure refers to two or more, and other quantifiers are similar.

The technical solutions provided by the embodiments of the present disclosure can be applied to various systems, especially 5G systems. For example, the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet Wireless business (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new air interface (New Radio, NR) system, etc. These various systems include end devices and network devices. The system may also include a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.

The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal equipment may be different. For example, in a 5G system, the terminal equipment may be called User Equipment (User Equipment, UE). The wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal equipment can be a mobile terminal equipment, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (PCS) phone, cordless phone, Session Initiated Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant, PDA) and other devices. Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), and user device (user device), which are not limited in the embodiments of the present disclosure.

The network device involved in the embodiments of the present disclosure may be a base station, and the base station may include multiple cells that provide services for terminals. Depending on the specific application, the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network. Network devices may also coordinate attribute management for the air interface. For example, the network equipment involved in the embodiments of the present disclosure may be a network equipment (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long-term evolution (long term evolution, LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in the 5G network architecture (next generation system), can also be a home evolved base station (Home evolved Node B, HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present disclosure. In some network structures, a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

One or more antennas can be used between network devices and terminal devices for Multi Input Multi Output (MIMO) transmission. MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO (Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.

Those skilled in the art should understand that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure 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, etc.) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each procedure and/or block in the flowchart and/or block diagrams, and combinations of procedures and/or blocks in the flowchart and/or block diagrams can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine, such that instructions executed by the processor of the computer or other programmable data processing equipment produce Means for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.

These processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented The executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and equivalent technologies thereof, the present disclosure also intends to include these modifications and variations.

Claims

A random access method, characterized in that, comprising:

The network side device sends a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; the terminal with different characteristics uses The value sets of the RNTI associated with the RO resource are different.
The random access method according to claim 1, wherein the RNTI value sets associated with the RO resources used by the terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the first RNTI value set; and RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the first RNTI value set.
The random access method according to claim 2, characterized in that the value sets of the RO indexes corresponding to the RO resources used by terminals with different characteristics are different.
The random access method according to claim 3, wherein the first message includes the starting sequence number of the RO index corresponding to the RO resource used by the terminal of each characteristic, and the RO resource used by the terminal of each characteristic The total number of RO resources in the frequency domain.
The random access method according to claim 1, wherein the RNTI value sets associated with the RO resources used by the terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the second RNTI value set; and the RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the second RNTI value set; A proper subset of the second RNTI value set is the first RNTI value set.
The random access method according to claim 5, wherein the set of RNTI values associated with the RO resources used by the terminals with different characteristics is indicated by a first identifier.
The random access method according to claim 6, wherein the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and A represents the Constants associated with terminal characteristics and/or random access methods.
The random access method according to claim 5, wherein the value set of the RNTI associated with the RO resources used by the terminals with different characteristics is indicated by a second identifier, and the second identifier includes a sequence number k The RO index up to k+7 and the RO index whose sequence number is greater than or equal to k+8.
The random access method according to claim 8, wherein the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

V_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id+B, when f_id≥8;

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and B represents the Constants associated with random access methods.
A random access method, characterized in that, comprising:

The terminal determines the value set of the radio network temporary identifier RNTI corresponding to the random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by the terminal with different characteristics is different.
The random access method according to claim 10, wherein the method further comprises:

Obtaining a first message sent by the network side device; the first message includes an association relationship between random access channel opportunities RO resources used by terminals with different characteristics and value sets of radio network temporary identifiers RNTI.
The random access method according to claim 11, wherein the RNTI value sets associated with the RO resources used by the terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the target RNTI value set; and the RNTI value set associated with the RO resource used by the terminal with different characteristics is a mutually disjoint subset of the target RNTI value set; the target The RNTI value set is the first RNTI value set or the second RNTI value set.
The random access method according to claim 11, wherein the first message includes the association relationship between the target identifier and the value set of the RNTI; terminals with different characteristics correspond to different target identifiers, and different target identifiers correspond to A set of different RNTI values; the target identifier is the first identifier or the second identifier.
The random access method according to claim 13, wherein when the terminal uses a four-step random access method for random access, and the terminal corresponds to a plurality of different first identifiers, the Methods also include:

The terminal first matches the synchronization signal block SSB according to the increasing order of the preamble index from small to large, then according to the increasing order of the RO index from small to large, and finally according to the increasing order of the first identifier from small to large.
The random access method according to claim 13, wherein when the terminal uses a two-step random access method for random access, and the terminal corresponds to a plurality of different first identifiers, the Methods also include:

The terminal firstly matches the physical uplink shared channel PUSCH resource according to the ascending order of the preamble index, then according to the ascending order of the RO index, and finally according to the ascending order of the first identifier.
A network side device, characterized in that it includes a memory, a transceiver, and a processor:

The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

Send the first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; the RO resource used by the terminal with different characteristics The value sets of associated RNTIs are different.
The network side device according to claim 16, wherein the RNTI value sets associated with the RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the first RNTI value set; and RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the first RNTI value set.
The network side device according to claim 17, wherein the value sets of RO indexes corresponding to RO resources used by terminals with different characteristics are different.
The network side device according to claim 18, wherein the first message includes the starting sequence number of the RO index corresponding to the RO resource used by the terminal of each characteristic, and the RO index used by the terminal of each characteristic The total number of RO resources in the frequency domain.
The network side device according to claim 16, wherein the RNTI value sets associated with the RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the second RNTI value set; and the RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the second RNTI value set; A proper subset of the second RNTI value set is the first RNTI value set.
The network-side device according to claim 20, wherein the set of RNTI values associated with the RO resources used by terminals with different characteristics is indicated by a first identifier, and the first identifier is other than the RO index logo.
The network side device according to claim 21, wherein the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and A represents the Constants associated with terminal characteristics and/or random access methods.
The network side device according to claim 20, wherein the set of RNTI values associated with the RO resources used by the terminals with different characteristics is indicated by a second identifier, and the second identifier includes sequence numbers from k to The RO index of k+7 and the RO index whose sequence number is greater than or equal to k+8.
The network side device according to claim 23, wherein the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

V_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id+B, when f_id≥8;

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and B represents the Constants associated with random access methods.
A terminal, characterized in that it includes a memory, a transceiver, and a processor:

The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

Determine the value set of the wireless network temporary identifier RNTI corresponding to the used random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by terminals with different characteristics is different.
The terminal according to claim 25, wherein the operations further include:

Obtaining a first message sent by the network side device; the first message includes an association relationship between random access channel opportunities RO resources used by terminals with different characteristics and value sets of radio network temporary identifiers RNTI.
The terminal according to claim 26, wherein the value sets of RNTI associated with RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the target RNTI value set; and the RNTI value set associated with the RO resource used by the terminal with different characteristics is a mutually disjoint subset of the target RNTI value set; the target The RNTI value set is the first RNTI value set or the second RNTI value set.
The terminal according to claim 26, wherein the first message includes the association relationship between target identifiers and RNTI value sets; terminals with different characteristics correspond to different target identifiers, and different target identifiers correspond to different RNTIs value set; the target ID is the first ID or the second ID.
The terminal according to claim 28, wherein when the terminal uses a four-step random access method for random access, and the terminal corresponds to a plurality of different first identifiers, the operation further includes :

The terminal first matches the synchronization signal block SSB according to the increasing order of the preamble index from small to large, then according to the increasing order of the RO index from small to large, and finally according to the increasing order of the first identifier from small to large.
The terminal according to claim 28, wherein when the terminal uses a two-step random access method for random access, and the terminal corresponds to multiple different first identifiers, the operation further includes :

The terminal firstly matches the physical uplink shared channel PUSCH resource according to the ascending order of the preamble index, then according to the ascending order of the RO index, and finally according to the ascending order of the first identifier.
A random access device, characterized in that it includes:

The sending unit is configured to send a first message to the terminal; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI; The value sets of the RNTI associated with the RO resource used by the terminal are different.
The random access device according to claim 31, wherein the value sets of RNTI associated with RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the first RNTI value set; and RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the first RNTI value set.
The random access device according to claim 32, characterized in that the value sets of RO indexes corresponding to RO resources used by terminals with different characteristics are different.
The random access device according to claim 33, wherein the first message includes the starting sequence number of the RO index corresponding to the RO resource used by the terminal of each characteristic, and the RO resource used by the terminal of each characteristic The total number of RO resources in the frequency domain.
The random access device according to claim 31, wherein the value sets of RNTI associated with RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the second RNTI value set; and the RNTI value sets associated with RO resources used by terminals with different characteristics are mutually disjoint subsets of the second RNTI value set; A proper subset of the second RNTI value set is the first RNTI value set.
The random access device according to claim 35, wherein the set of RNTI values associated with the RO resources used by the terminals with different characteristics is indicated by the first identifier.
The random access device according to claim 36, wherein the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+A

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and A represents the Constants associated with terminal characteristics and/or random access methods.
The random access device according to claim 35, wherein the value set of the RNTI associated with the RO resources used by the terminals with different characteristics is indicated by a second identifier, and the second identifier includes a sequence number k The RO index up to k+7 and the RO index whose sequence number is greater than or equal to k+8.
The random access device according to claim 38, wherein the calculation formula of RNTI is as follows:

V_RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id, when 0<f_id<8;

V_RNTI=1+s_id+14×t_id+14×80×(24+f_id)+14×80×(Kmax-8)×ul_carrier_id+B, when f_id≥8;

Among them, V_RNTI represents the value of RNTI, s_id represents the index of the first OFDM symbol of RO, t_id represents the index of the first time slot of RO in a system frame, f_id represents the index of RO, ul_carrier_id represents the uplink carrier identifier, and B represents the Constants associated with random access methods.
A random access device, characterized in that it includes:

The determination unit is configured to determine the value set of the wireless network temporary identifier RNTI corresponding to the used random access channel opportunity RO resource based on its own characteristics; the value set of the RNTI associated with the RO resource used by terminals with different characteristics is different.
The random access device according to claim 40, further comprising an acquisition unit;

The obtaining unit is used to obtain the first message sent by the network side device; the first message includes the association relationship between the random access channel opportunity RO resource used by the terminal with different characteristics and the value set of the wireless network temporary identifier RNTI .
The random access device according to claim 41, wherein the value sets of RNTI associated with RO resources used by terminals with different characteristics are different, including:

Terminals with different characteristics are divided based on the target RNTI value set; and the RNTI value set associated with the RO resource used by the terminal with different characteristics is a mutually disjoint subset of the target RNTI value set; the target The RNTI value set is the first RNTI value set or the second RNTI value set.
The random access device according to claim 41, wherein the first message includes the association relationship between the target identifier and the value set of the RNTI; terminals with different characteristics correspond to different target identifiers, and different target identifiers correspond to A set of different RNTI values; the target identifier is the first identifier or the second identifier.
The random access device according to claim 43, wherein when the terminal uses a four-step random access method for random access, and the terminal corresponds to a plurality of different first identifiers, the The device also includes a first matching unit;

The first matching unit is configured to firstly match the synchronization signal block SSB in ascending order of the preamble index, then in ascending order of the RO index, and finally in ascending order of the first identifier.
The random access device according to claim 43, wherein when the terminal uses a two-step random access method for random access, and the terminal corresponds to a plurality of different first identifiers, the The device also includes a second matching unit;

The second matching unit is configured to first follow the order of increasing preamble index from small to large, then follow the order of increasing RO index from small to large, and finally perform the physical uplink shared channel PUSCH resource according to the order of increasing first identifier from small to large match.
A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute any one of claims 1 to 15. Methods.