CN109152080B - Random access response method, network equipment and terminal equipment - Google Patents

Abstract

This application discloses a random access response method, network equipment, and terminal equipment. The method includes: the network device sends a random access response to the terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes an index field of a k-bit random access preamble and/or a random access response. The index field of the access resource, where k is a positive integer greater than 6. Corresponding network equipment and terminal equipment are also disclosed. Using the technical solution of this application, an index field of a random access preamble and/or an index field of a random access resource larger than 6 bits can be included in the MAC PDU, thereby supporting more random access preambles or random access resources.

Description

Random access response method and network equipment and terminal equipment

Technical field

The present invention relates to the field of communication technology, and in particular, to a random access response method, network equipment, and terminal equipment.

Background technique

In the long term evolution (long term evolution, LTE) system, the random access (random access, RA) process and the random access response flow are shown in Figure 1. During random access, the terminal device first sends a random access preamble to the network device, where the preamble carries a preamble sequence, and the preamble sequence distinguishes the terminal device during random access and estimates the time delay. There are multiple preamble formats defined in LTE, and the time length of each format is different. The preamble format used by the current network is specified in the downlink system information. In an LTE cell, there are 64 random access preamble sequences. In LTE, after sending a random access preamble, the terminal device needs to wait for a random access response from the receiving network device. Then perform other information exchanges (such as message 3), as shown in Figure 1.

The format of the medium access control (MAC) protocol data unit (PDU) of the random access response in LTE is shown in Figure 2. The MAC PDU of the random access response includes two parts: MAC header (MAC header) and payload. The MAC header is composed of multiple sub-headers, each sub-header is one byte (8 bits) long. There is one subheader used for information indication (this subheader is used to carry the fallback indication, this subheader is optional), and the other subheaders are used for random access response (random access response, RAR). The payload contains the specific content of the random access response. The subheader for RAR in the MAC header corresponds one-to-one to the RAR in the payload. The RAR subheader consists of three fields, namely the first two fields (extension (E), type (T), which are used as indicator bits to indicate the role of subsequent bytes and the type of the subheader) and a 6-bit random Access preamble index (random access preamble id, RAPID) field, 6 bits of which indicate the random access preamble index.

In the next generation wireless communication network, beam forming technology is used, and the energy of each beam signal will be limited to a certain area. Therefore, the network equipment sends multiple downlink signals to achieve full coverage of the cell. Figure 3 is a schematic diagram of the relationship between downlink signals, random access resources, and preambles. Each downlink signal is associated with one or more random access resources/preambles. In the coverage area of a downlink beam, multiple terminal devices may use the random access resources/preamble associated with the beam to perform random access. The number of random access resources/preambles is too small, resulting in a higher probability of collision. Therefore, in order to maintain a relatively low collision probability, NR has higher requirements on the number of random access preambles or random access resources. The number of preamble sequences may exceed 64, or there may be multiple time and frequency resources. In LTE, the 6-bit RAPID supports up to 64 random access preambles or preamble sequences, which cannot meet the demand. Therefore, there is an urgent need to provide a solution that supports more random access resources/preambles.

Contents of the invention

This application provides a random access response method, network equipment, and terminal equipment to support more random access resources/preambles.

In one aspect of the present application, a random access response method is provided, including: a network device sends a random access response to a terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes k The index field of the bit random access preamble and/or the index field of the random access resource, where k is a positive integer greater than 6. In this implementation, the index field of the random access preamble and/or the index field of the random access resource that is larger than 6 bits can be included in the MAC PDU, thereby supporting more random access preambles or random access resources. When multiple terminal devices are connected to network equipment, the probability of conflict can be reduced.

Another aspect of the present application provides a random access response method, including: a terminal device receiving a random access response from a network device, wherein the media access control layer protocol data unit MAC PDU of the random access response An index field including a k-bit random access preamble and/or an index field of a random access resource, where k is a positive integer greater than 6. In this implementation, the index field of the random access preamble and/or the index field of the random access resource that is larger than 6 bits can be included in the MAC PDU, thereby supporting more random access preambles or random access resources. When multiple terminal devices are connected to network equipment, the probability of conflict can be reduced.

In a possible implementation, the MAC PDU also includes the time index and/or frequency index of the random access preamble or random access preamble sequence detected by the network device, wherein the time index is located at at least one In the random access response sub-header and/or payload, the frequency index is located in at least one random access response sub-header and/or payload; after the terminal device receives the random access response from the network device, it also includes: The terminal device parses the MAC PDU of the random access response, and obtains the MAC PDU for the terminal device according to the time index and/or frequency index of the random access preamble or the random access preamble sequence sent by the terminal device. Random access response. In this implementation, for the preamble index or preamble sequence index corresponding to the same random access resource at each time-frequency position, the random access resources are further distinguished by time index and/or frequency index.

Combining one aspect and another aspect of the present application, in a possible implementation, the MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one random access response subheader; The random access preamble index field and/or the index field of the random access resource are located in the at least one random access response sub-header. In this implementation, the random access preamble index field and/or the index field of the random access resource are located in the random access response sub-header.

Combining one aspect and another aspect of the present application, in another possible implementation, the MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one random access response subheader; The index field of the random access preamble is located in the at least one random access response sub-header and the payload; or the index field of the random access resource is located in the at least one random access response sub-header and the in the payload; or the index field of the random access preamble and the index field of the random access resource are located in the at least one random access response sub-header and the payload. In this implementation, the index field of the random access preamble and/or the index field of the random access resource is located in the random access response sub-header and payload.

Combining one aspect and another aspect of the present application, in yet another possible implementation manner, the index field of the random access preamble and/or the index field of the random access resource is located in the payload of the random access response.

Combining one aspect and another aspect of the present application, in yet another possible implementation manner, the random access preamble includes at least one random access preamble sequence, and the random access preamble index field includes the at least one random access preamble sequence. The index field of the leader sequence. In this implementation, the random access preamble index field also includes an index field of the random access preamble sequence.

Combined with one aspect and another aspect of the present application, in yet another possible implementation, the MAC PDU also includes the time index and/or of the random access preamble or random access preamble sequence detected by the network device. Frequency index, wherein the time index is located in at least one random access response sub-header and/or payload, and the frequency index is located in at least one random access response sub-header and/or payload. In this implementation, for the preamble index or preamble sequence index corresponding to the same random access resource at each time-frequency position, the random access resources are further distinguished by time index and/or frequency index.

Another aspect of the present application provides a network device, which has the function of realizing the network device behavior in the above method. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible implementation, the network device includes: a sending unit, configured to send a random access response to the terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes k bits. The index field of the random access preamble and/or the index field of the random access resource, where k is a positive integer greater than 6.

In another possible implementation, the network device includes: a receiver, a transmitter, a memory, and a processor; wherein a set of program codes is stored in the memory, and the processor is configured to call a set of program codes stored in the memory. The program code performs the following operations: sending a random access response to the terminal device through the transmitter, wherein the media access control layer protocol data unit MAC PDU of the random access response includes a k-bit random access preamble. The index field and/or the index field of the random access resource, where k is a positive integer greater than 6.

Based on the same inventive concept, since the principle of solving the problem and the beneficial effects of the device can be referred to the above-mentioned method implementation of each possible network device and the beneficial effects thereof, the implementation of the device can be referred to the implementation of the method, and there will be no duplication. Again.

Another aspect of the present application provides a terminal device, which has the function of realizing the terminal device behavior in the above method. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible implementation, the terminal device includes: a receiving unit, configured to receive a random access response from the network device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes k The index field of the bit random access preamble and/or the index field of the random access resource, where k is a positive integer greater than 6.

In another possible implementation, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein a set of program codes is stored in the memory, and the processor is configured to call a set of program codes stored in the memory. The program code performs the following operations: receiving a random access response from the network device through the receiver, wherein the media access control layer protocol data unit MAC PDU of the random access response includes a k-bit random access preamble. The index field and/or the index field of the random access resource, where k is a positive integer greater than 6.

Based on the same inventive concept, since the problem-solving principle and beneficial effects of this device can be referred to the above-mentioned method implementations of each possible terminal equipment and the beneficial effects thereof, the implementation of this device can be referred to the implementation of the method, and there will be no duplication. Again.

In another aspect of the present application, a random access response method is provided, including: a network device sends a random access response to a terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes MAC header and payload. The MAC header includes at least one information sub-header, wherein the information sub-header includes at least one of the following fields: an indication field and a setting field. The indication field is used to indicate the type of information included in the setting field. , the setting field includes at least one kind of information; wherein the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals, and the parameter information of the subsequent signals includes at least one of the following: frequency location information, subcarrier spacing information, waveform information, frame structure information and transmission time information. In this implementation, more information may be indicated in the MAC sub-header.

In another aspect of the present application, a random access response method is provided, including: a terminal device receiving a random access response from a network device, wherein the media access control layer protocol data unit MAC PDU of the random access response Including a MAC header and a payload, the MAC header includes at least one information sub-header, wherein the information sub-header includes at least one of the following fields: an indication field and a setting field, and the indication field is used to indicate the information included in the setting field. Type, the setting field includes at least one kind of information; wherein the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals, and the parameter information of the subsequent signals includes at least one of the following: frequency Location information, subcarrier spacing information, waveform information, frame structure information and transmission time information. In this implementation, more information may be indicated in the MAC sub-header.

On the other hand, a network device is provided, and the network device has the function of realizing the network device behavior in the above method. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible implementation, the network device includes: a sending unit, configured to send a random access response to the terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes a MAC header. and a load, the MAC header includes at least one information sub-header, wherein the information sub-header includes at least one of the following fields: an indication field and a setting field. The indication field is used to indicate the type of information included in the setting field, so The setting field includes at least one kind of information; wherein the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals, and the parameter information of the subsequent signals includes at least one of the following: frequency location information, Subcarrier spacing information, waveform information, frame structure information and transmission time information.

In another possible implementation, the network device includes: a receiver, a transmitter, a memory, and a processor; wherein a set of program codes is stored in the memory, and the processor is configured to call a set of program codes stored in the memory. The program code performs the following operations: sending a random access response to the terminal device through the transmitter, wherein the media access control layer protocol data unit MAC PDU of the random access response includes a MAC header and a payload, and the MAC The header includes at least one information sub-header, wherein the information sub-header includes at least one of the following fields: an indication field and a setting field. The indication field is used to indicate the type of information included in the setting field. The setting field includes at least one kind of information; wherein, the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals, and the parameter information of the subsequent signals includes at least one of the following: frequency location information, subcarrier spacing information, waveform information, frame structure information and sending time information.

Based on the same inventive concept, since the principle of solving the problem and the beneficial effects of the device can be referred to the above-mentioned method implementation of each possible network device and the beneficial effects thereof, the implementation of the device can be referred to the implementation of the method, and there will be no duplication. Again.

On the other hand, a terminal device is provided, which has the function of realizing the terminal device behavior in the above method. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible implementation, the terminal device includes: a receiving unit, configured to receive a random access response from the network device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes MAC header and payload, the MAC header includes at least one information sub-header, wherein the information sub-header includes at least one of the following fields: an indication field and a setting field, and the indication field is used to indicate the type of information included in the setting field, The setting field includes at least one kind of information; wherein the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals, and the parameter information of the subsequent signals includes at least one of the following: frequency location information , subcarrier spacing information, waveform information, frame structure information and transmission time information.

In another possible implementation, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein a set of program codes is stored in the memory, and the processor is configured to call a set of program codes stored in the memory. The program code performs the following operations: receiving a random access response from the network device through the receiver, wherein the media access control layer protocol data unit MAC PDU of the random access response includes a MAC header and a payload, The MAC header includes at least one information sub-header, wherein the information sub-header includes at least one of the following fields: an indication field and a setting field. The indication field is used to indicate the type of information included in the setting field. The setting field includes at least A kind of information; wherein, the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals, and the parameter information of the subsequent signals includes at least one of the following: frequency location information, subcarrier spacing information, Waveform information, frame structure information and transmission time information.

Based on the same inventive concept, since the problem-solving principle and beneficial effects of this device can be referred to the above-mentioned method implementations of each possible terminal equipment and the beneficial effects thereof, the implementation of this device can be referred to the implementation of the method, and there will be no duplication. Again.

Another aspect of the present application provides a computer-readable storage medium that stores instructions, which when run on a computer, cause the computer to perform the methods described in the above aspects.

Another aspect of the present application provides a communication chip in which instructions are stored, which when run on a network device or terminal device, causes the computer to execute the methods described in the above aspects.

Another aspect of the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in the above aspects.

Description of drawings

In order to more clearly explain the technical solutions in the embodiments of the present invention or the background technology, the accompanying drawings required to be used in the embodiments or the background technology of the present invention will be described below.

Figure 1 is a schematic diagram of random access and random access response processes;

Figure 2 is a schematic diagram of the format of the media access control protocol data unit of the random access response in LTE;

Figure 3 is a schematic diagram of the relationship between downlink signals, random access resources, and preambles;

Figure 4 is a schematic diagram of a communication system architecture involved in an embodiment of the present invention;

Figure 5 is an interactive flow chart of a random access response provided by an embodiment of the present invention;

Figure 6 is a schematic diagram of the MAC PDU format of a random access response provided by an embodiment of the present invention;

Figure 7 is a schematic diagram of random access resources and random access preamble reception in a multi-beam communication network;

Figure 8 is a schematic interactive flow diagram of another random access response method provided by an embodiment of the present invention;

Figure 9 is a schematic diagram of the MAC PDU format of another random access response provided by an embodiment of the present invention;

Figure 10 is a schematic module diagram of a network device provided by an embodiment of the present invention;

Figure 11 is a schematic module diagram of a terminal device provided by an embodiment of the present invention;

Figure 12 is a schematic module diagram of another network device provided by an embodiment of the present invention;

Figure 13 is a schematic module diagram of another terminal device provided by an embodiment of the present invention;

Figure 14 is a schematic diagram of the hardware architecture of a terminal device/network device provided by an embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

Please refer to FIG. 4 , which is a schematic diagram of a communication system architecture according to an embodiment of the present invention. The communication system includes network equipment and terminal equipment. The communication system may be a global system for mobile communication (GSM), a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, or a global microwave system. Internet access (worldwide interoperability for microwave access, WiMAX) system, LTE system, 5G communication system (such as new radio (NR) system, communication system integrating multiple communication technologies (such as communication integrating LTE technology and NR technology) system), or subsequent evolution of the communication system.

The terminal device in this application is a device with wireless communication functions, which can be a handheld device with wireless communication functions, a vehicle-mounted device, a wearable device, a computing device or other processing equipment connected to a wireless modem, etc. Terminal equipment can be called different names in different networks, such as: user equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user Terminal, terminal, wireless communication equipment, user agent or user device, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital processing (personal digital assistant, PDA), 5G network or terminal equipment in future evolution networks, etc.

The network device in this application is a device deployed in a wireless access network to provide wireless communication functions, including but not limited to: base station (for example: BTS (base transceiver station), Node B (NodeB, NB), evolved Base station B (evolutional node b, eNB or eNodeB), transmission node or transceiver point (TRP or TP) in the NR system, or next-generation node B (generation nodeB, gNB), base station or network equipment in future communication networks ), relay stations, access points, vehicle equipment, wearable devices, wireless-fidelity (Wi-Fi) sites, wireless backhaul nodes, small stations, micro stations, etc.

Taking the network device as a base station as an example, in Figure 4, the base station 102 may include multiple antenna groups. Each antenna group may include one or more antennas. For example, one antenna group may include antennas 104 and 106, another antenna group may include antennas 108 and 110, and additional groups may include antennas 112 and 114. . Different antenna groups in high-frequency communications can be combined into different antenna panels. For example, one of the antenna groups forms a beam pointing in one direction, and the other antenna group forms another beam pointing in another direction. With different device capabilities, more antennas may be needed. Therefore, additional groups can be set with different numbers of antennas according to different device capabilities. By way of example, 2 antennas are shown for each antenna group in Figure 4, however more or fewer antennas may be used for each group. The base station 102 may additionally include a transmitter chain and a receiver chain, and those of ordinary skill in the art will understand that each may include multiple components related to signal transmission and reception, such as processors, modulators, multiplexers, demodulators, etc. converter, demultiplexer or antenna, etc.

Base station 102 may communicate with one or more terminal devices, such as terminal device 116 and terminal device 122. However, it is understood that base station 102 may communicate with any number of terminal devices similar to terminal devices 116 or 122. As shown in FIG. 1 , terminal device 116 communicates with antennas 112 and 114 , which transmit information to terminal device 116 via forward link 118 and receive information from terminal device 116 via reverse link 120 . Additionally, terminal device 122 communicates with antennas 104 and 106 , which transmit information to terminal device 122 via forward link 124 and receive information from terminal device 122 via reverse link 126 . In a frequency division duplex (FDD) system, for example, forward link 118 may utilize a different frequency band than reverse link 120 , and forward link 124 may utilize the same frequency band as reverse link 126 . Different frequency bands used. Furthermore, in a time division duplex (TDD) system, the forward link 118 and the reverse link 120 may use a common frequency band, and the forward link 124 and the reverse link 126 may use a common frequency band.

The area covered by each set of antennas and/or transmission coverage designed for communications is referred to as a sector of base station 102 . For example, the antenna group may be designed to communicate with terminal devices in a sector of the base station 102 coverage area. As base station 102 communicates with terminal devices 116 and 122 over forward links 118 and 124, respectively, the transmit antenna of base station 102 may utilize beamforming to improve the signal-to-noise ratio of forward links 118 and 124. Furthermore, when base station 102 utilizes beamforming to transmit signals to terminal devices 116 and 122 randomly dispersed in the relevant coverage area, compared to a base station transmitting signals to all of its access terminal devices through a single antenna, the Mobile nodes will experience less interference.

At a given time, the base station 102, the terminal device 116, or the terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device may encode the data for transmission. Specifically, the wireless communication sending device can obtain, for example, generate, receive from other communication devices, or save in a memory, etc., a certain number of data bits to be sent to the wireless communication receiving device through the channel. Such data bits may be contained in a transport block or multiple transport blocks of data, which may be segmented to produce multiple code blocks.

In next-generation mobile communication systems such as new radio communication systems (new radio, NR), network equipment uses multiple transmit beams to achieve full coverage of downlink data transmission; similarly, network equipment uses multiple receive beams to achieve uplink data transmission. Full coverage of data transmission, this communication network is called a multi-beam communication network. In a specific example, the uplink/downlink signal may be a synchronization signal block (SS block). One downlink signal corresponds to one transmit beam. Network equipment associates independent random access resources and random access preambles with each downlink signal, and downlink signals may be associated with multiple random access resources. When the network device receives a certain random access preamble on the random access resource associated with a certain downlink signal k, it will send a random access response using the transmit beam corresponding to the downlink signal k. Multiple uplink/downlink signals form an uplink/downlink signal group, or uplink/downlink signal burst (in a specific example, the uplink/downlink signal burst may be SS burst), achieving complete coverage of multiple uplink signals. The /downlink signal group is called an uplink/downlink signal burst set (in a specific example, the uplink/downlink signal burst set may be an SS burst set).

Please refer to Figure 5. Figure 5 is an interactive flow chart of a random access response provided by an embodiment of the present invention. The method may include the following steps:

S101. The network device sends a random access response to the terminal device, where the media access control layer protocol data unit MAC PDU of the random access response includes a k-bit index field of the random access preamble and/or a random access resource. The index field of , where k is a positive integer greater than 6.

The terminal device receives a random access response from the network device.

Before S101, the terminal device sends a request to the network device. The request is used to initiate random access. The request can be called a random access request message, message 1, random access preamble or other customized names, which are not limited here. . The embodiment of the present invention is explained using a random access preamble example. In S101, the response is used to respond to the above request, and may be called a random access response message, message 2, or other customized name, which is not limited here. The embodiment of the present invention is explained using a random access response example.

Generally, the communication protocol stack between network equipment and terminal equipment includes a packet data mapping protocol (PDCP) layer, a radio link control protocol (RLC) layer, a MAC layer and a physical layer protocol (physical layer). protocol, PHY). Here, it mainly involves changes in the content included in the MAC layer.

The MAC PDU of the random access response (also called "Message 2") includes two parts: the MAC header and the payload. Among them, the MAC header is composed of multiple sub-headers, and the length of each sub-header is one byte (8 bits) or multiple bytes. There can be one or more subheaders for information and other subheaders for RAR. The payload contains the specific contents of the RAR. The subheader for RAR in the MAC header corresponds one-to-one to the RAR in the payload. The MAC RAR subheader consists of three fields, namely the extension field, the type field and the k-bit random access preamble index field and/or random access resource index field. Here, k can be equal to 6 or greater than 6. The payload contains at least one of four fields: 1 bit reserved (R), corresponding time advance (timeadvance command), uplink scheduling grant (UL Grant), temporary cell wireless network temporary identification (temporary cell- radio network temporary identifier, Temporary C-RNTI).

In this embodiment, the MAC PDU includes a random access preamble and/or an index field of a random access resource greater than 6 bits, or an index field of a random access resource greater than 6 bits, for example, the number of bits is 7 to 16. Thus, the network device can respond to random access preambles sent by more terminal devices. The random access preamble and/or the index field of the random access resource may be located in the MAC subheader, or may be partially located in the MAC subheader and partially located in the payload, which will be described in detail later.

Generally, one random access preamble can be sent on one random access time and frequency resource, or multiple random access preambles can be sent on one random access time and frequency resource, or multiple random access preambles can be sent on multiple random access time and frequency resources. Preambles, each preamble is located on different random access time-frequency resources. The configuration of random access resources includes time, frequency and random access preamble sequence. The multiple random access resources may be different in time, frequency, or random access preamble sequence, or two of them may be different, or all three may be different. Among them, the random access resource can be understood as one or more random access opportunities (RACH occasion/RACH transmission occasion/RACH opportunity/RACH chance) accessing a random access channel (random access channel, RACH). A random access preamble format may be sent during a random access opportunity.

The network device detects the received signal. If it detects a random access preamble (the random access preamble can be a preamble sequence) or part of the sequence in the preamble (the random access preamble is multiple sequences or a repetition of a sequence) ), a random access response (also called message 2 (MSG2)) corresponding to the preamble sequence is generated. The network device will associate an independent random access resource and/or a random access preamble with each downlink signal. When the network device receives a random access preamble sent on the random access resource associated with a certain downlink signal k, it will The random access response is sent using the transmission beam corresponding to the downlink signal k.

After sending a random access preamble, the terminal device needs to wait for a random access response from the network device. Since the preamble detected by the network device in the same random access time-frequency resource position will be responded to in the same message 2, a random access time-frequency resource position may correspond to all or part of the preamble sequence of a preamble. Or one random access time-frequency resource position corresponds to multiple random access preambles. The terminal device receives the random access response from the network device. The terminal device obtains its own random access response based on the random access preamble index and/or random access resource index. Access response. Specifically, within the time window specified by the downlink control information (DCI) of the network device, the terminal device will use the corresponding random access-radionetwork temporary identifier (RA-RNTI) Monitor the downlink physical control channel. If the DCI identified by the RA-RNTI is received, the terminal device will decode the random access response at the time-frequency position indicated by the physical downlink control channel, that is, receive the random access response.

The following is a detailed description of how to place the index field of the random access preamble and/or the index field of the random access resource in the MAC PDU, as well as the content of other more fields included in the MAC PDU:

In one implementation, the MAC PDU of the random access response includes a MAC header and a payload. The MAC header includes at least one random access response subheader (RAR subheader); the random access preamble index field and/or Or the index field of the random access resource is located in the at least one random access response sub-header. Specifically, in LTE, each MAC subheader is 8 bits. In this implementation, the MAC subheader used for RAR is extended, for example, to n bits, where n is a positive integer greater than 8, for example, n=9-24. Optionally, the MAC header may include other information subheaders (such as the fallback indication subheader in LTE) and the RAR subheader. The MAC header may also not include other information subheaders and only include the RAR subheader. In one implementation, the length of the MAC header is an integer multiple of 8, that is, if the total number of bits of other information subheaders and RAR subheaders in the MAC subheader is not an integer multiple of 8, the MAC header is filled to 8 Integer multiple.

In another implementation, the MAC PDU of the random access response includes a MAC header and a payload. The MAC header includes at least one random access response subheader; the random access preamble index field and/or the random access response subheader; The index field of the access resource includes a first part and a second part, the first part is located in the at least one random access response sub-header, and the second part is located in the payload.

Specifically, the first part may be the random access preamble index field and/or a part of the bits starting from the highest bit or the lowest bit of the index field of the random access resource, and the second part may be the random access preamble index field and/or the The remaining bits of the index field of the random access resource. In other embodiments, the first part may be the random access preamble index field and/or the middle part of the random access resource index field bits, and the second part may be the random access preamble index field and/or the random access preamble index field. The remaining bits of the resource's index field.

Specifically, the random access preamble index field and/or the second part of the bits of the index field of the random access resource are located in the payload (ie, MAC RAR). The random access preamble index field and/or the second part of the index field of the random access resource may be located, for example, in the reserved bit position of the MAC RAR or the UL Grant field. A field may even be added to the MAC RAR specifically for Place the random access preamble index field (RAPID) and/or the second part of the bits of the index field of the random access resource.

Take RAPID as an example. Figure 6 is a schematic diagram of the MAC PDU format of a random access response provided by an embodiment of the present invention. In this structure, the index field of RAPID includes k bits, the first part includes k1 bits, and the second part includes k2 bits, then k=k1+k2. Among them, the k1-bit RAPID is located in the MAC subheader, and the k2-bit RAPID is located in the reserved position of the RAR, for example, k1=4~14, k2=1~16. In addition, other bits in the MAC subheader are optional and can be reserved bits or other indication bits. Their positions can also be after E/T and before RAPID. Other bits in the MAC RAR can be reserved bits or reference signal received power (RSRP), and the relative positions of each field can also be adjusted arbitrarily. Fields E and T each occupy at least one bit.

In yet another implementation manner, the random access preamble includes at least one random access preamble sequence, and the random access preamble index field includes an index field of the at least one random access preamble sequence. Specifically, as shown in Figure 7, a schematic diagram of random access resources and random access preamble reception in a multi-beam communication network, a downlink signal is associated with a corresponding random access resource, and a random access resource corresponds to a random access preamble or preamble. Multiple leader sequences can be included in the format (sequence 1 and sequence 2 are illustrated in the figure). When the network device uses multiple beams to receive the random access preamble, a part of the preamble sequence of a random access preamble may be received in one receiving beam (the figure shows an example of two receiving beams, one receiving beam receiving sequence 1, and the other receiving beam receiving sequence 1. A receive beam receives sequence 2). At this time, when the network device responds to the random access preamble sequence detected in each receiving beam, it needs to include the index field of the random access preamble sequence and/or the time of the preamble sequence in the MAC PDU (for example, the preamble contains N A preamble sequence, numbered 0, 1,...,N-1 in sequence. This time indication is the number n) corresponding to the preamble sequence to reflect the preamble sequence scanned by the network device in more detail. Specifically, the index of a part of the preamble sequence and/or the detection time of the preamble sequence are located in the MAC subheader, and the index of the remaining part of the preamble sequence and/or the detection time of the preamble sequence are located in the RAR. The sequence index located in the MAC RAR can be: located in the reserved bit position of the MAC RAR, in the UL Grant, or even a field can be added to specifically place the remaining bits of the random access preamble sequence index field.

In another embodiment, the two sequences represented in Figure 7 are the same preamble symbol, ie, sequence 2 is a repeat of sequence 1. At this time, the network device responds to the random access preamble sequence detected in each receiving beam, and only needs to include the index field of the random access preamble sequence in the MAC PDU. Specifically, the index of part of the preamble sequence is located in the MAC subheader, and the index of the remaining part of the preamble sequence is located in the MAC RAR. The sequence index located in the MAC RAR can be: located in the reserved bit position of the MAC RAR, in the UL Grant, or even a field can be added to specifically place the remaining bits of the random access preamble sequence index field. In a MAC PDU, there can be multiple MAC subheaders and MAC RARs corresponding to the exact same random access preamble sequence index field.

The MAC PDU generated by the network device side may have multiple identical MAC subheaders, or multiple MAC subheaders and MAC RARs corresponding to the identical random access preamble index, preamble sequence index, resource index, and time index. Take the representation of time index as an example. For example, the preamble contains N preamble sequences, numbered 0, 1,...,N-1 in sequence. This time index is the number n corresponding to the preamble sequence.

When the terminal device detects the MAC PDU, if it detects that the first MAC subheader and the corresponding MAC RAR are the same as the index of the random access preamble and/or resource that has been sent, it needs to continue to detect the next MAC subheader and the corresponding MAC RAR. MACRAR until the MAC subheader and the corresponding MAC RAR are not the same as the index of the random access preamble and/or resource that has been sent or all MAC subheaders and corresponding MAC RARs have been detected. If the terminal device detects that the index corresponding to multiple MAC subheaders and MAC RAR is the same as the index of the random access preamble and/or resource that has been sent, it can randomly select a MAC RAR and send message 3 according to the MAC RAR instruction; it can also target The multiple MAC RARs send multiple messages 3.

In another embodiment, the MAC PDU format of the random access response is related to the configuration in the system information. For example, in the system information, if the random access preamble associated with the downlink signal contains multiple sequences or multiple identical sequences, the format of the present invention will be used (that is, if the random access preamble associated with the downlink signal and/or the total number of resources If the amount is less than 64, the LTE format can be used); for another example, in the system information, if the instruction message 3 uses the first waveform (OFDM), then the first MAC PDU format is used, and the second waveform (such as DFT- s-OFDM), the second MAC PDU format is used. In actual applications, more MAC PDU formats can be selected based on system information.

In yet another implementation, the MAC PDU also includes the time index and/or frequency index of the random access preamble or random access preamble sequence detected by the network device, and the time index and frequency index are located at at least one random access preamble. Access the response subheader or payload. Specifically, as shown in Figure 3, each random access resource corresponds to a time-frequency location, and the preamble index or preamble sequence index corresponding to each random access resource can be the same. The network device receives multiple random access preambles or preamble sequences sent by multiple terminal devices at different time-frequency locations, and responds to the multiple random access preambles or preamble sequences. Since the index of each random access preamble or preamble sequence is the same, the terminal device may not be able to distinguish whether it is a response for itself based on the preamble index or preamble sequence index alone. Therefore, the MAC PDU also needs to include the random access detected by the network device. Time index and/or frequency index of the leader or leader sequence. Therefore, after the terminal device receives the random access response from the network device, the terminal device parses the MAC PDU of the random access response, and sends the random access preamble or the random access preamble according to the terminal device. The time index and/or frequency index of the preamble sequence is used to obtain a random access response for the terminal device.

The field positions of the preamble index or preamble sequence index and the time index and/or frequency index of the random access preamble or preamble sequence detected by the network device may be diverse in the MAC PDU. One way is to place the index of the preamble or preamble sequence in the MAC subheader and place the time index and/or frequency index of the detected preamble or preamble sequence in the MAC RAR. Another way is to place part of the index of the preamble or preamble sequence in the MAC sub-header, place the remaining preamble or index bits of the preamble sequence in the MAC RAR, and the time index and/or frequency index of the detected preamble sequence . The index and time and frequency index of the preamble or preamble sequence placed in MAC RAR can be: placed in the reserved bit position of MAC RAR, UL Grant, or even a field can be added to specifically place the index of the preamble or preamble sequence. and index of time and frequency. In another method, the random access preambles in each random access resource are uniformly numbered. For example, if there are N random access resources and there are K random access preambles in each random access resource, then the random access preambles will be numbered at one time. The NK random access preambles are numbered from 0 to NK-1. When NK is greater than 64, it can respond in any of the above implementations; when NK is less than or equal to 64, it can respond in a similar way to LTE, that is, the MAC subheader contains the random access preamble index.

According to a random access response method provided by an embodiment of the present invention, the index field of the random access preamble and/or the index field of the random access resource that is larger than 6 bits can be included in the MAC PDU, thereby supporting more random access. Input preamble or random access resources, which can reduce the probability of conflict when multiple terminal devices access network equipment.

Figure 8 is a schematic interactive flow diagram of another random access response method provided by an embodiment of the present invention. The method may include the following steps:

S201. The network device sends a random access response to the terminal device, where the media access control layer protocol data unit MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one information subheader, where , the information subheader includes at least one of the following fields: an indication field and a setting field. The indication field is used to indicate the type of information included in the setting field, and the setting field includes at least one kind of information;

Wherein, the at least one kind of information includes: channel state information reference signal configuration information and parameter information of subsequent signals. The parameter information of the subsequent signals includes at least one of the following: frequency location information, subcarrier spacing information, waveform information, frame Structure information and sending time information.

The terminal device receives a random access response from the network device.

Specifically, Figure 9 is a schematic diagram of another MAC PDU format of a random access response provided by an embodiment of the present invention, wherein in the MAC PDU, the MAC header includes one or more random access preamble indexes or In addition to the random access resource index subheader (the figure illustrates the random access preamble index subheader 1 to the random access preamble index subheader n), it also includes one or more information subheaders (the figure illustrates the inclusion of information Subheader 1 to information subheader k).

Each information sub-header may include at least one of the following fields: an indication field, a reserved field, and a setting field. For example, the length of the indication field and the setting field is neither less than 1 bit, the reserved field is optional, and the positions of the three fields can be interchanged at will. The indication field is used to indicate the type of information included in the setting field of this information sub-header, and the setting field includes at least one kind of information. For example, the information subheader is used for backoff indicator (BI). One or more bits in the indication field indicate that the subheader is used for backoff information, and the bits in the configuration field are used to indicate the backoff configuration ( The backoff indication is used to indicate the load of the cell. The more the load, the greater the backoff value corresponding to the backoff indication, which is conducive to reducing random access conflicts. The backoff value is based on the random access resource time period); for another example , the information sub-header is used to indicate channel state information-reference signal (CSI-RS) configuration information. There are one or more bits in the indication field indicating that the sub-header is used to configure CSI-RS. Configuration field The bits in are used to indicate the configuration of CSI-RS (used for beam management in the random access process to obtain higher gain beams, which is beneficial to improving communication efficiency). For another example, the information subheader is used to indicate parameter information of subsequent signals, such as frequency location information, subcarrier spacing information, waveform information, frame structure information, and transmission time information of subsequent signal transmissions. The time here can refer to subframes and time slots. time slot, mini-slot, OFDM (orthogonal frequency division multiplexing) symbol, the subsequent signal here refers to the signal after message 2, such as message 3, message 4, and/or subsequent data At least one signal in the communication (in NR, there may be multiple frequencies/subbands, each with different subcarrier spacing, waveforms, frame structures. If subsequent signals are scheduled to be connected to message 1/random This additional information is needed if the input preamble is not the same frequency/subband). For example, there are multiple bits in the subcarrier spacing indication field to indicate that the subheader is used to configure the subcarrier spacing, and the bits in the configuration field are used to indicate the subcarrier spacing; for another example, the information subheader is used to indicate frame structure information, indicating There are multiple bits in the field indicating that the sub-header is used to configure the frame structure, and the bits in the configuration field are used to indicate the frame structure configuration; for another example, the information sub-header is used to indicate waveform information, and there are multiple bits in the indication field indicating that the The subheader is used to configure the waveform. The bits in the configuration field are used to indicate that the waveform used for subsequent signal transmission is OFDM or Discrete Fourier Transform spread OFDM (DFT-s-OFDM). ; For another example, the information sub-header is used to indicate time information, there are multiple bits in the indication field indicating that the sub-header is used to configure the sending time, and the bits in the configuration field are used to indicate the sending time.

In addition, an information sub-header can also indicate the configuration of multiple types of information. For example, in the information subheader E/T/R/R/BI used to indicate fallback, two fields (R) are used to indicate that the field is used for CSI-RS, subcarrier spacing, frame structure information, etc. For example, the format of a certain information subheader is E/T/XX, where T is 2 to 3 bits, used to indicate the type of the field, and XX indicates the specific field content, which can be multiple parameters. Configuration value. For example, the format of a certain information subheader is E/T/T2/XX, where T is one bit and T2 is 0 to 3 bits. T and T2 are used together to indicate the type of the information subheader, and XX indicates the specific Information sub-header content, this field content can set the configuration values of multiple parameters. Optionally, the number of bits of T2 is determined according to the set value of T. For example, when T is 1, T2 is 0 bits, and when T is 0, T2 is 1 to 3 bits. For another example, in the information subheader E/T/R/R/BI used to indicate fallback, the first R is used to indicate that the field is used for CSI-RS, subcarrier spacing, frame structure information, etc., and The second R is used to indicate the length of the subheader. That is, the format of a certain information sub-header is E/T/L/XX, where T is 2 to 3 bits, used to indicate the type of the information sub-header; L is at least one bit, used to indicate the information The length of the subheader; XX indicates the specific information subheader content. In additional embodiments, each of the above examples may be combined.

It should be noted that in all implementations, the information subheader is optional, that is, there is an information subheader in the MAC PDU corresponding to some RARs, but there may be no information subheader in the MAC PDU corresponding to other RARs. head.

According to a random access response method provided by an embodiment of the present invention, the MAC subheader can indicate more information.

The method of the embodiment of the present invention is described in detail above, and the device of the embodiment of the present invention is provided below.

FIG. 10 is a schematic module diagram of a network device provided by an embodiment of the present invention, which can be applied to the communication system shown in FIG. 4 . The network device 1000 may include: a sending unit 11. The sending unit 11 is configured to send a random access response, for example, perform the above-mentioned part of S101. For details, please refer to the description in the method embodiments, which will not be described again here.

According to a network device provided by an embodiment of the present invention, the MAC PDU can include an index field of a random access preamble and/or an index field of a random access resource larger than 6 bits, thereby supporting more random access preambles or Random access resources can reduce the probability of conflict when multiple terminal devices access network equipment.

FIG. 11 is a schematic module diagram of a terminal device provided by an embodiment of the present invention, which can be applied to the communication system shown in FIG. 4 . The terminal device 2000 may include: a receiving unit 21. The receiving unit 21 is configured to receive a random access response, for example, perform the above-mentioned part of S101. For details, please refer to the description in the method embodiments, which will not be described again here.

According to a terminal device provided by an embodiment of the present invention, the MAC PDU can include an index field of a random access preamble and/or an index field of a random access resource larger than 6 bits, thereby supporting more random access preambles or Random access resources can reduce the probability of conflict when multiple terminal devices access network equipment.

FIG. 12 is a schematic module diagram of another network device provided by an embodiment of the present invention, which can be applied to the communication system shown in FIG. 4 . The network device 3000 may include: a sending unit 31. The sending unit 31 is used to send a random access response, for example, to execute the above-mentioned part of S201. For details, please refer to the description in the method embodiments, which will not be described again here.

According to a network device provided by an embodiment of the present invention, more information can be indicated in the MAC subheader.

FIG. 13 is a schematic module diagram of another terminal device provided by an embodiment of the present invention, which can be applied to the communication system shown in FIG. 4 . The terminal device 4000 may include: a receiving unit 41. The receiving unit 41 is configured to receive a random access response, for example, perform the above-mentioned part of S401. For details, please refer to the description in the method embodiments, which will not be described again here.

According to a terminal device provided by an embodiment of the present invention, more information can be indicated in the MAC sub-header.

An embodiment of the present invention also provides another network device. The network device may be a network device in the above communication system. The network device may adopt the hardware architecture shown in Figure 14. The network device may include a receiver, transmitter, memory, and processor that are interconnected by a bus. The relevant functions implemented by the sending unit 11 in Figure 10 can be implemented by a transmitter.

Memory includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable readonly memory (EPROM), or portable Read memory (compact disc read-only memory, CD-ROM), which is used for related instructions and data.

The receiver is used to receive data and/or signals, and the transmitter is used to send data and/or signals. The transmitter and receiver can be separate devices or an integral device, such as a transceiver.

The processor may include one or more processors, such as one or more central processing units (CPUs). In the case where the processor is a CPU, the CPU may be a single-core CPU or a multi-core CPU. CPU.

Memory is used to store program code and data for network devices and can be a separate device or integrated into the processor.

Each of the above devices can be integrated and implemented in a chip, for example, integrated in a baseband chip.

Specifically, the processor is used to control the transmitter to send a random access response to the terminal device, for example, perform the above-mentioned part of S201. For details, please refer to the description in the method embodiments, which will not be described again here.

It can be understood that Figure 14 only shows a simplified design of the network device. In practical applications, network devices may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network devices that can implement embodiments of the present invention are included in the present invention. within the scope of protection.

According to a network device provided by an embodiment of the present invention, the MAC PDU can include an index field of a random access preamble and/or an index field of a random access resource larger than 6 bits, thereby supporting more random access preambles or Random access resources can reduce the probability of conflict when multiple terminal devices access network equipment.

An embodiment of the present invention also provides another terminal device. The terminal device may be a terminal device in the above communication system. The terminal device may adopt the hardware architecture shown in Figure 14. The terminal device may include a receiver, a transmitter, a memory and a processor, which are connected to each other via a bus. The related functions implemented by the receiving unit 21 in Figure 11 can be implemented by a receiver.

Memory includes but is not limited to RAM, ROM, EPROM, and CD-ROM. The memory is used for related instructions and data.

The receiver is used to receive data and/or signals, and the transmitter is used to send data and/or signals. The transmitter and receiver can be separate devices or an integral device, such as a transceiver.

The processor may include one or more processors, such as one or more CPUs. When the processor is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The memory is used to store program codes and data of the terminal device, and can be a separate device or integrated in the processor.

Each of the above devices can be integrated and implemented in a chip, for example, integrated in a baseband chip.

Specifically, the processor is configured to control the receiver to receive a random access response from the network device, for example, perform the above-mentioned part of S101. For details, please refer to the description in the method embodiments, which will not be described again here.

It can be understood that FIG. 14 only shows a simplified design of the terminal device. In practical applications, the terminal equipment can also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal equipment that can implement the present invention are protected by the present invention. within the range.

According to a terminal device provided by an embodiment of the present invention, the MAC PDU can include an index field of a random access preamble and/or an index field of a random access resource larger than 6 bits, thereby supporting more random access preambles or Random access resources can reduce the probability of conflict when multiple terminal devices access network equipment.

An embodiment of the present invention also provides another network device. The network device may be a network device in the above communication system. The network device may adopt the hardware architecture shown in Figure 14. The network device may include a receiver, transmitter, memory, and processor that are interconnected by a bus. The related functions implemented by the sending unit 31 in Figure 12 can be implemented by a transmitter.

Memory includes but is not limited to RAM, ROM, EPROM, and CD-ROM. The memory is used for related instructions and data.

The receiver is used to receive data and/or signals, and the transmitter is used to send data and/or signals. The transmitter and receiver can be separate devices or an integral device, such as a transceiver.

The processor may include one or more processors, such as one or more CPUs. When the processor is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

Memory is used to store program code and data for network devices and can be a separate device or integrated into the processor.

Each of the above devices can be integrated and implemented in a chip, for example, integrated in a baseband chip.

Specifically, the processor is used to control the transmitter to send a random access response to the terminal device, for example, perform the above-mentioned part of S201. For details, please refer to the description in the method embodiments, which will not be described again here.

It can be understood that Figure 14 only shows a simplified design of the network device. In practical applications, network equipment can also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network equipment that can implement the present invention are protected by the present invention. within the range.

According to a network device provided by an embodiment of the present invention, more information can be indicated in the MAC subheader.

An embodiment of the present invention also provides another terminal device. The terminal device may be a terminal device in the above communication system. The terminal device may adopt the hardware architecture shown in Figure 14. The terminal device may include a receiver, a transmitter, a memory and a processor, which are connected to each other via a bus. The related functions implemented by the receiving unit 41 in Figure 13 can be implemented by a receiver.

Memory includes but is not limited to RAM, ROM, EPROM, and CD-ROM. The memory is used for related instructions and data.

The receiver is used to receive data and/or signals, and the transmitter is used to send data and/or signals. The transmitter and receiver can be separate devices or an integral device, such as a transceiver.

The processor may include one or more processors, such as one or more CPUs. When the processor is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The memory is used to store program codes and data of the terminal device, and can be a separate device or integrated in the processor.

Each of the above devices can be integrated and implemented in a chip, for example, integrated in a baseband chip.

Specifically, the processor is configured to control the receiver to receive a random access response from the network device, for example, perform the above-mentioned part of S201. For details, please refer to the description in the method embodiments, which will not be described again here.

It can be understood that FIG. 14 only shows a simplified design of the terminal device. In practical applications, the terminal equipment can also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal equipment that can implement the present invention are protected by the present invention. within the range.

According to a terminal device provided by an embodiment of the present invention, more information can be indicated in the MAC sub-header.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can 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. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server or data center to another through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. A website site, computer, server or data center for transmission. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, digital versatile discs (DVD)), or semiconductor media (eg, solid state disks (SSD)) wait.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments are implemented. This process can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, , may include the processes of the above method embodiments. The aforementioned storage media include: ROM or RAM, magnetic disks, optical disks and other media that can store program codes.

Claims (15)

1. A random access response method, characterized by including: The network device sends a random access response to the terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes an index field of the k-bit random access preamble and/or an index of the random access resource. Field, where k is a positive integer greater than 6; The MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one random access Enter the response subheader; The random access preamble index field and/or the index field of the random access resource is located in the at least one random access response sub-header; or The index field of the random access preamble is located in the at least one random access response sub-header and the payload; or The index field of the random access resource is located in the at least one random access response sub-header and the payload; or The index field of the random access preamble and the index field of the random access resource are located in the at least one random access response sub-header and the payload. 2. The method of claim 1, wherein the random access preamble includes at least one random access preamble sequence, and the random access preamble index field includes an index field of the at least one random access preamble sequence. 3. The method according to any one of claims 1 to 2, wherein the MAC PDU further includes the time index and/or frequency of the random access preamble or random access preamble sequence detected by the network device. Index, wherein the time index is located in at least one random access response sub-header and/or payload, and the frequency index is located in at least one random access response sub-header and/or payload. 4. A random access response method, characterized by including: The terminal device receives a random access response from the network device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes an index field of the k-bit random access preamble and/or an index field of the random access resource. Index field, where k is a positive integer greater than 6; The MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one random Access response sub-header; The random access preamble index field and/or the index field of the random access resource is located in the at least one random access response sub-header; or The index field of the random access preamble is located in the at least one random access response sub-header and the payload; or The index field of the random access resource is located in the at least one random access response sub-header and the payload; or The index field of the random access preamble and the index field of the random access resource are located in the at least one random access response sub-header and the payload. 5. The method of claim 4, wherein the random access preamble includes at least one random access preamble sequence, and the random access preamble index field includes an index of the at least one random access preamble sequence. field. 6. The method of claim 4 or 5, wherein the MAC PDU further includes a time index and/or frequency index of a random access preamble or a random access preamble sequence detected by the network device, wherein , the time index is located in at least one random access response sub-header or payload, and the frequency index is located in at least one random access response sub-header or payload; After the terminal device receives the random access response from the network device, it also includes: The terminal device parses the MAC PDU of the random access response, and obtains the information for the terminal device according to the time index and/or frequency index of the random access preamble or the random access preamble sequence sent by the terminal device. random access response. 7. A network device, characterized by including: A sending unit configured to send a random access response to the terminal device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes an index field of the k-bit random access preamble and/or a random access preamble. The index field of the resource, where k is a positive integer greater than 6; The MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one random Access response sub-header; The random access preamble index field and/or the index field of the random access resource is located in the at least one random access response sub-header; or The index field of the random access preamble is located in the at least one random access response sub-header and the payload; or The index field of the random access resource is located in the at least one random access response sub-header and the payload; or The index field of the random access preamble and the index field of the random access resource are located in the at least one random access response sub-header and the payload. 8. The network device according to claim 7, wherein the random access preamble includes at least one random access preamble sequence, and the random access preamble index field includes an index field of the at least one random access preamble sequence. . 9. The network device according to claim 7 or 8, wherein the MAC PDU further includes a time index and/or frequency index when the network device detects a random access preamble or a random access preamble sequence, wherein , the time index is located in at least one random access response sub-header or payload, and the frequency index is located in at least one random access response sub-header or payload. 10. A terminal device, characterized in that it includes: A receiving unit configured to receive a random access response from a network device, wherein the media access control layer protocol data unit MAC PDU of the random access response includes an index field of a k-bit random access preamble and/or a random access response. Enter the index field of the resource, where k is a positive integer greater than 6; The MAC PDU of the random access response includes a MAC header and a payload, and the MAC header includes at least one random Access response sub-header; The random access preamble index field and/or the index field of the random access resource is located in the at least one random access response sub-header; or The index field of the random access preamble is located in the at least one random access response sub-header and the payload; or The index field of the random access resource is located in the at least one random access response sub-header and the payload; or The index field of the random access preamble and the index field of the random access resource are located in the at least one random access response sub-header and the payload. 11. The terminal device according to claim 10, wherein the random access preamble includes at least one random access preamble sequence, and the random access preamble index field includes the at least one random access preamble sequence. Index field. 12. The terminal device according to claim 10 or 11, wherein the MAC PDU further includes the network device The time index and/or frequency index of the random access preamble or random access preamble sequence is detected, wherein the time index is located in at least one random access response sub-header or payload, and the frequency index is located in at least one random access response sub-header or payload. In the response subheader or payload; The receiving unit is specifically configured to parse the MAC PDU of the random access response, and obtain the time index and/or frequency index of the random access preamble or the random access preamble sequence sent by the terminal device. The random access response of the terminal device. 13. A computer-readable storage medium comprising instructions, characterized in that, when run on a computer, the method of any one of claims 1 to 6 is executed. 14. A communication chip, characterized by comprising: a processor for executing computer programs or instructions in a memory to implement the method according to any one of claims 1 to 3. 15. A communication chip, characterized by comprising: a processor for executing computer programs or instructions in a memory to implement the method according to any one of claims 4 to 6.