TW202025839A - Method used for random access, network device, and terminal device - Google Patents

Abstract

A method used for random access, a network device, and a terminal device, the method comprising: according to detected resource information of a physical uplink shared channel (PUSCH), a network device generating a first random access radio network temporary identifier (RA-RNTI); and the network device using the first RA-RNTI to scramble a cyclic redundancy check (CDC) of a first physical downlink control channel (PDCCH), the first PDCCH being used for scheduling a random access response message during a first random access process.

Description

Method, network equipment and terminal equipment for random access

The embodiments of the present application relate to the field of communications, and in particular to a method, network equipment, and terminal equipment for random access.

In the New Radio (NR) system, in the random access process, the terminal device can send a random access preamble (Preamble) and a physical uplink shared channel (PUSCH) to the network device, among which, The PUSCH carries the identification information of the terminal device, and then the terminal device can detect the physical downlink control channel (Physical Downlink Control Channel, PDCCH), and obtain that the network device is carried in the physical uplink shared channel (Physical Uplink Shared Channel, PDSCH) scheduled by the PDCCH Random Access-Radio Network Temporary Identity (RA-RNTI) that scrambles the PDCCH is generated based on the location of the resource that sends the Preamble.

However, because different terminal devices can use the same Preamble resource to send the Preamble, the terminal device cannot determine which terminal device the received random access response message corresponds to. Therefore, how to make the terminal device correctly receive the Preamble sent by the terminal device corresponds to The random access response message is a question worthy of research.

The embodiments of the present application provide a method, network device, and terminal device for random access, which are beneficial to correctly receiving the random access response message corresponding to the Preamble sent by the terminal device.

In a first aspect, a method for random access is provided, including: a network device generates a first random access wireless network temporary identifier RA-RNTI according to the detected entity uploading the resource information of the shared channel PUSCH; The network device uses the first RA-RNTI to scramble the cyclic redundancy check CRC of the first physical downlink control channel PDCCH, where the first PDCCH is used to schedule random access in the first random access process Respond to the message.

In a second aspect, a method for random access is provided, which includes: the terminal device determines the first random access wireless network temporary identifier RA-RNTI according to the resource information of the PUSCH sent by the first entity uploading and sharing channel; The terminal device detects the first physical downlink control channel PDCCH according to the first RA-RNTI, where the first RA-RNTI is used by the network device to scramble the cyclic redundancy check CRC of the first PDCCH.

In a third aspect, a network device is provided, which is used to execute the foregoing first aspect or any possible implementation of the first aspect. Specifically, the network device includes a unit for executing the foregoing first aspect or any possible implementation of the first aspect.

In one embodiment, the network device includes: a generating module for generating the first random access wireless network temporary identifier RA-RNTI according to the resource information of the shared channel PUSCH uploaded by the detected entity; The scrambling module is used to scramble the cyclic redundancy check CRC of the first physical downlink control channel PDCCH using the first RA-RNTI, where the first PDCCH is used to schedule random access in the first random access process Access response messages.

In an embodiment, the PUSCH resource information includes at least one of the following: PUSCH resource identification ID used for transmitting the PUSCH; the total number of PUSCH resources available for transmitting the PUSCH; The start time domain position information of the target PUSCH resource used; the frequency domain position information of the target PUSCH resource used to send the PUSCH; the total number of start time domain positions of the PUSCH resource that can be used to send the PUSCH; The total number of frequency domain positions of the PUSCH resource for transmitting the PUSCH.

In an embodiment, the start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein the start time slot position information is used for Indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol position information is used to indicate the index of the start symbol where the target PUSCH resource is located.

In an embodiment, the frequency domain location information of the target PUSCH resource is used to indicate the index of the frequency domain location where the target PUSCH resource is located.

In an embodiment, the first random access procedure includes a first step and a second step; in the first step, the terminal device sends a random access preamble and PUSCH to the network device, wherein , The resource used to send the random access preamble and the resource used to send the PUSCH have a corresponding relationship; in the second step, the network device replies a random access response message to the terminal device, The random access response message is the random access preamble and the PUSCH response message.

In an embodiment, the random access response message includes at least one of the following: the identification ID of the random access preamble sent by the terminal device, and the use allocated by the network device to the terminal device For uplink transmission resources, contention resolution messages and time advance TA messages.

In a fourth aspect, a terminal device is provided, which is used to execute the foregoing second aspect or the method in any possible implementation manner of the second aspect. Specifically, the terminal device includes a unit for executing the foregoing second aspect or any possible implementation manner of the second aspect.

In a fifth aspect, a network device is provided. The network device includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementations.

In a sixth aspect, a terminal device is provided. The terminal device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the methods in the second aspect or each of its implementations.

In a seventh aspect, a wafer is provided, which is used to implement any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the chip includes: a processor for calling and running computer programs from the memory, so that the device installed with the chip executes any one of the first aspect to the second aspect or each of the implementations thereof Methods.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute any one of the first aspect to the second aspect or the method in each implementation manner thereof.

In a ninth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute any one of the first aspect to the second aspect or the method in each implementation manner thereof.

In a tenth aspect, a computer program is provided, which when running on a computer, causes the computer to execute any one of the above-mentioned first to second aspects or the methods in each implementation manner thereof.

Based on the above technical solution, the network device can use PUSCH resource information to generate RA-RNTI, and further use the RA-RNTI to scramble the PDCCH, so that when the terminal device uses different PUSCH resources to send PUSCH, different RA-RNTIs are generated , So that the terminal device can correctly receive the random access response message corresponding to the Preamble sent by the terminal device.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, and broadband code division multiple access Take (Wideband Code Division Multiple Access, WCDMA) system, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or a terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area. Optionally, the network equipment 110 may be a base transceiver station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a NodeB (NodeB, NB) in a WCDMA system, or an LTE system The evolved Node B (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, relay station, Access points, in-vehicle devices, wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or networks in the future evolution of the Public Land Mobile Network (PLMN) Equipment etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cables, and direct cables Connection; and/or another data connection/network; and/or via a wireless interface, such as for mobile networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks , Satellite network, AM-FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal device set to communicate through a wireless interface can be called a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or mobile phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, and the Internet PDA with road/intranet access, Web browser, note book, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receiver or including radio telephone Other electronic devices of the transceiver. Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless Communication equipment, user agent or user device. Access terminals can be mobile phones, wireless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA), with wireless communication functions Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.

Optionally, direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.

Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Figure 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This embodiment of the application does not limit this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication equipment may include a network equipment 110 with communication functions and a terminal equipment 120. The network equipment 110 and the terminal equipment 120 may be the specific equipment described above. To repeat; the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiment of the present application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing related objects, which means that there can be three types of relationships. For example, A and/or B can mean that there is A alone, A and B exist at the same time, and B exists alone. three situations. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.

Optionally, in the NR system, the contention-based random access process may adopt a four-step random access process, specifically:

In the first step, the terminal device sends a random access preamble, namely MSG1, to the network device.

In the second step, the network device detects the Preamble sent by the terminal device and sends a random access response (RAR) to the terminal device to inform the terminal device of the uplink resource information that can be used when sending MSG3. The device allocates a radio network temporary identity (RNTI) and provides a time advance command (time advance command) to the terminal device. If the terminal device does not detect RAR within the RAR time window, the terminal device performs Preamble For retransmission, if the terminal device detects the RAR within the RAR time window, and the Preamble index in the RAR and the Preamble index system sent by the terminal device, the terminal device can determine that the RAR is successfully received, and can stop monitoring the RAR. Further, the terminal device performs MSG3 transmission according to the uplink resource indicated by the RAR. Wherein, the RA-RNTI used by the network device when sending the RAR is calculated according to the position of the PRACH time-frequency resource, and the PDSCH scheduled by the PDCCH with one RA-RNTI scrambled code may include responses to multiple preambles.

In the third step, after receiving the RAR, the terminal device sends the MSG3 message in the uplink resource designated by the RAR.

In the fourth step, the network device sends an MSG4 message to the terminal device, which includes a contention resolution message, and at the same time allocates uplink transmission resources for the terminal device. When the terminal device receives the MSG 4 sent by the network device, it will detect whether the MSG 4 includes part of the content in the MSG3 message sent by the terminal device. If it is included, it indicates that the random access process of the terminal device is successful, otherwise it is considered that the random process has failed, and the terminal device needs to initiate the random access process again from the first step.

Optionally, in the NR system, the contention-based random access process can also adopt a two-step random access process, specifically:

In the first step, the terminal device sends the Preamble and PUSCH to the network device, where the Preamble and PUSCH are respectively equivalent to MSG1 and MSG3 in the four-step random access process.

Wherein, the Preamble and PUSCH have a corresponding relationship. Specifically, the network device can configure the Preamble resource and the PUSCH resource, and the corresponding relationship between the Preamble resource and the PUSCH resource. Optionally, the Preamble resource and the PUSCH resource can be one-to-one , One-to-many, many-to-one correspondence, take one-to-many as an example, a Preamble resource can correspond to multiple PUSCH resources, and different terminal devices can select the same Preamble resource and different PUSCH resources to send this first step In the message.

In the second step, the network device detects the access preamble sequence sent by the terminal device and sends a random access response message to the terminal device. The random access response message is the response message of Preamble and PUSCH in the first step. The random access response message may include the content of the second step and the fourth step in the four-step random access. Specifically, the random access response message may include RAR and contention resolution messages.

It should be understood that the aforementioned four-step random access process has a relatively large delay, which usually cannot meet the requirements of low-latency and high-reliability scenarios in the NR system, and the random access method based on the two-step random access process can reduce random memory. Taking delay is conducive to meeting the demand for delay.

As mentioned above, one RAR message can include the responses of multiple users who send the Preamble, and the response message for each user can include the random access preamble identification (Random Access Preamble Identify, RAPID) used by the user. For uplink resource configuration messages and timing advance commands, the terminal device determines whether the received RAR is sent to itself based on RA-RNTI. RA-RNTI is generated based on the location information of the Preamble resource. However, different terminal devices can choose the same The Preamble resource and different PUSCH resources send the message in the first step. Therefore, for the terminal device, it is still impossible to distinguish which terminal device the received RAR belongs to.

In view of this, the embodiment of the present application provides a random access method. The network device can generate the RA-RNTI according to the PUSCH resource information, and further can use the RA-RNTI to scramble the PDCCH of the random access response message. It is helpful to distinguish the terminal equipment corresponding to the random access response returned by the network equipment.

FIG. 2 is a schematic flowchart of a method 200 for random access according to an embodiment of the application.

S210: The network device generates a first random access wireless network temporary identifier RA-RNTI according to the resource information of the detected entity uploading and sharing channel PUSCH;

S220. The network device uses the first RA-RNTI to scramble the cyclic redundancy check CRC of the first entity downlink control channel PDCCH, where the first PDCCH is used to schedule the first random access process Random access response message.

Optionally, in the embodiment of the present application, the first random access process may be the two-step random access process described above, or may also be a four-step random access process, which is not described in this embodiment of the present application. limited.

Optionally, in this embodiment of the present application, the random access response message may be the RAR in the four-step random access process, namely MSG2; or, the random access response message may be the two-step random access described above The random access response message in the process. In this case, the random access response message includes part or all of the MSG 2 and MSG 4 messages in the existing four-step random access process. For example, the random access response message includes At least one of the following: the identification ID of the random access preamble sent by the terminal device, the resources allocated by the network device to the terminal device for uplink transmission, contention resolution information, and timing advance TA message.

In this embodiment of the application, the network device can detect the PUSCH sent by the terminal device. If the network device detects the first PUSCH, it can determine the resource information related to the first PUSCH. The related resource information generates the RA-RNTI used to scramble the PDCCH. Further, the RA-RNTI can be used to scramble the cyclic redundancy check (Cyclic Redundancy Check, CRC) of the PDCCH used to schedule the random access response message. .

Correspondingly, the terminal equipment can determine the RA-RNTI that scrambles the PDCCH according to the resource information sent by the PUSCH, and further, can detect the PDCCH according to the RA-RNTI, which is beneficial to correctly receiving the random access corresponding to the Preamble sent by the terminal equipment Respond to the message.

In the embodiment of this application, the RA-RNTI is generated based on the PUSCH resource information. Even if the terminal device uses the same Preamble resource, since it uses different PUSCH resources, the corresponding RA-RNTI is also different, which is beneficial Distinguish which terminal device the random access response message comes from, so that the terminal device can correctly receive the random access response message corresponding to the Preamble sent by the terminal device.

As a specific embodiment, the RA-RNTI is generated based on the information of the Preamble resource and the PUSCH resource. In this way, if the terminal device uses the same Preamble resource and different PUSCH resources, the generated RA-RNTI is different due to the difference in PDSCH resources. It is also different. Or, if the terminal device uses different Preamble resources and the same PUSCH resource, the RA-RNTI generated is different due to the difference in the Preamble resource, which is beneficial for the terminal device to correctly receive the random access sent by the network device. Respond to the message.

As another specific embodiment, the RA-RNTI is generated based on the information of the Preamble resource, the PUSCH resource, and the uplink carrier, where the uplink carrier is the uplink carrier used by the terminal device to send the Preamble and PUSCH. Optionally, the message of the uplink carrier may be the serial number of the uplink carrier. For example, if the serial number is 0, it can indicate a normal uplink carrier (Normal Uplink carrier, NUL carrier), and the serial number 1 indicates a single uplink carrier (Single Uplink carrier, SUL carrier).

Optionally, in this embodiment of the application, the PUSCH resource information is resource information related to the PUSCH. As an example and not limitation, the PUSCH resource information may include at least one of the following: 1. Send the PUSCH resource identification ID used by the PUSCH; 2. The total amount of PUSCH resources available for transmitting the PUSCH; 3. Send the start time domain location information of the target PUSCH resource used by the PUSCH; 4. Send the frequency domain location information of the target PUSCH resource used by the PUSCH; 5. The total number of start time domain positions of PUSCH resources that can be used to transmit the PUSCH; 6. The total number of frequency domain positions of PUSCH resources available for transmitting the PUSCH.

It should be understood that in the embodiment of the present application, each PUSCH resource that can be used to transmit PUSCH may correspond to a starting time domain position and a frequency domain position, and the above message 5 may indicate the total number of starting time domain positions of all PUSCH resources. Or it can also be considered as the total number of possible starting time domain positions of the target PUSCH resource. The above message 6 can indicate the total number of frequency domain positions of all PUSCH resources, or it can also be considered as the possible frequency domain of the target PUSCH resource. The total number of locations.

Optionally, in some embodiments, the PUSCH resource information may also include information about the starting time domain position and/or frequency domain position of each PUSCH resource among the multiple PUSCH resources used to transmit the PUSCH.

Optionally, in the embodiment of the present application, the start time domain location information of the target PUSCH resource may be the index of the start time domain location of the target PUSCH resource, and the frequency domain location information of the target PUSCH may be the PUSCH resource The index of the frequency domain position.

Optionally, in some embodiments, the start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein the start time slot The location information is used to indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol location information is used to indicate the index of the start symbol where the target PUSCH resource is located.

Optionally, in some embodiments, the frequency domain position information of the target PUSCH resource is used to indicate the index of the frequency domain position where the target PUSCH resource is located.

Specifically, the total number of start time domain positions of the PUSCH resources that can be used to transmit the PUSCH may include the total number of start symbol positions of the PUSCH resources used to transmit the PUSCH (denoted as symbol_num) and the start time slot The total number of positions (denoted as slot_num), if the total number of frequency domain positions of the PUSCH resource that can be used to transmit the PUSCH is denoted as freq_num, the frequency domain position index of the target PUSCH resource is denoted as freq_ID, and the target PUSCH resource The resource index of is recorded as PUSCH_ID, and the total number of PUSCH resources available for transmitting the PUSCH is recorded as PUSCH_num, then the starting symbol position (symbol_index) and starting slot position (O_slot_index) of the target PUSCH resource satisfy the following relationship: 0≤symbol_index> symbol_num, 0 slot_index> slot_num, 0≤ freq_ID> freq_num, 0 ≤PUSCH_ID> PUSCH_num.

Optionally, in some embodiments, the network device generates the first random access wireless network temporary identifier RA-RNTI according to the resource information of the physical upload sharing channel PUSCH sent by the terminal device, including:

The network device generates the first RA-RNTI according to the following formula:

RA-RNTI=1+PUSCH_ID+PUSCH_num×symbol_index+PUSCH_num× symbol_num×slot_index+PUSCH_number×symbol_number×slot_number×freq_ID+PUSCH_num×symbol_num×slot_num×freq_num×ul_carrier_id,

Wherein, the ul_carrier_id is used to indicate the index of the uplink carrier used by the terminal device to send the random access preamble.

For example, if PUSCH_num=10, symbol_num=14, slot_num=80, freq_num=8, the above formula can be converted to:

RA-RNTI = 1 +PUSCH_id + 10 ×symbol_index + 10 ×14 ×slot_index + 10 ×14 × 80 × freq_ID + 10 ×14 × 80 × 8 × ul_carrier_i;

Of course, the above PUSCH_num, symbol_num, slot_num=80, freq_num also take other values. The above values can be configured by the network device to the terminal device, or can be agreed upon by the agreement, or partly configured by the network device, and others are configured by the agreement It is agreed that this embodiment of the application does not limit this.

Therefore, in the method for random access in the embodiment of the application, the network device can generate RA-RNTI according to the PUSCH resource information, which is beneficial to realize that different RA-RNTI is generated when the terminal device uses different PUSCH resources, so that the terminal The device can detect the PDCCH based on the RA-RNTI, which is helpful for correctly receiving its own random access response message.

The method for random access according to an embodiment of the present application is described in detail above in conjunction with FIG. 2 from the perspective of a network device, and the method for random access according to another embodiment of the present application is described in detail below in conjunction with FIG. 3 from the perspective of a terminal device. For random access methods. It should be understood that the description on the terminal device side and the description on the network device side correspond to each other, and similar descriptions can be referred to above. To avoid repetition, details are not repeated here.

3 is a schematic flowchart of a method 300 for random access according to another embodiment of the present application. The method 300 may be executed by a network device in the communication system shown in FIG. 1, as shown in FIG. 3. The method 300 includes the following contents:

S310: The terminal device determines the first random access wireless network temporary identifier RA-RNTI according to the resource message of the PUSCH sent by the first entity uploading and sharing channel;

S320. The terminal device detects the first physical downlink control channel PDCCH according to the first RA-RNTI, where the first RA-RNTI is used by the network device to scramble the cyclic redundancy of the first PDCCH Check the CRC.

Optionally, in some embodiments, the PUSCH resource information includes at least one of the following: The PUSCH resource identification ID used by the PUSCH; The total number of PUSCH resources available for transmitting the PUSCH; The total number of all start time domain positions in the PUSCH resources that can be used to transmit the PUSCH; The total number of all starting frequency domain positions in the PUSCH resources that can be used to transmit the PUSCH; Sending the first start time domain location information of the target PUSCH resource used by the PUSCH; Sending the frequency domain location information of the target PUSCH resource used by the PUSCH;

Optionally, in some embodiments, the first start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein the start time Slot position information is used to indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol position information is used to indicate the index of the start symbol where the target PUSCH resource is located.

Optionally, in some embodiments, the frequency domain position information of the target PUSCH resource is used to indicate the index of the frequency domain position where the target PUSCH resource is located.

Optionally, in some embodiments, the method 300 further includes:

The terminal device receives the physical downlink shared channel PDSCH sent by the network device, the PDSCH is scheduled by the first PDCCH, and the PDSCH includes a random access response message in the first random access process.

Optionally, in some embodiments, the first random access procedure includes a first step and a second step;

In the first step, the terminal device sends a random access preamble and a PUSCH to the network device, wherein the resources used to send the random access preamble and the resources used to send the PUSCH have corresponding relationship;

In the second step, the network device replies a random access response message to the terminal device, the random access response message being the random access preamble and the PUSCH response message.

Optionally, in some embodiments, the random access response message includes at least one of the following:

The identification ID of the random access preamble sent by the terminal device, the resources allocated by the network device for the terminal device for uplink transmission, the contention resolution message, and the timing advance TA message.

The method embodiments of the present application are described in detail above with reference to FIGS. 2 to 3, and the apparatus embodiments of the present application are described in detail below in conjunction with FIGS. 4 to 7. It should be understood that the apparatus embodiments and the method embodiments correspond to each other and are similar The description can refer to the method embodiment.

Fig. 4 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in FIG. 4, the network device 400 includes:

The generating module 410 is used to generate the first random access wireless network temporary identifier RA-RNTI according to the resource information of the detected entity uploading and sharing channel PUSCH;

The scrambling module 420 is configured to use the first RA-RNTI to scramble the cyclic redundancy check CRC of the first physical downlink control channel PDCCH, where the first PDCCH is used to schedule the first random access process Random access response message from.

Optionally, in some embodiments, the PUSCH resource information includes at least one of the following: Sending the PUSCH resource identification ID used by the PUSCH; The total number of PUSCH resources available for transmitting the PUSCH; Sending the start time domain location information of the target PUSCH resource used by the PUSCH; Sending the frequency domain location information of the target PUSCH resource used by the PUSCH; The total number of starting time domain positions of PUSCH resources available for transmitting the PUSCH; The total number of frequency domain positions of PUSCH resources available for transmitting the PUSCH.

Optionally, in some embodiments, the start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein the start time slot The location information is used to indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol location information is used to indicate the index of the start symbol where the target PUSCH resource is located.

Optionally, in some embodiments, the frequency domain position information of the target PUSCH resource is used to indicate the index of the frequency domain position where the target PUSCH resource is located.

Optionally, in some embodiments, the first random access procedure includes a first step and a second step;

In the first step, the terminal device sends a random access preamble and a PUSCH to the network device, wherein the resources used to send the random access preamble and the resources used to send the PUSCH have corresponding relationship;

In the second step, the network device replies a random access response message to the terminal device, the random access response message being the random access preamble and the PUSCH response message.

Optionally, in some embodiments, the random access response message includes at least one of the following: the identification ID of the random access preamble sent by the terminal device, and the network device is the terminal The resources allocated by the device for uplink transmission, contention resolution messages, and time advance TA messages.

Fig. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 500 of FIG. 5 includes:

The determining module 510 is configured to determine the first random access wireless network temporary identifier RA-RNTI according to the resource message of the PUSCH sent by the first entity uploading and sharing channel;

The communication module 520 is configured to detect the first physical downlink control channel PDCCH according to the first RA-RNTI, where the first RA-RNTI is used by the network equipment to scramble the cyclic redundancy of the first PDCCH I check the CRC.

Optionally, in some embodiments, the PUSCH resource information includes at least one of the following: The PUSCH resource identification ID used by the PUSCH; The total number of PUSCH resources available for transmitting the PUSCH; The total number of all start time domain positions in the PUSCH resources that can be used to transmit the PUSCH; The total number of all starting frequency domain positions in the PUSCH resources that can be used to transmit the PUSCH; Sending the first start time domain location information of the target PUSCH resource used by the PUSCH; Sending the frequency domain location information of the target PUSCH resource used by the PUSCH;

Optionally, in some embodiments, the first start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein the start time Slot position information is used to indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol position information is used to indicate the index of the start symbol where the target PUSCH resource is located.

Optionally, in some embodiments, the frequency domain position information of the target PUSCH resource is used to indicate the index of the frequency domain position where the target PUSCH resource is located.

Optionally, in some embodiments, the communication module 520 is further used for:

Receive a physical downlink shared channel PDSCH sent by the network device, the PDSCH is scheduled by the first PDCCH, and the PDSCH includes a random access response message in the first random access process.

Optionally, in some embodiments, the first random access procedure includes a first step and a second step;

In the first step, the terminal device sends a random access preamble and a PUSCH to the network device, wherein the resources used to send the random access preamble and the resources used to send the PUSCH have corresponding relationship;

In the second step, the network device replies a random access response message to the terminal device, the random access response message being the random access preamble and the PUSCH response message.

Optionally, in some embodiments, the random access response message includes at least one of the following:

The identification ID of the random access preamble sent by the terminal device, the resources allocated by the network device for the terminal device for uplink transmission, the contention resolution message, and the timing advance TA message.

FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 6, the communication device 600 may further include a memory 620. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610, or it may be integrated in the processor 610.

Optionally, as shown in FIG. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send messages or data to other devices, or receive other devices. Message or data sent by the device.

The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the communication device 600 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For simplicity , I won’t repeat it here.

Fig. 7 is a schematic structural diagram of a wafer of an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7, the chip 700 may further include a memory 720. The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

Wherein, the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain messages or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output messages or data to other devices or chips.

Optionally, the chip can be applied to the network equipment in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip or a system-on-chip.

FIG. 8 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 8, the communication system 900 includes a terminal device 910 and a network device 920.

Wherein, the terminal device 910 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding function implemented by the network device in the above method. Repeat it again.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method embodiments can be completed through hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), a dedicated integrated circuit (Application Specific Integrated Circuit, ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA), or Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random memory, flash memory, read-only memory, programmable read-only memory, or electrically readable, writable and programmable memory, registers, and other mature storage media in the field. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache memory. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory ( Synchronous DRAM, SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Connection Dynamic Random Access Memory Body (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include but not limited to these and any other suitable types of memory.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM). , DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, I won't repeat them here.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of this application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application For the sake of brevity, I won’t repeat it here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiment of this application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of this application. For brevity, This will not be repeated here.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiment of this application, and the computer program instructions make the computer execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application, For the sake of brevity, I will not repeat them here.

The embodiment of the application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, I will not repeat them here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program runs on the computer, the computer can execute each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.

A person of ordinary skill in the art can be aware that the units and algorithm steps described in the examples in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which is not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or elements may be combined or may be Integrate into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist separately, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: flash drives, removable hard drives, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc., which can store program codes Medium.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the applied patent.

100: Communication system 110: network equipment 120: terminal equipment 200: Method for random access S210~S220: steps 300: Method for random access S310~S320: steps 400: network equipment 410: Generate Module 420: scrambling module 500: terminal equipment 510: Confirm module 520: Communication module 600: Communication equipment 610: processor 620: memory 630: Transceiver 700: chip 710: processor 720: Memory 730: input interface 740: output interface 900: Communication system 910: terminal equipment 920: network equipment

Fig. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a method for random access provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of a method for random access according to another embodiment of the present application.

Fig. 4 is a schematic block diagram of a network device provided by an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 7 is a schematic block diagram of a wafer provided by an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication system provided by an embodiment of the present application.

200: Method for random access

S210~S220: steps

Claims (20)

A method for random access, including: The network equipment generates the first random access wireless network temporary identifier RA-RNTI according to the resource information of the detected entity uploading and sharing channel PUSCH; The network device uses the first RA-RNTI to scramble the cyclic redundancy check CRC of the first physical downlink control channel PDCCH, wherein the first PDCCH is used to schedule random memory in the first random access process Get the response message. The method according to claim 1, wherein the resource information of the PUSCH includes at least one of the following: Sending the PUSCH resource identification ID used by the PUSCH; The total number of PUSCH resources available for transmitting the PUSCH; Sending the start time domain location information of the target PUSCH resource used by the PUSCH; Sending the frequency domain location information of the target PUSCH resource used by the PUSCH; The total number of starting time domain positions of PUSCH resources available for transmitting the PUSCH; The total number of frequency domain positions of PUSCH resources available for transmitting the PUSCH. The method according to item 2 of the scope of patent application, wherein the start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein the The start time slot location information is used to indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol location information is used to indicate the index of the start symbol where the target PUSCH resource is located. The method according to item 2 or 3 of the scope of patent application, wherein the frequency domain position information of the target PUSCH resource is used to indicate the index of the frequency domain position where the target PUSCH resource is located. The method according to any one of items 1 to 3 in the scope of patent application, wherein the first random access process includes a first step and a second step; In the first step, the terminal device sends a random access preamble and a PUSCH to the network device, wherein the resources used to send the random access preamble and the resources used to send the PUSCH have corresponding relationship; In the second step, the network device replies a random access response message to the terminal device, the random access response message being the random access preamble and the PUSCH response message. The method according to claim 5, wherein the random access response message includes at least one of the following: The identification ID of the random access preamble sent by the terminal device, the resources allocated by the network device for the terminal device for uplink transmission, the contention resolution message, and the timing advance TA message. A method for random access, including: The terminal device determines the first random access wireless network temporary identifier RA-RNTI according to the resource message sent by the first entity to upload and share the channel PUSCH; The terminal device detects the first physical downlink control channel PDCCH according to the first RA-RNTI, where the first RA-RNTI is used for the network device to scramble the cyclic redundancy check of the first PDCCH CRC. The method according to item 7 of the scope of patent application, wherein the resource information of the PUSCH includes at least one of the following: The PUSCH resource identification ID used by the PUSCH; The total number of PUSCH resources available for transmitting the PUSCH; The total number of all start time domain positions in the PUSCH resources that can be used to transmit the PUSCH; The total number of all starting frequency domain positions in the PUSCH resources that can be used to transmit the PUSCH; Sending the first start time domain location information of the target PUSCH resource used by the PUSCH; Send the frequency domain location information of the target PUSCH resource used by the PUSCH. The method according to item 8 of the scope of patent application, wherein the first starting time domain position information of the target PUSCH resource includes starting symbol position information and starting time slot position information of the target PUSCH resource, wherein, The start slot location information is used to indicate the index of the start slot where the target PUSCH resource is located, and the start symbol location information is used to indicate the index of the start symbol where the target PUSCH resource is located. The method according to claim 8 or 9, wherein the frequency domain location information of the target PUSCH resource is used to indicate the index of the frequency domain location where the target PUSCH resource is located. The method according to any one of items 7 to 9 of the scope of patent application, wherein the method further comprises: The terminal device receives the physical downlink shared channel PDSCH sent by the network device, the PDSCH is scheduled by the first PDCCH, and the PDSCH includes a random access response message in the first random access process. 1 The method according to item 11 of the scope of patent application, wherein the first random access process includes a first step and a second step; In the first step, the terminal device sends a random access preamble and a PUSCH to the network device, wherein the resources used to send the random access preamble and the resources used to send the PUSCH have corresponding relationship; In the second step, the network device replies a random access response message to the terminal device, the random access response message being the random access preamble and the PUSCH response message. The method according to claim 12, wherein the random access response message includes at least one of the following: The identification ID of the random access preamble sent by the terminal device, the resources allocated by the network device for the terminal device for uplink transmission, the contention resolution message, and the timing advance TA message. A terminal device, including: The determining module is used to determine the first random access wireless network temporary identifier RA-RNTI according to the resource information of the PUSCH sent by the first entity to upload and share the channel; The communication module is configured to detect the first physical downlink control channel PDCCH according to the first RA-RNTI, where the first RA-RNTI is used for the network equipment to scramble the cyclic redundancy of the first PDCCH Check the CRC. The terminal device according to item 14 of the scope of patent application, wherein the resource information of the PUSCH includes at least one of the following: The PUSCH resource identification ID used by the PUSCH; The total number of PUSCH resources available for transmitting the PUSCH; The total number of all start time domain positions in the PUSCH resources that can be used to transmit the PUSCH; The total number of all starting frequency domain positions in the PUSCH resources that can be used to transmit the PUSCH; Sending the first start time domain location information of the target PUSCH resource used by the PUSCH; Send the frequency domain location information of the target PUSCH resource used by the PUSCH. The terminal device according to item 15 of the scope of patent application, wherein the first start time domain position information of the target PUSCH resource includes start symbol position information and start time slot position information of the target PUSCH resource, wherein, The start time slot position information is used to indicate the index of the start time slot where the target PUSCH resource is located, and the start symbol position information is used to indicate the index of the start symbol where the target PUSCH resource is located. The terminal device according to item 15 or 16 of the scope of patent application, wherein the frequency domain position information of the target PUSCH resource is used to indicate the index of the frequency domain position where the target PUSCH resource is located. The terminal device according to any one of items 14 to 16 in the scope of patent application, wherein the communication module is also used for: Receive a physical downlink shared channel PDSCH sent by the network device, the PDSCH is scheduled by the first PDCCH, and the PDSCH includes a random access response message in the first random access process. The terminal device according to item 18 of the scope of patent application, wherein the first random access process includes a first step and a second step; In the first step, the terminal device sends a random access preamble and a PUSCH to the network device, wherein the resources used to send the random access preamble and the resources used to send the PUSCH have corresponding relationship; In the second step, the network device replies a random access response message to the terminal device, the random access response message being the random access preamble and the PUSCH response message. The terminal device according to item 19 of the scope of patent application, wherein the random access response message includes at least one of the following: The identification ID of the random access preamble sent by the terminal device, the resources allocated by the network device for the terminal device for uplink transmission, the contention resolution message, and the timing advance TA message.

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