WO2020192335A1

WO2020192335A1 - Information transmission method, communication apparatus and storage medium

Info

Publication number: WO2020192335A1
Application number: PCT/CN2020/076570
Authority: WO
Inventors: 石小丽; 王瑞; 奥鲁佛松亨里克; 戴明增; 曾清海
Original assignee: 华为技术有限公司
Priority date: 2019-03-27
Filing date: 2020-02-25
Publication date: 2020-10-01
Also published as: CN111757395B; CN111757395A

Abstract

Provided are an information transmission method, a communication apparatus and a storage medium. The method comprises: a first access network device acquiring a load of a second access network device; and the first access network device sending load information to a third access network device, wherein the load information is used for indicating the load of the second access network device; and the second access network device is adjacent to the first access network device, and the third access network device is adjacent to the first access network device; therefore, access network devices with no direct interfaces can also exchange load information. The present application is suitable for a plurality of communication scenarios, such as handover and dual connectivity.

Description

Information transmission method, communication device and storage medium

Technical field

This application relates to the field of wireless communication, in particular to an information transmission method, communication device and storage medium.

Background technique

Compared with the existing wireless communication system, the next generation (NG) communication system can provide shorter delay, larger bandwidth, and support a large number of connections. Load balancing is one of Technology to optimize network performance. By exchanging load information between base stations, parameters related to mobility are automatically adjusted to achieve uniform distribution of services or terminals among different base stations.

However, the above-mentioned load information can only be exchanged between two base stations with a direct interface, such as an X2 interface, and usage scenarios are limited. For example, during the handover process of the terminal, if the source base station does not have a direct interface with the neighboring base station, the source base station cannot obtain the load information of each neighboring cell, and therefore, cannot select a suitable target base station for the terminal to access.

Summary of the invention

The embodiments of the present application provide an information transmission method, a communication device, and a storage medium, which can transmit load information in a variety of networking scenarios and improve network performance.

In the first aspect, an embodiment of the present application provides an information transmission method, including: a first access network device obtains the load of a second access network device; the first access network device sends the load to the third access network device Load information, where the load information is used to indicate the load of the second access network device; wherein, the second access network device is adjacent to the first access network device, and the third access network device The network device is adjacent to the first access network device.

Wherein, the load of the second access network device may be cell granular or beam granular.

Using the information transmission method provided in this application, the first access network device obtains the load of the adjacent second access network device; and informs the third access network device adjacent to the first access network device of the load , Even if there is no direct interface, the load information can be exchanged between the access network devices, and the usage scenarios are flexible and diverse. For example, during the handover process of the terminal, the source base station can obtain the load information of each neighboring cell, so that a suitable target base station can be selected for the terminal and the accuracy of the handover decision can be improved.

In a possible implementation manner of the first aspect, the first access network device has the function of a master node, and the second access network device has the function of a secondary node, and the first access network device It can provide data transmission services for the terminal together with the second access network device.

In a possible implementation manner of the first aspect, when the second access network device serves as a secondary node, the method further includes: the first access network device receives from the second access network device An indication of the network device, where the indication is used to indicate the capacity allocated by the second access network device to one or more master nodes.

In a possible implementation of the first aspect, the method further includes: the first access network device obtains the load of the first access network device, and correspondingly, the load information is further used to indicate The load of the first access network device.

Optionally, the load of the first access network device includes one or more of the following: air interface load, available capacity, transmission load, or hardware load.

Optionally, the load of the first access network device includes one or more of the following: load when the first access network device is used as a master node, and load when the first access network device is used as an independent node Load, or load of the candidate secondary node corresponding to the first access network device. Wherein, the candidate secondary node may include the second access network device.

Optionally, the load of the first access network device includes the sum of the load when the first access network device is the master node and the load when the first access network device is the independent node.

In a possible implementation of the first aspect, the load information is used to indicate the sum of the load of the second access network device and the load of the first access network device.

In a second aspect, this application provides an information transmission method, including: a second access network device sends the load of the second access network device to the first access network device, so that the first access network device The device sends load information to the third access network device, where the load information is used to indicate the load of the second access network device; wherein, the second access network device is similar to the first access network device. Adjacent, and the third access network device is adjacent to the first access network device.

The second access network device may serve as a candidate secondary node of the first access network device, or, as a secondary node and the first access network device as a master node, jointly provide a data transmission service for the terminal.

In a possible implementation manner of the second aspect, when the second access network device serves as a secondary node, the method further includes: the second access network device sends to the first access network device Indication, the indication is used to indicate the capacity allocated by the second access network device to one or more master nodes.

In a possible implementation of the first aspect or the second aspect, the load of the second access network device includes: the load when the second access network device is used as a secondary node, and/or, the first 2. Load when the access network equipment is used as an independent node.

In a possible implementation of the first aspect or the second aspect, the load of the second access network device when used as a secondary node includes one or more of the following: air interface load, available capacity, and maximum available capacity for the primary node Capacity, transmission load, or hardware load.

In a possible implementation of the first aspect or the second aspect, the load of the second access network device as an independent node includes one or more of the following: air interface load, available capacity, transmission load, or hardware load .

Through the above implementation methods, the first access network device can obtain multiple types of loads of the second access network device working in different scenarios, which improves the dual connection of the first access network device or the performance of the third access network device. The accuracy of the handover decision, thereby improving the communication quality.

In a possible implementation of the first aspect or the second aspect, the first access network device is a control unit (CU), and the second access network device is a distributed control unit managed by the CU Distributed unit (DU), the load of the first access network device includes one or more of the following: air interface load, available capacity, hardware load, or F1 interface transmission load (F1 TNL load); and 2. The load of the access network equipment includes one or more of the following: wireless resource status, available capacity, hardware load, or NG interface transmission load (NG TNL load). In the CU-DU scenario, the CU and DU can separately count their respective loads, which improves the accuracy of load statistics.

In a third aspect, this application provides an information transmission method, including: a first access network device obtains a load of the first access network device, and the load of the first access network device includes the first access network device. The load of the candidate secondary node corresponding to the network access device; the first access network device sends load information to adjacent access network devices, where the load information is used to indicate the load of the first access network device.

Wherein, the first access network device has a function as a master node, and can provide a data transmission service for the terminal together with the auxiliary node.

In a possible implementation manner of the third aspect, the first access network device receives the load of the second access network device from the second access network device, and the second access network device is all The candidate secondary node determined by the first access network device.

In a possible implementation manner of the third aspect, the load of the second access network device includes: the load when the second access network device is used as a secondary node, and/or, the second access The load of the network equipment as an independent node.

In a possible implementation manner of the third aspect, the load of the first access network device further includes: the load when the first access network device serves as the master node, and/or the load of the first access network device The load of the networked device as an independent node.

In a possible implementation of the third aspect, the load of the first access network device includes the load when the first access network device is the master node and the load of the first access network device is the independent node. The sum of time.

In a fourth aspect, an embodiment of the present application provides a communication device, which has an access network device (for example, the first access network device described above) in the information transmission method shown in any one of the first aspect to the third aspect above. Device or second access network device). The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or means corresponding to the above-mentioned functions.

In a possible design, the device includes a processor configured to support the device to perform corresponding functions of the access network device in the information transmission method shown above. The device may also include a memory, which may be coupled with the processor, which stores program instructions and data necessary for the device.

In a possible implementation, the communication device may be an access network device, such as a base station, or a component that can be used in an access network device, such as a chip or a chip system or circuit.

Optionally, the device further includes an interface circuit, which can be used to support communication between the access network device and other network devices, and send the information or instructions involved in the above-mentioned information transmission method to the other network devices.

Optionally, the device further includes a transceiver, and the transceiver may be an independent receiver, an independent transmitter, or a transceiver with integrated transceiver functions. The transceiver can be used to support communication between the device and the terminal

In a fifth aspect, an embodiment of the present application provides a communication system, including the first access network device and the second access network device described in the above aspect.

Optionally, the communication system may also include a terminal.

In the sixth aspect, the embodiments of the present application provide a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes the computer to perform the information transmission described in any of the above aspects method.

In the seventh aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the information transmission method described in any of the above aspects.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

FIG. 1 is a schematic diagram of a communication system 100 provided by the present application;

Figure 1a is a schematic diagram of an SA networking architecture provided by this application;

Figure 1b is a schematic diagram of another SA networking architecture provided by this application;

Figure 1c is a schematic diagram of an EN-DC architecture provided by this application;

Figure 1d is a schematic diagram of an MR-DC architecture provided by the present application;

Figure 1e is a schematic diagram of another MR-DC architecture provided by this application;

Figure 1f is a schematic diagram of an NR CU-DU architecture provided by this application;

2 is a schematic flowchart of an information transmission method provided by an embodiment of the present application;

Fig. 3 is a schematic diagram of a signaling flow of an information transmission method provided by an embodiment of the present application;

Figure 4 is a schematic diagram of a signaling flow of an information transmission method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a signaling flow of an information transmission method provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a communication device 700 provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of an access network device 800 provided by an embodiment of the present application.

detailed description

Fig. 1 is a schematic diagram of a communication system 100 provided by an embodiment of the present application.

Fig. 1 exemplarily shows a schematic diagram of the architecture of a communication system 100 provided by the present application. The communication system 100 includes access network equipment and terminals. FIG. 1 takes the communication system 100 including an access network device 101, an access network device 102, an access network device 103, and a terminal 104 as an example for illustration. Wherein, the access network device 101 and the access network device 102 are adjacent devices and have a communication interface (interface 1), and the access network device 102 and the access network device 103 are adjacent devices and have a communication interface (interface 2), Each access network device separately manages at least one cell. As shown in FIG. 1, the terminal 104 accesses the access network device 101, and the terminal 104 supports dual connectivity (DC) communication.

It should be noted that the communication system 100 is only an example, and the communication system applicable to this application is not limited to this. For example, the number of access network devices and terminals included in the communication system 100 is only an example, and the communication system 100 may include multiple One terminal and access network equipment. One access network device can manage one or more terminals, that is, one or more terminals can access the network through the same access network device. In addition, the communication system 100 may also include other devices. For example, it may also include a wireless relay device and a wireless backhaul device, which are not shown in FIG. 1.

The communication system in this application can be the universal mobile telecommunications system (UMTS), or the global system for mobile communication (GSM)/enhanced data rate for GSM evolution , EDGE) system, or long term evolution (LTE) wireless communication system, or new radio (NR) system and other fifth generation (5G) mobile communication systems, or other communications Systems, such as public land mobile network (PLMN) systems, or other communication systems that may appear in the future, such as other next generation (NG) communication systems, are not limited in this application.

In this application, the terminal may be various types of devices that provide users with voice and/or data connectivity, such as a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal can communicate with the core network via an access network, such as a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal may include user equipment (UE), wireless terminal, mobile terminal, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote) station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), etc. . For example, it may include mobile phones (or "cellular" phones), computers with mobile terminals, portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, and smart wearable devices. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, etc.) PDA), smart bracelets, smart watches and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment. In addition, the terminal 120 may also be a drone device. In the embodiments of the present application, the chip applied in the above-mentioned device may also be called a terminal.

In this application, the access network equipment can be used to connect the terminal to a wireless network such as RAN. The access network equipment may be a base station defined by the 3rd generation partnership project (3GPP), for example, it may be a base station equipment in an LTE system, that is, an evolved NodeB (evolved NodeB, eNB/eNodeB); It can also be the access network side equipment in the NR system, including gNB, transmission point (trasmission point, TRP), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU) ), or an access network device composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit, and the structure of CU-DU can be used Split the protocol layer of the base station, part of the protocol layer functions are placed in the CU centralized control, and the remaining part or all of the protocol layer functions are distributed in the DU, and the CU centrally controls the DU. In addition, when the eNB is connected to a 5G core network (5G-Core, 5G CN), the LTE eNB may also be referred to as an eLTE eNB. Specifically, eLTE eNB is an evolved LTE base station equipment based on LTE eNB, which can be directly connected to 5G CN, eLTE eNB also belongs to base station equipment in NR. The access network device can also be a wireless terminal (WT), such as an access point (AP) or an access controller (AC), or other devices that have the ability to communicate with the terminal and the core network For access network devices, such as relay devices, vehicle-mounted devices, smart wearable devices, etc., the embodiment of the present application does not limit the types of access network devices.

Based on the communication system architecture shown in FIG. 1, this application provides the following three possible scenarios.

Scenario 1: Standlone (SA) networking architecture.

As shown in Figure 1a, a schematic diagram of an SA networking architecture provided by this application. In this architecture, gNB101a, gNB102a, and gNB103a are independent nodes that can be connected to the 5G core network (5G core network, 5GC) through the NG interface. gNB101a and gNB102a are neighboring stations, and gNB102a and gNB103a are neighboring stations. The gNB102a can communicate through an Xn interface (also called an Xn-control plane (Xn-C) interface), and the gNB102a and gNB103a can also communicate through an Xn interface. In a possible situation, gNB101a may be the access network device 101 in FIG. 1, gNB102a may be the access network device 102 in FIG. 1, and gNB103a may be the access network device 103 in FIG. 1.

As shown in Figure 1b, it is a schematic diagram of another SA networking architecture provided in this application. In this architecture, eLTE eNB101b, eLTE eNB102b, and eLTE eNB103b are respectively connected to the 5G core network through NG interfaces, eLTE eNB101b and eLTE eNB102b are neighbors to each other, eLTE eNB101b and eLTE eNB103b are neighbors to each other, and eLTE eNB101b and eLTE eNB102b can pass through X2-C interface communication, eLTE eNB102b and eLTE eNB103b can also communicate through X2-C interface. In a possible situation, eLTE eNB101b may be the access network device 101 in Figure 1 above, eLTE eNB102b can be the access network device 102 in Figure 1 above, and eLTE eNB103b can be the access network device in Figure 1 above 103.

The second scenario is a multi-connectivity data transmission architecture (also referred to as a primary-secondary node architecture).

In the second scenario, the access network device 101 and the access network device 102 jointly provide services for the terminal 104, where the access network device 101 may be called a master node (Master Node, MN), and the access network device 102 may be called a secondary node. Node (secondary node, SN). There are control plane connections and user plane connections between MN and core network (Core Network, CN). SN and core network can have user plane connections or no user plane connections. S1-U represents user plane connection. , Use S1-C to represent the control plane connection. When there is no user plane connection between the SN 120 and the core network, the data of the terminal 104 can be offloaded to the SN by the MN at the Packet Data Convergence Protocol (PDCP) layer. The above MN and SN can also be referred to as primary base station and secondary base station.

Multiple connections can be implemented between access network devices of the same standard, or between access network devices of different standards. For example, dual connectivity can be implemented in the scenario of LTE and NR joint networking, called LTE-NR dual connectivity, so that the terminal can simultaneously obtain wireless resources from LTE and NR air interfaces for data transmission, and obtain a gain in transmission rate.

The second scenario can be divided into the following two network architectures.

Network architecture 1: E-UTRA-NR dual connectivity (EN-DC) network architecture of evolved universal terrestrial radio access network and NR.

As shown in Fig. 1c, a schematic diagram of an EN-DC architecture provided by this application. In this architecture, the primary node may be eNB101c, and the secondary node may be gNB102c, where eNB101c may also be called an anchor base station. eNB101c can be connected to mobility management entity (MME) or service gateway (SGW) in the 4G core network through the S1-mobility management entity (S1-MME) interface, eNB101c and gNB102c Communication can be done through the X2-C interface. As shown in Figure 1c, eNB103c is a neighboring station of eNB101c, and eNB103c and eNB101c can communicate through the X2 port. In a possible situation, LTE eNB101c may be the access network device 101 in Figure 1 above, NR gNB102c can be the access network device 102 in Figure 1 above, and LTE eNB103c can be the access network device in Figure 1 above 103.

Network architecture two, multi-RAT dual connectivity (MR-DC) network architecture.

The second network architecture can be divided into the following two possible scenarios.

Scenario 1: The core network connected by the primary node and the secondary node is a 4G core network (also called EN-DC architecture)

For this scenario 1, refer to the introduction of the EN-DC architecture shown in FIG. 1c, and will not be repeated here.

In case 2, the core network connected by the primary node and the secondary node is a 5G core network.

This situation 2 can be divided into the following two situations (ie, situation 2.1 and situation 2.2).

In case 2.1, the primary node is gNB101d, and the secondary node is eLTE eNB102d.

As shown in Fig. 1d, a schematic diagram of an MR-DC architecture provided in this application. In this architecture, the primary node is gNB101d, the secondary node is eLTE eNB102d, and gNB101d may also be called an anchor. The gNB101d is connected to the mobility management function (core access and mobility management function, AMF) network element or user plane function (UPF) network element of the 5G core network through the NG-C interface. The gNB101d and eLTE eNB102d can pass through Xn-C interface communication.

In case 2.2, the primary node is eLTE eNB101e, and the secondary node is gNB102e.

As shown in FIG. 1e, it is a schematic diagram of another MR-DC architecture provided in this application. In this architecture, the primary node is eLTE eNB101e, the secondary node is gNB102e, and eLTE eNB101e may also be called an anchor base station. The eLTE eNB101e is connected to the AMF network element or UPF network element of the 5G core network through the NG-C interface, and the gNB102e and the eLTE eNB101e can communicate through the Xn-C interface.

Scenario three, CU-DU architecture.

In this architecture, the CU corresponds to at least one DU, or in other words, the CU can manage one or more DUs, and the CU can communicate with each DU separately. The architecture may be the CU-DU architecture in the LTE system, or the CU-DU architecture in the NR system. As shown in FIG. 1f, a schematic diagram of the CU-DU architecture of NR provided in this application. The architecture includes adjacent gNB-1 and gNB-2, gNB-1 includes one CU101f and two DU102f, and gNB-2 also includes one CU101f and two DU102f as an example. CU101f in gNB-1 and CU101f in gNB-2 can communicate through the Xn-C interface, and between CU101f and DU102f in gNB-1, and between CU101f in gNB-2 and two DU102f through F1 Interface communication. Optionally, in an implementation manner, the functions of CU and DU can be divided according to protocol stack functions. CU has functions above the PDCP layer (including PDCP, RRC and SDAP), and DU has functions below the PDCP layer (including RLC, MAC, and PHY). )Features. CU101f in gNB-1 can be the access network device 101 in Figure 1 above, DU102f in gNB-1 can be the access network device 102 in Figure 1 above, and CU101f in gNB-2 can be the access network device 102 in Figure 1 above.的Access network equipment 103. Optionally, in another implementation manner, gNB-2 may be a common type of base station, that is, a base station with a non-CU-DU architecture, and gNB-2 is the access network device 103 in FIG. 1 above.

It should be noted that the CU-DU architecture in this application can be extended to a multi-hop relay scenario, that is, the DU can be a relay device, or a scenario where the DU and the terminal are transmitted through the relay device.

The beam appearing in this application may include a transmitting beam or a receiving beam, which refers to radio waves with a certain direction and shape in the space formed when at least one antenna port transmits or receives wireless signals. It can be seen that the beam has a certain coverage range. The method of forming the beam may include weighting the amplitude and/or phase of the data transmitted or received by at least one antenna port to form the beam, or other methods, such as adjusting the relevant parameters of the antenna unit, to form the beam. This embodiment of the application There is no particular limitation on this. After the introduction of beams in the NR system, the signal coverage of the access network device can be composed of multiple beams, or the cell under the access network device can be covered by multiple beams. The beam includes a beam based on a synchronization signal block (Synchronization Signal Block, SSB) and a beam based on a channel state information reference signal (Channel State Information RS, CSI-RS). Correspondingly, the identifier of the beam can use an SSB index (index) Or CSI-RS index to identify. The configuration of the beam is configured through a radio resource control (Radio Resource Control, RRC) message.

The embodiment of this application defines the one-way communication link from the access network to the terminal as the downlink, the data transmitted on the downlink is the downlink data, and the transmission direction of the downlink data is called the downlink direction; and the one from the terminal to the access network The unidirectional communication link 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.

The resources described in the embodiments of the present application may also be referred to as transmission resources, including one or more of time domain resources, frequency domain resources, and code channel resources, and may be used to carry data in the uplink communication process or the downlink communication process. Or signaling.

It should be understood that the term "and/or" in this article is only an association relationship describing the associated objects, indicating that there can be three types of relationships, for example, A and/or B can mean: A alone exists, and both A and B exist. , There are three cases of B alone. In addition, the character "/" in this text indicates that the associated objects before and after are in an "or" relationship.

It should be understood that in the embodiment of the present invention, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and/or other information.

The "plurality" in the embodiments of the present application refers to two or more.

The descriptions of the first, second, etc. appearing in the embodiments of this application are only used for illustration and distinguishing the description objects. There is no order, and it does not mean that the number of devices in the embodiments of this application is particularly limited, and cannot constitute a reference to this application. Any limitations of the embodiment.

The "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.

Unless otherwise specified, "transmit/transmission" in the embodiments of this application refers to two-way transmission, including sending and/or receiving actions. Specifically, "transmission" in the embodiments of the present application includes the sending of data, the receiving of data, or the sending of data and the receiving of data. In other words, the data transmission here includes uplink and/or downlink data transmission. Data may include channels and/or signals. Uplink data transmission means uplink channel and/or uplink signal transmission, and downlink data transmission means downlink channel and/or downlink signal transmission.

The services appearing in the embodiments of this application refer to the communication services obtained by the terminal from the network side, including control plane services and/or data plane services, such as voice services, data traffic services, and so on. The sending or receiving of a service includes the sending or receiving of service-related data (data) or signaling (signaling).

Various types of loads appearing in the embodiments of the present application may also be referred to as load measurement quantities, including uplink load and/or downlink load, where the uplink load includes uplink (UL) load and/or supplementary Uplink (secondary uplink, SUL) load.

The "network" and "system" appearing in the embodiments of this application express the same concept, and the communication system is the communication network.

It is understandable that in the embodiments of the present application, the terminal and/or the access network device can perform some or all of the steps in the embodiments of the present application. These steps or operations are only examples, and the embodiments of the present application may also perform other operations or each. This kind of operation deformation. In addition, each step may be executed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all the operations in the embodiment of the present application.

FIG. 2 is a schematic flowchart of an information transmission method provided by this application, and the method may be used in the communication system described in FIG. 1. The method includes:

S201: The first access network device obtains the load of the second access network device. Wherein, the load of the second access network device may be cell granular or beam granular.

Optionally, the first access network device may also obtain the identity of the second access network device. When the load of the second access network device is a cell-granular load, the identifier may be a cell identifier; when the load of the second access network device is a beam-granular load, the identifier may include the cell Logo and beam logo. The load corresponds to the identifier, and by acquiring the identifier, the first access network device can learn which cell or beam under the second access network device the load belongs to.

It can be understood that the embodiments of the present application do not impose any limitation on the number of second access network devices, that is, the first access network device can obtain the load of one or more second access network devices, and the one or more A communication interface exists between the second access network device and the first access network device respectively.

S202: The first access network device sends load information to a third access network device, where the load information is used to indicate the load of the second access network device.

Wherein, the second access network device is adjacent to the first access network device, and the third access network device is adjacent to the first access network device.

Optionally, the first access network device may serve as an independent node in the SA scenario or the master node in the MR-DC scenario; the second access network device may serve as an independent node in the SA scenario or the master node in the MR-DC scenario Secondary node. Wherein, if in the SA scenario, the first access network device or the second access network device as an independent node can communicate with the terminal separately, establish an independent control plane connection and data plane connection with the terminal, and the independent node is connected to The core network has an independent interface. If in the MR-DC scenario, the first access network device can act as the master node, and there is a communication interface, such as X2 interface or Xn interface, with the second access network device as a secondary node, which is controlled by the master node and the terminal. The plane connection is connected with the data plane, and the auxiliary node establishes a data plane connection with the terminal. In other words, the first access network device or the second access network device can work in SA mode or non-standalone (non-standalone, NSA) mode, and the first access network device in NSA mode has the function of the master node. The second access network device in the mode has the function of a secondary node.

Optionally, the first access network device is a CU, and the second access network device is a DU, and communication between the first access network device and the second access network device may be through an F1 interface. In the embodiment of the present application, since there is a direct interface between the CU and the DU, the CU and the DU can be regarded as adjacent access network equipment.

Optionally, in an embodiment of the present application, the load of the second access network device is determined by the second access network device and sent to the first access network device. Specifically, the second access network device may determine the load through statistics, measurement, etc., which is not limited.

Optionally, in an embodiment of the present application, the third access network device may use the acquired load information for handover decision. Specifically, when a terminal connected to the third access network device will perform cell handover during the movement, the third access network device may obtain load information of the first access network device and/or the second access The load information of the network device determines the target cell, for example, it is determined whether the terminal can be handed over to the cell under the first access network device or the second access network device.

Optionally, in an embodiment of the present application, the load of the second access network device includes the load when the second access network device is used as a secondary node, and/or the second access network device is used as The load when the node is independent.

Optionally, the load when the second access network device is used as a secondary node includes air interface load, available capacity (composite available capacity, CAC), maximum capacity used by the master node, transmission load, or hardware load (HW load). ) Any one or more of the loads.

Wherein, the air interface load can be represented by a radio resource state. The radio resource status may include uplink and/or downlink physical resource block (physical resource block, PRB) resource utilization. Optionally, the uplink PRB resource utilization includes UL carrier and/or PRB resource utilization of SUL carrier rate. Among them, an example of a parameter indicating PRB resource utilization is shown in Table 1:

Table I

It can be understood that the parameter indicating the PRB resource utilization rate can be any one or more of the above, which is not limited in this application.

The available capacity may also be referred to as available resources, including available uplink capacity and/or available downlink capacity. The uplink available capacity includes UL available capacity and/or SUL available capacity. Wherein, the available capacity may be represented by a cell capacity class value (cell capacity class value) and/or a specific capacity value (capacity value), which is not limited in this application. An example of the parameter indicating the available capacity is shown in Table 2:

Table II

It can be understood that the parameter indicating the available capacity can be any one or more of the above, which is not limited in this application.

The maximum capacity used by the master node refers to the maximum capacity that can be used by the second access network device as a secondary node when providing services for the terminal together with the master node. It includes the uplink capacity and/or downlink capacity for the master node, where the uplink capacity includes UL capacity and/or SUL capacity. For example, if the total capacity of the second access network device is 100, when the second access network device is used as a secondary node, the capacity for the primary node is 30, and the remaining 70 capacity is when the second access network device is used as an independent node. Capacity used.

The transmission load refers to the transmission load between the access network device and the core network, including uplink transmission load and/or downlink transmission load, where the uplink transmission load includes UL transmission load and/or SUL transmission load. It can be understood that, depending on the core network type, the interface type between the core network and the access network device is different, and further, the transmission load can be divided according to different interface types. For example, if the SN is connected to the 4G core network, the transmission load is the transmission load of the S1 interface (S1 TNL load), and if the SN is connected to the 5G core network, the transmission load is the transmission load of the NG interface. Optionally, the transmission load may be a load indicator, used to indicate, for example, the transmission load intensity of high, middle and low levels, or other forms, for example, may be a specific transmission load value, etc., which is not limited in this application .

The hardware load includes uplink hardware load and/or downlink hardware load, where the uplink hardware load includes UL hardware load and/or SUL hardware load. Optionally, the hardware load is a load indicator, which is used to indicate, for example, high, middle, and low levels of hardware load intensity. It can also be in other forms, for example, it can be a specific hardware load value, which is not limited by this application.

Optionally, in an embodiment of the present application, the load of the second access network device as an independent node includes any one or more of air interface load, available capacity, transmission load, or hardware load. For the specific description of each load, please refer to the above, without repeating it.

Optionally, in an embodiment of the present application, the second access network device sends the identity of the cell and the load measurement result of the cell granularity to the first access network device. An example is shown in Table 3:

IE(information element信元)/Group Name(组名)IE (information element)/Group Name (group name)
Cell Measurement Result(小区测量结果)Cell Measurement Result (cell measurement result)
>Cell Measurement Result Item(小区测量结果选项)>Cell Measurement Result Item (cell measurement result option)
>>Cell ID(小区标识)>>Cell ID (Cell ID)
>>Hardware Load Indicator(硬件负载指示)>>Hardware Load Indicator (Hardware Load Indicator)
>>TNL Load Indicator(传输负载指示)>>TNL Load Indicator (transmission load indicator)
>>Radio Resource Status(无线资源状态)>>Radio Resource Status (Radio Resource Status)
>>Composite Available Capacity Group(可用容量)>>CompositeAvailableCapacityGroup (available capacity)
>>Composite Available Capacity for MN(供主节点使用的最大容量)>>Composite Available Capacity for MN (Maximum capacity for the master node)

Table Three

Optionally, in an embodiment of the present application, the second access device sends the load measurement result of the beam granularity to the first access network device. An example is shown in Table 4:

Table Four

It can be understood that the information element Composite Available Capacity for MN in Table 3/Table 4 exists when the second access device serves as a secondary node.

Optionally, in an embodiment of the present application, when the second access network device is a secondary node, the method further includes: the second access network device sends an instruction to the first access network device The capacity allocated by the second access network device to one or more master nodes may also be referred to as capacity indication. Specifically, the indication is used to indicate that the second access network device is a secondary node that can serve as multiple primary nodes, and at the same time indicates the capacity allocated to the primary node when different primary nodes are used as secondary nodes, so that the third The access device selects an appropriate master node as the target access device for handover according to the capacity. For example, eNB1, eNB2, and eNB3 are primary base stations, gNB1 can be used as secondary base stations of eNB1, eNB2, and eNB3 respectively. The total capacity of gNB1 is 100. When gNB1 is used as secondary base stations of eNB1, eNB2, and eNB3, it is the primary base station eNB1. , ENB2 and eNB3 allocate capacity of 30, 40, 50, gNB1 sends the capacity indication to eNB1, and eNB1 forwards the capacity information to gNB2. When the terminal under gNB2 supports multi-link functions and needs to be switched, gNB2 The eNB2 with the largest capacity allocated by the secondary base station can be selected as the target base station according to the capacity indication.

Optionally, in an embodiment of the present application, the method further includes S200: the first access network device obtains the load of the first access network device.

Correspondingly, the load information is also used to indicate the load of the first access network device. In an embodiment, the load information may be used to indicate the sum of the load of the first access network device and the load of the second access network device. Specifically, the first access network device may accumulate different access network devices working in different scenarios or the same type of load in the same scenario, and the load information carries or indicates the accumulated value. For example, the hardware load when the first access network device is used as the primary node can be added to the hardware load when the second access network device is used as the secondary node; or the hardware load when the first access network device is used as an independent node is added The hardware load of the second access network device as an independent node can be added, and all the hardware loads mentioned above can also be added, which is not limited.

Optionally, the load of the first access network device includes one or more of air interface load, available capacity, transmission load, and hardware load. For the specific description of each load, please refer to the above, without repeating it.

Optionally, the load of the first access network device includes the load when the first access network device serves as a master node, the load when the first access network device serves as an independent node, or the first The load of the candidate secondary node corresponding to the access network device. Wherein, the candidate secondary node refers to one or more access network devices selected from neighboring access network devices with the function of a secondary node when the first access network device serves as the primary node, and then the In the one or more access network devices, the auxiliary node is determined to perform multi-connection data transmission.

Optionally, the load of the first access network device includes the sum of the load when the first access network device is the master node and the load when the first access network device is the independent node. In an example, the first access network device can directly count the overall load, that is, load statistics by type, such as the current air interface load, hardware load, etc., without distinguishing the working scenarios of the access network device, for example, the first The access network device works as a master node or an independent node. In another example, the first access network device also accumulates specific values of the same type of load of the first access network device in different scenarios, and informs the first access network of the accumulated value through load information or the like. Network access equipment, for example, the hardware load when the first access network equipment is used as the master node is added to the hardware load when it is an independent node, and the added load information is carried in the load information sent to the third access network equipment value.

Optionally, in an embodiment of the present application, S200 can be executed independently of S201, that is, S201 and S200 can be executed alternatively. When only S200 is executed, the first access network device may notify the neighboring devices of the first access network device, such as the aforementioned third access network device, of the load obtained to itself through load information and other methods. Correspondingly, the load information may only indicate the load of the first access network device. In addition, when both S201 and S200 are executed, there is no distinction in the order of execution of the two. S201 can be executed first, then S200; or S200 first, then S201; or S201 and S200 can be executed simultaneously.

Using the information transmission method provided in this application, the first access network device obtains the load of the adjacent second access network device; and informs the third access network device adjacent to the first access network device of the load , Even if there is no direct interface, the load information can be exchanged between the access network devices, and the usage scenarios are flexible and diverse. For example, during the handover process of the terminal, the source base station can obtain the load information of each neighboring cell, so that a suitable target base station can be selected for the terminal and the accuracy of the handover decision can be improved. In addition, the method provided in this application can be applied to multiple network architectures, for example, it can be used in a multi-connection architecture or a CU-DU architecture.

The information transmission methods provided in the embodiments of this application will be explained and described in the MR-DC scenario and the CU-DU scenario respectively. It is understandable that the various implementations provided in this application can be referred to and quoted each other, and the same content will not be done. Repeat.

Figures 3 to 4 are schematic diagrams of the signaling flow of the information transmission method provided by the embodiments of the present application in the MR-DC scenario. In the embodiments shown in FIGS. 3 to 4, the first access network device is the base station 1, the second access network device is the base station 2, and the third access network device is the base station 3 for description. In the MR-DC scenario, the terminal can simultaneously access base station 1 and base station 2, and base station 1 can be used as MN, base station 2 can be used as SN, and base station 3 is a neighboring station of base station 1.

As shown in Figure 3, the method includes:

S301: The base station 2 determines the load of the base station 2.

The load of base station 2 includes the load of base station 2 as the SN and/or the load when base station 2 is used as an independent node. For the specific description of the load of base station 2, please refer to the second access network device in the embodiment shown in FIG. The description of the load will not be repeated.

S302: Base station 2 sends the load of base station 2 to base station 1.

Correspondingly, the base station 1 receives the load of the base station 2.

S303: The base station 2 sends the capacity indication information to the base station 1.

Wherein, the capacity indication information is used to indicate the capacity available for base station 1 and the capacity available for other base stations as MN when base station 2 serves as an SN.

Among them, S303 is an optional step. It can be understood that there is no prioritization of execution of S302 and S303.

In an embodiment of the present application, after base station 1 receives the load of base station 2, the method further includes S304: base station 1 determines whether to perform multi-connection data transmission with base station 2 according to the received load of base station 2. For example, if the load of the base station 2 is high, the base station 1 may consider that the base station 2 is not suitable as an SN to offload service data of the terminal.

In an embodiment of the present application, after the base station 1 receives the load of the base station 2, the method further includes S305: the base station 1 sends the load of the base station 2 to the base station 3.

Correspondingly, the base station 3 receives the load of the base station 2, and then the base station 3 can determine whether the terminal performs handover and the target base station for handover according to the load of the base station 2.

It can be understood that S304 and S305 can be executed alternatively, or both can be executed. When both are executed, the order of execution of these two steps is not distinguished.

As shown in Figure 4, the method includes:

S401: Base station 1 determines the load of base station 1 and/or the load of the neighboring cell of base station 1.

Optionally, the load of base station 1 includes one or more of the overall load of base station 1, the load of base station 1 as MN, the load of base station 1 as an independent node, the candidate SN of base station 1, or the load of SN groups.

The overall load of the base station 1 may include the load of the base station 1 as an MN and the load of the base station 1 as an independent node. When calculating the overall load, the base station 1 may not distinguish the working state of the base station 1, but only distinguish the load types, such as hardware load, transmission load, and the like.

The load of the neighboring cell of the base station 1 may include the load of the neighboring station of the base station 1, for example, the base station 2 as an independent node.

Among them, when the base station 1 is an MN, one or more candidate SNs can be determined, and further, the base station 1 can select at least one candidate SN among them to implement multi-connection data transmission. The load of the candidate SN can be sent to the base station 1 through the communication interface with the base station 1 through the base station with SN function. For example, the candidate SN may include base station 2, and base station 2 may send the load of base station 2 to base station 1 by using the method in the embodiment shown in FIG. 2 or FIG. 3, which will not be repeated.

Optionally, the base station 1 may determine to determine the SN group based on the candidate SNs. Specifically, the base station 1 may select a part of the candidate SNs as the SN group, and the load of the SN group may be directly accumulated by the load of the candidate SNs in the group. It may be other implementation manners, which is not limited in this application.

Here are several ways for base station 1 to count the load in different scenarios:

1. The base station 1 can respectively count the load of the base station 1 as an MN, the load of the base station 1 as an independent node, and the load of the candidate SN or the SN group of the base station 1, wherein the load of the candidate SN can be directly sent to the base station 1 by the candidate SN. In addition, the base station 1 can receive the load when the candidate SN is sent by the candidate SN as an independent node.

Wherein, the base station 1 as the load of the MN or the base station 1 as the load of the independent node includes any one or more of the air interface load, available capacity, transmission load, and hardware load. The specific description of each load can be Refer to the relevant content of other embodiments of the present application, and will not be repeated.

2. The base station 1 can count the overall load of the base station 1, and count the load of the candidate SN or SN group, and the load of the candidate SN as an independent node. Among them, the overall load of base station 1 includes the sum of the load of base station 1 as an MN and the load of an independent node.

3. Base station 1 can count the sum of the load of base station 1 as an MN, base station 1 as an independent node, and the load of candidate SNs or SN groups. Optionally, the base station 1 may further count the sum of the above three types of loads and the load when the candidate SN is an independent node.

S402: The base station 1 sends load information to the base station 3, where the load information is used to indicate the load of the base station 1 and/or the load of the neighboring cell of the base station 1.

Correspondingly, the base station 3 receives the load information.

S403: The base station 3 determines the target base station for terminal handover according to the load information.

For example, when the load of base station 1 is less than the load of neighboring stations of other base stations 3, base station 1 can be used as the target base station; or, when the load of base station 1 is greater than the load of neighboring stations of other base stations 3, but the load If the load of the candidate SN of base station 1 is obtained from the information, base station 3 knows that base station 1 can perform multi-connection data transmission. For example, base station 2 is added as an SN to offload the service data of base station 1, so that base station 3 can still determine base station 1 as Target base station.

In the multi-connection scenario, the base station 2 with the function of the secondary node sends the load when it is used as the secondary node and the load when it is the independent load to the base station 1 with the function of the primary node, so that the base station 1 can receive the load of the base station 2. Used to determine whether to perform multi-connection transmission with the base station 2. Further, base station 1 can send the load of base station 2 and/or the load of base station 1 to the neighboring station of base station 1. The neighboring station can consider the load of base station 1 and base station 2 in the handover decision, and select a suitable target base station for the terminal. .

Using the information transmission method provided in the embodiments of this application, load measurement and load interaction are implemented in a multi-connection scenario, and the terminal is triggered to transfer business data to the SN, thereby reducing the opportunity for triggering denial of admission and congestion control, increasing system capacity, and achieving In order to maximize the utilization of network resources.

Fig. 5 is a schematic diagram of the signaling flow of the information transmission method provided by an embodiment of the present application in a CU-DU scenario. In the embodiment shown in FIG. 5, the first access network device and the second access network device belong to the same base station (shown as base station 1 in FIG. 5), and the first access network device is a CU, and the second access network device is a CU. The network equipment is a DU. In addition, the third access network equipment is a neighboring station of base station 1 (shown as base station 2 in FIG. 5) for description.

S501: The DU determines the load of the DU.

Specifically, the DU can count the load of one or more serving cells under the DU.

Optionally, the DU statistical load includes one or more of air interface load, hardware load, CAC, and transmission load. The transmission load may be the transmission load of the F1 interface (F1 TNL load), and may include the transmission load of the uplink and/or downlink F1 interface, where the uplink includes UL and/or SUL. The transmission load of the F1 interface may be a load indication, such as high, middle and low levels, or other forms, which are not limited in this application. For specific descriptions of other load types, reference may be made to related content of other embodiments of the present application, and details are not repeated here.

It should be noted that the load of the DU statistics is based on the statistics of each cell, and the cell is a cell served under the DU; then the measurement result includes the identity of the cell. Alternatively, the load of DU statistics is based on statistics of each beam, and the beam is a beam under the cell, and the measurement result includes the identifier of the beam and the identifier of the cell. For the description of the load granularity of DU statistics, reference may be made to the relevant content in the embodiment shown in FIG. 2, and details are not repeated.

S502: The DU sends load information to the CU.

Correspondingly, the CU receives the load information.

The load information includes the load statistics result of the DU of the serving cell under the DU.

This application does not specifically limit the manner in which the DU sends the load information. For example, the DU may be actively sent, or sent according to a period, or sent according to an event, or sent according to a request of the CU, where the period and event may be configured by the CU to the DU in advance.

In an embodiment, the load information may be sent to the CU through an existing F1AP message, and the F1 interface message may be an existing F1 interface message, for example, including UE-associated messages and non-UE associated messages. The -associated) message may also be a newly defined F1 interface message, which is not limited in this application.

S503: The CU determines the load of the CU.

Specifically, the load of the CU determined by the CU includes one or more of: air interface load, hardware load, CAC, and NG interface transmission load (NG TNL load), where NG TNL load includes uplink and downlink S1 interface load. Transmission load, where the uplink includes UL and/or SUL. The transmission load of the S1 interface may be a load indication, such as high, medium and low levels, or other forms, which are not limited in this application. For specific descriptions of other load types, reference may be made to related content of other embodiments of the present application, and details are not repeated here.

It can be understood that the CU can manage multiple DUs, and each DU can send load information to the CU.

Optionally, when the CU receives load information of multiple DUs, the method further includes S504: The CU performs load balancing between the DUs according to the received load information of each DU.

Specifically, the CU may select one or more DUs according to the load condition of each DU, for example, select a DU with a small load for data transmission.

Optionally, the method further includes S505: the CU sends the load of the CU and the load of the DU to the base station 2.

Furthermore, the base station 2 may judge during the handover process according to the load of the CU and the load of the DU, including: the base station 2 judges whether the terminal service can be transferred to the CU and/or DU according to the two types of loads.

Optionally, an example of the load information sent by the CU to the base station 2 is shown in Table 5.

IE/Group NameIE/Group Name
消息类型(Message Type)Message Type (Message Type)
CU测量标识(Measurement ID)CU Measurement ID (Measurement ID)
基站2 Measurement ID Base Station 2 Measurement ID
测量结果(Measurement Result for CU)Measurement Result (Measurement Result for CU)
>CU标识>CU logo
>硬件负载指示(Hardware Load Indicator)>Hardware Load Indicator (Hardware Load Indicator)
>S1接口传输负载指示(S1 TNL Load Indicator)>S1 interface transmission load indicator (S1 TNL Load Indicator)
>无线资源状态(Radio Resource Status)>Radio Resource Status
>可用容量组(Composite Available Capacity)>Available Capacity Group (Composite Available Capacity)
小区测量结果(Cell Measurement Result for DU)Cell Measurement Result for DU
>小区标识(Cell ID)>Cell ID
>硬件负载指示(Hardware Load Indicator)>Hardware Load Indicator (Hardware Load Indicator)
>S1接口传输负载指示(S1 TNL Load Indicator)>S1 interface transmission load indicator (S1 TNL Load Indicator)

>无线资源状态(Radio Resource Status)>Radio Resource Status
>可用容量(Composite Available Capacity)>Composite Available Capacity

Table 5

Another example of the load information sent by the CU to the base station 2 is shown in Table 6:

IE/Group NameIE/Group Name
Message TypeMessage Type
CU Measurement IDCU Measurement ID

基站2 Measurement IDBase Station 2 Measurement ID
测量结果(Measurement Result for CU)Measurement Result (Measurement Result for CU)
>CU标识>CU logo
>硬件负载指示(Hardware Load Indicator)>Hardware Load Indicator (Hardware Load Indicator)
>S1接口传输负载指示(S1 TNL Load Indicator)>S1 interface transmission load indicator (S1 TNL Load Indicator)
>无线资源状态(Radio Resource Status)>Radio Resource Status
>可用容量(Composite Available Capacity Group)>Available Capacity (Composite Available Capacity Group)
小区测量结果Cell Measurement Result for DUCell Measurement Result for DU
>小区标识Cell ID>Cell ID
>波束标识(Beam ID)>Beam ID (Beam ID)
>硬件负载指示(Hardware Load Indicator)>Hardware Load Indicator (Hardware Load Indicator)
>S1接口传输负载指示(S1 TNL Load Indicator)>S1 interface transmission load indicator (S1 TNL Load Indicator)
>无线资源状态(Radio Resource Status)>Radio Resource Status
>可用容量(Composite Available Capacity Group)>Available Capacity (Composite Available Capacity Group)

Table 6

The beam identifier shown in Table 6 may be SSB index or CSI-RS index.

It can be understood that the parameters included in the load information may be any one or more of the above, which is not limited in this application.

It should be noted that the CU can send the load information to the neighboring base station through the existing X2/Xn interface message, or through other newly defined messages, which is not limited in this application.

Optionally, the base station 2 may also adopt the CU-DU architecture. For example, the CU included in base station 1 is called CU1, and the CU included in base station 2 is called CU2. CU1 can send the load of CU1 and the load of the serving cell under one or more DUs managed by CU1 to CU2 through the Xn interface, and vice versa. In this way, load balancing of the DUs managed by CU1 and CU2 can be performed. Regarding the interaction of load information between CU1 and CU2, reference may be made to related descriptions in other embodiments of the present application, and details are not repeated.

In the CU-DU scenario, the CU can determine the load of the CU, so that the CU and DU can count their respective loads, and the accuracy of the load statistics can be improved. Furthermore, the CU can determine the load of each serving cell by the DU under the CU. The load and the load of the CU are sent to the neighboring station for the handover decision of the neighboring station, and the appropriate target CU or DU is selected for the terminal.

The example of the information transmission method provided by this application is described in detail above. It can be understood that, in order to implement the above-mentioned information transmission method, the communication device provided in the present application includes hardware structures and/or software modules corresponding to various functions. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present 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 present application may divide the communication device into functional units according to the foregoing method examples. For example, each function may be divided into each functional unit, 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 this application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

For example, the communication device 600 shown in FIG. 6 includes a processing unit 601 and a transceiver unit 602.

In an embodiment of the present application, the communication device 600 is used to support the first access network device to implement the information transmission method provided in the embodiment of the present application. For example, the processing unit 601 may obtain the information of the second access network device through the transceiver unit 602. The processing unit 601 may send load information to the third access network device through the transceiver unit 602, where the load information is used to indicate the load of the second access network device. Wherein, the second access network device is adjacent to the first access network device, and the third access network device is adjacent to the first access network device.

Wherein, the load of the second access network device is cell granular or beam granular.

Optionally, the load of the second access network device includes: the load when the second access network device is used as a secondary node, and/or the load when the second access network device is used as an independent node.

Wherein, the load when the second access network device is used as a secondary node may include one or more of the following: air interface load, available capacity, maximum capacity for use by the primary node, transmission load, or hardware load.

The load of the second access network device as an independent node includes one or more of the following: air interface load, available capacity, transmission load, or hardware load.

Optionally, in an embodiment of the present application, the processing unit 601 is further configured to obtain the load of the first access network device. Correspondingly, the load information may also be used to indicate the load of the first access network device.

Wherein, the load of the first access network device includes one or more of the following: air interface load, available capacity, transmission load, or hardware load.

Optionally, the load of the first access network device includes one or more of the following: load when the first access network device is used as a master node, and load when the first access network device is used as an independent node Load, or load of the candidate secondary node corresponding to the first access network device.

Optionally, the load information is used to indicate the sum of the load of the second access network device and the load of the first access network device.

Optionally, in an embodiment of the present application, when the second access network device serves as a secondary node, the transceiver unit 602 is further configured to receive an instruction from the second access network device. Used to indicate the capacity allocated by the second access network device to one or more master nodes.

Optionally, when the first access network device is a CU and the second access network device is a DU managed by the CU, the load of the first access network device includes one or more of the following: air interface load, Available capacity, hardware load, or F1 interface transmission load; and the load of the second access network device includes one or more of the following: wireless resource status, available capacity, hardware load, or NG interface transmission load.

For a detailed description of the operations performed by the various functional units of the communication device 600, such as the description of the foregoing various types of loads and load statistics and transmission methods, please refer to the embodiment of the information transmission method provided in this application, such as Figures 2 to 5 The relevant content in the illustrated embodiment will not be repeated.

In an embodiment of the present application, the communication device 600 is used to support the second access network device to implement the information transmission method provided in the embodiment of the present application. For example, the processing unit 601 is used to send the transmission unit 602 to the first access network device. Send the load of the second access network device so that the first access network device sends load information to the third access network device, where the load information is used to indicate the load of the second access network device ; Wherein, the second access network device is adjacent to the first access network device, and the third access network device is adjacent to the first access network device.

It can be understood that when the communication apparatus 600 supports the second access network device to implement the information transmission method provided in this application, the same or corresponding functions or operations as those on the first access network device side will not be repeated.

In another embodiment of the present application, in terms of hardware implementation, a processor can perform the functions of the processing unit 601, and a transceiver (transmitter/receiver) can perform the functions of the transceiver unit 602, wherein the processing unit 601 may be embedded in the processor of the base station in the form of hardware or independent of the processor of the base station, or stored in the memory of the base station in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

FIG. 7 shows a schematic structural diagram of a communication device 700 provided in this application. The communication device 700 may be used to implement the methods described in the foregoing method embodiments. The communication device 700 may be a chip, a terminal, an access network device, or other wireless communication devices.

The communication device 700 includes one or more processors 701, and the one or more processors 701 can support the communication device 700 to implement the information transmission method executed by the terminal described in the embodiments of the present application, for example, as shown in FIGS. 3-8. The method executed by the terminal in the embodiment of the present application; or, the one or more processors 701 may support the communication device 700 to implement the method executed by the access network device described in the embodiment of the present application, for example, as shown in FIGS. 2 to 5 The method executed by the access network device in the illustrated embodiment.

The processor 701 may be a general-purpose processor or a special-purpose processor. For example, the processor 701 may include a central processing unit (CPU) and/or a baseband processor. Wherein, the baseband processor can be used to process communication data (for example, the first message mentioned above), and the CPU can be used to implement corresponding control and processing functions, execute software programs, and process data of the software programs.

Further, the communication device 700 may further include a transceiving unit 705 to implement signal input (reception) and output (transmission).

For example, the communication device 700 may be a chip, and the transceiver unit 705 may be an input and/or output circuit of the chip, or the transceiver unit 705 may be a communication interface of the chip, and the chip may be used as a UE or a base station or other wireless communication device. component.

For another example, the communication device 700 may be a UE or a base station. The transceiver unit 705 may include a transceiver or a radio frequency chip. The transceiving unit 705 may also include a communication interface.

Optionally, the communication device 700 may further include an antenna 706, which may be used to support the transceiver unit 705 to implement the transceiver function of the communication device 700.

Optionally, the communication device 700 may include one or more memories 702, on which a program (or an instruction or code) 703 is stored, and the program 703 may be executed by the processor 701, so that the processor 701 executes the foregoing method embodiments Method described in. Optionally, the memory 702 may also store data. Optionally, the processor 701 may also read data (for example, predefined information) stored in the memory 702. The data may be stored at the same storage address as the program 703, or the data may be stored at a different address from the program 703. Storage address.

The processor 701 and the memory 702 may be separately provided, or may be integrated together, for example, integrated on a single board or a system-on-chip (SOC).

In a possible design, the communication device 700 is a terminal or a chip that can be used in a terminal. The processor 701 may be configured to determine uplink information; and, when the uplink information is the first feedback information, determine the first uplink control channel resource corresponding to the first feedback information, and send it on the first uplink control channel resource The first feedback information; when the uplink information includes A-CSI, determine a second uplink control channel resource corresponding to the uplink information, and send the uplink information on the second uplink control channel resource; wherein, The first uplink control channel resource is different from the second uplink control channel resource. Wherein, the uplink information may be sent to the access network device through the transceiver unit 705.

In a possible design, the communication device 700 is an access network device or a chip that can be used for an access network device, the transceiver unit 705 can be used to receive uplink information from a terminal; the processor 701 can be used to determine the use of the uplink information And, when the uplink information is received on the first uplink control channel resource, determine that the uplink information is the first feedback information; when the uplink information is received on the second uplink control channel resource, It is determined that the uplink information includes A-CSI, wherein the first uplink control channel resource is different from the second uplink control channel resource.

For a detailed description of the operations performed by the communication device 700 in the above-mentioned various possible designs, reference may be made to the relevant content in the method embodiment of the present application, and details are not repeated.

It should be understood that each step of the foregoing method embodiment may be completed by a logic circuit in the form of hardware or instructions in the form of software in the processor 701. The processor 701 may be a CPU, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices , For example, discrete gates, transistor logic devices, or discrete hardware components.

This application also provides a computer program product, which, when executed by the processor 701, implements the information transmission method described in any method embodiment in this application. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.

The computer program product may be stored in the memory 702, for example, a program 704. The program 704 is finally converted into an executable object file that can be executed by the processor 701 through processing processes such as preprocessing, compilation, assembly, and connection.

This application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the information transmission method described in any method embodiment in this application is implemented. The computer program can be a high-level language program or an executable target program.

The computer-readable storage medium is, for example, the memory 702. The memory 702 may be a volatile memory or a non-volatile memory, or the memory 702 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

In the case where the communication apparatus 700 is an access network device, FIG. 8 is a schematic structural diagram of an access network device provided in this application, and the access network device may be, for example, a base station. As shown in FIG. 8, the base station can be applied to the system shown in FIG. 1 to realize the functions of the first access network device or the second access network device in the foregoing method embodiment. The base station 800 may include one or more radio frequency units, such as a remote radio unit (RRU) 801 and at least one baseband unit (BBU) 802. Among them, the BBU 802 may include a distributed unit (DU), or may include a DU and a centralized unit (CU).

The RRU 801 may be referred to as a transceiver unit, a transceiver, a transceiver circuit or a transceiver, and it may include at least one antenna 808 and a radio frequency unit 808. The RRU801 is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for supporting the base station to implement the sending and receiving functions in the method embodiments. BBU802 is mainly used for baseband processing and control of base stations. The RRU801 and BBU802 can be physically set together, or physically separated, that is, a distributed base station.

The BBU802 can also be called a processing unit, which is mainly used to perform baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU 802 may be used to control the base station to execute the operation procedure of the access network device in the foregoing method embodiment.

The BBU802 can be composed of one or more single boards. Multiple single boards can jointly support a radio access network with a single access indication (such as a 5G network), and can also support wireless access networks with different access standards (such as an LTE network). And 5G network). The BBU 802 also includes a memory 8021 and a processor 8022. The memory 8021 is used to store necessary instructions and data. For example, the memory 8021 stores various information in the foregoing method embodiments. The processor 8022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedures in the foregoing method embodiments. The memory 8021 and the processor 8022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

Among them, the BBU 802 can execute the functions of the processing unit 601 in the communication device 600 shown in FIG. 6 or the processor 701 in the communication device 700 shown in FIG. 7; the RRU 801 can execute the transceiver unit in the communication device 600 shown in FIG. 602 or the function of the transceiver unit 705 in the communication device 700 shown in FIG. 7 will not be described in detail.

The present application also provides a communication system, including a first access network device and a second access network device. The second access network device can send the second access network device to the first access network device. The load of the device, the first access network device may receive the load of the second access network device, and send the load of the second access network device to the first access network device through load information Adjacent access network equipment.

Optionally, the first access network device may send the load of the first access network device to the adjacent access network device.

Wherein, the first access network device may be an MN and the second access network device is an SN; or the first access network device may be a CU and the second access network device is a DU.

For the specific description of the load of the first access network device and the load of the second access network device, reference may be made to the related content of other embodiments of the present application, and details are not repeated.

Those skilled in the art can clearly understand that the descriptions of the embodiments provided in this application can be referred to each other for convenience and conciseness of the description, for example, regarding the functions and steps of the devices and equipment provided in the embodiments of this application. Reference may be made to the relevant descriptions of the method embodiments of the present application, and each method embodiment and each device embodiment may also refer to each other, combine or quote each other.

In the several embodiments provided in this application, the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above may be ignored or not implemented. The device embodiments described above are merely illustrative. The division of units is only a logical function division. In actual implementation, there may be other division methods, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the units or the coupling between the components may be direct coupling or indirect coupling, and the foregoing coupling includes electrical, mechanical or other forms of connection.

It should be understood that in the various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation. In addition, in the embodiments of the present application, the terminal and/or the access network device may perform some or all of the steps in the embodiments of the present application. These steps or operations are only examples, and the embodiments of the present application may also perform other operations or various operations. Deformation. In addition, each step may be executed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all the operations in the embodiment of the present application.

Claims

An information transmission method, characterized by comprising:

The first access network device obtains the load of the second access network device;

Sending, by the first access network device, load information to a third access network device, where the load information is used to indicate the load of the second access network device;

Wherein, the second access network device is adjacent to the first access network device, and the third access network device is adjacent to the first access network device.
The method of claim 1, wherein the method further comprises:

Acquiring, by the first access network device, the load of the first access network device,

Wherein, the load information is also used to indicate the load of the first access network device.
The method according to claim 1 or 2, wherein the load of the second access network device comprises:

The load when the second access network device is used as a secondary node, and/or,

The load when the second access network device is used as an independent node.
The method according to claim 2 or 3, wherein the load of the first access network device includes one or more of the following:

The load when the first access network device serves as the master node,

The load when the first access network device is used as an independent node, or

The load of the candidate secondary node corresponding to the first access network device.
The method according to claim 3, wherein the load when the second access network device is used as a secondary node includes one or more of the following:

Air interface load, available capacity, maximum capacity for the master node, transmission load, or hardware load.
The method according to claim 3, wherein the load when the second access network device is an independent node includes one or more of the following:

Air interface load, available capacity, transmission load, or hardware load.
The method according to claim 5, wherein when the second access network device serves as a secondary node, the method further comprises:

The first access network device receives an instruction from the second access network device, where the instruction is used to indicate the capacity allocated by the second access network device to one or more master nodes.
The method according to claim 1 or 2, wherein the load of the first access network device includes the load when the first access network device is the master node and the load of the first access network device as the master node. The sum of the load when the node is independent.
The method according to claim 2 or 8, wherein the load information is used to indicate the sum of the load of the second access network device and the load of the first access network device.
The method according to claim 2 or 8 or 9, wherein the load of the first access network device includes one or more of the following:

Air interface load, available capacity, transmission load, or hardware load.
The method according to claim 2, wherein the load of the first access network device includes one or more of the following:

Air interface load, available capacity, hardware load, or F1 interface transmission load; and

The load of the second access network device includes one or more of the following:

Radio resource status, available capacity, hardware load, or NG interface transmission load,

Wherein, the first access network device is a control unit CU, and the second access network device is a distributed unit DU.
The method according to any one of claims 1-11, wherein:

The load of the second access network device is a load of cell granularity or beam granularity.
An information transmission method, characterized by comprising:

The second access network device sends the load of the second access network device to the first access network device, so that the first access network device sends load information to the third access network device, the load information Used to indicate the load of the second access network device;

Wherein, the second access network device is adjacent to the first access network device, and the third access network device is adjacent to the first access network device.
The method according to claim 13, wherein the load of the second access network device comprises:

The load when the second access network device is used as a secondary node, and/or,

The load when the second access network device is used as an independent node.
The method according to claim 14, wherein the load when the second access network device serves as a secondary node includes one or more of the following:

Air interface load, available capacity, maximum capacity for the master node, transmission load, or hardware load.
The method according to claim 14, wherein the load of the second access network device as an independent node includes one or more of the following:

Air interface load, available capacity, transmission load, or hardware load.
The method according to claim 15, wherein when the second access network device serves as a secondary node, the method further comprises:

The second access network device sends an instruction to the first access network device, where the instruction is used to indicate the capacity allocated by the second access network device to one or more master nodes.
The method according to claim 13, wherein the load of the second access network device includes one or more of the following: radio resource status, available capacity, hardware load, or NG interface transmission load,

Wherein, the first access network device is a control unit CU, and the second access network device is a distributed unit DU.
The method according to any one of claims 1-11, wherein:

The load of the second access network device is a load of cell granularity or beam granularity.
An information transmission method, characterized by comprising:

The first access network device obtains the load of the first access network device, where the load of the first access network device includes the load of the candidate secondary node corresponding to the first access network device;

The first access network device sends load information to adjacent access network devices, where the load information is used to indicate the load of the first access network device.
The method according to claim 20, wherein the first access network device has a function as a master node, and provides data transmission services for the terminal together with the auxiliary node.
The method according to claim 20 or 21, wherein the first access network device acquiring the load of the first access network device comprises: the first access network device obtains the load from the second access network The device receives the load of the second access network device, where the second access network device is a candidate secondary node determined by the first access network device.
The method according to claim 22, wherein the load of the second access network device comprises: the load when the second access network device serves as a secondary node, and/or the load of the second access network device The load of the network equipment as an independent node.
The method according to any one of claims 20-23, wherein the load of the first access network device further comprises: the load when the first access network device is the master node, and/or, The load when the first access network device is used as an independent node is described.
The method according to any one of claims 20-23, wherein the load of the first access network device further comprises the load when the first access network device is the master node and the load of the first access network device. The sum of the load of the network equipment as an independent node.
A communication device, comprising a processor coupled with a memory, wherein the memory stores instructions, and the processor executes the instructions so that the access network device executes any one of claims 1-12 The method described.
A communication device, comprising a processor coupled with a memory, wherein the memory stores instructions, and the processor executes the instructions so that the access network device executes any one of claims 13-19 The method described.
A communication device, comprising a processor coupled with a memory, wherein the memory stores instructions, and the processor executes the instructions, so that the access network device executes any one of claims 20-25 Methods.
A communication device, characterized by comprising a unit for implementing the method according to any one of claims 1-12.
A communication device, characterized by comprising a unit for implementing the method according to any one of claims 13-19.
A communication device, characterized by comprising a unit for implementing the method according to any one of claims 20-25.
A computer storage medium, characterized in that the storage medium includes computer instructions, when the instructions are executed by a computer, the computer is caused to implement the method according to any one of claims 1 to 12 or claim 13 The method of any one of -19 or the method of any one of claims 20-25.
A computer program product containing instructions, characterized in that, when the computer program product runs on a computer, the computer is caused to execute the method according to any one of claims 1 to 12 or any one of claims 13-19 Or the method of any one of claims 20-25.
A communication system includes a first access network device and a second access network device, wherein:

The first access network device is used to execute the method according to any one of claims 1-12 or 20-25;

The second access network device is used to execute the method according to any one of claims 13-19.