WO2022237640A1

WO2022237640A1 - Resource determination method and apparatus

Info

Publication number: WO2022237640A1
Application number: PCT/CN2022/091152
Authority: WO
Inventors: 温容慧; 余政
Original assignee: 华为技术有限公司
Priority date: 2021-05-10
Filing date: 2022-05-06
Publication date: 2022-11-17
Also published as: CN115334579A

Abstract

Disclosed in the embodiments of the present application are a resource determination method and apparatus. The method comprises: a terminal device sending a random access preamble; the terminal device acquiring first information, wherein the first information indicates N resources, N is a positive integer, the first information is carried by first downlink control information (DCI) scrambled by a random access radio network temporary identifier (RA-RNTI), or is carried by a first MAC subPDU or a second MAC subPDU, the first MAC subPDU is included in a MAC PDU for a random access response, a sub-header of the first MAC subPDU does not comprise a random access preamble identifier, the second MAC subPDU is included in the MAC PDU for the random access response, the second MAC subPDU includes a MAC RAR, and a sub-header of the second MAC subPDU comprises a random access preamble identifier; and the terminal device sending or receiving second information on a first resource among the N resources, wherein the second information is any one of the following: second DCI for scheduling an Msg3 retransmission, an Msg3, third DCI for scheduling a contention resolution message, the contention resolution message, or feedback information of the contention resolution message.

Description

Method and device for resource determination

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China on May 10, 2021, with the application number 202110506807.2 and the application title "A Method and Device for Determining Resources", the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the technical field of wireless communication, and in particular to a resource determination method and device.

Background technique

Mobile communication technology has profoundly changed people's lives, but people's pursuit of higher performance mobile communication technology has never stopped. In order to cope with the explosive growth of mobile data traffic in the future, the connection of massive mobile communication devices, and the continuous emergence of various new services and application scenarios, the fifth generation (5G) mobile communication technology has emerged as the times require.

The International Telecommunication Union (ITU) has defined three major application scenarios for 5G and future mobile communication technologies: enhanced mobile broadband (eMBB), ultra reliable and low latency communication (ultra reliable and low latency) communications, URLLC) and massive machine type communications (mMTC).

Typical eMBB services include: ultra-high-definition video, augmented reality (augmented reality, AR), virtual reality (virtual reality, VR), etc. The main characteristics of these services are large amount of transmitted data and high transmission rate. Typical URLLC services include: wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles and unmanned aircraft, and tactile interaction applications such as remote repair and remote surgery. The main feature of these services is the requirement of ultra-high reliability Sexuality, low latency, small amount of transmitted data, and bursty nature. Typical mMTC services include: smart grid power distribution automation, smart city, etc. The main characteristics are the huge number of networked devices, the small amount of transmitted data, and the data is not sensitive to transmission delay. These mMTC terminals need to meet low cost and very long standby time time demands.

Although 5G mobile communication technology has many advantages, the number of terminal devices randomly accessing the 5G network is dynamically changing. This will cause a series of problems. For example, when the number of random access terminal devices is small and the amount of allocated resources is large, a large amount of resource waste will be generated; when the number of random access terminal devices is large, the amount of allocated resources When less, there will be resource congestion.

Contents of the invention

The embodiment of the present application proposes a resource determination method and device, which can solve the problems of resource waste and resource congestion.

In the first aspect, the embodiment of the present application proposes a method for determining resources, and the execution body of the method may be a terminal device, or may be a chip applied in the terminal device. The following description is made by taking the execution subject as a terminal device as an example. The terminal device sends a random access preamble to acquire first information, where the first information may indicate N resources, where N is a positive integer. The terminal device sends or receives second information on a first resource among the N resources.

Exemplarily, the first information is a first downlink control information (Downlink control information, DCI) scrambled by a Random Access Radio Network Temporary Identifier (Random Access Radio Network Temporary Identifier, RA-RNTI), a first MAC subPDU Or the second MAC subPDU bearer. For example, the first MAC subPDU is included in the MAC PDU used for the random access response, and the subheader of the first MAC subPDU does not include the random access preamble identifier. Another example is that the second MAC subPDU is included in the MAC PDU of the random access response, the second MAC subPDU includes MAC RAR, and the subheader of the second MAC subPDU includes a random access preamble.

Exemplarily, the second information is any of the following: the second DCI for scheduling the retransmission of Msg3, or Msg3, or the third DCI for scheduling the contention resolution message, or the contention resolution message, or the feedback information of the contention resolution message .

In a possible implementation, the foregoing N resources include a resource location of each of the N resources and/or a resource size of each of the N resources.

In a possible implementation, the terminal device may also acquire first signaling, where the first signaling indicates M resources. The first information may indicate N resources among the M resources, where M is a positive integer greater than or equal to N.

In a possible implementation, the first information is carried by the first DCI or the first MAC subPDU scrambled by the RA-RNTI, further, the terminal device determines the third MAC subPDU, and the third MAC subPDU is included in the random access In the MAC PDU of the response, the third MAC subPDU includes a random access preamble identifier, and the random access preamble identifier in the third MAC subPDU is the same as the first identifier corresponding to the random access preamble. The terminal device determines the first resource among the N resources according to the location information of the third MAC subPDU in the MAC PDU.

In a possible implementation, the terminal device may also determine the resource location of each of the N resources according to a first parameter, where the first parameter includes the first reference location, the first bandwidth, the value of N, and the carrier bandwidth , at least one of subcarrier intervals; and/or determining the resource size of each of the N resources according to the first bandwidth.

In a possible implementation, the above-mentioned first reference position is predefined, or the above-mentioned first reference position is indicated by the second signaling, and/or, the above-mentioned first bandwidth is a bandwidth supported by the user equipment, or the above-mentioned first A bandwidth is indicated by the second signaling.

In a possible implementation, the terminal device determines the resource position of each of the M resources according to a second parameter, where the second parameter includes a second reference position, a second bandwidth, a carrier bandwidth or a subcarrier spacing At least one item; and/or, the terminal device determines the resource size of each of the M resources according to the second bandwidth.

In a possible implementation, the terminal device receives system information, where the system information includes the foregoing first signaling and/or the foregoing second signaling.

In the second aspect, the embodiment of the present application also proposes a method for determining resources, and the execution subject of the method may be a network device or a chip applied to the network device. The following description is made by taking the execution subject as an example of a network device. The network device receives the random access preamble, and sends first information, where the first information indicates N resources, where N is a positive integer. The network device receives or sends the second information on the first resource among the N resources.

Exemplarily, the first information is carried by the first DCI, the first MAC subPDU or the second MAC subPDU scrambled by the RA-RNTI. For example, the first MAC subPDU is included in the MAC PDU used for the random access response, and the subheader of the first MAC subPDU does not include the random access preamble identifier. For another example, the second MAC subPDU is included in the MAC PDU of the random access response, the second MAC subPDU includes MAC RAR, and the subheader of the second MAC subPDU includes a random access preamble.

Exemplarily, the second information is the second DCI for scheduling retransmission of Msg3, or Msg3, or the third DCI for scheduling contention resolution messages. Or contention resolution messages, or feedback information for contention resolution messages.

Exemplarily, the network device may also send first signaling, where the first signaling indicates M resources. The first information may indicate N resources among the M resources. M is a positive integer greater than or equal to N.

In a possible implementation, the first information is carried by the first DCI or the first MAC subPDU scrambled by the RA-RNTI, and the network device may also determine the third MAC subPDU, which is included in the random In the MAC PDU of the access response, the third MAC subPDU includes a random access preamble identifier, and the random access preamble identifier in the third MAC subPDU is the same as the first identifier corresponding to the random access preamble. Further, the network device may also determine the first resource among the N resources according to the location information of the third MAC subPDU in the MAC PDU.

In a possible implementation, the network device may also determine the resource location of each of the N resources according to a first parameter, where the first parameter includes the first reference location, the first bandwidth, the value of N, and the carrier bandwidth , at least one of subcarrier intervals; and/or determining the resource size of each of the N resources according to the first bandwidth.

In a possible implementation, the network device may also determine the resource location of each of the M resources according to a second parameter, where the second parameter includes a second reference location, a second bandwidth, a carrier bandwidth, and a subcarrier spacing at least one of; and/or determine the resource size of each of the M resources according to the second bandwidth.

In a possible implementation, the network device may further send system information, where the system information includes the foregoing first signaling and/or the foregoing second signaling.

In the third aspect, a device for determining resources is provided, and the beneficial effect may refer to the description of the first aspect, which will not be repeated here. The resource determination device has the function of implementing the behavior in the method example of the first aspect above. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions. In a possible design, the device for determining resources includes: a transceiver module, configured to send a random access preamble; the transceiver module, further configured to obtain first information, the first information indicating N resources, the N is a positive integer; the first information is carried by the first downlink control information DCI, the first MAC subPDU or the second MAC subPDU scrambled by the random access radio network temporary identifier RA-RNTI, and the first MAC subPDU contains In the MAC PDU for random access response, and the subheader of the first MAC subPDU does not include a random access preamble; the second MAC subPDU is included in the MAC PDU of the random access response, and the first MAC subPDU is included in the MAC PDU of the random access response The second MAC subPDU includes MAC RAR, and the subheader of the second MAC subPDU includes a random access preamble; the transceiver module is also used to send or receive second information on the first resource among the N resources , the second information is any of the following: the second DCI that schedules the retransmission of Msg3; or Msg3; or the third DCI that schedules the contention resolution message; or the contention resolution message; or the feedback information of the contention resolution message. These modules can perform the corresponding functions in the above-mentioned method example of the first aspect. For details, refer to the detailed description in the method example, and details are not repeated here.

In the fourth aspect, a device for determining resources is provided, and the beneficial effect can be referred to the description of the second aspect, which will not be repeated here. The resource determination device has the function of realizing the behavior in the method example of the second aspect above. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions. In a possible design, the device for determining resources includes: a transceiver module, configured to receive a random access preamble; the transceiver module, further configured to send first information, the first information indicating N resources, the N is a positive integer; the first information is carried by the first downlink control information DCI, the first MAC subPDU or the second MAC subPDU scrambled by the random access radio network temporary identifier RA-RNTI, and the first MAC subPDU contains In the MAC PDU for random access response, and the subheader of the first MAC subPDU does not include a random access preamble; the second MAC subPDU is included in the MAC PDU of the random access response, and the first MAC subPDU is included in the MAC PDU of the random access response The second MAC subPDU includes MAC RAR, and the subheader of the second MAC subPDU includes a random access preamble; the transceiver module is also used to receive or send second information on the first resource in the N resources , the second information is any of the following: the second DCI that schedules the retransmission of Msg3; or Msg3; or the third DCI that schedules the contention resolution message; or the contention resolution message; or the feedback information of the contention resolution message. These modules can perform the corresponding functions in the method example of the second aspect above. For details, refer to the detailed description in the method example, and details are not repeated here.

A fifth aspect provides an apparatus for determining a resource. The apparatus for determining a resource may be the terminal device in the above method embodiment, or a chip provided in the terminal device. The resource determining device includes a communication interface and a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface. When the processor executes the computer programs or instructions, the resource determination device executes the method performed by the terminal device in the above method embodiment .

In a sixth aspect, a resource determining device is provided, and the resource determining device may be the network device in the above method embodiment, or a chip provided in the network device. The resource determining device includes a communication interface and a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer programs or instructions, the resource determining device executes the method performed by the network device in the above method embodiment .

According to a seventh aspect, a computer program product is provided, and the computer program product includes: computer program code, when the computer program code is executed, the method performed by the terminal device in the above aspects is executed.

In an eighth aspect, a computer program product is provided, and the computer program product includes: computer program code, when the computer program code is executed, the method performed by the network device in the above aspects is executed.

In a ninth aspect, the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor, configured to implement functions of the terminal device in the methods in the foregoing aspects. In a possible design, the chip system further includes a memory, configured to store program instructions and/or data. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In a tenth aspect, the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor, configured to implement the functions of the network device in the methods of the foregoing aspects. In a possible design, the chip system further includes a memory, configured to store program instructions and/or data. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In an eleventh aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is run, the methods performed by the terminal device in the above aspects are implemented.

In a twelfth aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method performed by the network device in the above aspects is realized.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application 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 are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a random access process in a possible implementation;

Fig. 2 is a schematic diagram of a MAC PDU including multiple MAC subPDUs in a possible implementation;

FIG. 3 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application;

FIG. 4 is a schematic diagram of a communication network architecture of the communication system provided in FIG. 3;

FIG. 5 is a schematic diagram of another communication network architecture of the communication system provided in FIG. 3;

FIG. 6 is a schematic diagram of another communication network architecture of the communication system provided in FIG. 3;

FIG. 7 is a schematic flowchart of a method for determining resources provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of evenly allocating resources to user equipment when N=4 provided by the embodiment of the present application;

9 is a schematic diagram of the same RAR DCI and/or RAR associated with different ROs in the frequency domain provided by the embodiment of the present application;

FIG. 10 is a schematic diagram of the same RO in the time domain associated with the same RAR DCI and/or RAR provided by the embodiment of the present application;

FIG. 11 is a schematic diagram of the random access response of the random access preamble sent in RO X, RO Y or RO Z in different MAC subPDUs provided by the embodiment of the present application;

FIG. 12 is a schematic diagram of BWP-a and BWP-b on both sides of the carrier provided by the embodiment of the present application;

FIG. 13 is a schematic structural diagram of a device for determining resources provided by an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the specific implementation manners of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It should be noted that the term "and/or" in this application is only an association relationship describing associated objects, which means that there may be three kinds of relationships, for example, A and/or B can mean: A exists alone, and there exists A and B, there are three cases of B alone. The terms "first", "second" and "third" in the description and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe a specific sequence of objects. For example, the first MAC subPDU, the second MAC subPDU, and the third MAC subPDU are used to distinguish different MAC subPDUs, rather than to describe a specific sequence of target objects. In the embodiments of the present application, words such as "exemplary", "for example" or "such as" are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "exemplary", "for example" or "for example" in the embodiments of the present application shall not be construed as being more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

In a possible implementation, referring to Figure 1, the random access process is implemented through the following steps:

In the first step, the terminal device sends a random access request message (Msg1) to the network device. Specifically, the terminal device randomly selects one of several preamble sequences, and sends it in a preconfigured random access channel opportunity (random access channel occasion, RO) resource. Therefore, there may be multiple terminal devices sending random access request messages in the same RO, and these terminal devices can be distinguished according to different preamble sequences. It is understandable that multiple terminal devices may choose the same preamble sequence, resulting in conflicts, which are resolved in the fourth step.

In the second step, if the network device successfully receives the preamble sequence and allows the terminal device to access, then within the pre-configured random access response (random access response, RAR) window, send a random access response message (Msg2 ), that is, the RAR in Figure 1. RAR includes MAC PDU and downlink control information (Downlink Control Information, DCI) for scheduling MAC PDU.

Referring to Figure 2, a MAC PDU may include multiple subPDUs (ie MAC subPDUs). As shown in Figure 2, a MAC PDU includes MAC subPDU1, MAC subPDU2...MAC subPDUn.

Each subPDU can determine the subPDU type according to the subheader. There are three types of subPDUs. The first two types only have subheader, which are respectively used for Backoff Indicator (BI), as shown in MAC subPDU1 in Figure 2 and system message request confirmation, as shown in MAC subPDU2 in Figure 2. Specifically, as shown in MAC subPDU2 in Figure 2, the content of the RAPID in the subheader corresponds to the serial number of the preamble sequence when the terminal device initiates a random access request. And, if the RAR corresponding to the serial number of the preamble sequence is used to respond to the system message request, there is no MAC RAR behind it. The third type includes subheader and MAC RAR, which are used to feed back random access response messages. Specifically, the subheader is the same as the second case, the difference is that if the RAR corresponding to the serial number of the preamble sequence carried by the RAPID in the subheader is used for random access response, there will be a MAC RAR behind the subheader, as shown in Figure 2 Shown in MAC subPDU3.

In the third step, the terminal device sends Msg3 information according to the uplink scheduling information in the subPDU.

The fourth step is to resolve the competition. Since the sequence numbers of the preamble sequences selected among different terminal devices conflict, the network device indicates in this step which terminal device is successfully connected, and the other terminal devices fail to connect. Specifically, the network device sends Msg4 to the terminal device, wherein Msg4 carries a copy of the successfully demodulated Msg3 message, and the terminal device compares it with the high-level identity sent by itself in Msg3, and if the two are the same, it is determined that the competition is successful.

It can be seen from the above description that Msg1 is that multiple users share the same time-frequency resources, Msg2 is that multiple users share the same downlink control channel resources and downlink data channel resources, and Msg3 is that each user has independent uplink data channel resources , Msg4 is that each user has independent downlink control channel resources and downlink data channel resources. Therefore, in the initial access phase, Msg3 and Msg4 need more uplink and downlink resources. How to dynamically allocate resources for Msg3 and Msg4 according to the access capacity requirements of terminal devices in the network, so as to avoid resource congestion and resource waste, has become an urgent problem to be solved.

In view of the above problems, the embodiment of the present application proposes a resource determination method, which can be applied to fourth generation (4th generation, 4G) communication systems such as long term evolution (long term evolution, LTE) systems, new radio (new radio, NR) system and other fifth generation (5th generation, 5G) communication systems, and other future mobile communication systems.

Referring to FIG. 3 , FIG. 3 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application. As shown in FIG. 3 , the mobile communication system includes a core network device 310 , a radio access network device 320 and at least one terminal device (such as terminal device 330 and terminal device 340 in FIG. 3 ). The terminal device is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner. The core network equipment and the wireless access network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same physical equipment, or it can be a physical equipment It integrates some functions of core network equipment and some functions of wireless access network equipment. Terminal equipment can be fixed or mobile. FIG. 3 is only a schematic diagram. The mobile communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 3 . The embodiment of the present application does not limit the number of core network equipment, radio access network equipment, and terminal equipment included in the mobile communication system.

The wireless access network device is the access device for the terminal device to access the mobile communication system wirelessly, and it can be a base station NodeB, an evolved base station eNodeB, a base station in a 5G mobile communication system, a base station in a future mobile communication system or For the access nodes in the WiFi system, etc., the embodiment of the present application does not limit the specific technology and specific equipment form adopted by the wireless access network equipment.

FIG. 4 shows a communication network architecture of the communication system provided in FIG. 3 of the present application, and the embodiments provided later can all be applicable to this architecture. The first network device is a source network device (or called, a working network device, or a serving network device) of a terminal device (subsequently described with UE as an example), and the second network device is a target network device (or called, Standby network device), that is, a network device that provides services for the UE after handover. It should be noted that, in this application, "failure" can be understood as failure of a network device, and/or failure to provide services for one or more UEs due to other reasons, referred to as failure for short. The "handover" mentioned in this application refers to the handover of the network device providing service for the UE, and is not limited to "cell handover". For convenience of description, a network device is used as an example for description. The "handover" may refer to a handover caused by a change in the base station serving the UE. For example, when the source base station of the UE fails, the standby base station provides services for the UE. For another example, during the handover process of the UE from the source base station to communicating with another base station, the handover target base station provides services for the UE. The cell accessed by the UE before and after the handover may be changed or not changed. It can be understood that the backup network device is a relative concept, for example, with respect to one UE, base station 2 is the backup network device of base station 1, and with respect to another UE, base station 1 is the backup network device of base station 2.

The first network device and the second network device may be two different devices, for example, the first network device and the second network device are two different base stations. Optionally, the first network device and the second network device may also be two sets of functional modules in the same device. The functional modules may be hardware modules, or software modules, or hardware modules and software modules. For example, the first network device and the second network device are located in the same base station, and are two different functional modules in the base station. In an implementation manner, the first network device and the second network device are not transparent to the UE. When the UE interacts with the corresponding network device, it can know which network device it is interacting with. In another implementation manner, the first network device and the second network device are transparent to the UE. The UE is able to communicate with network devices, but does not know which of the two network devices it is interacting with. In other words, for the UE, it may be considered that there is only one network device. In another implementation manner, the first network device and the second network device may not be transparent to the UE, or may be transparent. In the subsequent description, the first network device, the second network device, and the terminal device (taking UE as an example) may be respectively the first network device in the network architecture shown in FIG. In the drawings corresponding to the various embodiments.

FIG. 5 shows another communication network architecture of the communication system provided in FIG. 3 of the present application. As shown in Figure 5, the communication system includes a core network (new core, CN) and a radio access network (radio access network, RAN). The network equipment (for example, base station) in the RAN includes a baseband device and a radio frequency device. The baseband device can be implemented by one or more nodes, and the radio frequency device can be remote from the baseband device and implemented independently, or can be integrated into the baseband device, or partly remote and partly integrated into the baseband device. Network devices in the RAN may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs may be centrally controlled by one CU. CU and DU can be divided according to their wireless network protocol layer functions. For example, the functions of the PDCP layer and above protocol layers are set in the CU, and the protocol layers below PDCP, such as the functions of the RLC layer and MAC layer, are set in the DU. It should be noted that the division of such protocol layers is only an example, and may also be divided in other protocol layers. The radio frequency device can be remote, not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, which is not limited in this application.

FIG. 6 shows another communication network architecture in the communication system provided in FIG. 3 of the present application. Compared with the architecture shown in Figure 5, the control plane (CP) and user plane (UP) of the CU can also be separated into different entities for implementation, namely the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity). In this network architecture, the signaling generated by the CU can be sent to the UE through the DU, or the signaling generated by the UE can be sent to the CU through the DU. The DU can directly transmit the signaling to the UE or CU through protocol layer encapsulation without parsing the signaling. In this network architecture, a CU is classified as a network device on the RAN side. In addition, a CU may also be classified as a network device on the CN side, which is not limited in this application.

The terminal equipment in this application may also be called terminal terminal, user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) and so on. Terminal equipment can be mobile phone, tablet computer (Pad), computer with wireless transceiver function, virtual reality (Virtual Reality, VR) terminal equipment, augmented reality (Augmented Reality, AR) terminal equipment, industrial control (industrial control) ), wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.

Radio access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. The embodiment of the present application does not limit the application scenarios of the wireless access network device and the terminal device.

The embodiments of the present application may be applicable to downlink signal transmission, may also be applicable to uplink signal transmission, and may also be applicable to device-to-device (device to device, D2D) signal transmission. For downlink signal transmission, the sending device is a wireless access network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the sending device is a terminal device, and the corresponding receiving device is a wireless access network device. For D2D signal transmission, the sending device is a terminal device, and the corresponding receiving device is also a terminal device. The embodiment of the present application does not limit the transmission direction of the signal.

Communications between wireless access network devices and terminal devices and between terminal devices can be performed through licensed spectrum (licensed spectrum), or through unlicensed spectrum (unlicensed spectrum), or both through licensed spectrum and unlicensed spectrum. Licensed spectrum for communication. Communication between wireless access network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through the spectrum below 6G, or through the spectrum above 6G, and can also use the spectrum below 6G and above 6G spectrum at the same time to communicate. The embodiment of the present application does not limit the spectrum resource used between the radio access network device and the terminal device.

It should be noted that the resources may be frequency domain resources, time domain resources, time frequency domain resources, power resources, antenna port resources, or signal beam resources. For example, the resource is part of bandwidth (bandwidth part, BWP), or control resource set (CORESET), or synchronization signal block (synchronization signal block, SSB), or physical broadcast channel (physical broadcast channel, PBCH ) resources, or uplink data channel resources, or downlink data channel resources, or uplink control channel resources, or downlink control channel resources, or random access channel resources, or carrier resources.

Example 1:

In this embodiment of the present application, the resources are frequency domain resources as an example for description.

Fig. 7 is a schematic flowchart of a resource determination method, which includes S702-S712, which solves the problems of resource congestion and resource waste when resources are allocated to Msg3 and Msg4 in the random access process.

A resource determination method as shown in FIG. 7 provided in the embodiment of the present application is described in detail below. In the embodiment of the present application, the resource determination method can be applied to the terminal device side and the network device side.

In a possible implementation, the resource determination method provided in the embodiment of the present application is implemented through the following steps:

S702. The terminal device sends a random access preamble to the network device.

In this embodiment of the present application, the terminal device sends a random access preamble to the network device for initiating random access.

S704. The network device receives the random access preamble from the terminal device.

In this embodiment of the present application, the network device receives the random access preamble sent by the terminal device in S702.

S706. The network device sends the first information to the terminal device.

In this embodiment of the present application, the network device sends the first information to the terminal device. The first information indicates N resources. Exemplarily, the N resources are available resources. N is a positive integer. For example, the first information is carried by the first downlink control information DCI, the first MAC subPDU or the second MAC subPDU scrambled by the random access radio network temporary identifier RA-RNTI. For example, the first downlink control information DCI scrambled by the random access radio network temporary identifier RA-RNTI is the first downlink control information DCI scrambled by the RA-RNTI for cyclic redundancy check.

For example, the first information is carried by the first DCI, the first MAC subPDU or the second MAC subPDU scrambled by the RA-RNTI. The first MAC subPDU is included in the MAC PDU used for the random access response, and the subheader of the first MAC subPDU does not include the random access preamble. The second MAC subPDU is included in the MAC PDU of the random access response, the second MAC subPDU includes MAC RAR, and the subhead of the second MAC subPDU includes a random access preamble.

It should be noted that the first DCI is the Msg2 DCI in the existing protocol, or the DCI scrambled by the RA-RNTI, or the DCI used to schedule the Msg2 (RAR).

There are 16 bits of reserved bits in the first DCI. For example, the first information is the first field in the Msg2DCI, and the first field indicates N resources. For example, the first field includes 2 bits. A is the status information of the first field, then N=A+1, then when the status information A of the first field is "11", N=3+1=4, that is, the first information indicates that 4 resources are available resources . Alternatively, when the state information A of the first field is "00", N=0+1=1, and the first information indicates that one resource is an available resource.

As an alternative manner, the first information is data information of Msg2/RAR. For example, a field in the first subheader of Msg2 or a field in a subheader including BI indicates N resources. In the prior art, the subheader including BI includes a reserved field (R field). However, the reserved field is not included in the first information of the present application. For example, the first information is the first field in the Msg2/RAR subheader, and the first field indicates N resources. Exemplarily, the first field is the third and fourth bits in the Msg2/RAR subheader.

In a possible implementation, the N resources include a resource location of each resource in the N resources and/or a resource size of each resource in the N resources.

In a possible implementation, the first information indicates a resource location of each of the N resources and/or a resource size of each of the N resources.

In a possible implementation, the network device may determine the resource location of each of the N resources according to the first parameter. The first parameter may be at least one of the first reference position, the first bandwidth, the value of N, carrier bandwidth, and subcarrier spacing. Specifically, for example, the network device may determine the resource location of each of the N resources according to the first reference location, the first bandwidth, and the carrier bandwidth. Exemplarily, the starting position of resource i=mod((a+i*first bandwidth), carrier bandwidth), a is the first reference position. In another example, the network device determines the resource location of each of the N resources according to the first reference location and the first bandwidth. Exemplarily, the first reference position is the starting position of the carrier. For example, the starting position of resource i=i*first bandwidth. where i=0,1...N. For example, the network device determines the resource size of each of the N resources according to the first bandwidth.

In a possible implementation, the foregoing first reference position may be predefined. For example, the first reference position is the start position of the carrier, or the end position of the carrier. For example, the resource is the initial uplink bandwidth (Bandwidth Part, BWP), or the downlink initial BWP, or the control resource set (CORESET) 0, or the control resource search space (search space) 0 or monitoring The location of the physical downlink control channel (Physical Downlink Control Channel, PDCCH) of the RAR. In another example, the first reference location is a resource location indicated by a system information block (System information block, SIB) or system information block 1. Exemplarily, the resource location may be the starting location of the resource, or the ending location of the resource, or the serial number of the starting location of the resource, or the serial number of the ending location of the resource.

Exemplarily, the first reference position may also be indicated by the second signaling. For example, the first reference location is indicated in the RAR DCI. Exemplarily, the RAR DCI indicates the starting RB sequence number of the first reference position, or, the RAR DCI indicates the first reference position from multiple candidate positions. The above multiple candidate positions may be pre-configured, for example, configured in SIB1. The above multiple candidate positions may also be predefined. Exemplarily, the candidate position is at least one of 1/4*BW, 2/4*BW, and 3/4*BW, where BW is the carrier bandwidth. And/or, the above-mentioned first bandwidth is the bandwidth supported by the terminal equipment, for example, the bandwidth supported by the RedCap UE is 20MHz, or the above-mentioned first bandwidth is indicated by the second signaling, or the above-mentioned first bandwidth is a fixed value, for example, Fixed to 20MHz, or 106RB.

In a possible implementation, the network device may send first signaling to the terminal device, where the first signaling indicates M resources. The M resources include at least one of serial numbers of the M resources, resource locations of the M resources, or the number of resource units included in the M resources. The sequence numbers of the M resources are resource numbers. The resource element may be a resource block (resource block, RB), a resource element group (resource element group, REG) or a control channel element (control channel elements, CCE). The resource position of the resource may be the starting position of the resource, the sequence number of the starting RB of the resource, or the offset of the starting position of the resource relative to the reference position. The reference location can be the starting resource of SSB (synchronization signal block), the location of point A or the location of CRB0 (common resource block 0). For example, the first signaling may be included in system information, system information block or system information block 1.

For example, the first information indicating N resources may be N resources among M resources indicated by the first information, where M is a positive integer greater than or equal to N. Specifically, available resources among the M resources are the first N resources. Where M is greater than or equal to N. For example, when the first information indicates that N=3, the first, second and third resources are available resources. For another example, available resources among the M resources are determined according to parity numbers. Exemplarily, the available resources among the M resources may be determined according to allocating even sequence numbers first and then allocating odd sequence numbers. For example, when the first information indicates that N=3, available resources include resources with

sequence numbers

0 and 2, and resources with sequence number 1. In another example, the first information indicates N available resources among the M resources in a bitmap manner. For example, N resources among the M resources are indicated by bits in the first information. Exemplarily, M=4, and the first information includes 4 bits. Each bit corresponds to a resource. The status of each bit corresponds to whether the resource is available. For example, a bit state of "1" indicates that the resource is available, and a bit state of "0" indicates that the resource is not available. For example, the first information is "0101" to indicate that the second and fourth resources are available.

In a possible implementation, the network device side can determine the resource position of each of the M resources according to the second parameter, and the second parameter can be the second reference position, the second bandwidth, the carrier bandwidth or the subcarrier spacing At least one item, specifically referring to the network device determining the resource location of each of the N resources according to the first parameter; and/or the network device side can determine the resource size of each of the M resources according to the second bandwidth, specifically Refer to the network device determining the resource size of each of the N resources according to the first bandwidth.

S708. The terminal device receives first information from the network device.

In this embodiment of the present application, the terminal device receives the first information sent by the network device in S706. Likewise, at the terminal device side, the first information indicates N resources.

In a possible implementation, the N resources include a resource location of each resource in the N resources and/or a resource size of each resource in the N resources. In a possible implementation, the terminal device may determine the resource location of each of the N resources according to the first parameter. Specifically, for example, the terminal device may determine the resource location of each of the N resources according to the first reference location, the first band, or the carrier bandwidth. Exemplarily, the starting position of resource i=mod((a+i*first bandwidth), carrier bandwidth), a is the first reference position. In another example, the terminal device determines the resource location of each of the N resources according to the first reference location or the first bandwidth. Exemplarily, the first reference position is the starting position of the carrier. For example, the starting position of resource i=i*first bandwidth. Where i=0,1...N; and/or the terminal device determines the resource size of each of the N resources according to the first bandwidth. In a possible implementation, the foregoing first reference position may be predefined. For example, the first reference position is the start position of the carrier, or the end position of the carrier. For example, the resource is the initial uplink bandwidth (Bandwidth Part, BWP), or the downlink initial BWP, or the control resource set (control resource set, CORESET) 0, or the physical downlink control channel (Physical Downlink Control Channel) of the RAR detected , PDCCH) position. In another example, the first reference location is a resource location indicated by a system information block (System information block, SIB) 1. Exemplarily, the resource location may be a starting location of the resource, an ending location of the resource, a serial number of the starting location of the resource, or a serial number of the ending location of the resource. Or, the above-mentioned first reference position may also be indicated by the second signaling. For example, the first reference location is indicated in the RAR DCI. Exemplarily, the RAR DCI indicates the starting RB sequence number of the first reference position, or, the RAR DCI indicates the first reference position from multiple candidate positions. The above multiple candidate positions may be pre-configured, for example, configured in SIB1. The above multiple candidate positions may also be predefined. Exemplarily, the candidate positions are at least one of 1/4*BW, 2/4*BW, and 3/4*BW, where BW is the carrier bandwidth. And/or, the above-mentioned first bandwidth is the bandwidth supported by the terminal equipment, for example, the bandwidth supported by the RedCap UE is 20MHz, or the above-mentioned first bandwidth is indicated by the second signaling, or the above-mentioned first bandwidth is a fixed value, for example, Fixed to 20MHz, or 106RB.

In a possible implementation, the terminal device receives the first signaling sent by the network device in S706, and similarly, the first signaling indicates M resources at the terminal device side. The first information indicating N resources in this step may be the first information indicating N resources among the M resources, specifically referring to the first information on the network device side indicating N resources from the M resources. In a possible implementation, the terminal device side may determine the resource location of each of the M resources according to the second parameter. For details, refer to Determining the resource location of each resource among the N resources by the terminal device according to the first parameter, The second parameter may be at least one of the second reference position, the second bandwidth, the carrier bandwidth or the subcarrier spacing; and/or the terminal device side may determine the resource size of each of the M resources according to the second bandwidth, specifically For reference, the terminal device side determines the resource size of each of the M resources according to the first bandwidth.

S710. The terminal device sends the second information to the network device or receives the second information from the network device on the first resource among the N resources.

Exemplarily, the second information is any one of the following: a second DCI for scheduling retransmission of Msg3. Either Msg3, or the third DCI that schedules the contention resolution message, or the contention resolution message, or the feedback information of the contention resolution message.

S712. The network device receives the second information from the terminal device or sends the second information to the terminal device on the first resource among the N resources.

It should be noted here that when the first information is carried by the first DCI or the first MAC subPDU scrambled by the RA-RNTI, both the terminal device side and the network device side need to determine the third MAC subPDU. This third MAC subPDU is included in the MAC PDU for the random access response. The third MAC subPDU includes a random access preamble identifier, and the random access preamble identifier in the third MAC subPDU is the same as the first identifier corresponding to the random access preamble. Both the terminal device side and the network device side need to determine the first resource among the N resources according to the location information of the third MAC subPDU in the MAC PDU. In a possible implementation, when N=1, directly determine N resources as the first resource. When N>1, the terminal device side and the network device side determine the first resource among the N resources according to the position information of the third MAC subPDU in the MAC PDU. The specific method is as follows:

First, determine the sequence number of the third MAC subPDU. Terminal devices and network devices read PDUs by interpreting each MAC subPDU sequentially starting from the highest bit. It will first read the subheader (for example, fixed 8bits), and determine the type of the MAC subPDU, whether the MAC subPDU only includes the subheader or whether the MAC subPDU is the last MAC subPDU according to the information therein. If the MAC subPDU also includes MAC RAR, it will further interpret the content according to the length of MAC RAR. If only the subheader is included in the MAC subPDU, it will continue to read the next subheader until it is determined that the MAC subPDU corresponding to the subheader is the last MAC subPDU. According to this sequence, the terminal device and the network device can obtain the MAC subPDU corresponding to the terminal device is the first MAC subPDU, that is, the sequence number of the MAC subPDU of the terminal device in the entire MAC PDU, that is, the sequence number of the third MAC subPDU.

Then, both the terminal device and the network device can determine the first resource among the N resources according to the sequence number of the third MAC subPDU. For example, the sequence number of the third MAC subPDU is i, and the terminal device and the network device determine the first resource according to mod(i, N). Exemplarily, as shown in FIG. 8, N=4, resource sequence number=mod(sequence number of the third MAC subPDU, 4). For example, the terminal device that detects in MAC subPDU1/MAC subPDU5/MAC subPDU9... the RAR message corresponding to the previously sent random access preamble performs information transmission in resource 1. In MAC subPDU2/MAC subPDU6/MAC subPDU10..., the terminal device that detects the RAR message corresponding to the previous random access preamble preamble transmits information in resource 2. In MAC subPDU3/MAC subPDU7/MAC subPDU11..., the terminal device that detects the RAR message corresponding to the previously sent random access preamble preamble performs information transmission in resource 3. In MAC subPDU4/MAC subPDU8/MAC subPDU12..., the terminal device that detects and sends the RAR message corresponding to the random access preamble before transmits information in resource 4.

In a possible implementation, as an alternative manner, the terminal device and the network device may determine the first resource among the N resources according to the sequence number of the random access preamble. Specifically, for example, the sequence number of the random access preamble is j, and the terminal device and the network device determine the first resource according to mod(j, N).

The network device in the foregoing method may send system information, where the system information includes the foregoing first signaling and/or the foregoing second signaling. Correspondingly, the terminal device receives system information. For example, the system information can be system message block 1, or other system message blocks.

The above solution uses the third MAC subPDU and the number of available resources N to take the modulus, and evenly distributes the terminal devices to different resources, which can achieve the effect of network load balancing, and does not require additional signaling overhead.

It should be noted here that the value of N in the aforementioned S706 and S708 may be determined according to the TBS of Msg2PDSCH/number of fed back RAR information/number of allocated resources (number of RBs), rather than indicated by signaling. For example, it is determined according to a preset or preconfigured threshold and the above parameters. For example, if the preset 2 threshold values are TH1 and TH2, then if TBS≤TH1, use 1 resource, if share the same resource with legacy UE; TH1<TBS≤TH2, use 2 resources; TH2<TBS, Use 3 resources. The number N of available resources is determined in the above manner without additional indication of the number N, which saves signaling overhead. For example, TBS (transmission block size) is the transmission block size.

In a possible implementation, the first information is carried by the second MAC subPDU. The second MAC subPDU includes MAC RAR, and the subheader of the second MAC subPDU includes a random access preamble. For example, the first information indicates the first resource among the L resources. For example, L=2. For example, a network device is configured with two initial BWPs. The subPDU including the MAC RAR includes the first information. The first information indicates one of the two initial BWPs, which is used to transmit the second information.

Example 2:

If the network device is configured with multiple ROs in the frequency domain and/or time domain, each RO will be associated with a RAR DCI and a RAR. As a result, the problem of high overhead of PDCCH and PDSCH is caused, and further, CORESET0 and/or initial BWP generate congestion. To solve this problem, consider multiple ROs associated with the same RAR DCI and/or RAR. In this way, UEs accessed in different ROs can share the same RAR, DCI and/or RAR, thereby saving access resources. For example, as shown in Figure 9, ROs with different frequency domains are associated with the same RAR DCI and/or RAR. As shown in Figure 10, ROs with the same time domain are associated with the same RAR DCI and/or RAR. Wherein, the RAR DCI is the downlink control information DCI scrambled by the RA-RNTI. RAR is the MAC PDU used for random access response, and carries the MAC PDU of random access response.

As an embodiment of the present invention, the terminal device sends a random access preamble in the first RO. The terminal device receives a MAC PDU including a random access response of the random access preamble. The MAC PDU includes RO information, and the RO information is used to indicate the MAC subPDU corresponding to the RO. The MAC PDU includes at least 2 types of random access responses. Different types of random access responses among the at least two types of random access responses correspond to random access preambles sent by different ROs. For example, the MAC subPDU corresponding to the RO is the random access response corresponding to the random access preamble sent in the RO.

As an embodiment of the present invention, the network device receives the random access preamble in the first RO. The network device sends a MAC PDU that includes a random access response to the random access preamble. The MAC PDU includes RO information, and the RO information is used to indicate the MAC subPDU corresponding to the RO. The MAC PDU includes at least 2 types of random access responses, and different types of random access responses in the at least 2 types of random access responses correspond to random access preambles received in different ROs. For example, the MAC subPDU corresponding to the RO is the random access response corresponding to the random access preamble received in the RO.

Specifically, as an embodiment of the present invention, the T field in the subheader of the MAC subPDU is 0, and the MAC subPDU is not the beginning of the MAC PDU, at least one RAPID and/or at least one RAR and the first type of random access associated. The T field in the subheader of the MAC subPDU is 1, and at least one RAPID and/or at least one RAR in the MAC subPDU is associated with the second type of random access.

For example, the RO associated with each MAC subPDU in the MAC PDU message is determined through the subheader included in the MAC PDU. For another example, the MAC subPDU is a MAC subPDU including only RAPID, or a MAC subPDU including RAPID and MAC RAR.

For example, the RO associated with the MAC subPDU is indicated by the T field in the subheader of the MAC subPDUn (n is a positive integer greater than 1). For example, the MAC subPDUs of the RARs associated with each RO are sequentially arranged in the MAC PDU. Or for example, the T field in the MAC subPDU of the MAC RAR associated with a MAC PDU can be equal to 1. For example, this MAC subPDU is associated with a second type of random access. For example, the second type is a second type UE, or a legacy UE, or an R15 or R16 UE, or an eMBB UE. For example, the MAC subPDU is associated with the second type of random access because the MAC subPDU includes the MAC RAR of the second type UE, or because the MAC subPDU is associated with the second RO.

For example, the T field in the MAC subPDU of the MAC RAR not associated with the first RO in the MAC PDU is equal to 0. For example, the MAC subPDU is associated with the first type of random access. For example, the first type is a first type UE, or a RedCap UE, or a low complexity UE. For example, the MAC subPDU is associated with the first type of random access because the MAC subPDU includes the MAC RAR of the first type UE, or because the MAC subPDU is associated with the first RO.

For example, the first RO and the second RO calculate the associated RA-RNTI in different ways. For example, ROs with different time domain resources have the same RA-RNTI, or ROs with different frequency domain resources have the same RA-RNTI, or ROs with the same time domain resources have different RA-RNTIs, or ROs with the same time domain resources have RA-RNTI RNTIs are different. For example, time domain resources may be symbols, slots, subframes, radio frames, subslots or minislots. For example, the frequency domain resource is a carrier, a subcarrier, a resource block RB, a resource element RE, a resource block group RBG or BWP.

For example, as shown in Figure 11. The random access response of the random access preamble sent by RO X is carried in the N+A MAC subPDU. Wherein, N=0 or 1 or 2. For example, N=0, the MAC PDU does not include BI and system message request responses. For example, N=1, the MAC PDU includes BI or system message request response. For example, N=2, the MAC PDU includes BI and system message request response. Field T=1 in the N+A MAC subPDU. As shown in FIG. 11 , N=2, and A is a positive integer less than or equal to 2. That is, the random access response sent by the RO X to the random access preamble is carried on MAC subPDU3 and MAC subPDU4.

For example, the random access response of the random access preamble sent by RO Y is carried in the N+A+B MAC subPDU. Field T=0 or 1 in the N+A+B MAC subPDU. As shown in FIG. 11 , B is a positive integer less than or equal to 2. That is, the random access response sent by RO Y to the random access preamble is carried on MAC subPDU5 and MAC subPDU6.

For example, the random access response of the random access preamble sent by RO Z is carried in the N+A+B+C MAC subPDU. Field T=0 in the N+A+B+C MAC subPDU. As shown in FIG. 11 , C is a positive integer less than or equal to 2. That is, the random access response of sending the random access preamble in RO Z is carried on MAC subPDU7 and MAC subPDU8.

For example, MAC subPDUm may only include subheader. For example, after the first set of MAC subPDUs, or before the second set of MAC subPDUs, add a subheader. The first group of MAC subPDUs corresponds to the random access response of the random access preamble sent at the RO X. The second group of MAC subPDUs corresponds to the random access response for sending the random access preamble in RO Y. As shown in Figure 11, a subheader is sent between MAC subPDU4 and MAC subPDU5.

For example, MAC PDU uses subheader to include RO information. The RO information is used to indicate at least one of the following: the serial number of the RO, the time domain resource of the RO, the frequency domain resource of the RO, the frequency domain serial number of the RO, the time domain serial number of the RO, the starting symbol serial number of the RO, the The sequence number of the start slot, the sequence number of the end symbol of the RO, the sequence number of the end slot of the RO, or the sequence number of the SSB corresponding to the RO.

Specifically, for example, the composition of the subheader is shown in Table 1 below. For example, the MAC subheader including RO includes 4 domains/fields: E/T/RO information/BI. Such as T=0.

Table 1

For example, the MAC subheader including RO includes 4 types of information: E/T/R/RO information. Wherein, R is a reserved field. For example, the subheader includes a1 bits of R or a1 Rs. For example, the subheader includes b1 bits of RO information. a1 is an integer, b1 is a positive integer. For example, the composition of the subheader is shown in Table 2 below, a1=2, b1=4, then the MAC subheader including RO includes 5 domains/fields: E/T/R/R/RO information. For another example, the composition of the subheader is shown in Table 3 below, a1=0, b1=6, then the MAC subheader including RO includes 3 domains/fields: E/T/RO information. For another example, the composition of the subheader is shown in Table 4 below, a1=4, b1=2, then the MAC subheader including RO includes 7 domains/fields: E/T/R/R/R/R/RO information. Such as T=0.

Table 2

table 3

Table 4

As shown in Table 5 below, the MAC subheader including RO includes 4 domains/fields: E/T/RO information/RAPID. For example, the subheader includes a2 bits of RO information. For example, the subheader includes b2 bits of RAPID information. Among them, a2 is an integer, and b2 is a positive integer. For example, at this time, the maximum number of RAPIDs configured by the RO is 2^4=16. Such as T=0.

table 5

For example, the indication of the RO information may be to directly indicate the RO information, or may be in a bitmap manner.

For example, the RO information indicates that the MAC RAR included in the MAC PDU corresponds to K ROs, and the RO information is used to indicate the k-th RO in the K ROs. Wherein, K is a positive integer, k=0,1,...K-1. For example, K=4, RO information includes 2 bits. If the bit status of the RO information is 00, the RO information indicates the 0th RO. If the bit status of the RO information is 01, the RO information indicates the first RO. If the bit status of the RO information is 10, the RO information indicates the second RO. If the bit state of the RO information is 11, the RO information indicates the third RO.

For example, the RO information may indicate one or more ROs in a bitmap manner. For example, the RO information indicates that the MAC RAR included in the MAC PDU corresponds to L ROs, and the RO information is used to indicate at least one RO in the L ROs. Wherein, L is a positive integer. For example, L=4, the RO information includes 4 bits, and each bit corresponds to one RO. For example, the correspondence between RO and bits is arranged in sequence. The order is arranged such that the bits from the highest bit to the lowest bit correspond to the frequency domain sequence number of the RO from small to large, or the bits from the highest bit to the lowest bit correspond to the time domain sequence number of the RO from small to large. For example, the bit state of the RO information is 0100, and the RO information indicates the second RO. For example, the bit state of the RO information is 0110, and the RO information indicates the second RO and the third RO.

For example, the terminal device reports whether it supports multiple ROs associated with the same RAR PDCCH and/or RAR PDSCH. For example, if the terminal device reports that it does not support it, the terminal device does not expect the network device to associate multiple ROs with the same RAR, or the network device cannot associate multiple ROs with the same RAR PDCCH and/or RAR PDSCH. For example, if the terminal device reports support, the network device can associate multiple ROs with the same RAR PDCCH and/or RAR PDSCH.

For example, the network device indicates through signaling to enable or disable the association of multiple ROs to the same PDCCH/PDSCH. For example, the signaling is the SIB. For example, the network device configures parameter information, and according to the parameter information, it can be determined which ROs are associated with the same PDCCH/PDSCH. For example, configuration parameter information is carried in the SIB. A special case is that different ROs are associated with different PDCCH/PDSCH.

Example 3:

As an embodiment of the present invention, the BWP of the terminal device is a BWP located on one side of the carrier, or a BWP located on both sides of the carrier, or a BWP including the first resource. For example, the terminal equipment is a RedCap UE, or a low complexity UE.

For example, the BWP on the carrier side is a BWP whose resources are all less than or equal to the frequency resource x in the carrier, or a BWP whose resources are all greater than or equal to the frequency resource y. For example, the BWPs on both sides of the carrier are BWPs including resources less than or equal to frequency resource x in the carrier and BWPs including resources greater than or equal to frequency resource y. For example, x is a positive integer and y is a positive integer. For example, x is 20Mhz, or the 106th RB, or the 51st RB. For example, y is 80Mhz, or is the 175th RB, or is the 170th RB, or is the 224th RB, or is the (number of RBs included in the carrier-106) RB.

For example, the first resource is at least one of the following items: at least one RB among the m RBs with the lowest sequence number in the carrier, or at least one RB among the m RBs with the highest sequence number in the carrier. For example, m=1, or m=4.

For example, the BWP is an initial BWP, a default initial BWP, a default candidate BWP, or a default candidate initial BWP. For example, the candidate BWPs are multiple BWPs, and the UE may select at least one BWP from the multiple BWPs through signaling or rules.

For example, there are N initial BWPs of the terminal equipment. For example, N=1 or N=2. That is, the BWP at one end of the carrier can be used as a default initial BWP. Alternatively, the BWPs at both ends of the carrier may serve as two default initial BWPs.

For example, in Figure 12, BWP-a and BWP-b are the BWPs on both sides of the carrier.

FIG. 13 shows a schematic structural diagram of an apparatus for determining resources provided by an embodiment of the present application. The resource determining apparatus 1300 may be the terminal device in FIG. 4 , FIG. 5 , or FIG. 6 , and is configured to implement the execution steps of the terminal device in the above method embodiments. The resource determination device may also be the first network device or the second network device in FIG. 4, or the network device in the RAN in FIG. 5 and FIG. 6, such as CU, DU, CU-CP, or CU-UP, It is used to implement the method corresponding to the first network device or the second network device in the foregoing method embodiments. For specific functions, refer to the descriptions in the foregoing method embodiments.

The resource determination device 1300 includes one or more processors 1301 . The processor 1301 may also be referred to as a processing unit, and may implement certain control functions. The processor 1301 may be a general-purpose processor or a special-purpose processor. For example, including: baseband processor, central processing unit, application processor, modem processor, graphics processor, image signal processor, digital signal processor, video codec processor, controller, memory, and/or Neural Network Processor, etc. The baseband processor can be used to process communication protocols and communication data. The central processing unit can be used to control the resource determination device 1300, execute software programs and/or process data. Different processors may be independent devices, or may be integrated in one or more processors, for example, integrated in one or more application-specific integrated circuits.

Optionally, the resource determining device 1300 includes one or more memories 1302 for storing instructions 1304, and the instructions can be executed on the processor, so that the resource determining device 1300 executes the methods described in the above method embodiments . Optionally, data may also be stored in the memory 1302 . The processor and memory can be set separately or integrated together.

Optionally, the resource determining apparatus 1300 may include an instruction 1303 (sometimes also referred to as a code or a program), and the instruction 1303 may be executed on the processor, so that the resource determining apparatus 1300 executes the Methods. Data may be stored in the processor 1301 .

Optionally, the resource determining apparatus 1300 may further include a transceiver 1305 and an antenna 1306 . The transceiver 1305 may be called a transceiver unit, a transceiver, a transceiver circuit, a transceiver, an input and output interface, etc., and is used to implement the transceiver function of the resource determining device 1300 through the antenna 1306 .

Optionally, the resource determining device 1300 may also include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (universal serial bus, USB) interface, a power management module, and an antenna , speakers, microphones, input and output modules, sensor modules, motors, cameras, or displays, etc. It can be understood that, in some embodiments, the UE 1300 may include more or fewer components, or some components may be integrated, or some components may be split. These components may be realized by hardware, software, or a combination of software and hardware.

The processor 1301 and transceiver 1305 described in this application can be implemented in integrated circuit (integrated circuit, IC), analog IC, radio frequency integrated circuit (radio frequency identification, RFID), mixed signal IC, application specific integrated circuit (application specific integrated circuit) , ASIC), printed circuit board (printed circuit board, PCB), or electronic equipment, etc. The communication device described herein can be an independent device (for example, an independent integrated circuit, a mobile phone, etc.), or it can be a part of a larger device (for example, a module that can be embedded in other devices). For details, please refer to the aforementioned The description of the terminal equipment and the network equipment will not be repeated here.

An embodiment of the present application provides a terminal device, and the terminal device (referred to as UE for convenience of description) may be used in the foregoing embodiments. The terminal device includes corresponding means, units and/or circuits for realizing the UE functions described in the embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 . For example, the terminal device includes a transceiver module, configured to support the terminal device to implement a transceiver function, and a processing module, configured to support the terminal device to process signals.

FIG. 14 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application.

The terminal device 1400 may be applicable to the systems shown in FIG. 4 , FIG. 5 , and FIG. 6 . For ease of description, FIG. 14 only shows main components of a terminal device 1400 . As shown in FIG. 14 , a terminal device 1500 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process communication protocols and communication data, control the entire terminal device 1400, execute software programs, and process data of the software programs. Memory is primarily used to store software programs and data. The control circuit is mainly used for conversion of baseband signal and radio frequency signal and processing of radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, microphones, keyboards, etc., are mainly used to receive data input by users and output data to users.

Taking the terminal device 1400 as a mobile phone as an example, when the terminal device 1400 is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit, and the control circuit performs radio frequency processing on the baseband signal, and sends the radio frequency signal through the antenna in the form of electromagnetic waves. When data is sent to the terminal device 1400, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data .

Those skilled in the art can understand that, for ease of description, FIG. 14 only shows a memory and a processor. In some embodiments, terminal device 1400 may include multiple processors and memories. A memory may also be called a storage medium or a storage device, which is not limited in this embodiment of the present invention.

As an optional implementation, the processor may include a baseband processor and a central processing unit, the baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal device 1400, Executing the software program, processing the data of the software program. The processor in FIG. 14 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors, interconnected through technologies such as a bus. The terminal device 1400 may include multiple baseband processors to adapt to different network standards, the terminal device 1400 may include multiple central processors to enhance its processing capability, and various components of the terminal device 1400 may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In an example, the antenna and the control circuit with the transceiver function may be regarded as the transceiver unit 1410 of the terminal device 1400 , and the processor with the processing function may be regarded as the processing unit 1420 of the terminal device 1400 . As shown in FIG. 14 , a terminal device 1400 includes a transceiver unit 1410 and a processing unit 1420 . The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like. Optionally, the device in the transceiver unit 1410 for realizing the receiving function can be regarded as a receiving unit, and the device in the transceiver unit 1410 for realizing the sending function can be regarded as a sending unit, that is, the transceiver unit 1410 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be called a receiver, receiver, receiving circuit, etc., and the sending unit may be called a transmitter, transmitter, or transmitting circuit, etc.

The embodiment of the present application also provides a network device, which can be used in the foregoing embodiments. The network device includes means, units and/or circuits for realizing the functions of the first network device or the second network device described in the embodiments shown in FIG. 4 , FIG. 5 , and FIG. 6 . For example, the network device includes a transceiver module, configured to support the terminal device to implement the transceiver function, and a processing module, configured to support the network device to process signals. It can be understood that the first network device and the second network device are relative to one or some UEs, and relative to some other UEs, the role of the first online course device and the second network device can be exchange.

FIG. 15 shows a schematic structural diagram of a network device provided by an embodiment of the present application. As shown in FIG. 15 , the network device 20 may be applicable to the systems shown in FIG. 4 , FIG. 5 , and FIG. 6 . The network device includes: a baseband device 201 , a radio frequency device 202 , and an antenna 203 . In the uplink direction, the radio frequency device 202 receives the information sent by the terminal device through the antenna 203, and sends the information sent by the terminal device to the baseband device 201 for processing. In the downlink direction, the baseband device 201 processes the information of the terminal device and sends it to the radio frequency device 202 , and the radio frequency device 202 processes the information of the terminal device and sends it to the terminal device through the antenna 203 .

The baseband device 201 includes one or more processing units 2011 , a storage unit 2012 and an interface 2013 . The processing unit 2011 is configured to support the network device to execute the functions of the network device in the foregoing method embodiments. The storage unit 2012 is used to store software programs and/or data. The interface 2013 is used for exchanging information with the radio frequency device 202, and the interface includes an interface circuit for input and output of information. In one implementation, the processing unit is an integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip. The storage unit 2012 and the processing unit 2011 may be located in the same chip, that is, an on-chip storage element. Alternatively, the storage unit 2012 and the processing unit 2011 may also be located on different chips from the processing unit 2011, that is, an off-chip storage unit. The storage unit 2012 may be one memory, or a general term for multiple memories or storage elements.

Those skilled in the art can appreciate that the units and steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. The units described as separate components may or may not be physically separated. The components shown may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the 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 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 computer-readable storage medium may be any available medium that can be accessed by a computer. Take this as an example but not limited to: the computer readable medium may include random access memory (random access memory, RAM), 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 erasable programmable read only memory, EEPROM), compact disc read-only memory (compact disc read-only memory, CD- ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, magnetic disk storage medium, or other magnetic storage device, or can be used to carry or store desired data in the form of instructions or data structures program code and any other medium that can be accessed by a computer. Additionally, by way of illustration and not limitation, many forms of RAM are available, such as static random access memory (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 (synchlink DRAM) , SLDRAM) or direct memory bus random access memory (direct rambus RAM, DR RAM).

The above is only the specific implementation of the application, but the protection scope of the embodiment of the application is not limited thereto, and any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed in the embodiment of the application Or replacement, should be covered within the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims

A method for determining resources, applied to a terminal device side, characterized in that the method includes:

Send a random access preamble;

Acquire first information, where the first information indicates N resources, where N is a positive integer;

The first information is carried by the first downlink control information DCI, the first MAC subPDU or the second MAC subPDU scrambled by the random access radio network temporary identifier RA-RNTI, and the first MAC subPDU is included in the random access In the MAC PDU of the response, and the subheader of the first MAC subPDU does not include the random access preamble; the second MAC subPDU is included in the MAC PDU of the random access response, and the second MAC subPDU contains the MAC RAR, and the subhead of the second MAC subPDU includes a random access preamble;

Sending or receiving second information on a first resource among the N resources, where the second information is any of the following:

Scheduling the second DCI for retransmission of Msg3; or

Msg3; or

a third DCI dispatching a contention resolution message; or

contention resolution messages; or

Feedback information for contention resolution messages.
The method according to claim 1, wherein the N resources include a resource location of each of the N resources and/or a resource size of each of the N resources.
The method according to claim 1 or 2, characterized in that the method further comprises:

Acquiring first signaling, where the first signaling indicates M resources;

The first information indicates that the N resources include:

The first information indicates the N resources from the M resources, where M is a positive integer greater than or equal to N.
The method according to any one of claims 1-3, wherein the first information is carried by the first DCI or the first MAC subPDU scrambled by the RA-RNTI, and the method further comprises:

determining a third MAC subPDU, the third MAC subPDU included in the MAC PDU used for the random access response, the third MAC subPDU including a random access preamble, and the random access in the third MAC subPDU The preamble identifier is the same as the first identifier corresponding to the random access preamble;

Determine the first resource among the N resources according to the position information of the third MAC subPDU in the MAC PDU.
The method according to claim 2, further comprising:

Determine the resource location of each of the N resources according to a first parameter, where the first parameter includes at least one of a first reference location, a first bandwidth, a value of N, a carrier bandwidth, and a subcarrier spacing. ;and / or

Determine the resource size of each of the N resources according to the first bandwidth.
The method according to claim 5, wherein the first reference position is predefined, or the first reference position is indicated by the second signaling; and/or,

The first bandwidth is a bandwidth supported by the user equipment, or the first bandwidth is indicated by the second signaling.
The method according to claim 3, further comprising:

Determine the resource location of each of the M resources according to a second parameter, where the second parameter includes at least one of a second reference location, a second bandwidth, a carrier bandwidth, and a subcarrier spacing; and/or

Determine the resource size of each of the M resources according to the second bandwidth.
The method according to claim 6 or 7, characterized in that the method further comprises:

Receive system information, where the system information includes the first signaling and/or the second signaling.
A method for determining resources, applied to a network device side, characterized in that the method includes:

receiving a random access preamble;

Sending first information, where the first information indicates N resources, where N is a positive integer;

The first information is carried by the first downlink control information DCI, the first MAC subPDU or the second MAC subPDU scrambled by the random access radio network temporary identifier RA-RNTI, and the first MAC subPDU is included in the random access In the MAC PDU of the response, and the subheader of the first MAC subPDU does not include the random access preamble; the second MAC subPDU is included in the MAC PDU of the random access response, and the second MAC subPDU contains the MAC RAR, and the subhead of the second MAC subPDU includes a random access preamble;

receiving or sending second information on a first resource among the N resources, where the second information is any of the following:

Scheduling the second DCI for retransmission of Msg3; or

Msg3; or

a third DCI dispatching a contention resolution message; or

contention resolution messages; or

Feedback information for contention resolution messages.
The method according to claim 9, wherein the N resources include a resource location of each of the N resources and/or a resource size of each of the N resources.
The method according to claim 9 or 10, characterized in that the method further comprises:

sending first signaling, where the first signaling indicates M resources;

The first information indicates that the N resources include:

The first information indicates the N resources from the M resources, where M is a positive integer greater than or equal to N.
The method according to any one of claims 9-11, wherein the first information is carried by the first DCI or the first MAC subPDU scrambled by the RA-RNTI, and the method further comprises:

determining a third MAC subPDU, the third MAC subPDU included in the MAC PDU used for the random access response, the third MAC subPDU including a random access preamble, and the random access in the third MAC subPDU The preamble identifier is the same as the first identifier corresponding to the random access preamble;

Determine the first resource among the N resources according to the position information of the third MAC subPDU in the MAC PDU.
The method according to claim 10, characterized in that the method further comprises:

Determine the resource location of each of the N resources according to a first parameter, where the first parameter includes at least one of a first reference location, a first bandwidth, a value of N, a carrier bandwidth, and a subcarrier spacing. ;and / or

Determine the resource size of each of the N resources according to the first bandwidth.
The method according to claim 13, wherein the first reference position is predefined, or the first reference position is indicated by the second signaling; and/or,

The first bandwidth is a bandwidth supported by the user equipment, or the first bandwidth is indicated by the second signaling.
The method according to claim 11, characterized in that the method further comprises:

Determine the resource location of each of the M resources according to a second parameter, where the second parameter includes at least one of a second reference location, a second bandwidth, a carrier bandwidth, and a subcarrier spacing; and/or

Determine the resource size of each of the M resources according to the second bandwidth.
The method according to claim 14 or 15, wherein the method further comprises:

Send system information, where the system information includes the first signaling and/or the second signaling.
A device for determining resources, characterized in that it includes at least one processor, the processor is used to execute instructions stored in the memory, so that the method according to any one of claims 1-8 or claims 9-16 is executed .
A computer program product containing instructions, characterized in that, when the computer program product is run on a computer, the method according to any one of claims 1-8 or 9-16 is executed by the computer.
A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor,

The method according to any one of claims 1-8 or claims 9-16 is performed.