Communication connection establishment method and apparatus, device and storage medium

Abstract

A communication connection establishment method and apparatus, a device and a storage medium, relating to the technical field of communications. The method comprises: establishing a communication connection with a first apparatus group by means of a random access process, the first apparatus group comprising at least one wireless access apparatus (310). The technical solution provided in embodiments of the present application provides a scheme for establishing a communication connection between a terminal device and an apparatus group, wherein the terminal device can establish a communication connection with one apparatus group among a plurality of apparatus groups by means of a random access process. The terminal device does not need to be served by all wireless access apparatuses at the same time, thereby reducing signaling overhead and calculation complexity. The terminal device is only in communication connection with one apparatus group, so that good network expansibility can be realized.

Description

Method, device, equipment and storage medium for establishing communication connection Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a method, apparatus, device, and storage medium for establishing a communication connection. Background Art

[0002] There are a large number of wireless access devices in the decellularized wireless access network, which may also be referred to as APs (Access Points). Terminal devices can establish communication connections with the wireless access devices to transmit information.

[0003] However, how to establish a communication connection between the terminal equipment and the wireless access device requires further discussion and research.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a method, apparatus, device, and storage medium for establishing a communication connection. The technical solution is as follows:

[0006] According to one aspect of an embodiment of the present application, a method for establishing a communication connection is provided, the method being executed by a terminal device, the method comprising:

[0007] A communication connection is established with a first device group through a random access process, where the first device group includes at least one wireless access device.

[0008] According to one aspect of an embodiment of the present application, a method for establishing a communication connection is provided. The method is performed by a first wireless access device in a first device group, and the method includes:

[0009] A communication connection is established with a terminal device through a random access process, the first device group includes at least one wireless access device, and the first wireless access device is any one of the wireless access devices in the first device group.

[0010] According to one aspect of an embodiment of the present application, a device for establishing a communication connection is provided, the device comprising:

[0011] The processing module is configured to establish a communication connection with a first device group through a random access process, where the first device group includes at least one wireless access device.

[0012] According to one aspect of an embodiment of the present application, a device for establishing a communication connection is provided, which is applied to a first wireless access device in a first device group, the device including:

[0013] The processing module is configured to establish a communication connection with a terminal device through a random access process, wherein the first device group includes at least one wireless access device, and the first wireless access device is any one of the wireless access devices in the first device group.

[0014] According to one aspect of an embodiment of the present application, a communication device is provided, comprising a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-mentioned method for establishing a communication connection. Exemplarily, the communication device is a terminal device or a wireless access device.

[0015] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement the above-mentioned method for establishing a communication connection.

[0016] According to one aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the above-mentioned method for establishing a communication connection.

[0017] According to one aspect of an embodiment of the present application, a computer program product is provided, which includes a computer program stored in a computer-readable storage medium, and a processor reads and executes the computer program from the computer-readable storage medium to implement the above-mentioned method for establishing a communication connection.

[0018] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0019] A solution for establishing communication connections between terminal devices and device groups is provided. A terminal device can establish a communication connection with one of multiple device groups through a random access process. This eliminates the need for the terminal device to be served by all wireless access devices simultaneously, reducing signaling overhead and computational complexity. By connecting the terminal device to only one device group, network scalability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0021] FIG2 is a schematic diagram of a decellularized wireless access network provided by one embodiment of the present application;

[0022] FIG3 is a flowchart of a method for establishing a communication connection provided by an embodiment of the present application;

[0023] FIG4 is a schematic diagram of a device group for a decellularized wireless access network according to an embodiment of the present application;

[0024] FIG5 is a schematic diagram of a device group in an NTN network provided by an embodiment of the present application;

[0025] FIG6 is a schematic diagram of sending resources of first information provided by an embodiment of the present application;

[0026] FIG7 is a schematic diagram of an initial downlink BWP provided by an embodiment of the present application;

[0027] FIG8 is a flowchart of a method for establishing a communication connection provided by another embodiment of the present application;

[0028] FIG9 is a flowchart of a method for establishing a communication connection provided by another embodiment of the present application;

[0029] FIG10 is a block diagram of an apparatus for establishing a communication connection provided by one embodiment of the present application;

[0030] FIG11 is a block diagram of an apparatus for establishing a communication connection provided by another embodiment of the present application;

[0031] FIG12 is a schematic structural diagram of a communication device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0033] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person skilled in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0034] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0035] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0036] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0037] The communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0038] The embodiments of the present application can be applied to non-terrestrial networks (NTN) systems, and can also be applied to terrestrial networks (TN) systems.

[0039] Please refer to Figure 1, which shows a schematic diagram of a network architecture provided by an embodiment of the present application. The network architecture may include: a terminal device 10, an access network device 20, and a core network element 30.

[0040] The terminal device 10 may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5GS (5th Generation System) or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each access network device 20. In the embodiments of the present application, “terminal device” and “UE” are often used interchangeably, but those skilled in the art can understand their meanings.

[0041] Access network equipment 20 is a device deployed in an access network to provide wireless communication capabilities for terminal devices 10. Access network equipment 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different wireless access technologies, the names of devices that provide access network equipment functions may vary. For example, in 5G NR systems, they are referred to as gNodeBs or gNBs. As communication technologies evolve, the term "access network equipment" may change. For ease of description, in the embodiments of this application, the aforementioned devices that provide wireless communication capabilities for terminal devices 10 are collectively referred to as access network equipment. In some embodiments, access network equipment 20 enables communication between terminal devices 10 and core network elements 30. For example, in an LTE (Long Term Evolution) system, access network equipment 20 may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or one or more eNodeBs within the EUTRAN. In a 5G NR system, access network equipment 20 may be a Radio Access Network (RAN) or one or more gNBs within the RAN.

[0042] The core network element 30 is a network element deployed in the core network. The function of the core network element 30 is mainly to provide user connection, user management, and service bearer, and to provide an interface to the external network as a bearer network. For example, the core network elements in the 5G NR system may include network elements such as AMF (Access and Mobility Management Function), UPF (User Plane Function), and SMF (Session Management Function). In addition, the core network element can be regarded as a functional entity, and one or more core network elements can be deployed on a physical device.

[0043] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via an air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via an air interface technology, such as the Uu interface.

[0044] The "5G NR system" in the embodiments of this application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in the embodiments of this application can be applied to LTE systems, 5G NR systems, subsequent evolution systems of 5G NR systems, and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems, and this application does not limit this.

[0045] In an embodiment of the present application, the access network device can provide services for the cell, and the terminal device communicates with the access network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be a cell corresponding to the access network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0046] With the evolution of technology, the concept of cell-free radio access network (cell-free RAN) has been proposed. As shown in Figure 2, a cell-free radio access network can refer to a network composed of a large number of distributed low-cost and low-power APs. The APs can perform simple physical layer functions such as wireless signal transmission and reception, channel estimation, downlink precoding, and uplink signal detection. In addition, all APs are connected to one or more CPUs (Central Processing Units) through a backhaul link, where the CPUs can perform complex physical layer functions such as data distribution and merging for APs, signal modulation and demodulation, and information bit encoding and decoding, so that all APs can jointly provide services to each user at the same time. As the number of APs increases, the influence of cell boundaries can be eliminated, forming the concept of a "cell-free" system, which significantly improves system capacity and spectrum efficiency.

[0047] Given the limitations of signaling overhead and computational complexity, it's unrealistic for every terminal device to be served by all APs simultaneously. By limiting terminal devices to a subset of APs with better channel conditions, for example, by associating only with nearby APs, better network scalability can be achieved. Establishing associations between terminal devices and APs is a pressing issue.

[0048] Please refer to Figure 3, which shows a flow chart of a method for establishing a communication connection provided by an embodiment of the present application, which can be applied to the network architecture shown in Figure 1. The method includes the following step 310.

[0049] In step 310 , the terminal device establishes a communication connection with a first device group through a random access process, where the first device group includes at least one wireless access device.

[0050] Accordingly, the first wireless access device in the first device group establishes a communication connection with the terminal equipment through a random access process.

[0051] A wireless access device is a device or apparatus that has simple physical layer functions. For example, a wireless access device has at least one of the following physical layer functions: wireless signal transmission and reception, channel estimation, downlink precoding, and uplink signal detection.

[0052] In some embodiments, the wireless access device may be an access network device (or base station) or a network node in an access network device, which is not limited in this application. Exemplarily, the wireless access device is an access network device, and the first device group is an access network device group consisting of at least one access network device, or may also be referred to as an access network device group. Exemplarily, the wireless access device is a network node in a network device, and the first device group is a network node group consisting of at least one network node. A network node refers to a functional module that can send, receive, or forward information through a communication channel.

[0053] In some embodiments, when the wireless access device is a network node, the wireless access device in a device group can be a network node under one network device or a plurality of network devices, wherein the plurality of network devices have communication connections.

[0054] In some embodiments, the wireless access device may be deployed in a terrestrial communication network or in an NTN (Non-Terrestrial Network).

[0055] In some embodiments, the wireless access device may be referred to as an AP, or may be referred to as another name, which is not limited in this application. The AP may access the network through wireless access.

[0056] In some embodiments, the method is applied to a decellularized wireless access network, in which one device group is allowed to include multiple wireless access devices, that is, the device group may include one wireless access device or multiple wireless access devices. However, this does not mean that each device group must include multiple wireless access devices. The terminal device selects a first device group from multiple device groups and establishes a communication connection with the first device group. For example, as shown in Figure 4, the decellularized wireless access network includes two AP groups, each of which is connected to the same CPU. One AP group corresponds to one device group, and one AP corresponds to one wireless access device.

[0057] In some embodiments, the method is applied to an NTN network, where one or more satellites (a plurality of satellites is referred to as a satellite cluster, or also referred to as an AP group) constitute a device group. A terminal device selects a first device group from among the plurality of device groups and establishes a communication connection with the first device group. For example, as shown in FIG5 , the NTN network includes three AP groups (or satellite clusters, or satellite groups), where one AP group corresponds to one device group, and one AP (or satellite) corresponds to one wireless access device.

[0058] In some embodiments, each wireless access device included in the plurality of device groups is connected to the same processing unit or to different interconnected processing units. A processing unit is a network device that performs complex physical layer functions. The complex physical layer functions include at least one of the following: data distribution and merging for the wireless access devices, signal modulation and demodulation, and information bit encoding and decoding.

[0059] Exemplarily, each wireless access device included in the plurality of device groups is connected to the same processing unit.

[0060] Exemplarily, each wireless access device included in the plurality of device groups is connected to a different processing unit, respectively, wherein each processing unit is connected to each other.

[0061] In some embodiments, the above-mentioned interconnection may refer to communication through a wired connection or communication through a wireless connection, which is not limited in this application.

[0062] In some embodiments, the method may also be applied to a distributed network consisting of multiple wireless access devices.

[0063] In some embodiments, device groups can be divided based on the physical location of the wireless access device, such that wireless access devices within the same physical area are grouped together. This application does not limit the method for dividing physical areas; for example, the division can be based on administrative regions or the capabilities of the wireless access device. The capabilities of a wireless access device refer to the signal transmission and reception capabilities of the wireless access device.

[0064] The random access process refers to the process of establishing a wireless link communication between a terminal device and a network device.

[0065] In some embodiments, the terminal device establishing a communication connection with the first device group may be establishing a communication connection with all wireless access devices included in the first device group, or may be establishing a communication connection between the terminal device and the first wireless access device in the first device group, which is not limited in this application. The first wireless access device may be any wireless access device in the first device group, or may be a master wireless access device in the first device group, which is not limited in this application.

[0066] In some embodiments, the master wireless access device may be preset, for example, may be set by the network or may be predefined.

[0067] In some embodiments, the master wireless access device may be determined by voting among the wireless access devices in the device group.

[0068] In some embodiments, before step 310 , the method further includes steps 320 and 330 .

[0069] Step 320: Receive first information respectively sent by multiple device groups, where different device groups use different resources to send the first information.

[0070] Step 330: Determine a first device group from the plurality of device groups.

[0071] The first information may be any information sent by the device group, and the first information is used to indicate the existence of the device group that sends the first information.

[0072] When a terminal device receives first information from a device group, it can detect the existence of that device group. For example, if a terminal device receives first information from three device groups, it can detect the existence of all three groups. Subsequently, the terminal device can select one of these three groups as the first group.

[0073] In some embodiments, the first information includes SSB (Synchronization Signal / PBCH Block, synchronization signal and physical broadcast channel block).

[0074] In some embodiments, the first information is sent by a master wireless access device in the device group.

[0075] In some embodiments, all wireless access devices in the device group send the first information.

[0076] In some embodiments, if there is no master wireless access device in the device group, the first information may be sent by any wireless access device in the device group, or by all or part of the wireless access devices in the device group.

[0077] In some embodiments, different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

[0078] Different means that two resources are not exactly the same. For example, two different time domain resources mean that they do not completely overlap. In other words, partial overlap and complete non-overlap are both considered different time domain resources. The same applies to frequency domain resources and code domain resources.

[0079] The situation where two resources are completely different, or the situation where two resources do not overlap at all, can also be called that the two resources are orthogonal. The resources mentioned above can be any of time domain resources, frequency domain resources, and code domain resources.

[0080] In some embodiments, different device groups use different frequency domain resources to transmit the first information, so that a terminal device can distinguish between different device groups based on the frequency domain location of the first information. For example, as shown in FIG6 , AP group #1 and AP group #2 transmit the first information on different frequency domain resources. For example, AP group #1 and AP group #2 transmit SSBs on RB#20-39 and RB#50-69, respectively. The terminal device can simultaneously receive the SSBs of both AP groups and distinguish the two AP groups based on their frequency domain locations.

[0081] In some embodiments, different device groups use different time domain resources to transmit first information, so that a terminal device can distinguish different device groups based on the time domain location of the first information. For example, as shown in FIG6 , AP group #1 and AP group #3 transmit first information on different time domain resources. For example, AP group #1 and AP group #3 transmit SSBs on symbols #2-5 and symbols #8-11 of time slot #0, respectively. The terminal device can then receive the SSBs of the two AP groups at the same frequency domain location and distinguish the two AP groups at different times.

[0082] In some embodiments, different device groups use different code domain resources to send the synchronization signal in the first information, so that after the terminal device detects the synchronization signal, it can distinguish different device groups based on the codeword of the synchronization signal. For example, the synchronization signal in the first information is sent using a pseudo-random sequence, such as an m-sequence with good autocorrelation and cross-correlation characteristics, and the pseudo-random sequences used by different device groups have different sequence indexes. In this case, even if different device groups send the first information on the same time-frequency resource, the terminal device can still distinguish different device groups based on the detection result after the synchronization signal detection. The detection result is the sequence index of the pseudo-random sequence corresponding to each device group.

[0083] It should be noted that the first information sent by different device groups needs to be different in at least one dimension of the time domain, frequency domain, and code domain. For example, as shown in Figure 6, the resources occupied by AP group #4 to send the first information (or SSB synchronization signal) are orthogonal to the resources occupied by AP group #5 to send the SSB synchronization signal in the code domain, orthogonal to the resources occupied by AP group #2 to send the first information in the time domain, orthogonal to the resources occupied by AP group #3 to send the first information in the frequency domain, and orthogonal to the resources occupied by AP group #1 to send the first information in both the time and frequency domains. The above method provides sufficient flexibility for each device group to send the first information.

[0084] In some embodiments, the first information includes at least one of the following:

[0085] identification information of the device group that sends the first information;

[0086] the location of the time-frequency resource used for sending the first information;

[0087] Transmission configuration information of a PDCCH (Physical Downlink Control Channel) to be sent by the device group sending the first information, where the PDCCH is used to schedule transmission of a PDSCH (Physical Downlink Shared Channel);

[0088] The location of the frequency domain resources occupied by the initial downlink BWP (Bandwidth Part);

[0089] The size of the frequency domain resources occupied by the initial downlink BWP.

[0090] The identification information of the device group refers to information that uniquely identifies the device group, such as an index of the device group.

[0091] In some embodiments, the identification information of the device group includes at least one of the following: an index of the device group, and an index of a master wireless access device in the device group.

[0092] The device group index uniquely identifies the device group, with different indexes for different device groups. The index of the primary wireless access device in a device group uniquely identifies it, with different primary wireless access devices in different device groups having different sequence indices. In some cases, the primary wireless access device for a device group is fixed, so the primary wireless access device index can also be used to uniquely identify the device group.

[0093] In some embodiments, a device group includes multiple wireless access devices, wherein the multiple wireless access devices are composed of a primary wireless access device and one or more secondary wireless access devices. The primary wireless access device can be a more powerful wireless access device among the multiple wireless access devices.

[0094] In some embodiments, if a device group includes only one wireless access device, the wireless access device is the master wireless access device of the device group.

[0095] In some embodiments, the identification information of the device group may be carried by information bits in the first information, or may be carried by a sequence index of a synchronization signal in the first information, which is not limited in this application.

[0096] The information bit refers to the bit used to carry information, and the sequence index refers to the sequence index of the pseudo-random sequence of the synchronization signal. Each pseudo-random sequence has its own number, which we call the sequence index.

[0097] In some embodiments, carrying through information bits means that the information bits include the first information.

[0098] In some embodiments, the terminal device may determine the first information based on a sequence index of the synchronization signal. In some embodiments, the sequence index of the synchronization signal is the first information.

[0099] In some embodiments, the first information can be used to indicate the location of the time-frequency resources occupied by sending the first information, so that the terminal device can determine the location of the time-frequency resources occupied by the currently received first information.

[0100] In some embodiments, the first information may indicate the location of the frequency domain resources occupied by the first information by indicating a frequency domain offset value of the frequency domain resources occupied by the first information relative to the frequency domain resources occupied by the initial downlink BWP. For example, the information bits in the first information indicate the frequency offset value of the current first information relative to the initial downlink BWP. For example, if AP group #0 and AP group #1 transmit the first information on RB#0-19 and RB#50-69, respectively, the frequency offset values ​​are 0 and 50 RBs (Resource Blocks), respectively.

[0101] In some embodiments, the first information may indicate the location of the time domain resources occupied by the first information by indicating an offset value of the time domain resources occupied by the first information relative to a frame boundary. For example, the information bits in the first information indicate the offset value of the current first information relative to a frame boundary. For example, if AP group #0 and AP group #1 transmit the first information on symbols #2-5 and symbols #8-11 of time slot #0, respectively, the offset values ​​relative to the frame boundary are 2 and 8 symbols, respectively.

[0102] In some embodiments, the terminal device may select a device group with the best signal quality of the first information from multiple device groups as the first device group. This application does not limit the method for measuring the signal quality of the first information. For example, the signal quality of the first information can be measured by RSRQ (Reference Signal Receiving Quality), RSRP (Reference Signal Receiving Power), SINR (Signal to Interference plus Noise Ratio), etc. of the first information.

[0103] In some embodiments, a terminal device may select, from among multiple device groups, a device group that is closer to the terminal device as a first device group. The distance between the terminal device and a device group may refer to the distance between the terminal device and a primary wireless access device of the device group, or may refer to the average of the distances between the terminal device and each wireless access device in the device group, which is not limited in this application.

[0104] The technical solution provided by the embodiments of the present application provides a method for establishing a communication connection between a terminal device and a device group. The terminal device can establish a communication connection with one of multiple device groups through a random access process. This eliminates the need for the terminal device to be served by all wireless access devices simultaneously, reducing signaling overhead and computational complexity. By providing a communication connection between the terminal device and only one device group, better network scalability can be achieved.

[0105] In addition, different device groups use different time domain, frequency domain, and code domain resources to send the first information, which can ensure that the terminal device can distinguish different device groups through the first information, thereby determining the first device group among multiple device groups and establishing a communication connection with the first device group.

[0106] After receiving the first information sent by the first device group, the terminal device needs to further receive the configuration information required for the random access process to establish a communication connection with the first device group through the random access process. The above configuration information is transmitted in the PDSCH and scheduled in the frequency range of the initial downlink BWP via the PDCCH.

[0107] In some embodiments, the terminal device first receives a PDCCH that schedules a PDSCH carrying the configuration information. In some embodiments, the transmission configuration information of the PDCCH is carried by the first information.

[0108] In some embodiments, the transmission configuration information of the PDCCH includes at least one of the following:

[0109] The size of the frequency domain resources occupied by PDCCH;

[0110] The size of the time domain resources occupied by PDCCH;

[0111] The location of the frequency domain resources occupied by PDCCH;

[0112] The location of the time domain resources occupied by PDCCH.

[0113] In some embodiments, the transmission configuration information of the PDCCH may also be referred to as the transmission configuration information of the CORESET (Control Resource Set) and the search space set corresponding to the PDCCH. The transmission configuration information of the CORESET and the search space set corresponding to the PDCCH includes at least one of the following:

[0114] The size of the frequency domain resources occupied by the CORESET corresponding to the PDCCH;

[0115] The size of the time domain resources occupied by the CORESET corresponding to the PDCCH;

[0116] The location of the frequency domain resources occupied by the CORESET corresponding to the PDCCH;

[0117] The location of the time domain resources occupied by the search space set corresponding to the PDCCH.

[0118] The size of the above-mentioned frequency domain resources can be understood as bandwidth, and the size of the time domain resources can be understood as the number of symbols. The position of the frequency domain resources can be indicated by the frequency offset value of the PDCCH relative to the first information or the frequency offset value of the PDCCH relative to the initial downlink BWP. The position of the time domain resources can be indicated by the time domain offset value of the PDCCH relative to the first information or the time domain offset value of the PDCCH relative to the frame boundary. The search space set corresponds to the position of the PDCCH in the time domain, and the terminal device can detect a specific PDCCH or DCI (Downlink Control Information) by monitoring the search space set.

[0119] Since the PDCCH and PDSCH in the random access process are both scheduled in the initial downlink BWP, the frequency range of the initial downlink BWP needs to be determined.

[0120] In some embodiments, if the CORESET corresponding to the PDCCH that schedules the PDSCH carrying configuration information is indicated and determined by information bits in the first message, the frequency range of the CORESET can be used as the frequency range of the initial downlink BWP. This is shown as initial downlink BWP 1 in Figure 7. For example, if AP group #0 sends the first message on RBs #20-39, and the information bits in the first message indicate that the frequency offset value of the CORESET corresponding to the PDCCH relative to the first message is 2 RBs, and the occupied bandwidth is 24 RBs, then the terminal device determines that the frequency range of the CORESET and the initial downlink BWP is RBs #18-41.

[0121] In some embodiments, if the information bits in the first information indicate the frequency offset value of the current first information relative to the initial downlink BWP, then the initial downlink BWP can be determined after the information bits in the first information further indicate the bandwidth of the initial downlink BWP. For example, initial downlink BWP 2 is shown in Figure 7. For example, if AP group #0 sends the first information over RBs #20-39, and the information bits in the first information indicate that the frequency offset value of the current first information relative to the initial downlink BWP is 2 RBs, and the bandwidth of the initial downlink BWP is 100 RBs, then the terminal device determines that the frequency range of the initial downlink BWP is RBs #18-117.

[0122] Through the above method, the terminal device can determine the initial downlink BWP based on the CORESET of the PDCCH, without the need to additionally indicate the frequency range of the initial downlink BWP. The frequency range of the initial downlink BWP can also be indicated in the first information, in which case a more flexible initial downlink BWP can be configured.

[0123] The terminal device receives the PDSCH according to the PDCCH. The PDSCH carries the configuration information of the device group.

[0124] In some embodiments, the configuration information includes at least one of the following:

[0125] Initial uplink BWP;

[0126] Random access resources;

[0127] Ephemeris information associated with the device group transmitting PDSCH.

[0128] In some embodiments, different device groups use the same time-frequency resources to transmit PDSCH.

[0129] In some embodiments, the PDSCH carries configuration information required for random access procedures associated with multiple device groups.

[0130] If different device groups use the same time-frequency resources to transmit PDSCH, the PDSCH needs to carry the configuration information required for the random access procedure associated with all device groups, such as {AP group #0, configuration information #0}, {AP group #1, configuration information #1}, etc. Based on the results of previously receiving the first information from different device groups, the terminal device selects one device group as the first device group and initiates a random access procedure based on the configuration information associated with the first device group. The first device group (or the first wireless access device in the first device group) determines whether to establish a communication connection with the terminal device based on the configuration information used in the random access procedure.

[0131] Exemplarily, as shown in FIG8 , different device groups transmit first information on different time domain, frequency domain, or code domain resources ( 810 ), and different device groups transmit PDSCH ( 820 ) carrying configuration information associated with all device groups using the same time-frequency resources. The terminal device selects one device group as the first device group and initiates a random access process ( 830 ).

[0132] In some embodiments, the PDSCH can carry the initial uplink BWP associated with all device groups, such as {AP group #0, initial uplink BWP #0}, {AP group #1, initial uplink BWP #1}. When the terminal device previously received the first information of different device groups, it detected that the receiving power of the first information of AP group #0 was larger, so it selected the initial uplink BWP #0 corresponding to AP group #0 to send PRACH (Physical Random Access Channel). After AP group #0 receives the PRACH sent by the terminal device, it completes the subsequent random access process with it to establish a communication connection. Similarly, the PDSCH can also carry the random access resources associated with all device groups, and the process will not be repeated here.

[0133] In some embodiments, different device groups use different time-frequency resources to send PDSCH.

[0134] In some embodiments, the PDSCH carries configuration information required for a random access procedure associated with the group of devices transmitting the PDSCH.

[0135] If different device groups use different time-frequency resources to transmit the PDSCH, the PDSCH only needs to carry the configuration information required for the random access procedure associated with the device group to which it belongs. Based on the results of the previous reception of the first information from different device groups, the terminal device selects the PDSCH of a device group (the first device group) to receive and initiates a random access procedure based on the configuration information carried on the PDSCH. The device group then determines whether to establish a communication connection with the terminal based on whether the terminal device initiates the random access procedure using its associated configuration information.

[0136] Exemplarily, as shown in FIG9 , different device groups send first information on different time domain, frequency domain, or code domain resources ( 910 ), and the terminal device selects the PDSCH of a device group (the first device group) for reception ( 920 ). The terminal device initiates a random access process based on the configuration information carried on the PDSCH and establishes a communication connection with the first device group ( 930 ).

[0137] For example, AP group #0 and AP group #1 send PDSCH on time-frequency resource #0 and time-frequency resource #1, respectively, and are associated with configuration information #0 and configuration information #1, such as initial uplink BWP#0 and initial uplink BWP#1, respectively. When the terminal device previously received the first information of different device groups, it detected that the receiving power of the first information of AP group #0 was larger, so it further received PDSCH on time-frequency resource #0, obtained configuration information #0, such as initial uplink BWP#0, and sent PRACH on initial uplink BWP#0. After receiving the PRACH sent by the terminal device, AP group #0 completes the subsequent random access process with it to establish a communication connection. Similarly, the configuration information carried by the PDSCH can also be the random access resource associated with its device group, and the process will not be repeated.

[0138] Furthermore, in the NTN system, different satellites or satellite clusters can be considered different device groups. Because different satellites have different ephemeris information, the configuration information carried by the PDSCH needs to further include the satellite's ephemeris information. Similarly, if different device groups use the same time-frequency resources to transmit the PDSCH, the PDSCH must carry the ephemeris information associated with all device groups. If different AP groups use different time-frequency resources to transmit the PDSCH, the PDSCH only needs to carry the ephemeris information associated with their device group. The process for a terminal device to select the ephemeris information associated with a device group is similar to the process for selecting configuration information described above and will not be repeated here.

[0139] Ephemeris information is used to describe satellite orbit information or orbital parameters and their rate of change at a certain moment or satellite position and its rate of change at a certain moment.

[0140] Through the above method, different device groups can use the same time-frequency resources to transmit PDSCH, making the time-frequency resources occupied by PDSCH more concentrated. Different device groups can also use different time-frequency resources to transmit PDSCH. In this case, the terminal device only needs to receive the PDSCH transmitted by the first device group it selects, reducing the information the terminal device needs to receive.

[0141] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0142] Please refer to Figure 10, which shows a block diagram of a device for establishing a communication connection provided by one embodiment of the present application. The device has the function of implementing the above-mentioned method for establishing a communication connection. The function can be implemented by hardware or by hardware executing corresponding software. The device can be the terminal device described above, or it can be set in a terminal device. As shown in Figure 10, the device 1000 may include: a processing module 1010.

[0143] The processing module 1010 is configured to establish a communication connection with a first device group through a random access process, where the first device group includes at least one wireless access device.

[0144] In some embodiments, the apparatus 1000 further includes a receiving module (not shown in FIG10 ), the receiving module being configured to receive first information respectively sent by a plurality of apparatus groups, wherein different apparatus groups use different resources to send the first information;

[0145] The processing module 1010 is configured to determine the first device group from the multiple device groups.

[0146] In some embodiments, the different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

[0147] In some embodiments, the first information includes at least one of the following:

[0148] identification information of the device group that sends the first information;

[0149] the location of the time-frequency resources used for sending the first information;

[0150] transmission configuration information of a PDCCH to be sent by the device group sending the first information, where the PDCCH is used to schedule transmission of a PDSCH;

[0151] The location of the frequency domain resources occupied by the initial downlink BWP;

[0152] The size of the frequency domain resources occupied by the initial downlink BWP.

[0153] In some embodiments, the transmission configuration information of the PDCCH includes at least one of the following:

[0154] The size of the frequency domain resources occupied by the PDCCH;

[0155] The size of the time domain resources occupied by the PDCCH;

[0156] The location of the frequency domain resources occupied by the PDCCH;

[0157] The location of the time domain resources occupied by the PDCCH.

[0158] In some embodiments, different device groups use the same time-frequency resources to send the PDSCH.

[0159] In some embodiments, the PDSCH carries configuration information required for a random access procedure associated with the multiple device groups.

[0160] In some embodiments, different device groups use different time-frequency resources to send the PDSCH.

[0161] In some embodiments, the PDSCH carries configuration information required for a random access procedure associated with a group of devices transmitting the PDSCH.

[0162] In some embodiments, the configuration information includes at least one of the following:

[0163] Initial uplink BWP;

[0164] Random access resources;

[0165] Ephemeris information associated with the device group that transmits the PDSCH.

[0166] In some embodiments, the identification information of the device group includes at least one of the following:

[0167] an index of the device group;

[0168] The index of the master wireless access device in the device group.

[0169] In some embodiments, each wireless access device included in the plurality of device groups is connected to the same processing unit or different processing units that are connected to each other.

[0170] Please refer to Figure 11, which shows a block diagram of a device for establishing a communication connection according to one embodiment of the present application. This device has the functionality to implement the aforementioned method for establishing a communication connection. This functionality can be implemented in hardware or by hardware executing corresponding software. This device can be the first wireless access device described above, or it can be provided within the first wireless access device. As shown in Figure 11, the device 1100 may include a processing module 1110.

[0171] The processing module 1110 is configured to establish a communication connection with a terminal device through a random access process, wherein the first device group includes at least one wireless access device, and the first wireless access device is any wireless access device in the first device group.

[0172] In some embodiments, multiple device groups use different resources to send the first information to the terminal device, and the first device group is determined from the multiple device groups.

[0173] In some embodiments, the different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

[0174] In some embodiments, the first information includes at least one of the following:

[0175] identification information of the device group that sends the first information;

[0176] the location of the time-frequency resources used for sending the first information;

[0177] transmission configuration information of a PDCCH to be sent by the device group sending the first information, where the PDCCH is used to schedule transmission of a PDSCH;

[0178] The location of the frequency domain resources occupied by the initial downlink bandwidth part BWP;

[0179] The size of the frequency domain resources occupied by the initial downlink BWP.

[0180] In some embodiments, the transmission configuration information of the PDCCH includes at least one of the following:

[0181] The size of the frequency domain resources occupied by the PDCCH;

[0182] The size of the time domain resources occupied by the PDCCH;

[0183] The location of the frequency domain resources occupied by the PDCCH;

[0184] The location of the time domain resources occupied by the PDCCH.

[0185] In some embodiments, different device groups use the same time-frequency resources to send the PDSCH.

[0186] In some embodiments, the PDSCH carries configuration information required for a random access procedure associated with the multiple device groups.

[0187] In some embodiments, different device groups use different time-frequency resources to send the PDSCH.

[0188] In some embodiments, the PDSCH carries configuration information required for a random access procedure associated with a group of devices transmitting the PDSCH.

[0189] In some embodiments, the configuration information includes at least one of the following:

[0190] Initial uplink BWP;

[0191] Random access resources;

[0192] Ephemeris information associated with the device group that transmits the PDSCH.

[0193] In some embodiments, the identification information of the device group includes at least one of the following:

[0194] an index of the device group;

[0195] The index of the master wireless access device in the device group.

[0196] In some embodiments, each wireless access device included in the plurality of device groups is connected to the same processing unit or different processing units that are connected to each other.

[0197] It should be noted that, when the device provided in the above embodiment realizes its function, it only uses the division of the above-mentioned functional modules as an example. In actual application, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0198] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here. For details not described in detail in the embodiment of the device, reference can be made to the above method embodiment.

[0199] Please refer to FIG12 , which shows a schematic diagram of the structure of a communication device provided by an embodiment of the present application. The communication device 1200 may include: a processor 1201 , a transceiver 1202 , and a memory 1203 .

[0200] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0201] The transceiver 1202 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0202] The memory 1203 may be connected to the processor 1201 and the transceiver 1202 .

[0203] The memory 1203 may be used to store a computer program executed by the processor, and the processor 1201 is used to execute the computer program to implement each step in the above method embodiment.

[0204] In an exemplary embodiment, when the communication device is a terminal device, the processor 1201 is configured to establish a communication connection with a first device group through a random access procedure, where the first device group includes at least one wireless access device.

[0205] In an exemplary embodiment, when the communication device is a wireless access device (such as the first wireless access device in the first device group), the processor 1201 is used to establish a communication connection with the terminal device through a random access process, and the first device group includes at least one wireless access device, and the first wireless access device is any one wireless access device in the first device group.

[0206] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0207] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0208] The embodiment of the present application also provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method for establishing a communication connection on the terminal device side or the method for establishing a communication connection on the wireless access device side. Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or an optical disk, etc. Among them, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0209] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the method for establishing a communication connection on the above-mentioned terminal device side, or to implement the method for establishing a communication connection on the above-mentioned wireless access device side.

[0210] An embodiment of the present application also provides a computer program product, which includes computer instructions, which are stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the method for establishing a communication connection on the above-mentioned terminal device side, or to implement the method for establishing a communication connection on the above-mentioned wireless access device side.

[0211] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0212] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0213] In some embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0214] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0215] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0216] The term “greater than or equal to” mentioned herein may mean greater than or equal to, or greater than, and the term “less than or equal to” may mean less than or equal to, or less than.

[0217] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0218] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0219] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for establishing a communication connection, characterized in that: The method is performed by a terminal device, and the method includes: A communication connection is established with a first device group through a random access process, wherein the first device group includes at least one wireless access device.

2. The method according to claim 1, characterized in that Before establishing a communication connection with the first device group through a random access process, the method further includes: receiving first information respectively sent by a plurality of device groups, wherein different device groups use different resources to send the first information; The first device group is determined from among the plurality of device groups.

3. The method according to claim 2, characterized in that The different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

4. The method according to claim 2 or 3, characterized in that: The first information includes at least one of the following: identification information of a device group sending the first information; The location of the time-frequency resources used for sending the first information; transmission configuration information of a physical downlink control channel PDCCH to be sent by the device group sending the first information, wherein the PDCCH is used to schedule transmission of a physical downlink shared channel PDSCH; The location of the frequency domain resources occupied by the initial downlink bandwidth part BWP; The size of the frequency domain resources occupied by the initial downlink BWP.

5. The method according to claim 4, characterized in that The transmission configuration information of the PDCCH includes at least one of the following: The size of the frequency domain resources occupied by the PDCCH; The size of the time domain resources occupied by the PDCCH; The location of the frequency domain resources occupied by the PDCCH; The location of the time domain resources occupied by the PDCCH.

6. The method according to claim 4 or 5, characterized in that: Different device groups use the same time-frequency resources to send the PDSCH.

7. The method according to claim 6, characterized in that The PDSCH carries configuration information required for a random access procedure associated with the multiple device groups.

8. The method according to claim 4 or 5, characterized in that: Different device groups use different time-frequency resources to send the PDSCH.

9. The method according to claim 8, characterized in that The PDSCH carries configuration information required for a random access procedure associated with a group of devices sending the PDSCH.

10. The method according to claim 7 or 9, characterized in that: The configuration information includes at least one of the following: Initial uplink BWP; Random access resources; The ephemeris information associated with the device group sending the PDSCH.

11. The method according to any one of claims 4 to 10, characterized in that: The identification information of the device group includes at least one of the following: an index of the device group; An index of a master wireless access device in the device group.

12. The method according to any one of claims 2 to 11, characterized in that Each wireless access device included in the plurality of device groups is connected to the same processing unit or different processing units that are connected to each other.

13. A method for establishing a communication connection, characterized in that: The method is performed by a first wireless access device in a first device group, and the method includes: A communication connection is established with a terminal device through a random access process, wherein the first device group includes at least one wireless access device, and the first wireless access device is any wireless access device in the first device group.

14. The method according to claim 13, characterized in that A plurality of device groups use different resources to send first information to the terminal device, and the first device group is determined from the plurality of device groups.

15. The method according to claim 14, characterized in that The different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

16. The method according to claim 14 or 15, characterized in that The first information includes at least one of the following: identification information of a device group sending the first information; The location of the time-frequency resources used for sending the first information; transmission configuration information of a physical downlink control channel PDCCH to be sent by the device group sending the first information, wherein the PDCCH is used to schedule transmission of a physical downlink shared channel PDSCH; The location of the frequency domain resources occupied by the initial downlink bandwidth part BWP; The size of the frequency domain resources occupied by the initial downlink BWP.

17. The method according to claim 16, characterized in that The transmission configuration information of the PDCCH includes at least one of the following: The size of the frequency domain resources occupied by the PDCCH; The size of the time domain resources occupied by the PDCCH; The location of the frequency domain resources occupied by the PDCCH; The location of the time domain resources occupied by the PDCCH.

18. The method according to claim 16 or 17, characterized in that Different device groups use the same time-frequency resources to send the PDSCH.

19. The method according to claim 18, characterized in that The PDSCH carries configuration information required for a random access procedure associated with the multiple device groups.

20. The method according to claim 16 or 17, characterized in that Different device groups use different time-frequency resources to send the PDSCH.

21. The method according to claim 20, characterized in that The PDSCH carries configuration information required for a random access procedure associated with a group of devices sending the PDSCH.

22. The method according to claim 19 or 21, characterized in that The configuration information includes at least one of the following: Initial uplink BWP; Random access resources; The ephemeris information associated with the device group sending the PDSCH.

23. The method according to any one of claims 16 to 22, characterized in that The identification information of the device group includes at least one of the following: an index of the device group; An index of a master wireless access device in the device group.

24. The method according to any one of claims 16 to 23, characterized in that Each wireless access device included in the plurality of device groups is connected to the same processing unit or different processing units that are connected to each other.

25. A device for establishing a communication connection, characterized in that: The device comprises: The processing module is used to establish a communication connection with a first device group through a random access process, wherein the first device group includes at least one wireless access device.

26. The device according to claim 25, characterized in that The device also includes: A receiving module, configured to receive first information respectively sent by a plurality of device groups, wherein different device groups use different resources to send the first information; The processing module is further configured to determine the first device group from the multiple device groups.

27. The device according to claim 26, characterized in that The different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

28. The device according to claim 26 or 27, characterized in that The first information includes at least one of the following: identification information of a device group sending the first information; The location of the time-frequency resources used for sending the first information; transmission configuration information of a physical downlink control channel PDCCH to be sent by the device group sending the first information, wherein the PDCCH is used to schedule transmission of a physical downlink shared channel PDSCH; The location of the frequency domain resources occupied by the initial downlink bandwidth part BWP; The size of the frequency domain resources occupied by the initial downlink BWP; The location of the frequency domain resources occupied by the initial downlink bandwidth part BWP; The size of the frequency domain resources occupied by the initial downlink BWP.

29. The device according to claim 28, characterized in that The transmission configuration information of the PDCCH includes at least one of the following: The size of the frequency domain resources occupied by the PDCCH; The size of the time domain resources occupied by the PDCCH; The location of the frequency domain resources occupied by the PDCCH; The location of the time domain resources occupied by the PDCCH.

30. The device according to claim 28 or 29, characterized in that Different device groups use the same time-frequency resources to send the PDSCH.

31. The device according to claim 30, characterized in that The PDSCH carries configuration information required for a random access procedure associated with the multiple device groups.

32. The device according to claim 28 or 29, characterized in that Different device groups use different time-frequency resources to send the PDSCH.

33. The device according to claim 32, characterized in that The PDSCH carries configuration information required for a random access procedure associated with a group of devices sending the PDSCH.

34. The device according to claim 31 or 33, characterized in that The configuration information includes at least one of the following: Initial uplink BWP; Random access resources; The ephemeris information associated with the device group sending the PDSCH.

35. The device according to any one of claims 28 to 34, characterized in that The identification information of the device group includes at least one of the following: an index of the device group; An index of a master wireless access device in the device group.

36. The device according to any one of claims 26 to 35, characterized in that Each wireless access device included in the plurality of device groups is connected to the same processing unit or different processing units that are connected to each other.

37. A device for establishing a communication connection, characterized in that: Applied to a first wireless access device in a first device group, the device comprises: The processing module is used to establish a communication connection with a terminal device through a random access process, wherein the first device group includes at least one wireless access device, and the first wireless access device is any wireless access device in the first device group.

38. The device according to claim 37, characterized in that A plurality of device groups use different resources to send first information to the terminal device, and the first device group is determined from the plurality of device groups.

39. The device according to claim 38, characterized in that The different resources include at least one of the following: different time domain resources, different frequency domain resources, and different code domain resources.

40. The device according to claim 38 or 39, characterized in that The first information includes at least one of the following: identification information of a device group sending the first information; The location of the time-frequency resources used for sending the first information; The device group sending the first information is transmission configuration information of a physical downlink control channel PDCCH to be sent, and the PDCCH is used to schedule transmission of a physical downlink shared channel PDSCH.

41. The device according to claim 40, characterized in that The transmission configuration information of the PDCCH includes at least one of the following: The size of the frequency domain resources occupied by the PDCCH; The size of the time domain resources occupied by the PDCCH; The location of the frequency domain resources occupied by the PDCCH; The location of the time domain resources occupied by the PDCCH.

42. The device according to claim 40 or 41, characterized in that Different device groups use the same time-frequency resources to send the PDSCH.

43. The device according to claim 42, characterized in that The PDSCH carries configuration information required for a random access procedure associated with the multiple device groups.

44. The device according to claim 40 or 41, characterized in that Different device groups use different time-frequency resources to send the PDSCH.

45. The device according to claim 44, characterized in that The PDSCH carries configuration information required for a random access procedure associated with a group of devices sending the PDSCH.

46. ​​The device according to claim 43 or 45, characterized in that The configuration information includes at least one of the following: Initial uplink bandwidth part BWP; Random access resources; The ephemeris information associated with the device group sending the PDSCH.

47. The device according to any one of claims 40 to 46, characterized in that The identification information of the device group includes at least one of the following: an index of the device group; An index of a master wireless access device in the device group.

48. The device according to any one of claims 40 to 47, characterized in that Each wireless access device included in the plurality of device groups is connected to the same processing unit or different processing units that are connected to each other.

49. A communication device, characterized in that: The communication device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the method according to any one of claims 1 to 12, or implements the method according to any one of claims 13 to 24.

50. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method according to any one of claims 1 to 12, or to implement the method according to any one of claims 13 to 24.

51. A chip, characterized in that: The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method according to any one of claims 1 to 12, or to implement the method according to any one of claims 13 to 24.

52. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the method according to any one of claims 1 to 12, or to implement the method according to any one of claims 13 to 24.

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