WO2021190278A1 - Procédé et appareil de demande de service - Google Patents

Procédé et appareil de demande de service Download PDF

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Publication number
WO2021190278A1
WO2021190278A1 PCT/CN2021/079313 CN2021079313W WO2021190278A1 WO 2021190278 A1 WO2021190278 A1 WO 2021190278A1 CN 2021079313 W CN2021079313 W CN 2021079313W WO 2021190278 A1 WO2021190278 A1 WO 2021190278A1
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Prior art keywords
message
service request
terminal device
service
network device
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PCT/CN2021/079313
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English (en)
Chinese (zh)
Inventor
韩立锋
顾祥新
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展讯通信（上海）有限公司
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Publication of WO2021190278A1 publication Critical patent/WO2021190278A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of mobile communication technology, and in particular to a method and device for requesting a service.
  • 5G 5th Generation Cellular Mobile Communication System
  • 5G also known as New Radio, New Air Interface, or NR for short
  • UE user equipment
  • RRC Radio Resource Control
  • a user equipment In practical applications, in order to initiate a corresponding service, a user equipment (User Equipment, UE) needs to first send a corresponding access request (such as a radio resource control connection request) to the base station corresponding to the cell where it resides. After receiving the random access request sent by the UE, the base station establishes a radio resource control (Radio Resource Control, RRC) connection with the UE through the corresponding signaling interaction process, and then the UE accesses the network where the cell where it resides is located. Complete the corresponding business through the accessed network.
  • RRC Radio Resource Control
  • the embodiments of the present application provide a service request method and device, which can meet the service requirements of terminal equipment in different RRC states and save wireless resources of the network equipment.
  • an embodiment of the present application provides a service request method, and the method includes:
  • the terminal device sends a first message to the network device, the first message carries or indicates service request information, the service request information is used to request the network device to send service data, and the first message is used for random access process.
  • an embodiment of the present application provides a service request method, and the method includes:
  • the network device receives a first message from a terminal device, the first message carries service request information, the service request information is used to request the network device to send service data, and the first message is used in a random access process .
  • an embodiment of the present application provides an apparatus for requesting a service, and the apparatus includes:
  • the sending unit is configured to send a first message from a terminal device to a network device, where the first message carries or indicates service request information, and the service request information is used to request the network device to send service data, the first message Used for random access procedures.
  • an embodiment of the present application provides an apparatus for requesting a service, and the apparatus includes:
  • the receiving unit is configured to receive a first message from a terminal device by a network device, the first message carrying or indicating service request information, the service request information being used to request the network device to send service data, the first The message is used in the random access procedure.
  • an embodiment of the present application provides an electronic device, the terminal device includes a processor, a memory, a communication interface, and one or more programs, the one or more programs are stored in the memory, and It is configured to be executed by the processor, and the program includes instructions for executing part or all of the steps described in the method described in the first aspect or the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium that stores a computer program for electronic data exchange, wherein the computer program causes a computer to execute the first aspect or the second aspect described above. Part or all of the steps described in the method described in the aspect.
  • an embodiment of the present application provides a computer program product, wherein the above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the above-mentioned computer program is operable to cause a computer to execute as implemented in this application. Examples are the parts described in the method described in the first aspect or the second aspect.
  • the computer program product may be a software installation package.
  • the terminal device sends a first message to the network device, the first message carries or indicates service request information, and the service request information is used to request the network device to send service data ,
  • the first message is used for a random access procedure.
  • the terminal equipment can carry or indicate the service request information in the message of the random access process, so that the network equipment can consider the service requirements of the terminal equipment in the RRC idle state and the RRC inactive state, thereby meeting the service requirements of the terminal equipment in different RRC states , Which saves wireless resources of network equipment.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a service request method provided by an embodiment of the present application.
  • FIG. 3A is a schematic flowchart of a four-step competitive random access provided by an embodiment of the present application.
  • FIG. 3B is a schematic flowchart of a two-step competitive random access provided by an embodiment of the present application.
  • FIG. 3C is a schematic flowchart of a four-step non-competitive random access provided by an embodiment of the present application.
  • FIG. 3D is a schematic flowchart of a two-step non-competitive random access provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a four-step competitive random access provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a flow of msg1 initiating a service request according to an embodiment of the present application
  • FIG. 6A is a schematic diagram of another process for initiating a service request by msg1 according to an embodiment of the present application
  • FIG. 6B is a schematic flowchart of a service request initiated by msg3 according to an embodiment of the present application.
  • FIG. 6C is a schematic flowchart of a service request initiated by msgA according to an embodiment of the present application.
  • FIG. 7 is a block diagram of the functional unit composition of a service request apparatus provided by an embodiment of the present application.
  • FIG. 8 is a block diagram of the functional unit composition of another service request apparatus provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • CDMA Global System for Mobile Communication
  • CDMA Code Division Multiple Access
  • Wideband Code Division Wideband Code Division Multiple Access
  • Multiple access WCDMA
  • Wi-MAX Worldwide Interoperability for Microwave Access
  • LTE Long Term Evolution
  • NR New Radio
  • a communication system that integrates multiple communication technologies for example, a communication system that integrates LTE technology and NR technology
  • the embodiments of this application do not do this limited.
  • the technical solutions of the embodiments of the present application are also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a vehicle-to-everything communication architecture, etc.
  • the embodiment of the present application relates to a terminal device.
  • the terminal equipment includes equipment with wireless communication function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, etc.). Satellite class).
  • the terminal device can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, and an industrial control (industrial) terminal device.
  • VR Virtual Reality
  • AR Augmented Reality
  • industrial industrial control
  • Wireless terminal in control), wireless terminal in self-driving (self-driving), wireless terminal in remote medical (remote medical), wireless terminal in smart grid (smart grid), wireless terminal in smart home (smart home) Terminal and so on.
  • the terminal device can also be a handheld device with wireless communication function, a vehicle-mounted device, a wearable device, a computer device or other processing device connected to a wireless modem, a terminal device in the future 5G network, or a future evolution of the public land mobile communication network (Public Land Mobile Network, PLMN for short) terminal equipment, etc.
  • Public Land Mobile Network Public Land Mobile Network
  • terminal equipment can be called different names, such as: user equipment, access terminal, user unit, user station, mobile station, mobile station (Mobile Station, MS), remote station, remote terminal, mobile device, user Terminals, terminals, wireless communication equipment, user agents or user devices, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal) Digital Assistant, PDA), 5G network or terminal equipment in the future evolution network, etc., which are not limited in the embodiment of the present application.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal digital processing
  • 5G network or terminal equipment in the future evolution network etc.
  • the embodiments of the present application relate to network equipment.
  • the network device may be a device used to communicate with a terminal device, including a radio access network (Radio Access Network, RAN) device, a base station controller of the RAN, and a core network side device.
  • the network device may be a base station of the RAN on the access network side in the cellular network, including but not limited to: evolved Node B (evolved Node B, eNB), Radio Network Controller (RNC), Node B ( Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (for example, Home evolved Node B, or Home Node B, HNB), baseband unit (Base Band Unit, BBU), Management Entity (Mobility Management Entity, MME); for another example, the network device may also be a node device in a wireless local area network (Wireless Local Area Network, WLAN), such as an access controller (AC) , Gateway, or WIFI access point (Access Point, AP);
  • the core network involved in the embodiments of the present application may be an evolved packet core network (Evolved Packet Core, EPC), a 5G core network (5G Core Network), or a new type of core network in a future communication system.
  • the 5G core network consists of a set of devices, and implements access and mobility management functions (Access and Mobility Management Function, AMF) for functions such as mobility management, and provides functions such as packet routing and forwarding and QoS (Quality of Service) management.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • Session Management Function Session Management Function
  • EPC can be a mobility management entity (Mobility Management Entity, MME) that provides functions such as mobility management, gateway selection, Serving Gateway (S-GW) that provides functions such as packet forwarding, and PDN Gateway (S-GW) that provides functions such as terminal address allocation and rate control. (P-GW) composition.
  • MME mobility management entity
  • S-GW Serving Gateway
  • S-GW PDN Gateway
  • P-GW PDN Gateway
  • MME Mobility Management Entity
  • MME Mobility Management Entity
  • the core network can include several new network elements to implement data packet forwarding, MBS conference management, QoS management, and transmission mode switching (unicast and multicast/broadcast transmission) Switch between modes) and other functions. Another way is that the function can be implemented by network elements in the existing core network.
  • the embodiment of this application defines the one-way communication link from the access network to the terminal device as the downlink, and the data transmitted on the downlink is the downlink data.
  • the transmission direction of the downlink data is called the downlink direction; and the terminal device to the access
  • the unidirectional communication link of the network is the uplink, and the data transmitted on the uplink is the uplink data, and the transmission direction of the uplink data is called the uplink direction.
  • connection appearing in the embodiments of this application refers to various connection modes such as direct connection or indirect connection to realize communication between devices, which is not limited in the embodiments of this application.
  • At least one refers to one or more, and “multiple” refers to two or more than two.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • first and second are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance.
  • first information and the second information are only for distinguishing different information, but do not indicate the difference in content, priority, sending order, or importance of the two types of information.
  • Random Access (RA) process The random access process is also referred to as a random access channel (Random Access Channel, RACH) process.
  • RACH Random Access Channel
  • the random access process is divided into two types: Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA).
  • CBRA Contention Based Random Access
  • CFRA Contention Free Random Access
  • the network device does not allocate a dedicated preamble to the terminal device. Instead, the terminal device randomly selects the preamble in the preamble pool to initiate random access. There is a risk of resource collision; in non-competitive random access, the network device is The terminal device allocates a dedicated preamble, and the terminal device uses the dedicated preamble to initiate random access, and there is no risk of resource collision.
  • the RRC inactive state In order to meet the new service characteristics and save the power consumption of the terminal equipment, a new RRC state is defined, the RRC inactive state.
  • the suspension or transmission of services is determined by the network elements of the core network.
  • the core network can decide the transmission mode of sending the service according to the number of UEs interested in the service and the radio resources in the RAN.
  • the network equipment only considers the requirements of the UE in the RRC connected state, and does not consider the requirements of the UE in the RRC idle state and the RRC inactive state.
  • this application proposes a service request method.
  • the terminal device carries or indicates service request information in the message of the random access process, taking into account the service of the terminal device in the RRC idle state and the RRC inactive state. Therefore, it meets the service requirements of terminal equipment in different RRC states and saves wireless resources of network equipment.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system includes a network device 110 and a terminal device 120.
  • the network device 110 may also be connected to the core network.
  • the network device 110 may also communicate with an Internet Protocol (IP) network, such as the Internet (Internet), a private IP network, or other data networks.
  • IP Internet Protocol
  • the network device 110 can provide a wireless access service for the terminal device 120, and each network device 110 corresponds to a service coverage area, and the terminal device 120 entering the area can communicate with the network device 110 through wireless signals.
  • the network devices 110 can also communicate with each other.
  • the terminal device 120 sends a first message to the network device 110, the first message carries or indicates service request information, and the service request information is used to request the network device to send service data ,
  • the first message is used for the random access process, and may specifically include msg1, msg3, or msgA;
  • the network device 110 responds to receiving the first message and sends a third message to the terminal device 120, the third message carrying transmission mode information
  • the transmission mode information is used to indicate the transmission mode of the service data, the transmission mode includes unicast, multicast, or broadcast, and the third message specifically includes msg2, msg4, or msgB.
  • the radio resource control RRC state includes: RRC idle state, RRC inactive state or RRC connected state, taking into account the service requirements of terminal equipment in the RRC idle state and in the RRC inactive state. Therefore, by carrying or indicating service request information in the message of the random access process, the network device 110 can perform unicast, multicast, or broadcast service data transmission according to the service requirements of the terminal device 120 in different RRC states, so that: The service requirements of the terminal device 120 are met, and the wireless resources of the network device 110 are saved. It should be noted that the form and quantity of the network device 110 and the terminal device 120 shown in FIG. 1 are only for example, and do not constitute a limitation to the embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a service request method provided by an embodiment of the application. As shown in FIG. 2, the service request method includes the following steps:
  • the terminal device sends a first message to the network device.
  • the first message carries or indicates service request information, the service request information is used to request transmission of service data from the network device, and the first message is used in a random access process.
  • the terminal device when a terminal device initiates a service request, it needs to initiate a random access process and establish an RRC connection.
  • the terminal device in order to consider the service requirements of the terminal device in the RRC idle state and the RRC inactive state, the terminal device can The message in the random access process carries or indicates a service request message to request the network device to send service data.
  • the types of random access include four-step random access (4-step RA) and two-step random access (2-step RA). Since the random access process is divided into two types: competitive random access and non-competitive random access, 4-step RA includes 4-step CBRA and 4-step CFRA, and 2-step RA includes 2-step CBRA and 2-step CFRA. .
  • the 4-step CBRA is divided into four steps, namely msg1: the terminal device selects random access preamble (Random Access Preamble) and physical random access channel (Physical Random Access Channel, PRACH) resources and Use this PRACH resource to send the selected preamble to the network device; msg2: The network device receives the preamble, calculates the timing advance (Time Alignment, TA), and sends a random access response (Random Access Response) to the terminal device, random The access response contains TA information and the uplink scheduling grant (UL grant) for msg3, as well as the temporary C-RNTI (or T-CRNTI) allocated by the network device; msg3: scheduled transmission (scheduled transmission) message, the terminal device is in The uplink transmission is sent on the UL grant specified by msg2, and the content of the uplink transmission of msg3 is different for different random access reasons; msg4: contention resolution message, the terminal device can judge whether the terminal device
  • the 2-step CBRA is divided into two steps, namely msgA and msgB, where msgA includes the preamble in the random access process and the validity of the physical uplink shared channel (PUSCH) Payload, that is, the msgA can include the content in msg1 and msg3; msgB: the response to the msgA, which can include contention resolution messages, back-off instructions, and back-off instructions, that is, the msgB can include the content in msg2 and msg4 .
  • PUSCH physical uplink shared channel
  • the 4-step CFRA is divided into three steps, namely msg0: the network device allocates a dedicated preamble for CFRA and PRACH resources for random access to the terminal device; msg1: the terminal device according to msg0 Instruct, send the specified dedicated preamble to the network device on the specified PRACH resource; msg2: the network device sends a random access response to the terminal device, the random access response contains TA information and UL grant for subsequent uplink transmission resource allocation.
  • the 2-step CFRA is divided into three steps, namely msg0, msgA, and msgB, where msgA includes the dedicated preamble designated by msg0 and the PUSCH payload, and msgB includes the random access response.
  • the first message may include: msg1, msg3, or msgA.
  • the above msg1 may belong to 4-step CBRA or 4-step CFRA; the above msgA may belong to 2-step CBRA or 2-step CFRA, and the above msg3 may belong to 4-step CBRA.
  • the first message when the terminal device uses 4-step CBRA, the first message may be msg1 or msg3; when the terminal device uses 4-step CFRA, the first message may be msg1; when the terminal device uses 2-step CBRA or 2- In step CFRA, the first message can be msgA.
  • the first message may include a control part (for example, the preamble in msg1) and a data part (for example, a radio resource control message), and the first message may carry service request information to initiate a service request, and the service request information may carry In the data section.
  • a control part for example, the preamble in msg1
  • a data part for example, a radio resource control message
  • the first message may indicate service request information
  • the terminal device may indicate different service request information through msg1, msg3, and msgA, or the terminal device may indicate the service through the mapping relationship between the resource of the first message and the service identifier.
  • Request information For example, suppose the terminal device initiates a request for service A to the network device, the terminal device can send the preamble on the PRACH RO resource 1 corresponding to service A through the mapping relationship between service A and preamble A and/or PRACH RO resource 1. A to instruct the terminal device to request service A from the network device.
  • the first message includes one or more of the service request information.
  • the msg3 and the msgA can be used to transmit uplink data, and the size of the data part thereof can carry multiple service request information, so at least one service request information can be included in the msg3 and msgA.
  • the terminal device selects the first message according to the type of random access and/or the quantity of the service request information.
  • the terminal device selecting the first message according to the type of random access and/or the quantity of the service request information includes:
  • the first message is the msg1 or the msg3;
  • the first message is the msg3;
  • the type of random access is the 2- step RA, and/or in the case where the quantity of the service request information is one or more, the first message is the msgA.
  • the first message when the number of service request information is one, the first message can be msg1, msg3, or msgA; when the number of service request information is one, and the type of random access is the aforementioned 4-step RA below, the first message may be msg1 or msg3; when the number of service request information is one and the type of random access is the 2-step RA, the first message may be msgA. When the number of service request information is multiple, the first message can be msg3 or msgA; when the number of service request information is multiple, and the type of random access is the 4-step RA, the first message can be msg3 or msgA. One message may be msg3; when the number of service request information is multiple and the type of random access is the 2-step RA, the first message may be msgA.
  • the terminal device when the terminal device fails to initiate a service request through msg1, the terminal device can select msg3 or msgA according to the random access type to initiate the corresponding service request again, for example, the requested service is still not detected in the next modification period
  • the terminal device selects msg3 to initiate the corresponding service request.
  • the service request information includes at least one of the following: a service identifier, time information for receiving the service data, and geographic location information for receiving the service data.
  • the service identifier is a unique identifier of the type of service requested by the terminal device, which may be one or more.
  • the service identification indicates that the information sent by the terminal device this time is information for requesting the network device to send the service, rather than information for other purposes.
  • the foregoing time information for receiving the service data may include at least one of a start time for receiving the service data, a time period for receiving the service data, and a time length for receiving the service data.
  • the geographic location information for receiving the service data may include a cell list (cell list), a TA list, a list of beams in the current serving cell and/or neighboring cells, and the distance between the terminal device and the current serving cell. At least one item.
  • the service request information may also include a terminal device identification, which may be used to indicate the identification information of the terminal device.
  • the terminal device identification may be a user ID, S-TMSI, C-RNTI, Temp-C-RNTI or random value.
  • the terminal device determines the first message according to the mapping relationship between the resource of the first message and the service identifier A resource for news.
  • the network equipment will give the terminal equipment the available preamble and PRACH transmission time (Transmission Occasion, RO) resources, and the terminal equipment will select the preamble and PRACH RO used by this RA according to certain rules. resource.
  • the network equipment will configure the preamble and PUSCH resources for the terminal equipment to send the payload in msgA, where the position of the PUSCH resource may have a certain mapping relationship with the preamble and/or PRACH RO resources.
  • the terminal device requests a multicast or broadcast service by sending msg1, where the terminal device can request the service corresponding to the resource used by the msg1 through the preamble and/or PRACH RO resource used in the RA process.
  • the terminal device wants to receive service A from the network device, the terminal device can initiate a multicast or broadcast service request to the network device.
  • the terminal requests multicast/broadcast services by sending msg1.
  • the terminal device selects preamble A to send when sending msg1, that is, the terminal device uses the preamble A sends msg1 to indicate to the network device that the terminal device wants to receive service A, and the PRACH RO resource in this process can be selected according to other rules. If there is a mapping relationship between service A and PRACH RO resource 1, in the process of sending msg1, the terminal device selects PRACH RO resource 1 to send the preamble, that is, sends the preamble through the position of PRACH RO resource 1 to indicate to the network device that the terminal device wants To receive service A, the preamble sent in the process can be selected according to other rules.
  • the terminal device chooses to send preamble A at the position of PRACH RO resource 1 in the process of sending msg1, that is, by sending the preamble at the position of PRACH RO resource 1
  • the code A is used to indicate the network equipment that the terminal equipment wants to receive service A.
  • the network device can determine the resource of the beam according to the resource of the first message sent by the terminal device in the RA process, so that the network device can send service data according to the beam direction requested by the terminal device, thereby saving wireless resources .
  • the method further includes: the terminal device receives a second message from the network device, where the second message is used to indicate the mapping relationship.
  • the mapping relationship between the service identifier and the preamble and/or the PRACH RO resource may be configured by the network device.
  • the terminal device may receive the information of the mapping relationship between the service identifier and the preamble and/or the PRACH RO resource through the second message.
  • the second message may include a system message, an RRC message, a multimedia access control ((Medium Access Control, MAC) control element (CE) or a MAC service data unit (Service Data Unit, SDU).
  • the network device may not need to complete the non-access (Non-Access Stratum, NAS) layer connection establishment for the terminal device, and the network device can pass the existing RRC message in this RA process.
  • the message carries the mapping relationship information to configure the mapping relationship between the service identifier and the preamble and/or the PRACH RO resource. It can also be carried in the RRC message type in another RA process, which is not the case in the embodiment of this application. Limitation.
  • the mapping relationship can be sent in the uplink resource allocated by the network device by using an agreed logical channel identification (logical channel identification, LCID).
  • the service type can be represented by a unique service ID
  • the unique service ID can be at least one of a service ID (Identity), a public land mobile network (Public Land Mobile Network, PLMN) ID, and a session (session) ID.
  • a service ID Identity
  • PLMN Public Land Mobile Network
  • session ID One item.
  • mapping relationship between the resource of the first message and the service identifier may also be defined by a protocol, and the terminal device may select the resource of the first message according to the requested service according to the mapping relationship defined in the protocol.
  • the radio resource control RRC state of the terminal device includes: an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the terminal device can be in an idle state, an inactive state, or a connected state when initiating a service request.
  • the terminal device sends the first message in the current serving cell or the neighboring serving cell, and the neighboring serving cell includes one or more.
  • the terminal equipment in different RRC states can send a first message in any one of the multiple serving cells to initiate a service request. Including the current serving cell and/or neighboring serving cells.
  • the terminal device when a terminal device in an idle or inactive state resides in serving cell 1, the terminal device can read the system message, RRC message, MAC CE or MAC SDU of serving cell 1 to obtain service A in serving cell 1. Mapping relationship with RA resources (for example, preamble index carrying service request message and/or PRACH RO resource), the terminal device initiates the RA process on the RA resource corresponding to the requested service, and requests the service in the serving cell 1 The terminal device can also read the message of the serving cell 2 to obtain the mapping relationship between the service A and the RA resource in the serving cell 2.
  • RA resources for example, preamble index carrying service request message and/or PRACH RO resource
  • the terminal device initiates the RA process on the RA resource corresponding to the requested service in the serving cell 2, and requests all The service, wherein the serving cell 1 and the serving cell 2 are any serving cell in the coverage of multiple serving cells where the terminal device is located.
  • the terminal device can read the message of serving cell 1 to obtain the mapping relationship between service A and RA resources in serving cell 1.
  • the RA process is initiated on the RA resource requesting the service to request the service; the terminal device can also read the message of the neighboring cell 2 to obtain the mapping relationship between the service A and the RA resource in the neighboring serving cell 2, and the terminal device is in the corresponding
  • the RA process is initiated on the RA resource corresponding to the requested service in the neighboring serving cell 2 to request the service.
  • the serving cell 1 may be the master cell group (MCG) of the terminal device;
  • the neighboring serving cell 2 may be the secondary cell group (SCG) of the terminal device, or may not be the SCG of the terminal device.
  • the network device receives the first message from the terminal device.
  • the network device may indicate whether to accept the service request during the RA process.
  • the network device may send a third message to the terminal device, where the third message is used to indicate whether the network device accepts the service request, and the third message may include msg2, msg4, or msgB.
  • the network device may send msg2 to indicate whether the network device accepts the service request, that is, the network device performs the service through unicast, multicast, or broadcast. Data transmission; when the terminal device sends service request information via msg3, the network device may send msg4 to indicate whether the network device accepts the service request; when the terminal device sends service request information via msgA, the network device It may be sent by msgB to determine whether the network device accepts the service request.
  • Another possible implementation manner is that after receiving the first message, the network device does not send the third message to the terminal device, and the terminal device determines whether the network device receives the requested service by checking whether the network device sends the requested service. The said service request is received.
  • the network device may send a third message to the terminal device to indicate the request of the terminal device
  • the transmission mode of business data may carry transmission mode information
  • the transmission mode information is used to indicate the transmission mode of the service data
  • the transmission mode includes unicast, broadcast, and multicast
  • the third message may include msg2 , Msg4 or msgB.
  • the network device may indicate the transmission mode by sending msg2, that is, the network device sends service data through unicast, multicast, or broadcast;
  • the network device may indicate the transmission mode by sending msg4;
  • the terminal device sends service request information via msgA, the network device may indicate the transmission by sending msgB model.
  • the network device may indicate the transmission mode of the service data requested by the terminal device by sending a third message to the terminal device
  • the third message may include msg4 or msgB.
  • the network device may indicate the transmission mode by sending msg4; when the terminal device sends the service request through msgA
  • the network device can indicate the transmission mode by sending msgB.
  • the network device may indicate the transmission mode of the service request according to the RRC message carried in msg4 or msgB.
  • the terminal device and the network device establish an RRC connection .
  • the terminal device sends a first message to the network device.
  • the first message carries or indicates service request information, and the service request information is used to send the service request information to the network device.
  • the sending of service data is requested, and the first message is used for a random access procedure.
  • the terminal equipment carries or indicates the service request information in the message of the random access process, so that the network equipment can consider the service requirements of the terminal equipment in the RRC idle state and the RRC inactive state, thereby meeting the service requirements of the terminal equipment in different RRC states , And save the wireless resources of network equipment.
  • FIG. 5 is a schematic flowchart of another service request method provided by an embodiment of the present application. As shown in FIG. 5, the service request method includes the following steps:
  • S510 The terminal device sends a first message to the network device.
  • the network device receives a first message from the terminal device.
  • the network device sends a third message to the terminal device.
  • the network device may indicate the transmission mode of the service data requested by the terminal device by sending a third message to the terminal device.
  • the third message may carry transmission mode information
  • the transmission mode information is used to indicate the transmission mode of the service data
  • the transmission mode includes unicast, broadcast, and multicast
  • the third message may include msg2 , Msg4 or msgB.
  • the network device may indicate the transmission mode by sending msg2, that is, the network device sends service data through unicast, multicast, or broadcast, as shown in Fig. Shown in 6A.
  • the network device may indicate the transmission mode by sending msg4, as shown in FIG. 6B.
  • the network device may indicate the transmission mode by sending msgB, as shown in FIG. 6C.
  • the third message may include a control part (for example, the random access response in msg2) and a data part (for example, a radio resource control message), the transmission mode information may be carried in the data part, and the network device may pass a bit The code word indicates the transmission mode corresponding to a service request.
  • the third information carries a transmission mode information for indicating the data transmission mode of the requested service;
  • the first message Carry multiple service request information for example, msg3 carries multiple service request information, in order to respond to each service request, the third message can carry multiple transmission mode information, and there is a correspondence between the transmission mode information and the service request information relation.
  • the transmission mode information can be represented by M bit codewords, the M bit codewords correspond to the number of service requests one-to-one, and the i-th bit codeword among the M bit codewords can be It is used to indicate the transmission mode of the i-th service request, where the bit code length of the above-mentioned transmission mode information, that is, M, may be predefined by the protocol, indicating that a transmission mode of at most M service requests can be indicated at one time.
  • M can be 1, 2, 4, or other integer values.
  • the four codewords correspond to service request 1, service request 2, service request 3, and service request 4 in sequence.
  • the transmission mode information is 1000, it means service request 1 is transmitted through unicast, and service request 2, service request 3, and service request 4 are all transmitted through multicast or broadcast; when the transmission mode information is 0110, it means service request 2 Both service request and service request 3 are transmitted in unicast mode, and service request 1 and service request 4 are both transmitted in multicast or broadcast mode; when the transmission mode information is 1111, it means service request 1, service request 2, service request 3, and service request 4 are all transmitted by unicast.
  • the transmission mode information can be represented by K-bit codewords, Represents rounding up; where N is the number of business requests. For example, when N is 3 or 4, K both take 2, when N is 5 to 8, K both take 3, when N is 9 to 16, K both take 4, and so on.
  • the K-bit codeword is the identification information of the service request. Therefore, when the transmission mode information can be represented by the K-bit codeword, the network device can only indicate the transmission mode of one service request at the same time. Exemplarily, assuming that N is 4, which represents service request 1, service request 2, service request 3, and service request 4, then K takes 2, that is, the transmission mode information can be represented by a 2-bit codeword.
  • the 2-bit code word When the 2-bit code word is 00, it means service request 1 adopts unicast transmission mode; when the 2-bit code word is 01, it means service request 2 adopts unicast transmission mode; when the 2-bit code word When the word is 10, it means that the service request 3 adopts the unicast transmission mode; when the 2-bit code word is 11, it means that the service request 4 adopts the unicast transmission mode.
  • the method further includes: the terminal device receives a third message from the network device, the third message is used to indicate a transmission mode of the service data, and the The third message includes the msg4 or the msgB.
  • the network device may indicate the transmission mode of the service data requested by the terminal device by sending a third message to the terminal device, and the third message may include msg4 or msgB,
  • the network device may indicate the transmission mode by sending msg4, as shown in FIG. 7.
  • the network device can indicate the transmission mode by sending msgB, as shown in FIG. 8.
  • the network device may indicate the transmission mode of the service request according to the RRC message carried in msg4 or msgB.
  • RRC messages may include, but are not limited to, any of RRC setup messages, RRC resume messages, RRC Release messages, RRC reject messages, RRC connection reconfiguration messages, RRC connection reestablishment messages, RRC connection setup messages, RRC connection resume messages, or other RRC messages. kind.
  • the network device may carry an RRC setup message in msg4 or msgB to indicate that the requested service is transmitted in a unicast mode; when the terminal device is in an inactive state, the network device The RRC resume message can be carried in msg4 or msgB to indicate that the requested service is transmitted in unicast mode; when the terminal device is in the connected state, the network device can trigger the terminal device by carrying an RRC release message in msg4 or msgB Residing in the idle state indicates that the requested service is transmitted through multicast or broadcast.
  • the terminal device can initiate a service request through msg1, msg3, or msgA, and the network device uses msg2, msg4, or msgB to indicate the transmission mode of the service request according to the service requirements of the terminal equipment in different RRC states.
  • the transmission of service data not only meets the service requirements of terminal equipment in different RRC states, but also saves wireless resources of network equipment.
  • the terminal device and the network device establish an RRC connection .
  • the network device decides to provide service data to the terminal device in a unicast manner.
  • the terminal device receives the unicast transmission instruction carried in the third message, if the terminal device is currently in an idle state or in an inactive state, the terminal device needs to initiate the establishment of an RRC connection to perform unicast transmission with the network device.
  • the terminal device can initiate the establishment of the RRC connection by sending the RRC setup Request message during this RA process; when the terminal device is in the inactive state, the terminal device is in the inactive state.
  • the RRC Resume Request message or the RRC Resume Request1 message can be sent in this RA process to initiate the establishment of the RRC connection, where the RRC Resume Request message or the RRC Resume Request1 message uses different scenarios.
  • the terminal device when the terminal device is in the idle state, after receiving the third message, the terminal device can initiate the establishment of the RRC connection by sending an RRC setup Request message in another RA process;
  • the terminal device when the terminal device is in the inactive state, after receiving the third message, the terminal device can initiate the establishment of an RRC connection by sending an RRC Resume Request message or an RRC Resume Request 1 message in another RA process.
  • a terminal device in an idle state initiates a service request through msg1, and the network device instructs the terminal device in msg2 to send service data through a unicast transmission mode for the service request.
  • the terminal device can carry the RRC setup Request message in msg3 or other messages in this RA process to initiate RRC connection establishment, or it can carry RRC setup Request in msg3 or other messages in another RA process Message to initiate the establishment of the RRC connection (not shown in the figure).
  • the network device may indicate the transmission mode of the requested service through a third message.
  • the terminal device When the transmission mode is unicast and the terminal device is in the RRC idle state or the RRC inactive state, the terminal The device establishes an RRC connection with the network device during the RA process, which reduces the delay of the RRC connection establishment and improves the service performance of the terminal device.
  • the terminal device may not communicate with the network
  • the device establishes an RRC connection to send service data.
  • a terminal device that is in the RRC idle state and adopts 2-type CFRA it can initiate a service request through msg1, and obtain the transmission mode of the service request by receiving msg2 as multicast, and then it can receive all data on the downlink physical shared channel. The requested business data.
  • the terminal device receives a third message from the network device.
  • the terminal device sends a first message to the network device, the first message carries or indicates service request information, and the service request information is used to request the network device to send service data ,
  • the first message is used for a random access process
  • the network device receives the first message, and sends a third message to the terminal device, and the third message is used to carry or indicate the service data Transmission mode.
  • the terminal device can carry or indicate the service request information in the message of the random access process.
  • the network device considers the service requirements of the terminal device in different RRC states, and sends a third message to indicate the transmission mode of the service request to perform service data. This not only satisfies the service requirements of terminal equipment in different RRC states, but also saves wireless resources of network equipment.
  • an electronic device includes hardware structures and/or software modules corresponding to each function.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the electronic device into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 7 is a functional unit composition block diagram of a service requesting apparatus 700 provided by an embodiment of the present application.
  • the service requesting apparatus 700 is applied to a terminal device.
  • the apparatus 700 includes a sending unit 710, wherein:
  • the sending unit 710 is configured to send a first message to a network device, where the first message carries or indicates service request information, the service request information is used to request the network device to send service data, and the first message is used In the random access process.
  • the first message includes msg1, msg3, or msgA.
  • the first message includes one or more of the service request information.
  • the apparatus 700 further includes a selection unit 720, configured to select the first message according to the type of random access and/or the quantity of the service request information, and the random access
  • the types include four-step random access 4-step RA and two-step random access 2-step RA.
  • the selection unit 720 is specifically configured to: when the type of random access is the 4-step RA, and/or the number of the service request information is one, the first message Is the msg1 or the msg3; when the type of random access is the 4-step RA and the number of service request information is multiple, the first message is the msg3; In a case where the type of random access is the 2-step RA, and/or the quantity of the service request information is one or more, the first message is the msgA.
  • the service request information includes at least one of the following: a service identifier, time information for receiving the service data, and geographic location information for receiving the service data.
  • the apparatus 700 further includes a determining unit 730, which is configured to: in a case where the first message is the msg1 or the msgA, according to the resource and the all-in-one information of the first message The mapping relationship of the service identifier determines the resource of the first message.
  • the apparatus 700 further includes a receiving unit 740, and the receiving unit 740 is configured to receive a second message from the network device, where the second message is used to indicate the mapping relationship.
  • the receiving unit 740 is further configured to: receive a third message from the network device, the third message carrying transmission mode information, and the transmission mode information is used to indicate a transmission mode of the service data,
  • the transmission mode includes unicast, multicast, and broadcast, and the third message includes msg2, msg4, or msgB.
  • the receiving unit 740 is further configured to: receive a third message from the network device, where the third message is used to indicate a transmission mode of the service data, and the second The three messages include the msg4 or the msgB.
  • the radio resource control RRC state of the terminal device includes: an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the terminal device and the network device establish an RRC connection .
  • the terminal device sends the first message in a current serving cell or a neighboring serving cell, and the neighboring serving cell includes one or more.
  • the service request apparatus described in the embodiment of this application is applied to a terminal device.
  • the terminal device sends a first message to the network device.
  • the first message carries or indicates service request information, and the service request information is used for To request transmission of service data from the network device, the first message is used in a random access process.
  • the terminal equipment can carry or indicate the service request information in the message of the random access process, so that the network equipment can consider the service requirements of the terminal equipment in the RRC idle state and the RRC inactive state, thereby meeting the service requirements of the terminal equipment in different RRC states , And save the wireless resources of network equipment.
  • the device 700 in FIG. 7 may also be a chip, a chip module, a UE, or a chip system, such as a system on chip (system on chip, SoC).
  • the sending unit 710 may be the sending circuit of the chip
  • the receiving unit 740 may be the receiving circuit of the chip, which is not limited here.
  • FIG. 8 is a functional unit composition block diagram of a service requesting apparatus 800 provided by an embodiment of the present application.
  • the service requesting apparatus 800 is applied to a network device.
  • the apparatus 800 includes a receiving unit 810, wherein:
  • the receiving unit 810 is configured to receive a first message from a terminal device, the first message carrying or indicating service request information, the service request information being used to request the network device to send service data, the first message Used for random access procedures.
  • the first message includes msg1, msg3, or msgA.
  • the first message includes one or more of the service request information.
  • the service request information includes at least one of the following: a service identifier, time information for receiving the service data, and geographic location information for receiving the service data.
  • the apparatus 800 further includes a sending unit 820, and the sending unit 820 is configured to send a second message to the terminal device, where the second message is used to indicate that the resource of the first message is related to the The mapping relationship of the business ID.
  • the sending unit 820 is further configured to send a third message to the terminal device, the third message carrying transmission mode information, and the transmission mode information is used to indicate the transmission mode of the service data, and
  • the transmission mode includes unicast, multicast and broadcast, and the third message includes msg2, msg4, or msgB.
  • the sending unit 820 is further configured to: send a third message to the terminal device, where the third message is used to indicate a transmission mode of the service data, and the third The message includes the msg4 and the msgB.
  • the service request apparatus described in the embodiment of this application is applied to a network device, and the network device receives a first message from a terminal device, and the first message carries or indicates service request information, and the service request information It is used to request transmission of service data from the network device, and the first message is used in a random access procedure.
  • the network device sends service data by receiving service requests initiated by terminal devices in different RRC states, which can meet the service requirements of terminal devices in different RRC states and save wireless resources of the network device.
  • the device 800 in FIG. 8 may also be a chip, a chip module, a UE, or a chip system, such as a system on chip (system on chip, SoC).
  • the sending unit 820 may be the sending circuit of the chip
  • the receiving unit 810 may be the receiving circuit of the chip, which is not limited here.
  • FIG. 9 is an electronic device provided by an embodiment of the present application.
  • the electronic device includes: one or more processors, one or more memories, one or more communication interfaces, and one or more programs ;
  • the one or more programs are stored in the memory, and are configured to be executed by the one or more processors.
  • the electronic device is a terminal device
  • the above-mentioned program includes instructions for executing the following steps:
  • a first message is sent to a network device, the first message carries or indicates service request information, the service request information is used to request the network device to send service data, and the first message is used in a random access process.
  • the electronic device is a network device, and the foregoing program includes instructions for executing the following steps:
  • Receive a first message from a terminal device the first message carrying or indicating service request information, the service request information is used to request the network device to send service data, and the first message is used in a random access process .
  • An embodiment of the application also provides a chip, the chip is used to send a first message to a network device, the first message carries or indicates service request information, the service request information is used to request service data from the network device The first message is used for the random access procedure.
  • An embodiment of the present application also provides a chip module, including a transceiver component and a chip, wherein the chip is used to send a first message to a network device through the transceiver component, and the first message carries or indicates service request information
  • the service request information is used to request transmission of service data from the network device, and the first message is used in a random access process.
  • An embodiment of the present application also provides a chip, the chip is configured to receive a first message from a terminal device, the first message carries service request information, and the service request information is used to request service data from the network device Send, the first message is used for a random access procedure.
  • An embodiment of the present application also provides a chip module, including a transceiver component and a chip, wherein the chip is configured to receive a first message from a terminal device through the transceiver component, and the first message carries service request information, The service request information is used to request transmission of service data from the network device, and the first message is used in a random access process.
  • An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any method as recorded in the above method embodiment .
  • the embodiments of the present application also provide a computer program product.
  • the above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program. Part or all of the steps of the method.
  • the computer program product may be a software installation package.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the above-mentioned units is only a logical function division.
  • there may be other division methods for example, multiple units or components can be combined or integrated.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the above 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 computer readable memory.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory.
  • a number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the various embodiments of the present application.
  • the aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer-readable memory, and the memory can include: a flash disk , ROM, RAM, magnetic disk or CD, etc.

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Abstract

La présente invention concerne un procédé et un appareil de demande de service. Le procédé comprend les étapes suivantes : un dispositif terminal envoie un premier message à un dispositif de réseau, le premier message transportant ou indiquant des informations de demande de service; les informations de demande de service sont utilisées pour demander au dispositif de réseau d'envoyer des données de service; et le premier message est utilisé pour un processus d'accès aléatoire. Un dispositif terminal peut transporter ou indiquer des informations de demande de service dans un message durant un processus d'accès aléatoire de sorte qu'un dispositif de réseau peut prendre en considération des exigences de service du dispositif terminal dans un état au repos de RRC ou dans un état inactif de RRC, ce qui permet de satisfaire les exigences de service du dispositif terminal dans différents états de RRC et d'économiser des ressources radioélectriques du dispositif de réseau.
PCT/CN2021/079313 2020-03-25 2021-03-05 Procédé et appareil de demande de service WO2021190278A1 (fr)

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