Beam resource allocation method, beam switching method, device and storage medium

Abstract

The present invention provides a beam resource allocation method, a beam switching method, a device and a storage medium. The beam resource allocation method comprises: a network side device allocates time-frequency resources of a control beam to a terminal; the network side device allocates time-frequency resources of a service beam to the terminal. The present invention can improve the management effect of beam resources.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a beam resource allocation method, a beam switching method, a device, and a storage medium. Background Art

[0002] Some communication systems support multiple beam coverage methods, such as wide-beam continuous coverage or dynamic spot beam (i.e., beam hopping) coverage. For dynamic spot beam coverage, the beam's service time and coverage range are dynamically variable. These changes can affect terminal beam access or data transmission. Therefore, current beam resource management on network-side devices suffers from poor management effectiveness. Summary of the Invention

[0003] Embodiments of the present invention provide a beam resource allocation method, a beam switching method, a device, and a storage medium to solve the problem of poor management effect in beam resource management.

[0004] An embodiment of the present invention provides a beam resource allocation method, including:

[0005] The network-side device allocates time-frequency resources for controlling the beam to the terminal;

[0006] The network side device allocates time-frequency resources of the service beam to the terminal.

[0007] Optionally, the network-side device allocating time-frequency resources of a control beam to the terminal includes:

[0008] The network-side device sends a broadcast message to the terminal, where the broadcast message includes the time-frequency resources of the control beam.

[0009] Optionally, the broadcast message further includes at least one of the following:

[0010] Orbital altitude of broadcasting satellite;

[0011] The location information of the synchronization grid of the synchronization signal block (SSB) of the service beam;

[0012] The mapping relationship between wave bits and preambles;

[0013] Wave position dwell time;

[0014] number of waves;

[0015] The scanning period of the control beam.

[0016] Optionally, the time-frequency resources of the control beam include:

[0017] Random access time-frequency resources of the control beam;

[0018] The random access time-frequency resources of the control beam include:

[0019] A time domain position, an uplink initial bandwidth part (BWP) of the control beam, and frequency resources allocated in the uplink initial BWP of the control beam;

[0020] Optionally, the network-side device allocating time-frequency resources of a service beam to the terminal includes:

[0021] The network-side device sends a random access response to the terminal on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam.

[0022] Optionally, the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or

[0023] The time-frequency resources of the service beam are used for the terminal to switch from the control beam to the activated BWP of the service beam.

[0024] Optionally, when the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include:

[0025] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access;

[0026] or,

[0027] In a case where the time-frequency resources of the service beam are used for an activated BWP for the terminal to switch from the control beam to the service beam, the time-frequency resources of the service beam include:

[0028] The time domain position, the uplink activated BWP of the service beam and the frequency resources allocated in the uplink activated BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access.

[0029] Optionally, the time-frequency resources of the control beam include:

[0030] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0031] or

[0032] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; the network side device allocating the time and frequency resources of the service beam to the terminal, including:

[0033] The network side device sends a contention resolution message and a radio resource control (RRC) connection establishment message to the terminal through the control beam, and the network side allocates the time-frequency resources of the service beam required for the RRC connection establishment completion signaling through downlink control information (DCI) signaling, as well as the preamble and random access time-frequency resources exclusive to the service beam for non-contention random access.

[0034] Optionally, the method further includes:

[0035] The network side device receives the terminal capability information sent by the terminal;

[0036] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0037] Optionally, the method further includes:

[0038] The network side device receives the RRC connection request and terminal capability information sent by the terminal on the time-frequency resources of the control beam.

[0039] Optionally, the method further includes:

[0040] In a case where the terminal fails to switch from the control beam to the service beam, the network-side device receives a non-contention random access initiated by the terminal at a location of a random access resource of the service beam.

[0041] Optionally, the service beam configuration includes at least one of the following:

[0042] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0043] Each BWP is equipped with a measurement signal.

[0044] Optionally, the method further includes:

[0045] The network side device notifies the terminal to perform measurement on the specified BWP;

[0046] The network side device receives the measurement value fed back by the terminal;

[0047] The network-side device determines whether to perform BWP switching or cell switching according to the measurement amount.

[0048] Optionally, the measurement signal includes at least one of the following:

[0049] SSB and Channel State Information Reference Signal (CSI-RS).

[0050] Optionally, the service beam serves multiple beam positions in a time-sharing manner, and an uplink activated BWP and a downlink activated BWP configured for each beam position of the service beam are based on at least one of the following configurations:

[0051] Terminal capabilities and service requirements of terminals in each waveband.

[0052] Optionally, the method further includes:

[0053] When the beam service of the wave position where the terminal is located is about to expire, the network side device requests service beam resources from the target network side device and notifies the terminal of at least one of the downlink initial BWP and uplink initial BWP of the target network side device.

[0054] An embodiment of the present invention provides a beam switching method, including:

[0055] The terminal obtains the time-frequency resources allocated by the network side device to control the beam;

[0056] The terminal obtains the time-frequency resources of the service beam allocated by the network side device;

[0057] The terminal switches from the control beam to the service beam.

[0058] Optionally, the terminal obtains the time-frequency resources allocated by the network-side device to the control beam, including:

[0059] The terminal receives a broadcast message sent by the network side device, where the broadcast message includes the time-frequency resources of the control beam.

[0060] Optionally, the broadcast message further includes at least one of the following:

[0061] Orbital altitude of broadcasting satellite;

[0062] The location information of the SSB synchronization grid of the service beam;

[0063] The mapping relationship between the wave position and the preamble;

[0064] Wave position dwell time;

[0065] number of waves;

[0066] The scanning period of the control beam.

[0067] Optionally, the time-frequency resources of the control beam include:

[0068] Random access time-frequency resources of the control beam;

[0069] The random access time-frequency resources of the control beam include:

[0070] The time domain position, the uplink initial bandwidth part BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0071] Optionally, the terminal sends a preamble on a random access time-frequency resource;

[0072] or

[0073] The terminal reports terminal capabilities while sending a preamble on the random access time-frequency resource.

[0074] Optionally, the terminal obtains the time-frequency resources of the service beam allocated by the network-side device, including:

[0075] The terminal receives a random access response sent by the network side device on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam.

[0076] Optionally, the terminal switching from the control beam to the service beam includes:

[0077] The terminal sends an RRC connection request to the network side device when switching from the control beam to the initial BWP of the service beam; or

[0078] The terminal switches from the control beam to the activated BWP of the service beam and sends an RRC connection request to the network side device.

[0079] Optionally, when the terminal switches from the control beam to the initial BWP of the service beam, the time-frequency resources of the service beam include:

[0080] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a handover failure from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam;

[0081] or,

[0082] In a case where the terminal switches from the control beam to the activated BWP of the service beam, the time-frequency resources of the service beam include:

[0083] The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal uses the preamble dedicated to the service beam to initiate non-contention random access.

[0084] Optionally, the time-frequency resources of the control beam include:

[0085] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0086] or

[0087] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0088] The terminal obtains the time-frequency resources of the service beam allocated by the network-side device, including:

[0089] The terminal receives a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtains the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a switching failure from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam;

[0090] The terminal switches from the control beam to the service beam, including:

[0091] The terminal switches from the control beam to the service beam to establish an RRC connection.

[0092] Optionally, the method further includes:

[0093] The terminal sends terminal capability information to the network side device;

[0094] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0095] Optionally, the method further includes:

[0096] The terminal sends an RRC connection request and terminal capability information to the network side device on the control beam time-frequency resource.

[0097] Optionally, the method further includes:

[0098] In a case where the terminal fails to switch from the control beam to the service beam, the terminal initiates a non-contention random access to the network side device using a preamble dedicated to the service beam at the location of the random access resource of the service beam; or

[0099] In the case that the terminal fails to switch from the control beam to the service beam, the terminal detects the synchronization signal block SSB of the service beam at the position of the SSB synchronization grid, and initiates initial access to the network side device in the service beam based on the synchronization signal block and random access resources, wherein the position of the SSB synchronization grid is configured to the terminal by the network side device.

[0100] Optionally, the service beam configuration includes at least one of the following:

[0101] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0102] Each BWP is equipped with a measurement signal.

[0103] Optionally, the method further includes:

[0104] The terminal receives a notification sent by the network-side device, where the notification is used to notify the terminal to perform measurement on a specified BWP;

[0105] The terminal feeds back to the network-side device the measurement quantity measured by the terminal on the designated BWP.

[0106] Optionally, the measurement signal includes at least one of the following:

[0107] SSB and channel state information reference signal CSI-RS.

[0108] An embodiment of the present invention further provides a network-side device, comprising: a memory, a transceiver, and a processor, wherein:

[0109] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0110] Allocate time-frequency resources for controlling beams to terminals;

[0111] Allocate time-frequency resources of a service beam to the terminal.

[0112] Optionally, allocating time-frequency resources of a service beam to the terminal includes:

[0113] On the downlink initial BWP of the control beam, a random access response is sent to the terminal, where the random access response is used to allocate time-frequency resources of the service beam.

[0114] Optionally, the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or

[0115] The time-frequency resources of the service beam are used for the terminal to switch from the control beam to the activated BWP of the service beam.

[0116] Optionally, the time-frequency resources of the control beam include:

[0117] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0118] or

[0119] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0120] The allocating the time-frequency resources of the service beam to the terminal includes:

[0121] A contention resolution message and an RRC connection establishment message are sent to the terminal through the control beam. The network side allocates the time-frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, as well as the preamble and random access time-frequency resources exclusive to the service beam for non-contention random access.

[0122] An embodiment of the present invention further provides a terminal, comprising: a memory, a transceiver, and a processor, wherein:

[0123] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0124] Obtain the time and frequency resources allocated by the network side device to control the beam;

[0125] Acquire the time-frequency resources of the service beam allocated by the network-side device;

[0126] Switching from the control beam to the service beam.

[0127] Optionally, the acquiring the time-frequency resources of the service beam allocated by the network-side device includes:

[0128] On the downlink initial BWP of the control beam, a random access response sent by the network side device is received, where the random access response is used to allocate time-frequency resources of the service beam.

[0129] Optionally, the switching from the control beam to the service beam includes:

[0130] An initial BWP switching from the control beam to the service beam sends an RRC connection request to the network side device; or

[0131] The activated BWP that switches from the control beam to the service beam sends an RRC connection request to the network side device.

[0132] Optionally, the time-frequency resources of the control beam include:

[0133] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0134] or

[0135] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0136] The acquiring the time-frequency resources of the service beam allocated by the network side device includes:

[0137] Receiving a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtaining the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a switching failure from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam;

[0138] The switching from the control beam to the service beam includes:

[0139] Switch from the control beam to the service beam to establish an RRC connection.

[0140] An embodiment of the present invention further provides a network-side device, including:

[0141] A first allocation unit, configured to allocate time-frequency resources of a control beam to a terminal;

[0142] The second allocation unit is configured to allocate time-frequency resources of the service beam to the terminal.

[0143] An embodiment of the present invention further provides a terminal, including:

[0144] A first acquisition unit is configured for a terminal to acquire time-frequency resources allocated by a network-side device to control a beam;

[0145] A second acquisition unit, configured to acquire the time-frequency resources of the service beam allocated by the network side device;

[0146] A switching unit is configured to switch from the control beam to the service beam.

[0147] An embodiment of the present invention also provides a processor-readable storage medium, which stores a computer program. The computer program is used to enable the processor to execute the beam resource allocation method provided by the embodiment of the present invention, or the computer program is used to enable the processor to execute the beam switching method provided by the embodiment of the present invention.

[0148] In this embodiment of the present invention, a network device allocates time-frequency resources for a control beam to a terminal, and the network device allocates time-frequency resources for a service beam to the terminal. This allocation of both control beam and service beam time-frequency resources to the terminal allows the terminal to switch from a control beam to a service beam, improving beam resource management. BRIEF DESCRIPTION OF THE DRAWINGS

[0149] Figure 1 It is a schematic diagram of the structure of a network architecture applicable to the implementation of the present invention;

[0150] Figure 2a is a schematic diagram of beam polling coverage provided by an embodiment of the present invention;

[0151] Figure 2b is a schematic diagram of another beam polling coverage provided by an embodiment of the present invention;

[0152] Figure 3 This is a flow chart of a beam resource allocation method provided by an embodiment of the present invention;

[0153] Figure 4 This is a flow chart of a beam resource allocation method provided by an embodiment of the present invention;

[0154] Figure 5 This is a structural diagram of a network-side device provided by an embodiment of the present invention;

[0155] Figure 6 is a structural diagram of a terminal provided by an embodiment of the present invention;

[0156] Figure 7 is a structural diagram of another network-side device provided by an embodiment of the present invention;

[0157] Figure 8 It is a structural diagram of another terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0158] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0159] In embodiments of the present invention, the term "and / or" describes the association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0160] In the embodiments of the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0161] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0162] Embodiments of the present invention provide a beam resource allocation method, a beam switching method, a device, and a storage medium to solve the problem of poor management effect in beam resource management.

[0163] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0164] The technical solution provided by the embodiment of the present invention can be applicable to a variety of systems, especially 6G systems. For example, applicable systems may be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems, 6G systems, etc. These various systems include terminal devices and network devices. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0165] See Figure 1 , Figure 1 This is a schematic diagram of the network architecture applicable to the implementation of the present invention. Figure 1 As shown, it includes a terminal 11 and a network side device 12.

[0166] The terminal involved in the embodiments of the present invention may refer to a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem. The names of terminal devices may vary in different systems. For example, in a 5G system, a terminal device may be referred to as User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a radio access network (RAN). Wireless terminal devices may be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they may be portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile devices that exchange voice and / or data with a radio access network. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and Redcap terminals. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, but is not limited in the embodiments of the present invention.

[0167] The network-side device involved in the embodiments of the present invention may be a satellite, specifically an onboard base station (e.g., a regenerative satellite). Of course, in some embodiments, the network-side device may also be a satellite + base station (e.g., a transparent forwarding satellite), that is, the network-side device has the network functions of both a satellite and a base station. A base station may include multiple cells that provide services to terminals. Depending on the specific application scenario, a base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device over the air interface through one or more sectors, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network.

[0168] The network side device can also coordinate the attribute management of the air interface. For example, the network device involved in the embodiment of the present invention can be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a base station in 6G, or a home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiment of the present invention. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0169] Network devices and terminals can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be either Single User MIMO (SU-MIMO) or Multi User MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or Massive-MIMO. It can also use diversity transmission, precoding, or beamforming.

[0170] The network side equipment can generate control beams and service beams at the same time. Taking the network side equipment as a regenerative satellite as an example, the control beam can use beam hopping polling coverage, and the service beam can cover different wave positions in time-sharing according to user service needs. The service area that can be covered by a beam is called a wave position, such as Figure 2a and Figure 2b As shown, the network side device can poll up to 20 wave positions. Of course, the 20 here is just an example and does not limit the number of wave positions. In some embodiments, in order to increase the coverage range, the network side device adopts a beam hopping polling coverage method for unknown terminal areas, and adopts fixed point coverage for terminals in known location areas. Figure 2a The control beam of the network side device is scanned with polling coverage. Figure 2b In the present invention, the service beam of the network-side device is used to time-share different beam positions for the purpose of meeting the service needs of users in a given area. In the embodiment of the present invention, the service beam of the network-side device has the function of controlling the beam, such as supporting terminal access, specifically initial access and random access.

[0171] In some implementations, two beam design schemes can be considered based on actual needs. One is to use an independent control beam, use narrowband transmission, and cover a larger area based on polling scanning. The other is a service beam that provides data information transmission services for terminals. At the same time, it can also send signaling information based on the pre-acquired terminal location to support terminal access. One service beam can serve multiple beam positions on demand.

[0172] In some embodiments, the control beam can be a dedicated control beam. The basic technical features of the control beam include polling scanning, covering unknown terminal areas, completing initial terminal access, and scheduling idle service beams for data transmission if there is a need for data transmission.

[0173] In some implementations, service beams also function as control beams. When the network knows a terminal's location, it can use the service beam to directly serve that terminal. Furthermore, using information sent via broadcast messages, a terminal can directly initiate an access request based on the service beam's broadcast message. Therefore, using service beams can quickly provide access services to specific terminals, avoiding blind control beam scanning and saving signaling power. However, this requires prior knowledge of the terminal's location.

[0174] It should be noted that, in the embodiment of the present invention, the network side device may have multiple control beams and multiple service beams at the same time, wherein: Figure 2a and Figure 2b A beam is used as an example.

[0175] See Figure 3 , Figure 3 This is a flow chart of a beam resource allocation method provided by an embodiment of the present invention. Figure 3 As shown, the following steps are included:

[0176] 301. The network side device allocates time-frequency resources of the control beam to the terminal;

[0177] 302. The network-side device allocates time-frequency resources of a service beam to the terminal.

[0178] Among them, the time-frequency resources of the above-mentioned control beam can be time-frequency resources used for random access of the terminal, and the time-frequency resources of the above-mentioned service beam can be time-frequency resources used for the terminal to switch from the control beam to the service beam.

[0179] The network side device allocates the time-frequency resources of the control beam to the terminal by means of a control beam or a service beam, and the allocation may be via a broadcast message or a dedicated message.

[0180] The above-mentioned network side device allocates the time-frequency resources of the service beam to the terminal, which can be that the network side device allocates the time-frequency resources of the service beam to the terminal through a control beam or a service beam, and can be sent as a dedicated message.

[0181] It should be noted that the execution order of step 301 and step 302 is not limited. For example: Figure 3 As shown, step 301 is performed first and then step 302, or in some embodiments, these two steps can be performed simultaneously. Step 302 can be performed after a certain time interval after step 301, that is, step 301 can be performed in advance.

[0182] In an embodiment of the present invention, the above steps can be used to allocate time-frequency resources of the control beam and the time-frequency resources of the service beam to the terminal, thereby supporting the terminal to switch from the control beam to the service beam to improve the management effect of the beam resources.

[0183] In an embodiment of the present invention, a terminal may switch from a control beam to a service beam during a random access process, for example, from an RRC connection request (MSG3 in the random access process) to a service beam, or from a control beam to a service beam upon completion of RRC connection establishment. For example, based on resources allocated by the network side, the terminal switches from the initial BWP of the control beam to the initial BWP or activated BWP of the service beam in MSG3 of the random access process, or switches from the initial BWP of the control beam to the activated BWP of the service beam upon completion of RRC connection establishment. This satisfies dynamic service arrival based on the terminal, allows for flexible beam configuration, and enables efficient beam scheduling and management.

[0184] As an optional implementation manner, the network side device allocating time-frequency resources of the control beam to the terminal includes:

[0185] The network-side device sends a broadcast message to the terminal, where the broadcast message includes the time-frequency resources of the control beam.

[0186] The above broadcast message may be sent on a control beam or a service beam.

[0187] For example, the network configures a downlink initial BWP and an uplink initial BWP for each beam. The downlink initial BWP can meet the bandwidth requirements of terminals with different capability levels. The size of the uplink initial BWP can ensure the uplink transmission needs of the initial access process and ensure that all terminals can meet the requirements.

[0188] The above broadcast message may be sent on the initial downlink BWP, and the broadcast message may include main system information, control resource set (CORESET) #0 and system information block (SIB) 1 information.

[0189] Optionally, the broadcast message further includes at least one of the following:

[0190] Orbital altitude of broadcasting satellite;

[0191] The location information of the SSB synchronization grid of the service beam;

[0192] The mapping relationship between wave position and preamble;

[0193] Wave position dwell time;

[0194] number of waves;

[0195] The scanning period of the control beam.

[0196] Among them, the mapping relationship between the above-mentioned wave position and the preamble can represent a preamble sequence exclusive to each wave position, such as a preamble sequence exclusive to a control beam, such as a preamble sequence exclusive to a service beam. For example: the mapping relationship between the above-mentioned wave position and the preamble includes a mapping relationship between a control beam and the preamble, and a mapping relationship between a service beam and the preamble. Among them, in an embodiment of the present invention, the preamble used for beam switching failure recovery can be a preamble exclusive to the terminal user. It should be noted that, in some implementation methods, the mapping relationship between the above-mentioned wave position and the preamble may not distinguish between the control beam and the service beam, for example: the control beam and the service beam may use the same preamble sequence.

[0197] Through the above mapping relationship, after the network-side device detects the preamble sequence sent by the terminal, it can know the wave position of the terminal. The network side then sends a timing advance command (TAC) to the terminal and allocates time and frequency resources for the RRC connection request (MSG3).

[0198] In some embodiments, the broadcast message may include random access time-frequency resources, such as at least one of random access time-frequency resources of a control beam and random access time-frequency resources of a service beam.

[0199] As an optional implementation manner, the time-frequency resources of the control beam include:

[0200] Random access time-frequency resources of the control beam;

[0201] The random access time-frequency resources of the control beam include:

[0202] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam.

[0203] The above time domain position is the time domain starting position.

[0204] The random access time-frequency resource of the control beam can be used to enable the terminal to initiate random access in the random access time-frequency resource, such as sending a preamble sequence.

[0205] As an optional implementation manner, the network side device allocating time-frequency resources of the service beam to the terminal includes:

[0206] The network-side device sends a random access response (MSG2) to the terminal on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam.

[0207] This embodiment also includes a network side device receiving a preamble sequence (MSG1) sent by the terminal on the time-frequency resource of the control beam.

[0208] In this implementation, it is possible to allocate time-frequency resources of a service beam to the terminal through a random access response, so as to support the terminal switching from MSG3 in the random access process to the service beam.

[0209] Optionally, the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or

[0210] The time-frequency resources of the service beam are used for the terminal to switch from the control beam to the activated BWP of the service beam.

[0211] The time-frequency resources of the above service beam can support the terminal to switch from MSG3 in the random access process to the service beam.

[0212] Optionally, when the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include:

[0213] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access;

[0214] or,

[0215] In a case where the time-frequency resources of the service beam are used for an activated BWP for the terminal to switch from the control beam to the service beam, the time-frequency resources of the service beam include:

[0216] The time domain position, the uplink activated BWP of the service beam and the frequency resources allocated in the uplink activated BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access.

[0217] The time domain position may be a time domain starting position, and the time-frequency resources of the service beam may support the terminal switching from the control beam to the uplink initial BWP of the service beam, or switching to the uplink activation BWP of the service beam. For example, the terminal switches from the control beam initial BWP to the service beam initial BWP in MSG3; or the terminal switches from the control beam initial BWP to the service beam activation BWP in MSG3.

[0218] Among them, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal can use the preamble dedicated to the service beam to initiate non-contention random access.

[0219] The preamble and random access time-frequency resources dedicated to the above-mentioned service beam for non-contention random access include the time-frequency resources required for sending the preamble for non-contention random access, and after the network side receives the PRACH, it will send a positive response message on the service beam dedicated CORESET, and the terminal listens for the response message on the service beam dedicated CORESET.

[0220] As an optional implementation, the method further includes:

[0221] The network side device receives the terminal capability information sent by the terminal;

[0222] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0223] The terminal capability information may be sent when the terminal sends a preamble. The terminal capability information may include: terminal capability level, such as bandwidth capability, speed, and other information.

[0224] The network side device receives the terminal capability information and allocates time-frequency resources of the control beam and the service beam that match the terminal capability information to the terminal.

[0225] In some implementations, the network-side device may notify the terminal to switch from the initial BWP of the control beam to the initial BWP of the service beam or the activated BWP based on the terminal capability information.

[0226] The following two embodiments are used to illustrate how a terminal switches from the control beam initial BWP to the service beam:

[0227] Example 1:

[0228] This embodiment mainly describes the switching from the initial BWP of the control beam to the initial BWP of the service beam in MSG3, which may be specifically as follows:

[0229] The network-side device broadcasts the satellite orbit altitude, available random access time-frequency resources, and the terminal-specific preamble sequence for each waveband through SIB1. It also notifies the terminal of the waveband dwell time and waveband number, or controls the beam scanning period, and establishes a mapping relationship between the waveband and the random access sequence preamble.

[0230] If a terminal completes initial downlink access in the control beam and receives a data transmission request, the network-side device schedules the service beam to serve it. Based on the control beam scanning period, the uplink initial BWP, and the random access resource, the terminal uses the waveband-specific random access sequence preamble to repeatedly send the preamble sequence (MSG1) multiple times in advance. The terminal can simultaneously report its capabilities when sending the preamble in MSG1. After detecting the preamble sequence, the network-side device determines the waveband the terminal is in. After sending the preamble sequence, the terminal delays a fixed time interval to receive the Random Access Response (RAR), namely MSG2. Among them, the fixed time interval is related to the beam scanning period. The random access response carries the timing advance command word (TAC) and the time-frequency resources of the allocated service beam. The time-frequency resources include the time domain starting position of the service beam serving the terminal, the uplink initial BWP and the downlink initial BWP, and the frequency resources allocated in the uplink initial BWP and the downlink initial BWP. According to the TAC command, the terminal sends an RRC connection request (MSG3) in the specified service beam time-frequency resources to complete the switching from the initial BWP of the control beam to the initial BWP of the service beam.

[0231] Example 2:

[0232] This embodiment mainly describes the switching from the initial BWP of the control beam to the activated BWP of the service beam in MSG3, which may be specifically as follows:

[0233] The network-side device broadcasts the satellite orbit altitude, available random access time-frequency resources, and the terminal-specific preamble sequence for each waveband through SIB1. It also notifies the terminal of the waveband dwell time and waveband number, or controls the beam scanning period, and establishes a mapping relationship between the waveband and the random access sequence preamble.

[0234] If a terminal completes initial downlink access on a control beam and receives a data transmission request, the network will schedule a service beam to serve it. Based on the control beam scanning period, initial uplink BWP, and random access resources, the terminal uses a waveband-specific random access sequence (preamble) to repeatedly transmit a preamble sequence (MSG1) in advance. The terminal simultaneously transmits the preamble and reports its capabilities. After detecting the preamble sequence, the network determines the terminal's waveband. After transmitting the preamble sequence, the terminal delays receiving a random access response (RAR) (MSG2) at a fixed interval. Among them, the fixed time interval is related to the beam scanning period. The random access response carries the timing advance command word (TAC) and the time-frequency resources of the allocated service beam. The time-frequency resources include the time domain starting position of the service beam serving the terminal, and the terminal-specific uplink activation BWP and downlink activation BWP, and the frequency resources allocated in the uplink activation BWP and downlink activation BWP; according to the TAC command, the terminal sends an RRC connection request (MSG3) in the time-frequency resources of the specified service beam activation BWP to complete the initial BWP switching of the control beam to the activation BWP switching of the service beam.

[0235] As an optional implementation manner, the time-frequency resources of the control beam include:

[0236] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0237] or

[0238] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0239] The network-side device allocating time-frequency resources of a service beam to the terminal includes:

[0240] The network side device sends a contention resolution message and an RRC connection establishment message to the terminal through the control beam. The network side allocates the time-frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, as well as the preamble and random access time-frequency resources exclusive to the service beam for non-contention random access.

[0241] Among them, the time-frequency resources of the above-mentioned control beam can be used for the terminal to initiate initial access.

[0242] In this implementation, the time-frequency resources of the service beam allocated to the terminal are the time-frequency resources of the service beam required for the RRC connection establishment completion signaling, so that the terminal can switch from the control beam initial BWP to the service beam when the RRC connection is established.

[0243] Among them, the time-frequency resources of the above-mentioned control beam can be used by the terminal to initiate random access. For example, the time-frequency resources of the above-mentioned control beam include: random access resources of the control beam, and the random access resources include: random access preamble, time domain position of random access, frequency domain starting position of random access and frequency resource block of random access.

[0244] The time-frequency resources of the control beam may be used by the terminal to receive a random access response. For example, the time-frequency resources of the control beam may include downlink time-frequency resources for the control beam to send a random access response.

[0245] The time-frequency resources of the above-mentioned control beam can be used to send an RRC connection request. For example, the time-frequency resources of the above-mentioned control beam may include: the control beam time-frequency resources for sending an RRC connection request, wherein the control beam time-frequency resources for sending an RRC connection request include: the time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam.

[0246] It should be noted that, in the embodiment of the present invention, the time-frequency resources of the control beam may be allocated to the terminal through one or more messages.

[0247] Optionally, the time-frequency resources of the service beam include:

[0248] A service beam time-frequency resource for sending an RRC connection request, wherein the service beam time-frequency resource for sending an RRC connection request includes: a time domain position, an uplink activation BWP of the service beam, and a frequency resource allocated in the uplink activation BWP of the service beam;

[0249] or

[0250] Random access resources specifically allocated for service beams, the random access resources including: random access preamble, random access time domain position, random access frequency domain starting position and random access frequency resource block.

[0251] In this implementation, the terminal can send an RRC connection request or a random access preamble on the service beam.

[0252] Optionally, the method further includes:

[0253] The network side device receives the RRC connection request and terminal capability information sent by the terminal on the time-frequency resources of the control beam.

[0254] Among them, the above-mentioned terminal capability information can be used by the network side equipment to allocate resources to the terminal, such as allocating time-frequency resources of the service beam that matches the above-mentioned terminal capability information to the terminal.

[0255] In some implementations, the network-side device may notify the terminal to switch from the initial BWP of the control beam to the initial BWP of the service beam or the activated BWP based on the terminal capability information.

[0256] The following describes an implementation method of supporting the terminal to switch from the control beam initial BWP to the service beam when the RRC connection is established by taking an example as an example:

[0257] Example 3:

[0258] This embodiment mainly describes the switching from the initial BWP of the control beam to the activated BWP of the service beam when the RRC connection is established. The details can be as follows:

[0259] The network broadcasts the satellite orbit altitude, available random access time-frequency resources, and the terminal-specific preamble sequence for each waveband through SIB1. It also notifies the terminal of the waveband dwell time and waveband number, or controls the beam scanning period, and establishes a mapping relationship between the waveband and the random access sequence preamble.

[0260] If a terminal completes initial downlink access in the control beam and has a data transmission request, the network-side equipment schedules the service beam to serve it. Based on the control beam scanning period, the uplink initial BWP, and the random access resources, the terminal uses the waveband-specific random access sequence preamble to repeatedly transmit the preamble sequence (MSG1) multiple times in advance. After detecting the preamble sequence, the network determines the waveband the terminal is in. After sending the preamble sequence, the terminal delays receiving the random access response RAR (MSG2) at a fixed time interval. The fixed time interval is related to the beam scanning period. The random access response carries the timing advance command (TAC) and the time-frequency resources allocated for the RRC connection request (MSG3). Based on the TAC command, the terminal transmits the RRC connection request (MSG3) in the time-frequency resources of the designated service beam or the control beam, and reports the terminal's capability level, including bandwidth capability, speed, and other information. The network device sends a contention resolution message and an RRC connection establishment message (MSG4). It allocates the time-frequency resources of the service beam required for RRC connection establishment completion signaling to the terminal via DCI signaling. These time-frequency resources include: the time domain starting position of the service beam serving the terminal, the terminal-specific downlink active BWP and uplink active BWP, and the frequency resources allocated in the downlink active BWP and uplink active BWP. When the RRC connection is established, the terminal switches from the initial BWP of the control beam to the active BWP of the service beam.

[0261] As an optional implementation, the method further includes:

[0262] In a case where the terminal fails to switch from the control beam to the service beam, the network-side device receives a non-contention random access initiated by the terminal at a location of a random access resource of the service beam.

[0263] Among them, the random access resources of the above-mentioned service beam can be, when the network side device notifies the terminal that it is ready to switch to the BWP of the service beam, notifying the terminal of the available random access resources of the service beam, or, it can also notify the terminal of the position information of the SSB synchronization grid of the service beam, so that the terminal detects the SSB at the position of the SSB synchronization grid, and initiates access based on the SSB and the random access resources of the service beam.

[0264] In this implementation, the random access resources of the service beam are used to support the terminal to quickly initiate access.

[0265] As an optional implementation manner, the service beam configuration includes at least one of the following:

[0266] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0267] Each BWP is equipped with a measurement signal.

[0268] The activated BWP may be a user-specific BWP, and the activated BWP may also be an initial BWP.

[0269] The network side device may configure different BWPs for different service beams. For example, to meet different terminal capability requirements, the network side device may configure different BWPs for service beams with initial access functions.

[0270] The network side device is further configured with a measurement signal for each BWP. For example, the measurement signal includes at least one of the following: SSB and CSI-RS.

[0271] The network side device may configure the SSB according to a fixed pattern on the initial downlink BWP for initial downlink access, and this SSB can also be used for measurement. In addition, the SSB or CSI-RS is configured on demand on each downlink activated BWP for measurement. The network instructs the terminal to periodically report the measurement value of the specified BWP through high-layer signaling. The network side determines whether to switch the BWP based on the measurement results reported by the terminal. Specifically, the method may further include:

[0272] The network side device notifies the terminal to perform measurement on the specified BWP;

[0273] The network side device receives the measurement value fed back by the terminal;

[0274] The network-side device determines whether to perform BWP switching or cell switching according to the measurement amount.

[0275] The above measurement may be a Radio Resource Management (RRM) measurement.

[0276] The above measurement values ​​can be used to determine whether to perform BWP handover or cell handover according to actual conditions, thereby improving communication performance.

[0277] The above measurement implementation method is described below by an example:

[0278] Example 4:

[0279] This embodiment mainly describes configuring a dedicated measurement reference signal for each BWP, which may be specifically as follows:

[0280] To meet the diverse capabilities of different terminals, network equipment configures different BWPs for service beams with initial access. All service beams have a downlink initial BWP and an uplink initial BWP, as well as multiple downlink active BWPs and uplink active BWPs. Each BWP is also configured with a measurement signal. The network configures synchronization blocks (SSBs) in a fixed pattern on the initial downlink BWP for downlink initial access, which can also be used for measurement. Furthermore, SSBs or CSI-RS are configured on demand on each downlink active BWP for measurement. The network instructs terminals, through higher-layer signaling, to periodically report measurement metrics for a specific BWP. The network then determines whether to switch BWPs based on the measurement results reported by the terminals. Among them, according to the terminal business volume demand of each wave position, a service beam can serve the terminal in two different ways: one way: a service beam always serves the terminal of one wave position, in a staring manner until the pitch angle of the service beam is too small to serve the wave position; the other way: the terminal business volume of one wave position is relatively small. In order to improve the resource utilization of the service beam, one service beam can serve multiple wave positions in a time-sharing manner; according to the terminal capabilities and business requirements of different wave positions, different downlink activation BWPs and uplink activation BWPs are configured for service beams of different wave positions, and whether to switch BWPs is determined according to the quality of the BWP signal.

[0281] As an optional implementation manner, the service beam serves multiple beam positions in a time-sharing manner, and the uplink activated BWP and the downlink activated BWP configured for each beam position of the service beam are based on at least one of the following configurations:

[0282] Terminal capabilities and service requirements of terminals in each waveband.

[0283] In this implementation, the terminal capabilities and service requirements of the terminals in the wave position can be configured according to the terminal capabilities and service requirements of the terminals in the wave position, so that the uplink activated BWP and downlink activated BWP configured in each wave position match the terminal capabilities and meet the terminal service requirements, thereby improving the communication performance.

[0284] As an optional implementation, the method further includes:

[0285] When the beam service of the wave position where the terminal is located is about to expire, the network side device requests service beam resources from the target network side device and notifies the terminal of at least one of the downlink initial BWP and uplink initial BWP of the target network side device.

[0286] The beam service of the above-mentioned wave position is about to fail, which may be that the position of the network side device moves and is about to be unable to cover the wave position.

[0287] This implementation enables timely switching of the terminal to the target network-side device's initial downlink BWP and initial uplink BWP when the terminal's beam position is about to expire, ensuring service transmission. For example, a source satellite requests new service beam resources from a destination satellite via an intersatellite link. The source satellite notifies the terminal served by the source satellite of the destination satellite's configured initial downlink BWP and initial uplink BWP. The network notifies the terminals within the source beam via group DCI information or RRC reconfiguration signaling to prepare for a BWP-based group handover, potentially performing simultaneous uplink and downlink BWP handover.

[0288] In the embodiment of the present invention, a service beam can serve terminals in one or multiple wavebands. Depending on the service requirements of the terminals in each waveband, each waveband can use the same BWP or different BWPs.

[0289] In this embodiment of the present invention, a network device allocates time-frequency resources for a control beam to a terminal, and the network device allocates time-frequency resources for a service beam to the terminal. This allocation of both control beam and service beam time-frequency resources to the terminal allows the terminal to switch from a control beam to a service beam, improving beam resource management.

[0290] See Figure 4 , Figure 4 is a flow chart of a beam switching method provided by an embodiment of the present invention, such as Figure 4 As shown, the following steps are included:

[0291] 401. The terminal obtains time-frequency resources allocated by the network side device for controlling the beam;

[0292] 402. The terminal obtains the time-frequency resources of the service beam allocated by the network-side device;

[0293] 403. The terminal switches from the control beam to the service beam.

[0294] The terminal switching from the control beam to the service beam may be switching from the time-frequency resources of the control beam to the time-frequency resources of the service beam.

[0295] Optionally, the terminal obtains the time-frequency resources allocated by the network-side device to the control beam, including:

[0296] The terminal receives a broadcast message sent by the network side device, where the broadcast message includes the time-frequency resources of the control beam.

[0297] The terminal may complete downlink initial access in the downlink initial BWP of the control beam or the service beam, and read the above broadcast message.

[0298] Optionally, the broadcast message further includes at least one of the following:

[0299] Orbital altitude of broadcasting satellite;

[0300] The location information of the SSB synchronization grid of the service beam;

[0301] The mapping relationship between the wave position and the preamble;

[0302] Wave position dwell time;

[0303] number of waves;

[0304] The scanning period of the control beam.

[0305] Optionally, the time-frequency resources of the control beam include:

[0306] Random access time-frequency resources of the control beam;

[0307] The random access time-frequency resources of the control beam include:

[0308] The time domain position, the uplink initial bandwidth part BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0309] Optionally, the terminal sends a preamble on a random access time-frequency resource;

[0310] or

[0311] The terminal reports terminal capabilities while sending a preamble on the random access time-frequency resource.

[0312] Optionally, the terminal obtains the time-frequency resources of the service beam allocated by the network-side device, including:

[0313] The terminal receives a random access response sent by the network side device on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam.

[0314] Optionally, the terminal switching from the control beam to the service beam includes:

[0315] The terminal sends an RRC connection request to the network side device when switching from the control beam to the initial BWP of the service beam; or

[0316] The terminal switches from the control beam to the activated BWP of the service beam and sends an RRC connection request to the network side device.

[0317] Optionally, when the terminal switches from the control beam to the initial BWP of the service beam, the time-frequency resources of the service beam include:

[0318] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access;

[0319] or,

[0320] In a case where the terminal switches from the control beam to the activated BWP of the service beam, the time-frequency resources of the service beam include:

[0321] The time domain position, the uplink activated BWP of the service beam and the frequency resources allocated in the uplink activated BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access.

[0322] Optionally, when the terminal recovers from a failed handover from the control beam to the service beam, the terminal initiates a non-contention random access using the service beam-specific preamble.

[0323] Optionally, the time-frequency resources of the control beam include:

[0324] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0325] or

[0326] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0327] The terminal obtains the time-frequency resources of the service beam allocated by the network-side device, including:

[0328] The terminal receives a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtains the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access;

[0329] The terminal switches from the control beam to the service beam, including:

[0330] The terminal switches from the control beam to the service beam to establish an RRC connection.

[0331] Optionally, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using a preamble dedicated to the service beam.

[0332] Optionally, the method further includes:

[0333] The terminal sends terminal capability information to the network side device;

[0334] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0335] Optionally, the method further includes:

[0336] The terminal sends an RRC connection request and terminal capability information to the network side device on the control beam time-frequency resource.

[0337] Optionally, the method further includes:

[0338] In a case where the terminal fails to switch from the control beam to the service beam, the terminal initiates a non-contention random access to the network side device using a preamble dedicated to the service beam at the location of the random access resource of the service beam; or

[0339] In the case that the terminal fails to switch from the control beam to the service beam, the terminal detects the synchronization signal block SSB of the service beam at the position of the SSB synchronization grid, and initiates initial access to the network side device in the service beam based on the synchronization signal block and random access resources, wherein the position of the SSB synchronization grid is configured to the terminal by the network side device.

[0340] Optionally, the service beam configuration includes at least one of the following:

[0341] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0342] Each BWP is equipped with a measurement signal.

[0343] Optionally, the method further includes:

[0344] The terminal receives a notification sent by the network-side device, where the notification is used to notify the terminal to perform measurement on a specified BWP;

[0345] The terminal feeds back to the network-side device the measurement quantity measured by the terminal on the designated BWP.

[0346] Optionally, the measurement signal includes at least one of the following:

[0347] SSB and channel state information reference signal CSI-RS.

[0348] It should be noted that this embodiment is as Figure 3 The implementation of the corresponding terminal in the embodiment shown in the figure can be found in the specific implementation of the terminal. Figure 3 In order to avoid duplication, the relevant descriptions of the embodiment shown will not be repeated in this embodiment, and the same beneficial effects can still be achieved.

[0349] See Figure 5 , Figure 5 FIG5 is a structural diagram of a network side device provided by an embodiment of the present invention, including a memory 520, a transceiver 500, and a processor 510.

[0350] The memory 520 is used to store computer programs; the transceiver 500 is used to send and receive data under the control of the processor 510; the processor 510 is used to read the computer program in the memory 520 and perform the following operations:

[0351] Allocate time-frequency resources for controlling beams to terminals;

[0352] Allocate time-frequency resources of a service beam to the terminal.

[0353] Among them, Figure 5 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 510 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 500 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 530 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0354] The processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

[0355] Optionally, the processor 510 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0356] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present invention according to the obtained executable instructions. The processor and the memory can also be physically separated.

[0357] Optionally, allocating time-frequency resources of the control beam to the terminal includes:

[0358] A broadcast message is sent to the terminal, where the broadcast message includes the time-frequency resources of the control beam.

[0359] Optionally, the broadcast message further includes at least one of the following:

[0360] Orbital altitude of broadcasting satellite;

[0361] The location information of the synchronization signal block (SSB) synchronization grid of the service beam;

[0362] The mapping relationship between the wave position and the preamble;

[0363] Wave position dwell time;

[0364] number of waves;

[0365] The scanning period of the control beam.

[0366] Optionally, the time-frequency resources of the control beam include:

[0367] Random access time-frequency resources of the control beam;

[0368] The random access time-frequency resources of the control beam include:

[0369] The time domain position, the uplink initial bandwidth part BWP of the control beam and the frequency resources allocated in the uplink initial BWP of the control beam.

[0370] Optionally, allocating time-frequency resources of a service beam to the terminal includes:

[0371] On the downlink initial BWP of the control beam, a random access response is sent to the terminal, where the random access response is used to allocate time-frequency resources of the service beam.

[0372] Optionally, the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or

[0373] The time-frequency resources of the service beam are used for the terminal to switch from the control beam to the activated BWP of the service beam.

[0374] Optionally, when the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include:

[0375] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access;

[0376] or,

[0377] In a case where the time-frequency resources of the service beam are used for an activated BWP for the terminal to switch from the control beam to the service beam, the time-frequency resources of the service beam include:

[0378] The time domain position, the uplink activated BWP of the service beam and the frequency resources allocated in the uplink activated BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access.

[0379] Optionally, the time-frequency resources of the control beam include:

[0380] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0381] or

[0382] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0383] The allocating the time-frequency resources of the service beam to the terminal includes:

[0384] A contention resolution message and an RRC connection establishment message are sent to the terminal through the control beam. The network side allocates the time-frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, as well as the preamble and random access time-frequency resources exclusive to the service beam for non-contention random access.

[0385] Optionally, the processor 510 is further configured to:

[0386] receiving terminal capability information sent by the terminal;

[0387] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0388] Optionally, the processor 510 is further configured to:

[0389] An RRC connection request and terminal capability information sent by the terminal are received on the time-frequency resources of the control beam.

[0390] Optionally, the processor 510 is further configured to:

[0391] In a case where the terminal fails to switch from the control beam to the service beam, the network-side device receives a random access initiated by the terminal at a location of a random access resource of the service beam.

[0392] Optionally, the service beam configuration includes at least one of the following:

[0393] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0394] Each BWP is equipped with a measurement signal.

[0395] Optionally, the processor 510 is further configured to:

[0396] Notify the terminal to make measurements on the specified BWP;

[0397] receiving a measurement quantity fed back by the terminal;

[0398] Whether to perform BWP handover or cell handover is determined according to the measurement amount.

[0399] Optionally, the measurement signal includes at least one of the following:

[0400] SSB and channel state information reference signal CSI-RS.

[0401] Optionally, the service beam serves multiple beam positions in a time-sharing manner, and an uplink activated BWP and a downlink activated BWP configured for each beam position of the service beam are based on at least one of the following configurations:

[0402] Terminal capabilities and service requirements of terminals in each waveband.

[0403] Optionally, the processor 510 is further configured to:

[0404] When the beam service of the wave position where the terminal is located is about to expire, the network side device requests service beam resources from the target network side device and notifies the terminal of at least one of the downlink initial BWP and uplink initial BWP of the target network side device.

[0405] It should be noted here that the above-mentioned network side device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0406] See Figure 6 , Figure 6 This is a structural diagram of a terminal provided by an embodiment of the present invention, such as Figure 6 As shown, it includes a memory 620, a transceiver 600 and a processor 610:

[0407] The memory 620 is used to store computer programs; the transceiver 600 is used to send and receive data under the control of the processor 610; the processor 610 is used to read the computer program in the memory 620 and perform the following operations:

[0408] Obtain the time and frequency resources allocated by the network side device to control the beam;

[0409] Acquire the time-frequency resources of the service beam allocated by the network-side device;

[0410] Switching from the control beam to the service beam.

[0411] Among them, Figure 6In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 610 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 600 may be a plurality of components, namely a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 630 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0412] The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 when performing operations.

[0413] Optionally, the processor 610 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0414] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present invention according to the obtained executable instructions. The processor and the memory can also be physically separated.

[0415] Optionally, the acquiring of time-frequency resources for allocating a control beam by a network-side device includes:

[0416] Receive a broadcast message sent by the network side device, where the broadcast message includes the time-frequency resources of the control beam.

[0417] Optionally, the broadcast message further includes at least one of the following:

[0418] Orbital altitude of broadcasting satellite;

[0419] The location information of the SSB synchronization grid of the service beam;

[0420] The mapping relationship between the wave position and the preamble;

[0421] Wave position dwell time;

[0422] number of waves;

[0423] The scanning period of the control beam.

[0424] Optionally, the time-frequency resources of the control beam include:

[0425] Random access time-frequency resources of the control beam;

[0426] The random access time-frequency resources of the control beam include:

[0427] The time domain position, the uplink initial bandwidth part BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0428] Optionally, the terminal sends a preamble on a random access time-frequency resource;

[0429] or

[0430] The terminal reports terminal capabilities while sending a preamble on the random access time-frequency resource.

[0431] Optionally, the acquiring the time-frequency resources of the service beam allocated by the network-side device includes:

[0432] On the downlink initial BWP of the control beam, a random access response sent by the network side device is received, where the random access response is used to allocate time-frequency resources of the service beam.

[0433] Optionally, the switching from the control beam to the service beam includes:

[0434] An initial BWP switching from the control beam to the service beam sends an RRC connection request to the network side device; or

[0435] The activated BWP that switches from the control beam to the service beam sends an RRC connection request to the network side device.

[0436] Optionally, when the terminal switches from the control beam to the initial BWP of the service beam, the time-frequency resources of the service beam include:

[0437] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a handover failure from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam;

[0438] or,

[0439] In a case where the terminal switches from the control beam to the activated BWP of the service beam, the time-frequency resources of the service beam include:

[0440] The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal uses the preamble dedicated to the service beam to initiate non-contention random access.

[0441] Optionally, the time-frequency resources of the control beam include:

[0442] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0443] or

[0444] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0445] The acquiring the time-frequency resources of the service beam allocated by the network side device includes:

[0446] Receiving a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtaining the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a switching failure from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam;

[0447] The switching from the control beam to the service beam includes:

[0448] Switch from the control beam to the service beam to establish an RRC connection.

[0449] Optionally, the time-frequency resources of the service beam include:

[0450] A service beam time-frequency resource for sending an RRC connection request, wherein the service beam time-frequency resource for sending an RRC connection request includes: a time domain position, an uplink activation BWP of the service beam, and a frequency resource allocated in the uplink activation BWP of the service beam;

[0451] or

[0452] Random access resources specifically allocated for service beams, the random access resources including: random access preamble, random access time domain position, random access frequency domain starting position and random access frequency resource block.

[0453] Optionally, the processor 610 is further configured to:

[0454] Sending terminal capability information to the network side device;

[0455] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0456] Optionally, the processor 610 is further configured to:

[0457] Send an RRC connection request and terminal capability information to the network side device on the control beam time-frequency resource.

[0458] Optionally, the processor 610 is further configured to:

[0459] In the case where the terminal fails to switch from the control beam to the service beam, initiating random access to the network side device using the preamble corresponding to the service beam at the location of the random access resource of the service beam; or

[0460] In the case that the terminal fails to switch from the control beam to the service beam, the synchronization signal block SSB of the service beam is detected at the position of the SSB synchronization grid, and initial access is initiated to the network side device in the service beam based on the synchronization signal block and the random access resource, wherein the position of the SSB synchronization grid is configured to the terminal by the network side device.

[0461] Optionally, the service beam configuration includes at least one of the following:

[0462] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0463] Each BWP is equipped with a measurement signal.

[0464] Optionally, the processor 610 is further configured to:

[0465] receiving a notification sent by the network-side device, wherein the notification is used to notify the terminal to perform measurement on a specified BWP;

[0466] Feedback the measurement quantity measured by the terminal on the designated BWP to the network side device.

[0467] Optionally, the measurement signal includes at least one of the following:

[0468] SSB and channel state information reference signal CSI-RS.

[0469] It should be noted here that the above-mentioned terminal provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0470] See Figure 7 , Figure 7 This is a structural diagram of another network side device provided by an embodiment of the present invention, such as Figure 7 As shown, the network side device 700 includes:

[0471] A first allocating unit 701 is configured to allocate time-frequency resources of a control beam to a terminal;

[0472] The second allocating unit 702 is configured to allocate time-frequency resources of the service beam to the terminal.

[0473] Optionally, the first allocation unit 701 is used to send a broadcast message to the terminal, where the broadcast message includes the time-frequency resources of the control beam.

[0474] Optionally, the broadcast message further includes at least one of the following:

[0475] Orbital altitude of broadcasting satellite;

[0476] The location information of the synchronization signal block (SSB) synchronization grid of the service beam;

[0477] The mapping relationship between the wave position and the preamble;

[0478] Wave position dwell time;

[0479] number of waves;

[0480] The scanning period of the control beam.

[0481] Optionally, the time-frequency resources of the control beam include:

[0482] Random access time-frequency resources of the control beam;

[0483] The random access time-frequency resources of the control beam include:

[0484] The time domain position, the uplink initial bandwidth part BWP of the control beam and the frequency resources allocated in the uplink initial BWP of the control beam.

[0485] Optionally, the second allocation unit 702 is configured to send a random access response to the terminal on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam.

[0486] Optionally, the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or

[0487] The time-frequency resources of the service beam are used for the terminal to switch from the control beam to the activated BWP of the service beam.

[0488] Optionally, when the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include:

[0489] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access;

[0490] or,

[0491] In a case where the time-frequency resources of the service beam are used for an activated BWP for the terminal to switch from the control beam to the service beam, the time-frequency resources of the service beam include:

[0492] The time domain position, the uplink activated BWP of the service beam and the frequency resources allocated in the uplink activated BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access.

[0493] Optionally, the time-frequency resources of the control beam include:

[0494] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0495] or

[0496] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0497] The second allocation unit 702 is used to send a contention resolution message and an RRC connection establishment message to the terminal through the control beam. The network side allocates the time-frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, and the preamble and random access time-frequency resources exclusive to the service beam for non-contention random access.

[0498] Optionally, the device further includes: a receiving unit.

[0499] Optionally, the receiving unit is configured to receive terminal capability information sent by the terminal;

[0500] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0501] Optionally, the receiving unit is used to receive the RRC connection request and terminal capability information sent by the terminal on the time-frequency resources of the control beam.

[0502] Optionally, the receiving unit is configured to, when the terminal fails to switch from the control beam to the service beam, receive, by the network side device, a non-contention random access initiated by the terminal at the location of the random access resource of the service beam.

[0503] Optionally, the service beam configuration includes at least one of the following:

[0504] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0505] Each BWP is equipped with a measurement signal.

[0506] Optionally, the device further includes:

[0507] A first notification unit is used to notify the terminal to perform measurement on a specified BWP;

[0508] The receiving unit is configured to receive the measurement value fed back by the terminal;

[0509] A decision unit is configured to decide whether to perform BWP handover or cell handover according to the measurement amount.

[0510] Optionally, the measurement signal includes at least one of the following:

[0511] SSB and channel state information reference signal CSI-RS.

[0512] Optionally, the service beam serves multiple beam positions in a time-sharing manner, and an uplink activated BWP and a downlink activated BWP configured for each beam position of the service beam are based on at least one of the following configurations:

[0513] Terminal capabilities and service requirements of terminals in each waveband.

[0514] Optionally, the device further includes:

[0515] The second notification unit is used to request service beam resources from the target network side device when the beam service of the wave position where the terminal is located is about to expire, and notify the terminal of at least one of the downlink initial BWP and uplink initial BWP of the target network side device.

[0516] It should be noted here that the above-mentioned network side device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0517] See Figure 8 , Figure 8 is a structural diagram of another terminal provided by an embodiment of the present invention, such as Figure 8 As shown, terminal 800 includes:

[0518] A first acquiring unit 801 is configured to acquire time-frequency resources allocated by a network-side device to a control beam;

[0519] A second acquiring unit 802 is configured to acquire the time-frequency resources of the service beam allocated by the network side device;

[0520] The switching unit 803 is configured to switch from the control beam to the service beam.

[0521] Optionally, the first acquisition unit 801 is used to receive a broadcast message sent by the network side device, where the broadcast message includes the time-frequency resources of the control beam.

[0522] Optionally, the broadcast message further includes at least one of the following:

[0523] Orbital altitude of broadcasting satellite;

[0524] The location information of the SSB synchronization grid of the service beam;

[0525] The mapping relationship between the wave position and the preamble;

[0526] Wave position dwell time;

[0527] number of waves;

[0528] The scanning period of the control beam.

[0529] Optionally, the time-frequency resources of the control beam include:

[0530] Random access time-frequency resources of the control beam;

[0531] The random access time-frequency resources of the control beam include:

[0532] The time domain position, the uplink initial bandwidth part BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0533] Optionally, the terminal sends a preamble on a random access time-frequency resource;

[0534] or

[0535] The terminal reports terminal capabilities while sending a preamble on the random access time-frequency resource.

[0536] Optionally, the second acquisition unit 802 is used to receive a random access response sent by the network side device on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam.

[0537] Optionally, the switching unit 803 is configured to send an RRC connection request to the network side device by switching from the control beam to the initial BWP of the service beam; or

[0538] The switching unit 803 is configured to switch from the control beam to the activated BWP of the service beam and send an RRC connection request to the network side device.

[0539] Optionally, when the terminal switches from the control beam to the initial BWP of the service beam, the time-frequency resources of the service beam include:

[0540] The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a handover failure from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam;

[0541] or,

[0542] In a case where the terminal switches from the control beam to the activated BWP of the service beam, the time-frequency resources of the service beam include:

[0543] The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal uses the preamble dedicated to the service beam to initiate non-contention random access.

[0544] Optionally, the time-frequency resources of the control beam include:

[0545] The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam;

[0546] or

[0547] The time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam;

[0548] The second acquisition unit 802 is configured to receive a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtain the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a switching failure from the control beam to the service beam, the terminal uses the preamble dedicated to the service beam to initiate non-contention random access;

[0549] The switching unit 802 is configured to switch from the control beam to the service beam to establish an RRC connection.

[0550] Optionally, the terminal further includes: a sending unit.

[0551] Optionally, the sending unit is configured to send terminal capability information to the network side device;

[0552] Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

[0553] Optionally, the sending unit is used to send an RRC connection request and terminal capability information to the network side device on the control beam time-frequency resources.

[0554] Optionally, the sending unit is configured to, when the terminal fails to switch from the control beam to the service beam, initiate non-contention random access to the network side device by using a preamble dedicated to the service beam at the location of the random access resource of the service beam; or

[0555] The sending unit is used to detect the synchronization signal block SSB of the service beam at the position of the SSB synchronization grid when the terminal fails to switch from the control beam to the service beam, and initiate initial access to the network side device in the service beam based on the synchronization signal block and the random access resource, wherein the position of the SSB synchronization grid is configured to the terminal by the network side device.

[0556] Optionally, the service beam configuration includes at least one of the following:

[0557] Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP;

[0558] Each BWP is equipped with a measurement signal.

[0559] Optionally, the terminal further includes:

[0560] a measurement unit, configured to receive a notification sent by the network-side device, wherein the notification is used to notify the terminal to perform measurement on a specified BWP;

[0561] The sending unit is configured to feed back the measurement value measured by the terminal on the designated BWP to the network side device.

[0562] Optionally, the measurement signal includes at least one of the following:

[0563] SSB and channel state information reference signal CSI-RS.

[0564] It should be noted here that the above-mentioned terminal provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0565] It should be noted that the division of units in the embodiments of the present invention is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processing unit, each unit may exist physically as a separate unit, or two or more units may be integrated into a single unit. These integrated units may be implemented in either hardware or software functional units.

[0566] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0567] An embodiment of the present invention also provides a processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam resource allocation method provided by an embodiment of the present invention, or the computer program is used to enable the processor to execute the beam switching method provided by an embodiment of the present invention.

[0568] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASH), solid-state drives (SSDs)), etc.

[0569] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) that contain computer-usable program code.

[0570] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0571] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce an article of manufacture comprising an instruction device that implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0572] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0573] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A beam resource allocation method, characterized in that: include: The network side device allocates time and frequency resources of the control beam to the terminal; The network side device allocates a time-frequency resource of a service beam to the terminal, where the time-frequency resource of the service beam is a time-frequency resource used for the terminal to switch from the control beam to the service beam; The network side device allocates time-frequency resources of the service beam to the terminal, including: The network side device sends a random access response to the terminal on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam; The time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or, the time-frequency resources of the service beam are used for the activation BWP of the terminal switching from the control beam to the service beam; In the case where the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access; or, In the case where the time-frequency resources of the service beam are used for the activation BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access; or, The time-frequency resources of the control beam include: The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam; or, the time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; The network side device allocates time-frequency resources of the service beam to the terminal, including: The network side device sends a contention resolution message and an RRC connection establishment message to the terminal through the control beam, and the network side allocates the time and frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, as well as the preamble and random access time and frequency resources exclusive to the service beam for non-contention random access.

2. The method according to claim 1, characterized in that The network side device allocates time-frequency resources of the control beam to the terminal, including: The network side device sends a broadcast message to the terminal, where the broadcast message includes the time-frequency resources of the control beam.

3. The method according to claim 2, characterized in that The broadcast message also includes at least one of the following: Orbital altitude of broadcast satellite; The location information of the synchronization signal block SSB synchronization grid of the service beam; The mapping relationship between the wave position and the preamble; Wave position dwell time; number of waves; The scanning period of the control beam.

4. The method according to claim 1, characterized in that The time-frequency resources of the control beam include: Random access time-frequency resources of the control beam; The random access time-frequency resources of the control beam include: The time domain position, the uplink initial bandwidth part BWP of the control beam and the frequency resources allocated in the uplink initial BWP of the control beam.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The network side device receives the terminal capability information sent by the terminal; Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

6. The method according to claim 1, characterized in that The method further comprises: The network side device receives the RRC connection request and terminal capability information sent by the terminal on the time-frequency resources of the control beam.

7. The method according to any one of claims 1 to 4, characterized in that The method further comprises: In the case that the terminal fails to switch from the control beam to the service beam, the network side device receives a non-contention random access initiated by the terminal at the location of the random access resource of the service beam.

8. The method according to any one of claims 1 to 4, characterized in that The service beam configuration includes at least one of the following: Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP; Each BWP is equipped with a measurement signal.

9. The method according to claim 8, characterized in that The method further comprises: The network side device notifies the terminal to perform measurement on the specified BWP; The network side device receives the measurement amount fed back by the terminal; The network side device determines whether to perform BWP switching or cell switching according to the measurement amount.

10. The method according to claim 8, characterized in that The measurement signal includes at least one of the following: SSB and channel state information reference signal CSI-RS.

11. The method according to claim 8, characterized in that The service beam serves multiple beam positions in a time-sharing manner, and an uplink activated BWP and a downlink activated BWP configured for each beam position by the service beam are based on at least one of the following configurations: Terminal capabilities and service requirements of terminals in each waveband.

12. The method according to any one of claims 1 to 4, characterized in that The method further comprises: When the beam service of the wave position where the terminal is located is about to expire, the network side device requests service beam resources from the target network side device, and notifies the terminal of at least one of the downlink initial BWP and uplink initial BWP of the target network side device.

13. A beam switching method, characterized in that: include: The terminal obtains the time-frequency resources allocated by the network side device to control the beam; The terminal obtains the time-frequency resources of the service beam allocated by the network side device; The terminal switches from the control beam to the service beam; The terminal obtains the time-frequency resources of the service beam allocated by the network side device, including: The terminal receives, on the downlink initial BWP of the control beam, a random access response sent by the network side device, where the random access response is used to allocate time-frequency resources of the service beam; The terminal switches from the control beam to the service beam, including: The terminal sends an RRC connection request to the network side device when switching from the control beam to the initial BWP of the service beam; or, the terminal sends an RRC connection request to the network side device when switching from the control beam to the activated BWP of the service beam; In the case where the terminal switches from the control beam to the initial BWP of the service beam, the time-frequency resources of the service beam include: time domain position, an uplink initial BWP of a service beam and frequency resources allocated in the uplink initial BWP of the service beam, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a failure in switching from a control beam to a service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; or, In the case where the terminal switches from the control beam to the activated BWP of the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; or, The time-frequency resources of the control beam include: The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam; or, the time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; The terminal obtains the time-frequency resources of the service beam allocated by the network side device, including: The terminal receives a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtains the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; The terminal switches from the control beam to the service beam, comprising: The terminal switches from the control beam to the service beam to establish an RRC connection.

14. The method according to claim 13, characterized in that The terminal obtains the time-frequency resources allocated by the network side device to control the beam, including: The terminal receives a broadcast message sent by the network side device, where the broadcast message includes the time-frequency resources of the control beam.

15. The method according to claim 14, characterized in that The broadcast message also includes at least one of the following: Orbital altitude of broadcast satellite; The location information of the SSB synchronization grid of the service beam; The mapping relationship between the wave position and the preamble; Wave position dwell time; number of waves; The scanning period of the control beam.

16. The method according to claim 13, characterized in that The time-frequency resources of the control beam include: Random access time-frequency resources of the control beam; The random access time-frequency resources of the control beam include: The time domain position, the uplink initial bandwidth part BWP of the control beam and the frequency resources allocated in the uplink initial BWP of the control beam.

17. The method according to claim 16, characterized in that The terminal sends a preamble on a random access time-frequency resource; or The terminal reports the terminal capability while sending the preamble on the random access time-frequency resource.

18. The method according to any one of claims 13 to 17, characterized in that The method further comprises: The terminal sends terminal capability information to the network side device; Among them, at least one of the time-frequency resources of the control beam and the time-frequency resources of the service beam corresponds to the terminal capability information.

19. The method of claim 13, wherein: The method further comprises: The terminal sends an RRC connection request and terminal capability information to the network side device on the control beam time-frequency resources.

20. The method according to any one of claims 13 to 17, characterized in that The method further comprises: In the case where the terminal fails to switch from the control beam to the service beam, the terminal initiates a non-contention random access to the network side device using a preamble dedicated to the service beam at the location of the random access resource of the service beam; or In the case that the terminal fails to switch from the control beam to the service beam, the terminal detects the synchronization signal block SSB of the service beam at the position of the SSB synchronization grid, and initiates initial access to the network side device in the service beam based on the synchronization signal block and the random access resource, wherein the position of the SSB synchronization grid is configured to the terminal by the network side device.

21. The method according to any one of claims 13 to 17, characterized in that The service beam configuration includes at least one of the following: Uplink initial BWP, downlink initial BWP, uplink activation BWP, downlink activation BWP; Each BWP is equipped with a measurement signal.

22. The method according to claim 21, characterized in that The method further comprises: The terminal receives a notification sent by the network side device, where the notification is used to notify the terminal to perform measurement on a specified BWP; The terminal feeds back to the network side device the measurement amount measured by the terminal on the designated BWP.

23. The method of claim 21, wherein: The measurement signal includes at least one of the following: SSB and channel state information reference signal CSI-RS.

24. A network side device, characterized in that: include: A memory, a transceiver, and a processor, wherein: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Allocating time-frequency resources of the control beam to the terminal; Allocating a time-frequency resource of a service beam to the terminal, where the time-frequency resource of the service beam is a time-frequency resource used for the terminal to switch from the control beam to the service beam; The allocating the time-frequency resources of the service beam to the terminal includes: Sending a random access response to the terminal on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam; The time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or, the time-frequency resources of the service beam are used for the activation BWP of the terminal switching from the control beam to the service beam; In the case where the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access; or, In the case where the time-frequency resources of the service beam are used for the activation BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access; or, The time-frequency resources of the control beam include: The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam; or, the time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; The allocating the time-frequency resources of the service beam to the terminal includes: A contention resolution message and an RRC connection establishment message are sent to the terminal through the control beam, and the network side allocates the time and frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, as well as the preamble and random access time and frequency resources exclusive to the service beam for non-contention random access.

25. A terminal, characterized in that: include: A memory, a transceiver, and a processor, wherein: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Obtaining the time and frequency resources for allocating control beams by the network side device; Acquire the time-frequency resources of the service beam allocated by the network side device; Switching from the control beam to the service beam; The acquiring the time-frequency resources of the service beam allocated by the network side device includes: receiving, on the downlink initial BWP of the control beam, a random access response sent by the network side device, where the random access response is used to allocate time-frequency resources of the service beam; The switching from the control beam to the service beam comprises: An initial BWP switched from the control beam to the service beam sends an RRC connection request to the network side device; or an activation BWP switched from the control beam to the service beam sends an RRC connection request to the network side device; In the case where the terminal switches from the control beam to the initial BWP of the service beam, the time-frequency resources of the service beam include: time domain position, an uplink initial BWP of a service beam and frequency resources allocated in the uplink initial BWP of the service beam, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a failure in switching from a control beam to a service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; or, In the case where the terminal switches from the control beam to the activated BWP of the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; or, The time-frequency resources of the control beam include: The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam; or, the time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; The acquiring the time-frequency resources of the service beam allocated by the network side device includes: Receiving a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtaining the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; The switching from the control beam to the service beam comprises: Switch from the control beam to the service beam to establish an RRC connection.

26. A network side device, characterized in that: include: A first allocation unit, configured to allocate time-frequency resources of a control beam to a terminal; A second allocation unit, configured to allocate a time-frequency resource of a service beam to the terminal, where the time-frequency resource of the service beam is a time-frequency resource used for the terminal to switch from the control beam to the service beam; The second allocation unit is used for: Sending a random access response to the terminal on the downlink initial BWP of the control beam, where the random access response is used to allocate time-frequency resources of the service beam; The time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam; or, the time-frequency resources of the service beam are used for the activation BWP of the terminal switching from the control beam to the service beam; In the case where the time-frequency resources of the service beam are used for the initial BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink initial BWP of the service beam and the frequency resources allocated in the uplink initial BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access; or, In the case where the time-frequency resources of the service beam are used for the activation BWP of the terminal switching from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access; or, The time-frequency resources of the control beam include: The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam; or, the time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; The second allocation unit is used for: A contention resolution message and an RRC connection establishment message are sent to the terminal through the control beam, and the network side allocates the time and frequency resources of the service beam required for the RRC connection establishment completion signaling through DCI signaling, as well as the preamble and random access time and frequency resources exclusive to the service beam for non-contention random access.

27. A terminal, characterized in that: include: A first acquisition unit is used for the terminal to acquire the time-frequency resources allocated by the network side device to control the beam; A second acquisition unit, used to acquire the time-frequency resources of the service beam allocated by the network side device; A switching unit, configured to switch from the control beam to the service beam; The second acquisition unit is used for: receiving, on the downlink initial BWP of the control beam, a random access response sent by the network side device, where the random access response is used to allocate time-frequency resources of the service beam; The switching unit is used for: An initial BWP switched from the control beam to the service beam sends an RRC connection request to the network side device; or an activation BWP switched from the control beam to the service beam sends an RRC connection request to the network side device; In the case of an initial BWP of switching from the control beam to the service beam, the time-frequency resources of the service beam include: time domain position, an uplink initial BWP of a service beam and frequency resources allocated in the uplink initial BWP of the service beam, and a preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a failure in switching from a control beam to a service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; or, In case of an activated BWP switched from the control beam to the service beam, the time-frequency resources of the service beam include: The time domain position, the uplink activation BWP of the service beam and the frequency resources allocated in the uplink activation BWP of the service beam, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; or, The time-frequency resources of the control beam include: The time domain position, the uplink initial BWP of the control beam, and the frequency resources allocated in the uplink initial BWP of the control beam; or, the time domain position, the downlink initial BWP of the control beam, and the frequency resources allocated in the downlink initial BWP of the control beam; The second acquisition unit is used for: Receiving a contention resolution message and an RRC connection establishment message sent by the network side device through the control beam, and obtaining the time-frequency resources of the service beam required for the RRC connection establishment completion signaling allocated by the network side device through DCI signaling, and the preamble and random access time-frequency resources dedicated to the service beam for non-contention random access, wherein, when the terminal recovers from a failure in switching from the control beam to the service beam, the terminal initiates non-contention random access using the preamble dedicated to the service beam; The switching unit is used for: Switch from the control beam to the service beam to establish an RRC connection.

28. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam resource allocation method described in any one of claims 1 to 12, or the computer program is used to enable the processor to execute the beam switching method described in any one of claims 13 to 23.

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