Forwarding resource reservation method and system

Abstract

The invention discloses a forwarding resource reservation method and system. The method comprises the following steps: a base station separation entity determines whether a user is authorized forwarding equipment or not according to whether a first interface request message sent by a base station concentration entity contains first indication information or not; the base station separation entity receives first protection indication information and / or second RRC information sent by the base station concentration entity, the first protection indication information being used for indicating the base station separation entity to serve as a base station side forwarding resource reserved by a forwarding control unit of the forwarding device in an inactive state; the second RRC information comprises the base station side forwarding resource configuration reserved in the inactive state. According to the invention, the technical problem that a base station separation entity cannot retain related forwarding resources when a conventional network-controlled repeater needs to enter an inactive state is solved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a forwarding resource reservation method and system. Background Art

[0002] At present, when the centralized entity CU (Centralized Unit)-distributed entity DU (Distributed Unit) separation architecture is used to support the NCR (network controlled repeater) function, when the NCR needs to enter the inactive state, the base station separation entity gNB-DU will release all resources and cannot retain the relevant forwarding resources. In this case, the NCR will not be able to continue to amplify and forward the terminal signal.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present application provide a forwarding resource reservation method and system to at least solve the technical problem that when a repeater controlled by the current network needs to enter an inactive state, a base station separation entity cannot reserve related forwarding resources.

[0005] According to one aspect of an embodiment of the present application, a forwarding resource reservation method is provided, including: a base station separation entity determines whether a user is an authorized forwarding device based on whether a first indication information is included in a first interface request message sent by a base station centralized entity; the base station separation entity determines the backhaul link resource configuration, access link resource configuration, and backhaul link resource configuration of the forwarding device in a connected state, and sends the relevant resource configuration to the base station centralized entity and / or the forwarding device; the base station separation entity receives the first protection indication information and / or the second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station separation entity to be the base station side forwarding resources reserved by the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

[0006] Optionally, the method further includes: receiving a first interface request message sent by the base station centralized entity; when the first interface request message includes an authorization authentication result of the forwarding device, the base station separated entity updates an authentication information list of the forwarding device.

[0007] Optionally, the method further includes: when the first interface request message does not include an authorization authentication result of the forwarding device, the base station separation entity confirms that the terminal is not a forwarding device.

[0008] Optionally, the method also includes: the base station separation entity configures an identity identifier of the forwarding device for the forwarding device, and configures at least one of the following for the forwarding unit: backhaul link resource configuration, access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRC ASN.1 format.

[0009] Optionally, the backhaul link resource configuration includes: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

[0010] Optionally, the access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

[0011] Optionally, the periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each newly added periodic forwarding resource set configuration includes at least one of the following: a resource identifier, a resource period or a starting offset, and each periodic forwarding resource set configuration that needs to be released includes: a resource identifier.

[0012] Optionally, the non-periodic beam indication information includes: a non-periodic forwarding resource set configuration, wherein each non-periodic forwarding resource set configuration includes at least one of the following: a newly added non-periodic resource, a resource identifier to be deleted, a subcarrier spacing, a bit width of a beam number, a bit size of a downlink control information DCI range, and each newly added non-periodic resource includes at least one of the following: a resource identifier, a non-periodic subframe offset, a symbol offset, and a forwarding time domain length.

[0013] Optionally, the semi-continuous beam indication information includes: a newly added semi-continuous forwarding resource set configuration, a semi-continuous forwarding resource set configuration that needs to be released, wherein each newly added semi-continuous forwarding resource set configuration includes at least one of the following: resource number, beam number, semi-continuous periodic subframe offset, symbol offset, and time domain length of semi-continuous forwarding, and each semi-continuous forwarding resource set configuration that needs to be released includes: resource number.

[0014] Optionally, the method also includes: the base station separation entity sends a first interface response message to the base station centralized entity, wherein the first interface response message includes at least one of the following: an identity of the forwarding device, a backhaul link resource configuration, and an access link resource configuration.

[0015] Optionally, the method further includes: the base station separation entity generates a media access layer control unit MAC CE message according to the backhaul link resource configuration; and sends the MAC CE message to a forwarding control unit of the forwarding device.

[0016] Optionally, generating a media access layer control unit MAC CE message includes: generating a first MAC CE message or a second MAC CE message based on the beam configuration of the downlink backhaul link, wherein the first MAC CE is used for the downlink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the second MAC CE is used for the downlink TCI status indication of the downlink backhaul link using the 3GPP Rel-15 version.

[0017] Optionally, generating a media access layer control unit MAC CE message also includes: generating a third MAC CE message or a fourth MAC CE message based on the beam configuration of the uplink backhaul link, wherein the third MAC CE message is used for the uplink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the fourth MAC CE message is used for the uplink TCI status indication of the uplink backhaul link using the 3GPP Rel-15 version.

[0018] Optionally, the method also includes: the base station separation entity receives a second interface request message sent by the base station centralized entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

[0019] Optionally, the method also includes: the base station separation entity sends a second interface response message to the base station centralized entity, wherein the second interface response message includes periodic configuration resources of forwarding resources, and the periodic configuration resources of forwarding resources are encoded using RRC ASN.1.

[0020] Optionally, the method further includes: the base station separation entity receives a third interface request message sent by the base station concentration entity, wherein the third interface request message is used to instruct the base station separation entity to release relevant configuration and logical links of the forwarding device.

[0021] Optionally, the third interface request message includes: first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of the backhaul link and / or access link for the forwarding entity of the forwarding device.

[0022] Optionally, the third interface request message also includes at least one of the following: a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

[0023] Optionally, the method also includes: when the received third interface request message contains the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link, and beam resources involved in the downlink backhaul link.

[0024] Optionally, the method further includes: the base station separation entity sends a third interface response message to the base station central entity, wherein the third interface response message is used to indicate that relevant configuration and logical links of the base station central entity forwarding device have been saved and / or released.

[0025] Optionally, the method also includes: the base station separation entity sends the second RRC message in the third interface request message to the forwarding device through the air interface, wherein the forwarding device is used to forward resources according to the periodic configuration resources of the forwarding resources in the forwarding resource configuration information when the second RRC message contains forwarding resource configuration information, or stop forwarding resources when the second RRC message does not contain forwarding resource configuration information.

[0026] According to one aspect of an embodiment of the present application, another forwarding resource reservation method is also provided, including: the base station centralized entity determines from the core network whether the forwarding device is an authorized forwarding device, and notifies the base station separation entity whether the forwarding device is an authorized forwarding device through a first interface request message; the base station centralized entity sends at least one of the first protection indication information and the second RRC information to the base station separation entity, wherein the first protection indication information is used to indicate the base station separation entity to be the base station side forwarding resources reserved by the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration retained in the inactive state.

[0027] Optionally, the method further includes: the base station centralized entity receives a radio resource control RRC establishment completion message sent by a control plane receiving unit of the forwarding device, wherein the RRC establishment completion message includes: forwarding device indication information.

[0028] Optionally, the method also includes: the base station centralized entity determines the core network element associated with the forwarding device authentication based on the forwarding device indication information; and sends the non-access layer NAS message in the RRC reconfiguration completion message to the core network element.

[0029] Optionally, the relevant transmission addresses of the core network elements are configured by a network management system.

[0030] Optionally, the method also includes: the base station centralized entity receives the authorization and authentication result of the forwarding device from the core network network element, wherein the authorization and authentication result of the forwarding device is sent by the core network network element through the NG interface message between the core network and the base station.

[0031] Optionally, the method also includes: the base station centralized entity sends a first interface request message to the base station separation entity, wherein, when the first interface request message includes the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to update the authentication information list of the forwarding device.

[0032] Optionally, when the first interface request message does not include an authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to confirm that the terminal is not a forwarding device.

[0033] Optionally, the base station centralized entity receives a first interface response message sent by the base station separated entity, wherein the first interface response message includes at least one of the following: an identity of the forwarding device, a backhaul link resource configuration, and an access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRC ASN.1 format.

[0034] Optionally, the backhaul link resource configuration includes: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

[0035] Optionally, the access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

[0036] Optionally, the periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each newly added periodic forwarding resource set configuration includes at least one of the following: a resource identifier, a resource period or a starting offset, and each periodic forwarding resource set configuration that needs to be released includes: a resource identifier.

[0037] Optionally, the non-periodic beam indication information includes: a non-periodic forwarding resource set configuration, wherein each non-periodic forwarding resource set configuration includes at least one of the following: a newly added non-periodic resource, a resource identifier to be deleted, a subcarrier spacing, a bit width of a beam number, a bit size of a downlink control information DCI range, and each newly added non-periodic resource includes at least one of the following: a resource identifier, a non-periodic subframe offset, a symbol offset, and a forwarding time domain length.

[0038] Optionally, the semi-continuous beam indication information includes: a newly added semi-continuous forwarding resource set configuration, a semi-continuous forwarding resource set configuration that needs to be released, wherein each newly added semi-continuous forwarding resource set configuration includes at least one of the following: resource number, beam number, semi-continuous periodic subframe offset, symbol offset, and time domain length of semi-continuous forwarding, and each semi-continuous forwarding resource set configuration that needs to be released includes: resource number.

[0039] Optionally, the method further includes: when the first interface response message includes the access link resource configuration, the base station centralized entity generates a corresponding first RRC message sent to the forwarding device according to the access link resource configuration.

[0040] Optionally, the method also includes: when the base station centralized entity is preparing to switch the forwarding device to a non-idle state, sending a second interface request message to the base station separation entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

[0041] Optionally, the method also includes: the base station centralized entity receives a second interface response message returned by the base station separated entity in response to the second interface request message, wherein the second interface response message includes periodic configuration resources of the forwarding resources, and the periodic configuration resources are encoded in the RRC ASN.1 format.

[0042] Optionally, sending the first protection indication information to the base station separation entity includes: the base station centralized entity sends a third interface request message to the base station separation entity, wherein the third interface request message is used to instruct the base station separation entity to release relevant configurations and logical links of the forwarding device, and determine the second RRC message to be sent to the forwarding device control unit based on the received periodic configuration resources.

[0043] Optionally, the third interface request message includes: first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of the backhaul link and / or access link for the forwarding entity of the forwarding device.

[0044] Optionally, the third interface request message also includes at least one of the following: a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

[0045] Optionally, the method also includes: the base station centralized entity receives a third interface response message returned by the base station separation entity in response to the third interface request message, wherein the third interface response message is used to indicate that relevant configurations and logical links of the base station centralized entity forwarding device have been saved and / or released.

[0046] According to one aspect of an embodiment of the present application, a forwarding resource reservation system is also provided, including: a base station centralized entity determines from a core network whether a forwarding device is an authorized forwarding device, and notifies a base station separation entity of whether the forwarding device is an authorized forwarding device through a first interface request message; the base station separation entity determines whether a user is an authorized forwarding device based on whether the first interface request message sent by the base station centralized entity contains first indication information; the base station separation entity determines the backhaul link resource configuration, the access link resource configuration, and the backhaul link resource configuration of the forwarding device in a connected state, and sends the relevant resource configuration to the base station centralized entity and / or the forwarding device; the base station separation entity receives the first protection indication information and / or the second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station separation entity to reserve the base station side forwarding resources for the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

[0047] Optionally, the forwarding resource reservation system further includes a forwarding device, and a control plane receiving unit of the forwarding device sends an RRC establishment completion message to the base station centralized entity, wherein the RRC establishment completion message includes: forwarding device indication information.

[0048] Optionally, the base station centralized entity determines the core network element associated with the forwarding device authentication based on the forwarding device indication information; and sends the non-access layer NAS message in the RRC reconfiguration completion message to the core network element.

[0049] Optionally, the relevant addresses of the core network elements are configured by a network management system.

[0050] Optionally, the core network network element is used to send the authorization authentication result of the forwarding device to the base station centralized entity through the NG interface message between the core network and the base station.

[0051] Optionally, the base station centralized entity sends a first interface request message to the base station separation entity, wherein, when the first interface request message includes an authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to update an authentication information list of the forwarding device.

[0052] Optionally, when the first interface request message does not include an authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to confirm that the terminal is not a forwarding device.

[0053] Optionally, the base station separation entity receives a first interface request message, configures an identity identifier of the forwarding device for the forwarding device, and configures at least one of the following for the forwarding unit: a backhaul link resource configuration and an access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRC ASN.1 format.

[0054] Optionally, the backhaul link resource configuration includes: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

[0055] Optionally, the access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

[0056] Optionally, the periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each newly added periodic forwarding resource set configuration includes at least one of the following: a resource identifier, a resource period or a starting offset, and each periodic forwarding resource set configuration that needs to be released includes: a resource identifier.

[0057] Optionally, the non-periodic beam indication information includes: a non-periodic forwarding resource set configuration, wherein each non-periodic forwarding resource set configuration includes at least one of the following: a newly added non-periodic resource, a resource identifier to be deleted, a subcarrier spacing, a bit width of a beam number, a bit size of a downlink control information DCI range, and each newly added non-periodic resource includes at least one of the following: a resource identifier, a non-periodic subframe offset, a symbol offset, and a forwarding time domain length.

[0058] Optionally, the semi-continuous beam indication information includes: a newly added semi-continuous forwarding resource set configuration, a semi-continuous forwarding resource set configuration that needs to be released, wherein each newly added semi-continuous forwarding resource set configuration includes at least one of the following: resource number, beam number, semi-continuous periodic subframe offset, symbol offset, and time domain length of semi-continuous forwarding, and each semi-continuous forwarding resource set configuration that needs to be released includes: resource number.

[0059] Optionally, the base station separation entity sends a first interface response message to the base station concentration entity, wherein the first interface response message includes at least one of the following: an identity of a forwarding device, a backhaul link resource configuration, and an access link resource configuration.

[0060] Optionally, when the first interface response message includes the access link resource configuration, the base station centralized entity generates a corresponding first RRC message sent to the forwarding device according to the access link resource configuration.

[0061] Optionally, the base station separation entity generates a media access layer control unit MAC CE message according to the backhaul link resource configuration, and sends the MAC CE message to a forwarding control unit of the forwarding device.

[0062] Optionally, the base station separation entity generates a first MAC CE message or a second MAC CE message based on the beam configuration of the downlink backhaul link, wherein the first MAC CE is used for the downlink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the second MAC CE is used for the downlink TCI status indication of the downlink backhaul link using the 3GPP Rel-15 version.

[0063] Optionally, the base station separation entity generates a third MAC CE message or a fourth MAC CE message based on the beam configuration of the uplink backhaul link, wherein the third MAC CE message is used for the uplink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the fourth MAC CE message is used for the uplink TCI status indication of the uplink backhaul link using the 3GPP Rel-15 version.

[0064] Optionally, when preparing to switch the forwarding device to a non-idle state, the base station centralized entity sends a second interface request message to the base station separation entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

[0065] Optionally, the base station separation entity sends a second interface response message to the base station centralized entity in response to the second interface request message, wherein the second interface response message includes periodic configuration resources of forwarding resources, and the periodic configuration resources of forwarding resources are encoded using RRC ASN.1.

[0066] Optionally, the base station centralized entity receives the second interface response message and sends a third interface request message to the base station separation entity, wherein the third interface request message is used to instruct the base station separation entity to release relevant configurations and logical links of the forwarding device, and determine a second RRC message to be sent to the forwarding device control unit based on the received periodic configuration resources.

[0067] Optionally, the third interface request message includes: first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of the backhaul link and / or access link for the forwarding entity of the forwarding device.

[0068] Optionally, the third interface request message also includes at least one of the following: periodic forwarding resource configuration, a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

[0069] Optionally, when the received third interface request message contains the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link and beam resources involved in the downlink backhaul link.

[0070] Optionally, the base station separation entity sends a third interface response message to the base station centralized entity, wherein the third interface response message is used to indicate that relevant configurations and logical links of the base station centralized entity forwarding device have been saved and / or released; and the second RRC message in the third interface request message is sent to the forwarding device via the air interface.

[0071] Optionally, when the second RRC message includes forwarding resource configuration information, the forwarding device forwards resources according to the periodic configuration resources of the forwarding resources in the forwarding resource configuration information, or, when the second RRC message does not include forwarding resource configuration information, stops forwarding resources.

[0072] In an embodiment of the present application, a base station separation entity is used to determine whether a user is an authorized forwarding device based on whether a first indication information is included in a first interface request message sent by a base station centralized entity; the base station separation entity determines the backhaul link resource configuration, access link resource configuration, and backhaul link resource configuration of the forwarding device in a connected state, and sends the relevant resource configuration to the base station centralized entity and / or the forwarding device; the base station separation entity receives the first protection indication information and / or the second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station separation entity to the base station side forwarding resources reserved for the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the manner in which the base station side forwarding resource configuration is reserved in an inactive state. By supporting the base station centralized entity in the separation architecture to indicate whether the base station separation entity reserves forwarding resources for the forwarding device, the purpose of reserving relevant forwarding resources for the base station separation entity in an inactive state is achieved, thereby solving the technical problem that the base station separation entity cannot reserve relevant forwarding resources when the current network-controlled repeater needs to enter an inactive state. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0074] Figure 1 It is a schematic diagram of a method flow for forwarding resource reservation applied to a base station separation entity provided in an embodiment of the present application;

[0075] Figure 2 It is a schematic diagram of a CU / DU separated 5G base station architecture provided according to an embodiment of the present application;

[0076] Figure 3 is a schematic diagram of a radio frequency repeater provided according to an embodiment of the present application;

[0077] Figure 4 It is a schematic diagram of an intelligent repeater supporting UE data transmission based on beamforming according to an embodiment of the present application;

[0078] Figure 5 It is a schematic diagram of a link structure of a network control of an intelligent repeater device provided according to an embodiment of the present application;

[0079] Figure 6 is a schematic diagram of a context release message provided according to an embodiment of the present application;

[0080] Figure 7 It is a schematic diagram of a method flow for forwarding resource reservation applied to a base station centralized entity provided according to an embodiment of the present application;

[0081] Figure 8 It is a structural diagram of a forwarding resource reservation system provided according to an embodiment of the present application;

[0082] Fig. 9 It is a schematic diagram of a signaling process when an NCR enters an inactive state according to an embodiment of the present application;

[0083] Fig.10 It is a schematic diagram of a deployment scenario of NCR in a separation architecture provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0084] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0085] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0086] As a new generation of wireless network technology, 5G has technical features such as supporting large bandwidth, large connections, low latency, and wireless cloudification. In terms of supporting wireless cloudification, 5G has supported the separation of CU (Centralized Unit) and DU (Distributed Unit) since Rel-15, as well as the separation of CP (control plane) and UP (user plane). Figure 2 As shown. The division of CU and DU functions is distinguished by the real-time nature of the processing content. CU equipment mainly includes non-real-time wireless high-level protocol stack functions, and also supports the sinking of some core network functions and the deployment of edge application services, while DU equipment mainly processes physical layer functions and functions with real-time requirements. On the basis of CU / DU separation, in order to further adapt to requests from different services. On the CU side of the access network, the control plane (CP) and user plane (UP) can be further separated. The separated CP and UP are decoupled from each other, interact through the standard E1 interface, and can be deployed on different physical nodes.

[0087] Repeaters are a common device used to extend coverage in wireless communication systems, and have been used in the 2G to 5G era. The main function of current RF repeaters is to amplify signals, and no analysis is done on the signals themselves. Compared with base stations, wireless repeaters have a simpler structure. They are composed of antennas, RF duplexers, low-noise amplifiers, mixers, electrically adjustable attenuators, filters, power amplifiers and other components or modules, including uplink and downlink amplification links. Since wireless repeaters only amplify signals, they will amplify noise and interference signals while amplifying useful signals.

[0088] As a technical means of coverage compensation, in addition to L1 devices such as repeaters, the 5G standard introduced a new wireless forwarding equipment technology in Rel-18, namely, the Network Controlled Repeater (NCR). Compared with the existing RF repeaters, the intelligent repeater has the following characteristics:

[0089] 1) Support beamforming for terminals in the coverage area: Figure 3 The traditional RF repeater shown in the figure can only amplify and forward signals, but cannot perform beamforming technology for terminals in the coverage area. At the same time, since there is no channel reciprocity between the macro base station and the terminal, it is also impossible to perform interference suppression operations for the terminal. Figure 4 The intelligent repeater shown supports UE data transmission based on beamforming.

[0090] 2) Support receiving control information from macro base stations: According to current standards, base stations need to have certain interactive capabilities with smart repeaters, and smart repeaters need to have at least a physical layer protocol stack, so that link adjustments between repeaters and terminals can be made based on this.

[0091] 3) Support security: Traditional RF repeaters do not need to be authenticated at the macro site, which leads to the existence of some illegal amplification devices in the system. In order to enhance security, it is necessary to support the identity authentication of the forwarding device to prevent the access of illegal devices.

[0092] At the functional level, NCR equipment such as Figure 5 As shown, it is divided into two parts: NCR-MT (network controlled repeater mobile termination, NCR mobile terminal) and NCR-FWD (network controlled repeater forwarding, NCR forwarding unit), wherein NCR-MT is a partial function set of ordinary UE, and NCR-FWD is responsible for signal forwarding and amplification. From the perspective of the base station, the control link between the NCR-MT and the base station and the forwarding link between the NCR-FWD and the base station can be sent in a time-division or simultaneous manner, and the resources used by the Control link and the Backhaul link are determined by the time domain resources configured on the base station side, and whether the NCR continues to forward in an inactive state is based on the information of the last configuration before release.

[0093] In terms of uplink and downlink beam configuration, there are many uses for SRS (Sounding Reference Signal) in the uplink direction, including beam management, codebook, noncodebook, and antenna switching. For SRS resources with usage as antenna switching, it can be configured to support 1T2R, 1T4R, and 2T4R. By sending in the configured SRS resources, the terminal allows the network to measure the uplink channel and obtain the downlink channel information through channel reciprocity. The network selects the appropriate codebook for downlink transmission based on the channel information to improve downlink performance. For FDD (Frequency Division Duplexing), due to the different uplink and downlink frequencies, the network cannot obtain the downlink codebook through SRS antenna switching. The network can send CSI-RS (Channel State Information-Reference Signal), and the terminal reports the appropriate PMI (Precoding Matrix Indicator) after measurement. Ultimately, the network decides to select the downlink transmission codebook.

[0094] In the downlink direction, mobility without RRC involvement is also called beam management. It is designed for the case where multiple beams cover a cell. Due to the small coverage area of ​​these narrow beams, it can be expected that the UE changes beams more frequently than changing cells. In order to reduce the signaling load of beam switching, it was decided that RRC signaling was not required to facilitate such changes. Instead, a signaling solution based on MAC CE (Medium Access Control Element) or DCI (Downlink Control Information) was introduced.

[0095] For beam management, SSB (Synchronization Signal Block) and L1-RSRP (Reference Signal Receiving Power) measurement reports on CSI-RS have been standardized. These measurements can then be transmitted to the serving cell via PUCCH (Physical Downlink Control Channel) or PUSCH (Physical Uplink Shared Channel), and the network can use these measurements to select which downlink beam will be used to transmit data.

[0096] The UE can be configured to perform measurements on CSI-RS and SSB. Taking SSB as an example, it is configured as a CSI-SSB resource set. The UE can then be configured to report L1-RSRP based on the SSB-Index list. The UE can be configured to report 1, 2 or 4 best SSBs, i.e. the SSB from the list with the highest L1-RSRP.

[0097] Since this RSRP reporting is designed for beam management, it is implicitly assumed that the UE can only be configured to report RSRP for SSBs within the serving cell. However, it is challenging to also include reporting configured SSB measurements in configured non-serving cells. The only thing required is to replace the SSB-Index with a number containing the PCI (Physical Cell Identifier). With this change, the UE can be configured to report RSRP also for SSBs in non-serving cells. This measurement can then be reported to the network using any PUCCH or PUSCH reporting that has been defined.

[0098] When the CU-DU separation architecture is used to support the NCR function, if the NCR needs to enter the inactive state, the following technical problems exist:

[0099] 1) gNB-DU will release all resources and cannot continue to maintain the corresponding time domain resources for the Backhaul link: Figure 6 As shown, in the current F1 protocol, the gNB-DU side will release all resources when the UE enters the inactive state. Therefore, if the base station side does not retain resources, the NCR will not be able to continue to amplify and forward the terminal signal;

[0100] 2) The gNB-DU side cannot know in advance that the NCR needs to enter the idle state, and cannot determine in advance whether the forwarding resources need to be retained: Since all forwarding plane resources in the current protocol are configured by the gNB-DU side, the gNB-CU side cannot know whether the gNB-DU side has configured forwarding resources. When the gNB-CU enters the non-idle state, the gNB-DU cannot update the configuration information in advance.

[0101] Based on the above requirements and reason analysis, the current 3GPP Rel-17 protocols cannot meet the design requirements of forwarding equipment, and new standardized methods are needed to enhance functions. In order to solve the above problems, relevant solutions are provided in the embodiments of the present application to meet the needs of network deployment and optimization, which are described in detail below.

[0102] According to an embodiment of the present application, a method embodiment of forwarding resource reservation is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0103] Figure 1 is a schematic diagram of a method flow for forwarding resource reservation applied to a base station separation entity provided in an embodiment of the present application, such as Figure 1 As shown, the method comprises the following steps:

[0104] Step S102, the base station separation entity determines whether the user is an authorized forwarding device according to whether the first interface request message sent by the base station concentration entity contains first indication information;

[0105] Step S104, the base station separation entity determines the backhaul link resource configuration, access link resource configuration, and backhaul link resource configuration of the forwarding device in the connected state, and in the inactive state, and sends the relevant resource configuration to the base station centralization entity and / or the forwarding device;

[0106] Step S106, the base station separation entity receives the first protection indication information and / or the second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station separation entity to be the base station side forwarding resources reserved by the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

[0107] The above forwarding device includes two parts: a control plane receiving unit (NCR-MT) and a forwarding control unit (NCR-FWD), wherein the control plane receiving unit is used to receive the first control information from the base station side through the control link, and the forwarding control unit is used to amplify and forward the signal between the base station and the terminal.

[0108] Based on the above solution, the base station centralized entity in the separation architecture can instruct the base station separation entity whether to reserve forwarding resources for the forwarding device, thereby reducing the interoperability problems between the base station centralized entity and the base station separation entity, thereby supporting the configuration of forwarding resources in the separation architecture, which is further introduced below.

[0109] The base station centralized entity determines from the core network whether the forwarding device is an authorized forwarding device, and notifies the base station separation entity whether the forwarding device is an authorized forwarding device through a first interface request message;

[0110] The base station separation entity determines whether the terminal is a forwarding device according to whether the first interface request message includes the first indication information (authorization authentication result); the specific steps are as follows.

[0111] The base station separation entity receives a first interface request message sent by the base station concentration entity; when the first interface request message includes an authorization authentication result of the forwarding device, the base station separation entity updates the authentication information list of the forwarding device. When the first interface request message does not include an authorization authentication result of the forwarding device, the base station separation entity confirms that the terminal is not a forwarding device.

[0112] When the base station separation entity receives the first interface request message containing the authorization authentication result, the method also includes: the base station separation entity configures the identity of the forwarding device for the forwarding device, and configures at least one of the following for the forwarding unit: backhaul link resource configuration, access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRCASN.1 format.

[0113] The above-mentioned backhaul link resource configuration includes at least one of the following: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version (such as Rel-15 / 16, Rel-17), a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version (such as Rel-15 / 16, Rel-17), an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

[0114] The above-mentioned access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

[0115] Among them, the periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each newly added periodic forwarding resource set configuration includes at least one of the following: a resource identifier, a resource period or a starting offset, and each periodic forwarding resource set configuration that needs to be released includes: a resource identifier.

[0116] The non-periodic beam indication information includes: non-periodic forwarding resource set configuration, wherein each non-periodic forwarding resource set configuration includes at least one of the following: newly added non-periodic resources, resource identifiers to be deleted, subcarrier spacing, bit width of beam numbers, bit size of downlink control information DCI range, and each newly added non-periodic resource includes at least one of the following: resource identifier, non-periodic subframe offset (0-14 subframe range), symbol offset, and forwarding time domain length (1-28 symbol range).

[0117] The semi-continuous beam indication information includes: newly added semi-continuous forwarding resource set configuration, semi-continuous forwarding resource set configuration that needs to be released, wherein each newly added semi-continuous forwarding resource set configuration includes at least one of the following: resource number, beam number (range 0-63), semi-continuous periodic subframe offset (range 0-14 subframes), symbol offset, semi-continuous forwarding time domain length (range 1-112 symbols), and each semi-continuous forwarding resource set configuration that needs to be released includes: resource number.

[0118] After the base station separation entity completes the configuration of the forwarding device according to the pre-configuration information, the method also includes: the base station separation entity sends a first interface response message to the base station centralized entity, wherein the first interface response message includes at least one of the following: the identity of the forwarding device, the backhaul link resource configuration, and the access link resource configuration.

[0119] If the identity of the forwarding device is included in the first interface response message, the base station centralized entity considers the identity of the forwarding device for the context of the user. If the access link resource configuration is included in the first interface response message, the base station centralized entity generates a corresponding first RRC message sent to the terminal according to the resource configuration in the access link;

[0120] In some embodiments of the present application, the method further includes: the base station separation entity generates a media access layer control unit MAC CE message according to the backhaul link resource configuration; and sends the MAC CE message to the forwarding control unit of the forwarding device.

[0121] For the beam configuration of the downlink backhaul link, generating a media access layer control unit MAC CE message includes: generating a first MAC CE message or a second MAC CE message according to the beam configuration of the downlink backhaul link, wherein the first MAC CE is used for the downlink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the second MAC CE is used for the downlink TCI status indication of the downlink backhaul link using the 3GPP Rel-15 version. The beam configuration.

[0122] For the beam configuration of the uplink backhaul link, generating the media access layer control unit MAC CE message also includes: generating a third MAC CE message or a fourth MAC CE message according to the beam configuration of the uplink backhaul link, wherein the third MAC CE message is used for the uplink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the fourth MAC CE message is used for the uplink TCI status indication of the uplink backhaul link using the 3GPP Rel-15 version. The beam configuration.

[0123] When the base station centralized entity needs to transfer the terminal to a non-idle state, the base station separation entity may be instructed to provide forwarding configuration resources in a non-idle state through a second interface request message including forwarding resource acquisition indication information;

[0124] The base station separation entity receives a second interface request message sent by the base station concentration entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

[0125] When the second interface request message includes forwarding resource acquisition indication information, the base station separation entity sends a second interface response message to the base station concentration entity, wherein the second interface response message includes periodic configuration resources of the forwarding resources, and the periodic configuration resources of the forwarding resources are encoded using RRC ASN.1.

[0126] When the base station centralized entity needs to switch the terminal to a non-idle state, the method also includes: the base station separation entity receives a third interface request message sent by the base station centralized entity, wherein the third interface request message is used to instruct the base station separation entity to release relevant configurations and logical links of the forwarding device.

[0127] The third interface request message includes: first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of the backhaul link and / or access link for the forwarding entity of the forwarding device.

[0128] Optionally, the third interface request message also includes: a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

[0129] When the base station separation entity receives a third interface request message containing the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link and beam resources involved in the downlink backhaul link.

[0130] Then, the base station separation entity indicates to the base station concentration entity through a third interface response message that the connection and configuration related to the related UE have been saved and / or released, as follows.

[0131] The base station separation entity sends a third interface response message to the base station centralized entity, wherein the third interface response message is used to indicate that the relevant configuration and logical link of the forwarding device of the base station centralized entity have been saved and / or released. And the base station separation entity sends the second RRC message in the third interface request message to the forwarding device through the air interface, wherein the forwarding device is used to forward resources according to the periodic configuration resources of the forwarding resources in the forwarding resource configuration information when the second RRC message contains forwarding resource configuration information, or stop forwarding resources when the second RRC message does not contain forwarding resource configuration information.

[0132] According to an embodiment of the present application, another method embodiment of forwarding resource reservation is also provided. Figure 7 is a schematic diagram of a method flow for forwarding resource reservation applied to a base station centralized entity according to an embodiment of the present application, such as Figure 7 As shown, the following steps are included:

[0133] Step S702, the base station centralized entity determines from the core network whether the forwarding device is an authorized forwarding device, and notifies the base station separation entity whether the forwarding device is an authorized forwarding device through a first interface request message;

[0134] In step S704, the base station centralized entity sends at least one of the first protection indication information and the second RRC information to the base station separation entity, wherein the first protection indication information is used to indicate the base station separation entity to be the base station side forwarding resources reserved by the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

[0135] Below Figure 7 The forwarding resource reservation method shown is further introduced.

[0136] The control plane receiving unit of the forwarding device initiates a random access process to the base station, and carries the forwarding device indication information to the base station in the RRC establishment completion message;

[0137] The base station centralized entity receives a radio resource control RRC establishment completion message sent by a control plane receiving unit of the forwarding device, wherein the RRC establishment completion message includes: forwarding device indication information.

[0138] After receiving the RRC establishment completion message, the method further includes: the base station centralized entity determines the core network element associated with the forwarding device authentication according to the forwarding device indication information; and sends the non-access layer NAS message in the RRC reconfiguration completion message to the core network element. The core network element has its related transmission address configured by the network management.

[0139] In this embodiment, the above-mentioned core network network element can be a core network access mobility management function AMF.

[0140] The base station centralized entity receives the authorization and authentication result of the forwarding device from the core network element, where the authorization and authentication result of the forwarding device is sent by the core network element through the NG interface message between the core network and the base station. That is, after the core network AMF receives the authorization and authentication result, it notifies the base station centralized entity about the authorization and authentication result of the forwarding device through the NG interface message between the core network and the base station.

[0141] In some embodiments of the present application, the method further includes: the base station centralized entity sends a first interface request message to the base station separation entity, wherein, when the first interface request message includes the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to update the authentication information list of the forwarding device. When the first interface request message does not include the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to confirm that the terminal is not a forwarding device.

[0142] When the base station separation entity receives the authorization authentication result included in the first interface request message, the base station separation entity will configure the identity of the forwarding device for the forwarding device, and configure at least one of the following for the forwarding unit: backhaul link resource configuration, access link resource configuration, wherein the backhaul link resource configuration and access link resource configuration are encoded in RRC ASN.1 format. After the base station separation entity completes the configuration of the forwarding device according to the pre-configuration information, the base station separation entity sends a first interface response message to the base station centralized entity.

[0143] The base station centralized entity receives a first interface response message sent by the base station separated entity, wherein the first interface response message includes at least one of the following: an identity of a forwarding device, a backhaul link resource configuration, and an access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRC ASN.1 format.

[0144] The above-mentioned backhaul link resource configuration includes at least one of the following: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version (such as Rel-15 / 16, Rel-17), a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version (such as Rel-15 / 16, Rel-17), an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

[0145] The above-mentioned access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

[0146] Among them, the periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each newly added periodic forwarding resource set configuration includes at least one of the following: a resource identifier, a resource period or a starting offset, and each periodic forwarding resource set configuration that needs to be released includes: a resource identifier.

[0147] The non-periodic beam indication information includes: non-periodic forwarding resource set configuration, wherein each non-periodic forwarding resource set configuration includes at least one of the following: newly added non-periodic resources, resource identifiers to be deleted, subcarrier spacing, bit width of beam numbers, bit size of downlink control information DCI range, and each newly added non-periodic resource includes at least one of the following: resource identifier, non-periodic subframe offset (0-14 subframe range), symbol offset, and forwarding time domain length (1-28 symbol range).

[0148] The semi-continuous beam indication information includes: newly added semi-continuous forwarding resource set configuration, semi-continuous forwarding resource set configuration that needs to be released, wherein each newly added semi-continuous forwarding resource set configuration includes at least one of the following: resource number, beam number (range 0-63), semi-continuous periodic subframe offset (range 0-14 subframes), symbol offset, semi-continuous forwarding time domain length (range 1-112 symbols), and each semi-continuous forwarding resource set configuration that needs to be released includes: resource number.

[0149] If the identity identification of the forwarding device is included in the first interface response message, the base station centralized entity considers the identity identification of the forwarding device for the context of the user. If the access link resource configuration is included in the first interface response message, that is, when the first interface response message includes the access link resource configuration, the base station centralized entity generates a corresponding first RRC message sent to the forwarding device based on the access link resource configuration.

[0150] In some embodiments of the present application, the method also includes: when the base station centralized entity is preparing to switch the forwarding device to a non-idle state, sending a second interface request message to the base station separation entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

[0151] When the second interface request message includes forwarding resource acquisition indication information, the base station separation entity sends a second interface response message to the base station concentration entity

[0152] The base station centralized entity receives a second interface response message returned by the base station separated entity in response to the second interface request message, wherein the second interface response message includes periodic configuration resources of forwarding resources, and the periodic configuration resources are encoded in RRC ASN.1 format.

[0153] When the base station centralized entity needs to switch the terminal to a non-idle state, the base station centralized entity sends a third interface request message to the base station separation entity, wherein the third interface request message is used to instruct the base station separation entity to release the relevant configuration and logical links of the forwarding device, and determine the second RRC message to be sent to the forwarding device control unit based on the received periodic configuration resources.

[0154] The third interface request message includes: first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of the backhaul link and / or access link for the forwarding entity of the forwarding device.

[0155] Optionally, the third interface request message also includes at least one of the following: a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

[0156] When the base station separation entity receives a third interface request message including the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link and beam resources involved in the downlink backhaul link. Then, the base station separation entity sends the third interface response message to the base station centralized entity.

[0157] The base station centralized entity receives a third interface response message returned by the base station separation entity in response to the third interface request message, wherein the third interface response message is used to indicate that relevant configuration and logical links of the base station centralized entity forwarding device have been saved and / or released.

[0158] It should be noted that the forwarding resource reservation method provided in this embodiment is similar to Figure 1 The forwarding resource reservation method shown is a method embodiment corresponding to each other. Therefore, the relevant explanations and descriptions of the above-mentioned forwarding resource reservation method are also applicable to the embodiments of the present application and will not be repeated here.

[0159] According to an embodiment of the present application, another embodiment of a forwarding resource reservation system is also provided. Figure 8 is a structural diagram of a forwarding resource reservation system provided according to an embodiment of the present application, such as Figure 8 As shown, including:

[0160] The base station centralized entity determines from the core network whether the forwarding device is an authorized forwarding device, and notifies the base station separation entity whether the forwarding device is an authorized forwarding device through a first interface request message;

[0161] The base station separation entity determines whether the user is an authorized forwarding device according to whether the first interface request message sent by the base station concentration entity includes first indication information;

[0162] The base station separation entity determines the backhaul link resource configuration of the forwarding device in the connected state, the access link resource configuration, and the backhaul link resource configuration in the inactive state, and sends the relevant resource configuration to the base station concentration entity and / or the forwarding device;

[0163] The base station separation entity receives the first protection indication information and / or the second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station side forwarding resources reserved by the base station separation entity for the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

[0164] The following is a further introduction to the process steps performed in the above forwarding resource reservation system. Fig. 9 1 is a schematic diagram of a signaling process when an NCR enters an inactive state according to an embodiment of the present application, and the process includes the following steps:

[0165] Step 1, the control plane receiving unit of the forwarding device initiates a random access process to the base station, and carries the forwarding device indication information to the base station in the RRC establishment completion message; that is, the control plane receiving unit of the forwarding device sends an RRC establishment completion message to the base station centralized entity, wherein the RRC establishment completion message includes: forwarding device indication information.

[0166] Step 2: The base station centralized entity determines the core network element associated with the forwarding device authentication based on the forwarding device indication information; and sends the non-access layer NAS message in the RRC reconfiguration completion message to the core network element, wherein the relevant address of the core network element is configured by the network management.

[0167] In this embodiment, the above-mentioned core network network element can be a core network access mobility management function AMF.

[0168] Step 3: After receiving the authorization and authentication result, the core network AMF sends the authorization and authentication result of the forwarding device to the base station centralized entity through the NG interface message between the core network and the base station.

[0169] Step 4: The base station centralized entity sends a first interface request message to the base station separation entity, wherein, when the first interface request message includes the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to update the authentication information list of the forwarding device. When the first interface request message does not include the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to confirm that the terminal is not a forwarding device.

[0170] Step 5, the base station separation entity receives the first interface request message. When the base station separation entity receives the first interface request message containing the authorization authentication result, it configures the identity of the forwarding device for the forwarding device, and configures at least one of the following for the forwarding unit: backhaul link resource configuration, access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRC ASN.1 format.

[0171] The above-mentioned backhaul link resource configuration includes at least one of the following: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version (such as Rel-15 / 16, Rel-17), a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version (such as Rel-15 / 16, Rel-17), an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

[0172] The above-mentioned access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

[0173] Among them, the periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each newly added periodic forwarding resource set configuration includes at least one of the following: a resource identifier, a resource period or a starting offset, and each periodic forwarding resource set configuration that needs to be released includes: a resource identifier.

[0174] The non-periodic beam indication information includes: non-periodic forwarding resource set configuration, wherein each non-periodic forwarding resource set configuration includes at least one of the following: newly added non-periodic resources, resource identifiers to be deleted, subcarrier spacing, bit width of beam numbers, bit size of downlink control information DCI range, and each newly added non-periodic resource includes at least one of the following: resource identifier, non-periodic subframe offset (0-14 subframe range), symbol offset, and forwarding time domain length (1-28 symbol range).

[0175] The semi-continuous beam indication information includes: newly added semi-continuous forwarding resource set configuration, semi-continuous forwarding resource set configuration that needs to be released, wherein each newly added semi-continuous forwarding resource set configuration includes at least one of the following: resource number, beam number (range 0-63), semi-continuous periodic subframe offset (range 0-14 subframes), symbol offset, semi-continuous forwarding time domain length (range 1-112 symbols), and each semi-continuous forwarding resource set configuration that needs to be released includes: resource number.

[0176] Step 6, after the base station separation entity completes the configuration for the forwarding device according to the pre-configuration information, the base station separation entity sends a first interface response message to the base station centralized entity, wherein the first interface response message includes at least one of the following: the identity of the forwarding device, the backhaul link resource configuration, and the access link resource configuration. If the identity of the forwarding device is included in the first interface response message, the base station centralized entity considers the identity of the forwarding device for the user context. If the access link resource configuration is included in the first interface response message, that is, when the first interface response message includes the access link resource configuration, the base station centralized entity generates a corresponding first RRC message to the forwarding device based on the access link resource configuration.

[0177] Step 7: The base station separation entity generates a media access layer control unit MAC CE message according to the backhaul link resource configuration, and sends the MAC CE message to the forwarding control unit of the forwarding device.

[0178] For the beam configuration of the downlink backhaul link, generating a media access layer control unit MAC CE message includes: generating a first MAC CE message or a second MAC CE message according to the beam configuration of the downlink backhaul link, wherein the first MAC CE is used for the downlink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the second MAC CE is used for the downlink TCI status indication of the downlink backhaul link using the 3GPP Rel-15 version. The beam configuration.

[0179] For the beam configuration of the uplink backhaul link, generating the media access layer control unit MAC CE message also includes: generating a third MAC CE message or a fourth MAC CE message according to the beam configuration of the uplink backhaul link, wherein the third MAC CE message is used for the uplink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the fourth MAC CE message is used for the uplink TCI status indication of the uplink backhaul link using the 3GPP Rel-15 version. The beam configuration.

[0180] Step 8, when the base station centralized entity is preparing to switch the forwarding device to a non-idle state, the base station separation entity sends a second interface request message to the base station separation entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

[0181] Step 9. When the second interface request message includes forwarding resource acquisition indication information, the base station separation entity sends a second interface response message to the base station centralized entity in response to the second interface request message, wherein the second interface response message includes periodic configuration resources of the forwarding resources, and the periodic configuration resources of the forwarding resources are encoded using RRC ASN.1.

[0182] Step 10, the base station centralized entity receives the second interface response message, and when the base station centralized entity needs to switch the terminal to a non-idle state, it sends a third interface request message to the base station separation entity, wherein the third interface request message is used to instruct the base station separation entity to release the relevant configuration and logical links of the forwarding device, and determine the second RRC message to be sent to the forwarding device control unit based on the received periodic configuration resources.

[0183] The third interface request message includes: first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of the backhaul link and / or access link for the forwarding entity of the forwarding device.

[0184] Optionally, the third interface request message also includes: a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

[0185] Step 11, when the base station separation entity receives a third interface request message containing the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link and beam resources involved in the downlink backhaul link.

[0186] Step 12, the base station separation entity sends a third interface response message to the base station centralized entity, wherein the third interface response message is used to indicate that the relevant configuration and logical link of the base station centralized entity forwarding device have been saved and / or released; and the second RRC message in the third interface request message is sent to the forwarding device through the air interface.

[0187] Step 13, when the second RRC message includes forwarding resource configuration information, the forwarding device forwards resources according to the periodic configuration resources of the forwarding resources in the forwarding resource configuration information, or stops forwarding resources when the second RRC message does not include forwarding resource configuration information.

[0188] It should be noted that the forwarding resource reservation system provided in this embodiment can be used to execute Figure 1 or Figure 7 The forwarding resource reservation method shown, therefore, the relevant explanations and instructions on the above-mentioned forwarding resource reservation method are also applicable to the embodiments of the present application and will not be repeated here.

[0189] Fig.10is a schematic diagram of a NCR deployment scenario in a separation architecture provided according to an embodiment of the present application, such as Fig.10 As shown, the network element nodes include: the core network control plane entity AMF, the base station centralized entity gNB-CU and the base station separation entity gNB-DU, and the network control repeater entity NCR, where NCR includes the control unit NCR-MT part and the forwarding unit NCR-Fwd part. Below, in this scenario, the present application scheme is further illustrated with examples combined with specific cases.

[0190] Case 1

[0191] This embodiment mainly describes the NCR authentication process in a split architecture, including the gNB-CU configuring the authentication result for the gNB-DU. The specific steps are as follows.

[0192] 1) The control plane receiving unit NCR-MT of the forwarding device initiates a random access procedure to the base station gNB, and sets the forwarding device indication information NCR indicator=true in the RRC Setup Completed message to the gNB;

[0193] 2) The gNB determines the target core network AMF (core network element associated with the forwarding device authentication) to which the NAS message carried in the RRC Setup Completed needs to be sent based on the forwarding indication information, and sends the NAS message to the corresponding core network AMF. The target core network AMF is configured with the target core network AMF address required for the forwarding device authentication by the network management;

[0194] 3) After receiving the authentication result, the core network AMF notifies the gNB-CU of the authorization authentication result of the forwarding device through the terminal initial context establishment request Initial UEContext Setup Request (NG interface message between the core network and the base station), that is, NCR validation = true;

[0195] 4) The gNB-CU notifies the gNB-DU of the authorization authentication result NCR validation=true through the context setup request UE Context Setup Request (first interface request message); since the UE Context Setup Request contains NCR validation=true, the gNB-DU updates the authentication information list of the terminal and considers the access terminal to be an NCR device.

[0196] Case 2

[0197] This case mainly describes the process of gNB-DU configuring beam resources for gNB-CU, including periodic forwarding resources of access link and forwarding resources of backhaul link. The specific steps are as follows.

[0198] 1) After the gNB-DU receives the authentication result contained in the UE Context Setup Request, it configures the NCR-RNTI of the forwarding device for the forwarding device according to the pre-configuration information, and configures the resource configuration of at least one of the backhaul link and the access link for the forwarding unit;

[0199] For the backhaul link resource configuration, it includes: the beam configuration of the downlink backhaul link, including the MAC CE version: Rel-17, which is used to indicate the downlink TCI state identifier of the downlink beam transmitted by the backhaul link; the beam configuration of the uplink backhaul link, including the MAC CE version Rel-17, which is used to indicate the uplink TCI state of the uplink beam transmitted by the backhaul link;

[0200] The access link resource configuration includes periodic beam indication information, including but not limited to the following: one or more newly added periodic forwarding resource set configurations, each resource set including: at least one of a resource identifier, a resource period, and a starting offset; one or more periodic forwarding resource set configurations that need to be released, each resource set including: a resource identifier;

[0201] 2) The gNB-DU sends at least one of the identity identification of the forwarding device, the resource configuration of the backhaul link, and the access link to the gNB-CU through the UE Context Setup Response (first interface response message);

[0202] 3) Since the identity of the forwarding device is included in the UE Context Setup Response, the gNB-CU considers the identity of the forwarding device for the user context. And the resource configuration in the access link is included in the UE Context Setup Response, the gNB-CU generates a corresponding first RRC message to the terminal according to the resource configuration in the access link;

[0203] 4) The gNB-DU generates corresponding MAC CE information according to the backhaul link resource configuration information and sends it to the forwarding device. A first MAC CE is generated for the beam configuration of the downlink backhaul link, and the first MAC CE is used for the Rel-17 NCR downlink backhaul link beam indication. A third MAC CE is generated for the beam configuration of the uplink backhaul link, and the third MAC CE is used for the Rel-17 NCR uplink backhaul link beam indication.

[0204] Case 3

[0205] This embodiment mainly describes the process in which the gNB-CU configures the gNB-DU to reserve the periodic forwarding resources of the access link and the forwarding resources of the backhaul link when the gNB-CU determines that the NCR enters the inactive state. The specific steps are as follows.

[0206] 1) When the gNB-CU needs to switch the terminal to a non-idle state, it may instruct the gNB-DU to provide forwarding configuration resources in a non-idle state through a UE Context Modification Request (second interface request message) containing forwarding resource acquisition indication information;

[0207] 2) If the forwarding resource acquisition indication information is included in the UE Context Modification Request, the gNB-DU provides the periodic configuration resources of the forwarding resources and sends the periodic configuration resources of the forwarding resources to the gNB-CU in the UE Context Modification Response (second interface response message);

[0208] 3) When the gNB-CU needs to transfer the terminal to a non-idle state, it instructs the gNB-DU to release the configuration and logical link related to the terminal through the UE Context Release Command (third interface request message), wherein the UE Context Release Command also includes: first protection indication information NCR-kept indicator, periodic forwarding resource configuration, and a second RRC message (e.g., RRC connection release message) sent to the terminal, wherein the first protection indication information is used to instruct the gNB-DU to reserve resources of the backhaul link and / or access link for NCR-Fwd; the second RRC message sent to the terminal includes forwarding resource configuration information NCR-FwdConfig of the forwarding device, and the forwarding resource configuration information only includes the periodic forwarding resource configuration;

[0209] 4) After the gNB-DU receives the UE Context Release Command, if the NCR-keptindicator is included, the gNB-DU still needs to save the user identifier C-RNTI, the forwarding device user identifier NCR-RNTI, the NCR authorization information, the resources involved in the backhaul link, and the resources involved in the access link when releasing the NCR context; the resources involved in the backhaul link include the beam resources involved in the uplink backhaul link and the beam resources involved in the downlink backhaul link;

[0210] 5) The gNB-DU indicates through the UE Context Release Command (third interface response message) that the connection and configuration related to the gNB-CU related to the UE have been saved and / or released, and the gNB-DU sends it to the NCR through the air interface after receiving the second RRC message;

[0211] 6) After the NCR receives the second RRC message, if it contains the forwarding resource configuration information NCR-FwdConfig, the NCR-Fwd continues to forward resources according to the periodic forwarding resources in the NCR-FwdConfig.

[0212] The present application scheme transmits forwarding resource configuration information in a separation architecture, supports retaining relevant forwarding resources for base station separation entities in an inactive state, avoids deleting relevant resources of all forwarding devices when entering an active state, thereby enabling the forwarding devices to continue forwarding relevant signals between the terminal and the base station in an inactive state, thereby ensuring user experience in weak coverage areas; the configuration of the underlying forwarding resources is obtained by defining a new acquisition process, solving the problem of how the base station centralized entity obtains the forwarding resource configuration and how to generate an RRC message; the present application scheme is a network-side solution that does not involve any impact on the terminal, has good forward compatibility, and is easy to deploy and implement in the network.

[0213] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0214] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0215] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0216] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0217] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0218] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0219] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A forwarding resource reservation method, applied to a base station separation entity, characterized in that: include: The base station separation entity determines whether the user is an authorized forwarding device according to whether the first interface request message sent by the base station concentration entity includes first indication information; The base station separation entity determines the backhaul link resource configuration, access link resource configuration, and backhaul link resource configuration of the forwarding device in the connected state, and the backhaul link resource configuration in the inactive state, and sends the relevant resource configuration to the base station centralized entity and / or the forwarding device; The base station separation entity receives first protection indication information and / or second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station separation entity to be the base station side forwarding resources reserved by the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

2. The forwarding resource reservation method according to claim 1, characterized in that: The method further comprises: Receiving the first interface request message sent by the base station centralized entity; In a case where the first interface request message includes the authorization authentication result of the forwarding device, the base station separation entity updates the authentication information list of the forwarding device.

3. The forwarding resource reservation method according to claim 2, characterized in that: The method further comprises: In a case where the first interface request message does not include the authorization authentication result of the forwarding device, the base station separation entity confirms that the terminal is not a forwarding device.

4. The forwarding resource reservation method according to claim 2, characterized in that: The method further comprises: The base station separation entity configures the identity of the forwarding device for the forwarding device, and configures at least one of the following for the forwarding unit: backhaul link resource configuration, access link resource configuration, wherein the backhaul link resource configuration and access link resource configuration are encoded in RRC ASN.1 format.

5. The forwarding resource reservation method according to claim 4, characterized in that: The backhaul link resource configuration includes: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

6. The forwarding resource reservation method according to claim 4, characterized in that: The access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

7. The forwarding resource reservation method according to claim 6, characterized in that: The periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each of the newly added periodic forwarding resource set configurations includes at least one of the following: a resource identifier, a resource period or a starting offset, and each of the periodic forwarding resource set configurations that needs to be released includes: a resource identifier.

8. The forwarding resource reservation method according to claim 6, characterized in that: The non-periodic beam indication information includes: non-periodic forwarding resource set configuration, wherein each of the non-periodic forwarding resource set configurations includes at least one of the following: newly added non-periodic resources, resource identifiers to be deleted, subcarrier spacing, bit width of beam numbers, bit size of downlink control information DCI range, and each of the newly added non-periodic resources includes at least one of the following: resource identifier, non-periodic subframe offset, symbol offset, and forwarding time domain length.

9. The forwarding resource reservation method according to claim 6, characterized in that: The semi-continuous beam indication information includes: a newly added semi-continuous forwarding resource set configuration, a semi-continuous forwarding resource set configuration that needs to be released, wherein each of the newly added semi-continuous forwarding resource set configurations includes at least one of the following: resource number, beam number, semi-continuous periodic subframe offset, symbol offset, and time domain length of semi-continuous forwarding, and each of the semi-continuous forwarding resource set configurations that need to be released includes: a resource number.

10. The forwarding resource reservation method according to claim 4, characterized in that: The method further comprises: The base station separation entity sends a first interface response message to the base station concentration entity, wherein the first interface response message includes at least one of the following: the identity of the forwarding device, the backhaul link resource configuration, and the access link resource configuration.

11. The forwarding resource reservation method according to claim 10, characterized in that: The method further comprises: The base station separation entity generates a media access layer control unit MAC CE message according to the backhaul link resource configuration; The MAC CE message is sent to a forwarding control unit of the forwarding device.

12. The forwarding resource reservation method according to claim 11, characterized in that: Generating a media access layer control unit MAC CE message includes: Based on the beam configuration of the downlink backhaul link, a first MAC CE message or a second MAC CE message is generated, wherein the first MAC CE is used for the downlink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the second MAC CE is used for the downlink TCI status indication of the downlink backhaul link using the 3GPP Rel-15 version.

13. The forwarding resource reservation method according to claim 12, characterized in that: Generating the media access layer control unit MAC CE message also includes: Based on the beam configuration of the uplink backhaul link, a third MAC CE message or a fourth MAC CE message is generated, wherein the third MAC CE message is used for the uplink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the fourth MAC CE message is used for the uplink TCI status indication of the uplink backhaul link using the 3GPP Rel-15 version.

14. The forwarding resource reservation method according to claim 11, characterized in that: The method further comprises: The base station separation entity receives a second interface request message sent by the base station concentration entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

15. The forwarding resource reservation method according to claim 14, characterized in that: The method further comprises: The base station separation entity sends a second interface response message to the base station concentration entity, wherein the second interface response message includes periodic configuration resources of forwarding resources, and the periodic configuration resources of forwarding resources are encoded using RRCASN.

1.

16. The forwarding resource reservation method according to claim 15, characterized in that: The method further comprises: The base station separation entity receives a third interface request message sent by the base station concentration entity, wherein the third interface request message is used to instruct the base station separation entity to release relevant configuration and logical links of a forwarding device.

17. The forwarding resource reservation method according to claim 16, characterized in that: The third interface request message includes: the first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of a backhaul link and / or an access link for a forwarding entity of a forwarding device.

18. The forwarding resource reservation method according to claim 17, characterized in that: The third interface request message also includes at least one of the following: a second RRC message sent to a forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

19. The forwarding resource reservation method according to claim 18, characterized in that: The method further comprises: When the received third interface request message contains the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link and beam resources involved in the downlink backhaul link.

20. The forwarding resource reservation method according to claim 19, characterized in that: The method further comprises: The base station separation entity sends a third interface response message to the base station concentration entity, wherein the third interface response message is used to indicate that relevant configuration and logical links of the forwarding device of the base station concentration entity have been saved and / or released.

21. The forwarding resource reservation method according to claim 19, characterized in that: The method further comprises: The base station separation entity sends the second RRC message in the third interface request message to the forwarding device through the air interface, wherein the forwarding device is used to forward resources according to the periodic configuration resources of the forwarding resources in the forwarding resource configuration information when the second RRC message includes the forwarding resource configuration information, or stop forwarding resources when the second RRC message does not include the forwarding resource configuration information.

22. A forwarding resource reservation method, applied to a base station centralized entity, characterized in that: include: The base station centralized entity determines from the core network whether the forwarding device is an authorized forwarding device, and notifies the base station separation entity whether the forwarding device is an authorized forwarding device through a first interface request message; The base station centralized entity will send at least one of the first protection indication information and the second RRC information to the base station separation entity, wherein the first protection indication information is used to indicate the base station side forwarding resources reserved by the base station separation entity for the forwarding control unit of the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

23. The forwarding resource reservation method according to claim 22, characterized in that: The method further comprises: The base station centralized entity receives a radio resource control RRC establishment completion message sent by a control plane receiving unit of the forwarding device, wherein the RRC establishment completion message includes: forwarding device indication information.

24. The forwarding resource reservation method according to claim 23, characterized in that: The method further comprises: The base station centralized entity determines the core network element associated with the forwarding device authentication according to the forwarding device indication information; The non-access layer NAS message in the RRC reconfiguration completion message is sent to the core network element.

25. The forwarding resource reservation method according to claim 24, characterized in that: The relevant transmission addresses of the core network elements are configured by the network management.

26. The forwarding resource reservation method according to claim 24, characterized in that: The method further comprises: The base station centralized entity receives the authorization and authentication result of the forwarding device from the core network element, wherein the authorization and authentication result of the forwarding device is sent by the core network element through the NG interface message between the core network and the base station.

27. The forwarding resource reservation method according to claim 26, characterized in that: The method further comprises: The base station centralized entity sends a first interface request message to the base station separation entity, wherein the first interface request message includes the authorization authentication result of the forwarding device, and the first interface request message is used to instruct the base station separation entity to update the authentication information list of the forwarding device.

28. The forwarding resource reservation method according to claim 27, characterized in that: In a case where the first interface request message does not include the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to confirm that the terminal is not a forwarding device.

29. The forwarding resource reservation method according to claim 27, characterized in that: The base station centralized entity receives a first interface response message sent by the base station separated entity, wherein the first interface response message includes at least one of the following: an identity identifier of the forwarding device, a backhaul link resource configuration, and an access link resource configuration, wherein the backhaul link resource configuration and the access link resource configuration are encoded in RRC ASN.1 format.

30. The forwarding resource reservation method according to claim 29, characterized in that: The backhaul link resource configuration includes: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

31. The forwarding resource reservation method according to claim 30, characterized in that: The access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

32. The forwarding resource reservation method according to claim 31, characterized in that: The periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each of the newly added periodic forwarding resource set configurations includes at least one of the following: a resource identifier, a resource period or a starting offset, and each of the periodic forwarding resource set configurations that needs to be released includes: a resource identifier.

33. The forwarding resource reservation method according to claim 31, characterized in that: The non-periodic beam indication information includes: non-periodic forwarding resource set configuration, wherein each of the non-periodic forwarding resource set configurations includes at least one of the following: newly added non-periodic resources, resource identifiers to be deleted, subcarrier spacing, bit width of beam numbers, bit size of downlink control information DCI range, and each of the newly added non-periodic resources includes at least one of the following: resource identifier, non-periodic subframe offset, symbol offset, and forwarding time domain length.

34. The forwarding resource reservation method according to claim 31, characterized in that: The semi-continuous beam indication information includes: a newly added semi-continuous forwarding resource set configuration, a semi-continuous forwarding resource set configuration that needs to be released, wherein each of the newly added semi-continuous forwarding resource set configurations includes at least one of the following: resource number, beam number, semi-continuous periodic subframe offset, symbol offset, and time domain length of semi-continuous forwarding, and each of the semi-continuous forwarding resource set configurations that need to be released includes: a resource number.

35. The forwarding resource reservation method according to claim 29, characterized in that: The method further comprises: In a case where the access link resource configuration is included in the first interface response message, the base station centralized entity generates a corresponding first RRC message sent to a forwarding device according to the access link resource configuration.

36. The forwarding resource reservation method according to claim 22, characterized in that: The method further comprises: When the base station centralized entity is preparing to switch the forwarding device to a non-idle state, it sends a second interface request message to the base station separation entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

37. The forwarding resource reservation method according to claim 36, characterized in that: The method further comprises: The base station centralized entity receives a second interface response message returned by the base station separated entity in response to the second interface request message, wherein the second interface response message includes periodic configuration resources of forwarding resources, and the periodic configuration resources are encoded in RRC ASN.1 format.

38. The forwarding resource reservation method according to claim 37, characterized in that: Sending the first protection indication information to the base station separation entity includes: The base station centralized entity sends a third interface request message to the base station separation entity, wherein the third interface request message is used to instruct the base station separation entity to release relevant configurations and logical links of the forwarding device, and determine a second RRC message to be sent to the forwarding device control unit based on the received periodic configuration resources.

39. The forwarding resource reservation method according to claim 38, characterized in that: The third interface request message includes: the first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of a backhaul link and / or an access link for a forwarding entity of a forwarding device.

40. The forwarding resource reservation method according to claim 39, characterized in that: The third interface request message also includes at least one of the following: a second RRC message sent to a forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

41. The forwarding resource reservation method according to claim 40, characterized in that: The method further comprises: The base station centralized entity receives a third interface response message returned by the base station separation entity in response to the third interface request message, wherein the third interface response message is used to indicate that relevant configurations and logical links of the base station centralized entity forwarding device have been saved and / or released.

42. A forwarding resource reservation system, characterized in that: include: The base station centralized entity determines from the core network whether the forwarding device is an authorized forwarding device, and notifies the base station separation entity whether the forwarding device is an authorized forwarding device through a first interface request message; The base station separation entity determines whether the user is an authorized forwarding device according to whether the first interface request message sent by the base station concentration entity includes first indication information; The base station separation entity determines the backhaul link resource configuration of the forwarding device in the connected state, the access link resource configuration, and the backhaul link resource configuration in the inactive state, and sends the relevant resource configuration to the base station centralization entity and / or the forwarding device; The base station separation entity receives first protection indication information and / or second RRC information sent by the base station centralized entity, wherein the first protection indication information is used to indicate the base station side forwarding resources reserved by the base station separation entity for the forwarding device in an inactive state, and the second RRC information includes the base station side forwarding resource configuration reserved in the inactive state.

43. The forwarding resource reservation system according to claim 42, characterized in that: The forwarding resource reservation system also includes a forwarding device, and a control plane receiving unit of the forwarding device sends an RRC establishment completion message to the base station centralized entity, wherein the RRC establishment completion message includes: forwarding device indication information.

44. The forwarding resource reservation system according to claim 43, characterized in that: The base station centralized entity determines the core network element associated with the forwarding device authentication according to the forwarding device indication information; and sends the non-access layer NAS message in the RRC reconfiguration completion message to the core network element.

45. The forwarding resource reservation system according to claim 44, characterized in that: The relevant addresses of the core network elements are configured by the network management.

46. ​​The forwarding resource reservation system according to claim 44, characterized in that: The core network element is used to send the authorization and authentication result of the forwarding device to the base station centralized entity through the NG interface message between the core network and the base station.

47. The forwarding resource reservation system according to claim 46, characterized in that: The base station centralized entity sends the first interface request message to the base station separation entity, wherein, when the first interface request message includes the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to update the authentication information list of the forwarding device.

48. The forwarding resource reservation system according to claim 47, characterized in that: In a case where the first interface request message does not include the authorization authentication result of the forwarding device, the first interface request message is used to instruct the base station separation entity to confirm that the terminal is not a forwarding device.

49. The forwarding resource reservation system according to claim 47, characterized in that: The base station separation entity receives the first interface request message, configures the identity of the forwarding device for the forwarding device, and configures at least one of the following for the forwarding unit: backhaul link resource configuration, access link resource configuration, wherein the backhaul link resource configuration and access link resource configuration are encoded in RRC ASN.1 format.

50. The forwarding resource reservation system according to claim 49, characterized in that: The backhaul link resource configuration includes: a beam configuration of a downlink backhaul link and a beam configuration of an uplink backhaul link, wherein the beam configuration of the downlink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, a downlink transmission configuration indication TCI status identifier for indicating a downlink beam for backhaul link transmission, and the beam configuration of the uplink backhaul link includes at least one of the following: a media access layer control unit MAC CE version, an uplink transmission configuration indication TCI status identifier for indicating an uplink beam for backhaul link transmission, and a sounding reference signal SRS resource indicator SRI.

51. The forwarding resource reservation system according to claim 49, characterized in that: The access link resource configuration includes at least one of the following: periodic beam indication information, non-periodic beam indication information, and semi-persistent beam indication information.

52. The forwarding resource reservation system according to claim 51, characterized in that: The periodic beam indication information includes at least one of the following: a newly added periodic forwarding resource set configuration, a periodic forwarding resource set configuration that needs to be released, wherein each of the newly added periodic forwarding resource set configurations includes at least one of the following: a resource identifier, a resource period or a starting offset, and each of the periodic forwarding resource set configurations that needs to be released includes: a resource identifier.

53. The forwarding resource reservation system according to claim 51, characterized in that: The non-periodic beam indication information includes: non-periodic forwarding resource set configuration, wherein each of the non-periodic forwarding resource set configurations includes at least one of the following: newly added non-periodic resources, resource identifiers to be deleted, subcarrier spacing, bit width of beam numbers, bit size of downlink control information DCI range, and each of the newly added non-periodic resources includes at least one of the following: resource identifier, non-periodic subframe offset, symbol offset, and forwarding time domain length.

54. The forwarding resource reservation system according to claim 51, characterized in that: The semi-continuous beam indication information includes: a newly added semi-continuous forwarding resource set configuration, a semi-continuous forwarding resource set configuration that needs to be released, wherein each of the newly added semi-continuous forwarding resource set configurations includes at least one of the following: resource number, beam number, semi-continuous periodic subframe offset, symbol offset, and time domain length of semi-continuous forwarding, and each of the semi-continuous forwarding resource set configurations that need to be released includes: a resource number.

55. The forwarding resource reservation system according to claim 49, characterized in that: The base station separation entity sends a first interface response message to the base station concentration entity, wherein the first interface response message includes at least one of the following: the identity of the forwarding device, the backhaul link resource configuration, and the access link resource configuration.

56. The forwarding resource reservation system according to claim 55, characterized in that: In a case where the first interface response message includes the access link resource configuration, the base station centralized entity generates a corresponding first RRC message sent to a forwarding device according to the access link resource configuration.

57. The forwarding resource reservation system according to claim 55, characterized in that: The base station separation entity generates a media access layer control unit MAC CE message according to the backhaul link resource configuration, and sends the MAC CE message to the forwarding control unit of the forwarding device.

58. The forwarding resource reservation system according to claim 57, characterized in that: The base station separation entity generates a first MAC CE message or a second MAC CE message according to the beam configuration of the downlink backhaul link, wherein the first MAC CE is used for the downlink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the second MAC CE is used for the downlink TCI status indication of the downlink backhaul link using the 3GPP Rel-15 version.

59. The forwarding resource reservation system according to claim 57, characterized in that: The base station separation entity generates a third MAC CE message or a fourth MAC CE message according to the beam configuration of the uplink backhaul link, wherein the third MAC CE message is used for the uplink backhaul link beam indication of the NCR of the 3GPP Rel-17 version, and the fourth MAC CE message is used for the uplink TCI status indication of the uplink backhaul link using the 3GPP Rel-15 version.

60. The forwarding resource reservation system according to claim 57, characterized in that: When the base station centralized entity is preparing to switch the forwarding device to a non-idle state, the base station separation entity sends a second interface request message to the base station separation entity, wherein the second interface request message includes forwarding resource acquisition indication information, and the forwarding resource acquisition indication information is used to instruct the base station separation entity to provide forwarding configuration resources in a non-idle state.

61. The forwarding resource reservation system according to claim 60, characterized in that: The base station separation entity sends a second interface response message to the base station concentration entity in response to the second interface request message, wherein the second interface response message includes periodic configuration resources of forwarding resources, and the periodic configuration resources of the forwarding resources are encoded using RRCASN.

1.

62. The forwarding resource reservation system according to claim 61, characterized in that: The base station centralized entity receives the second interface response message, and sends a third interface request message to the base station separation entity, wherein the third interface request message is used to instruct the base station separation entity to release the relevant configuration and logical links of the forwarding device, and determine the second RRC message to be sent to the forwarding device control unit based on the received periodic configuration resources.

63. The forwarding resource reservation system according to claim 62, characterized in that: The third interface request message includes: the first protection indication information, wherein the first protection indication information is used to instruct the base station separation entity to reserve resources of a backhaul link and / or an access link for a forwarding entity of a forwarding device.

64. The forwarding resource reservation system according to claim 63, characterized in that: The third interface request message also includes at least one of the following: periodic forwarding resource configuration, a second RRC message sent to the forwarding device, wherein the second RRC message includes: forwarding resource configuration information of the forwarding device, and the forwarding resource configuration information only includes the periodic configuration resources of the forwarding resources in the second interface response message.

65. The forwarding resource reservation system according to claim 63, characterized in that: When the received third interface request message contains the first protection indication information, the base station separation entity releases the forwarding device context and saves at least one of the following: user identifier C-RNTI, forwarding device user identifier NCR-RNTI, NCR authorization information, resources involved in the backhaul link, and resources involved in the access link, wherein the resources involved in the backhaul link include at least one of the following: beam resources involved in the uplink backhaul link and beam resources involved in the downlink backhaul link.

66. The forwarding resource reservation system according to claim 65, characterized in that: The base station separation entity sends a third interface response message to the base station centralized entity, wherein the third interface response message is used to indicate that the relevant configuration and logical link of the forwarding device of the base station centralized entity have been saved and / or released; and the second RRC message in the third interface request message is sent to the forwarding device via the air interface.

67. The forwarding resource reservation system according to claim 66, characterized in that: When the second RRC message includes the forwarding resource configuration information, the forwarding device performs resource forwarding according to the periodic configuration resources of the forwarding resources in the forwarding resource configuration information, or, when the second RRC message does not include the forwarding resource configuration information, stops forwarding resources.

Images