CN113973385B

CN113973385B - Method, system, device and storage medium for managing unauthorized frequency band resources

Info

Publication number: CN113973385B
Application number: CN202111608198.8A
Authority: CN
Inventors: 唐懿夫; 魏波; 周楠清; 邓珂; 张骞
Original assignee: Chengdu Airui Wireless Technology Co ltd
Current assignee: Chengdu Airui Wireless Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-03-01
Anticipated expiration: 2041-12-27
Also published as: CN113973385A

Abstract

The invention discloses a method, a system, a device and a storage medium for managing unlicensed frequency band resources, which are used for a distributed base station system, wherein the method comprises the following steps: when receiving an unauthorized frequency band release message from at least one radio frequency signal transceiver device, judging whether the unauthorized frequency band in the release message can be continuously maintained for use by the radio frequency signal transceiver device which sends the release message aiming at each release message; if the unlicensed frequency band can be continuously maintained in use by the radio frequency signal transceiver device that transmits the release message, the unlicensed frequency band is pre-occupied, and the radio frequency signal transceiver device that transmits the release message is instructed to directly use the unlicensed frequency band in the next communication. The technical scheme disclosed by the invention can enable the radio frequency signal transceiver in the distributed base station system to reduce the frequency for implementing LBT detection and the signaling interaction burden caused by the frequency, and simultaneously improves the access efficiency aiming at the unauthorized frequency band resource.

Description

Method, system, device and storage medium for managing unauthorized frequency band resources

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a system, an apparatus, and a storage medium for managing unlicensed frequency band resources for a distributed base station system.

Background

With the scarcity of frequency domain resources of the licensed band required for wireless communication, it is natural that communication using frequency domain resources of the unlicensed band becomes a promising solution. In an lte (long Term evolution) system, the 3GPP standardizes an LAA (License Assisted Access) technology. In Release-13, LAA technology is introduced, which requires the use of CA (Carrier Aggregation). The method comprises the steps that one authorized frequency band is used as a main carrier, and at least one unauthorized frequency band is used as an auxiliary carrier. Uplink and downlink communication can be performed in the licensed band, whereas only downlink communication can be performed in the unlicensed band. In Release-14, standardization of the elaa (enhanced laa) technology is done so that uplink communication on unlicensed bands is also supported. The communication service with higher priority is transmitted by using an authorized frequency band, and the communication service with lower priority is transmitted by using an unauthorized frequency band. After the cellular system evolves to NR (new radio), for the network architecture, service scenario and performance requirement of 5G, in addition to using the authorized frequency band as the Anchor frequency band to obtain the use of the Unlicensed frequency band, it is called NSA NR-U (Non standard one NR Unlicensed Non-independent NR Unlicensed frequency band access). NSA NR-U is a continuing evolution of LAA and eLAA based technologies over 5G. Meanwhile, the NR also supports SA NR-U (Standalone NR Unlicensed independent NR Unlicensed band access).

For the resource usage in the unlicensed frequency band, since it is no longer limited by the scheduling of the base station, theoretically any user can enjoy the usage right of the unlicensed frequency band in any communication system. Therefore, a core problem is how to reduce and eliminate interference from different users or different systems, for example, communication under the 5G standard and communication using WiFi need to avoid mutual interference. The classical approach to this problem is to use the LBT mechanism (Listen Before Talk) that requires detecting the idle-busy status of the frequency band that is desired to be used Before communication. If the frequency band is not used and is in an idle state, the frequency band can be used for communication. Otherwise, if the frequency band is used, it is in busy state, and it is not used for communication.

In the prior art, in order to improve the utilization rate of the unlicensed frequency band, after communication is finished, a radio frequency signal transceiver unit (RU) in the distributed base station system immediately releases unlicensed frequency band resources and prepares to perform next LBT detection, for a periodic communication service (e.g., sensor sharing) that needs to be frequently performed for a short time, the unlicensed frequency band resource release and the LBT detection need to be repeatedly performed, and corresponding signaling interaction needs to be frequently performed with a host unit (BBU/DU) in the distributed base station system. Even for some bursty aperiodic high priority traffic, LBT detection needs to be performed first if communication over the unlicensed band is needed. Therefore, the management method of the unlicensed frequency band resource in the prior art brings the burden of frequent implementation and signaling interaction of LBT detection, and the problem of increased communication delay caused by implementing LBT detection.

Disclosure of Invention

In view of the above drawbacks of the prior art, the present invention provides a method, a system, an apparatus, and a storage medium for managing unlicensed frequency band resources for a distributed base station system, so as to reduce the problem that radio frequency signal transceiver devices in the distributed base station system need to perform LBT detection frequently and the signaling interaction burden caused thereby, and reduce the problem that delay is increased due to LBT detection being required before high priority service is performed.

In order to achieve the above object, an embodiment of the present invention provides a method for managing unlicensed frequency band resources, where the method is used in a distributed base station system, and the method includes receiving an unlicensed frequency band release message from at least one radio frequency signal transceiver device; for each release message, the following operations are performed: judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal receiving and transmitting equipment which transmits the release message; if the unauthorized frequency band can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message, pre-occupying the unauthorized frequency band and indicating the radio frequency signal transceiver device which sends the release message to directly use the unauthorized frequency band in the next communication; and if the unlicensed frequency band cannot be continuously used by the radio frequency signal transceiver device which sends the release message, instructing the radio frequency signal transceiver device which sends the release message to perform LBT detection again before the next communication.

The embodiment of the invention also provides a management system of the unauthorized frequency band resource, which is used for a distributed base station system, and the system comprises: a receiving unit, configured to receive an unlicensed frequency band release message from at least one radio frequency signal transceiver; a judging unit, configured to perform the following operations for each release message: judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal receiving and transmitting equipment which transmits the release message; if the unauthorized frequency band can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message, pre-occupying the unauthorized frequency band and indicating the radio frequency signal transceiver device which sends the release message to directly use the unauthorized frequency band in the next communication; and if the unlicensed frequency band cannot be continuously used by the radio frequency signal transceiver device which sends the release message, instructing the radio frequency signal transceiver device which sends the release message to perform LBT detection again before the next communication.

The embodiment of the invention also provides a management method of the unauthorized frequency band resource, which is used for a distributed base station system, and the method comprises the following steps: receiving a pre-occupation indication responding to a release message sent by the user, wherein the pre-occupation indication at least comprises an instruction whether an unlicensed frequency band in the release message can be continuously maintained for use; determining from the instruction whether LBT detection needs to be re-implemented before the next communication.

The embodiment of the invention also provides a management device of the unauthorized frequency band resource, which is used for a distributed base station system, and the device comprises: a receiving module, configured to receive a pre-occupation indication in response to a release message sent by the receiving module, where the pre-occupation indication at least includes an instruction of whether an unlicensed frequency band in the release message can be continuously maintained for use; and the determining module is used for determining whether LBT detection needs to be implemented again before the next communication according to the instruction.

In the management method, system apparatus, and storage medium for unlicensed band resources for a distributed base station system provided by the present invention, when receiving an unlicensed band release message from at least one radio frequency signal transceiver device, it is determined for each release message whether the unlicensed band in the release message can be continuously maintained for use by the radio frequency signal transceiver device that sent the release message; if the unlicensed frequency band can be continuously maintained to be used by the radio frequency signal transceiver device that sends the release message, the unlicensed frequency band is pre-occupied, and the radio frequency signal transceiver device that sends the release message is instructed to directly use the unlicensed frequency band in the next communication, so that the radio frequency signal transceiver device in the distributed base station system can reduce the frequency of implementing LBT detection, and the signaling interaction burden brought thereby, and meanwhile, the access efficiency for the unlicensed frequency band resources is also improved.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.

Fig. 1 shows a schematic diagram of a protocol stack of a distributed base station.

Fig. 2A to fig. 2C respectively show schematic diagrams of networking topologies of the distributed base station system of the present invention.

Fig. 3 is a flowchart illustrating a method for managing unlicensed frequency band resources for a distributed base station system according to an embodiment of the present invention.

Fig. 4 is a flowchart illustrating an operation of a method for managing unlicensed band resources of a distributed base station system according to some embodiments of the present invention.

Fig. 5 is a flowchart illustrating an operation of a method for managing unlicensed band resources of a distributed base station system according to some embodiments of the present invention.

Fig. 6 is a flowchart illustrating an operation of a method for managing unlicensed band resources for a distributed base station system according to another embodiment of the present invention.

Fig. 7 is a block diagram illustrating a management system for unlicensed band resources of a distributed base station according to some embodiments of the present invention.

Fig. 8 is a block diagram illustrating a management system for unlicensed band resources of a distributed base station according to another embodiment of the present invention.

Fig. 9 is a block diagram illustrating an apparatus for managing unlicensed band resources for a distributed base station system according to some embodiments of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover a non-exclusive inclusion. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware circuits or integrated circuits, or in different networks and/or processor means and/or micro-indicator means.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in further detail with reference to the accompanying drawings and detailed description, in order to make the objects, features and advantages thereof more comprehensible.

Fig. 1 shows a schematic diagram of a protocol stack 100 of a physical layer (PHY layer), a medium access indication layer (MAC layer) and a radio resource indication layer (RRC layer) in an access network in a distributed base station system.

First, Radio Resource management, indication, and scheduling are performed by a Radio Resource Control (RRC) protocol. Specifically, the following functions are mainly included: broadcasting of system information; paging information (paging); establishing and releasing RRC (radio Resource control) connection; transmitting NAS (Non-Access Stratum) information including session management, user management, security management, and charging management; transmitting AS (Access stratum) information including radio bearer management, radio channel processing and encryption; transmission of user radio access capability; configuring wireless resources; measurement configuration and reporting; and a movement indication.

Then, an ip (internet Protocol) header of an upper layer is compressed and decompressed through a Packet Data Convergence Protocol (PDCP), and user Data is transmitted and maintained. Meanwhile, encryption and decryption of user data and an indication plane protocol are supported, so that the integrity of the data is guaranteed.

Subsequently, the segmentation and retransmission services are provided to the user through a Radio Link Control (RLC).

Next, the Media Access Control (MAC) defines the way data frames are propagated, physical addressing and logical topology on the medium. For data transmission, the MAC protocol first determines whether data can be transmitted, and if so, the data and indication information are transmitted to the physical layer in a prescribed format. For data reception, the MAC layer removes header information from the received data from the PHY and transmits the data to an upper layer.

Then, a data path is provided for the data side device through a Physical layer Protocol (PHY) to transmit data.

Finally, data is transmitted and received via a radio frequency link (RF chain).

Three units in a distributed base station system: the functional partitioning of BBU (or DU), rHub (or EU), and RU, as a general understanding, is generally believed that BBU (or DU) will implement the processing functions of RRC, PDCP, High RLC (High-RLC), Low RLC (Low-RLC), High MAC (High-MAC), Low MAC (Low-MAC), and High PHY (High-PHY) protocol modules, rHub will implement the processing functions of Low PHY (Low-PHY) protocol modules, and RU will implement the processing functions of Radio Frequency (RF) modules. But this division of functional blocks is not exclusive. For example, rHub can also perform High-PHY and MAC layer protocol processing.

Fig. 2A to fig. 2C respectively show networking topology diagrams of the distributed base station system of the present invention. In particular, the distributed base station system comprises at least one host unit (BBU/DU) configured to be able to perform at least the processing of data in communication and to perform the modulation and demodulation of baseband signals, as an example only one host unit being shown in the figure; at least one extension unit (rHub) connected to the host unit and configured to perform at least forwarding and merging of uplink and downlink data; at least one Remote Unit (RU) coupled to the expansion unit and configured to perform at least reception and transmission of uplink and downlink radio frequency signals; therefore, in the following description of the embodiments of the invention, a Remote Unit (RU) is referred to as a radio frequency signal transceiving apparatus. And at least one communication terminal (not shown) configured to communicate directly with the remote unit.

As shown in fig. 2A to fig. 2C in sequence, the structure of the distributed base station system in the embodiment of the present invention may be of the following three types: star distributed systems, chain distributed systems, and hybrid distributed systems. Specifically, as shown in fig. 2A, in a star distributed system, one BBU within the same cell connects one or more rhubs, each of which is connected to one or more RUs, and the rhubs may be interconnected; as shown in fig. 2B, in the chain-type distributed system, one BBU in the same cell is connected to one master rHub, the remaining multiple slave rhubs are communicated with the BBU through the rHub at the previous stage, each rHub is connected to one or more RUs, and the multiple rhubs may or may not have any difference in function (e.g., master rHub and slave rHub); as shown in fig. 2C, in the hybrid distributed system (i.e., combination of the star distributed system and the chain distributed system), one DU in the same cell is respectively connected to two rhubs, one rHub is connected to a third rHub other than the two rhubs, the third rHub is communicated with the DU through a previous-stage rHub, and each rHub is connected to one or more RUs.

The user equipment referred to in the embodiments of the present invention, also referred to as a communication terminal, is a device that provides voice and/or data connectivity to a user, and the communication terminal may be a mobile terminal, such as a mobile phone (or referred to as a "cellular" phone) and a computer having a mobile terminal, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, which exchanges voice and/or data with a radio access network. For example, the terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. Common communication terminals include, for example: the mobile terminal includes a mobile phone, a tablet computer, a notebook computer, a handheld computer, a Mobile Internet Device (MID), and a wearable device, such as a smart watch, a smart bracelet, a pedometer, and the like, but the embodiment of the present application is not limited thereto. A communication terminal may communicate with one or more core networks through a Radio Access Network (RAN).

In the prior art, in order to improve the utilization rate of the unlicensed frequency band, after the occupation of the unlicensed frequency band is finished (signal transmission is performed through the unlicensed frequency band until the LAA protocol specified occupation time is reached or the LAA protocol specified occupation time is reached, the occupied unlicensed frequency band is released. A host unit in a distributed base station system receives a release message of an unauthorized frequency band, wherein the release message comprises a signal system corresponding to the unauthorized frequency band with the occupation completed; and acquiring the signal system in the release message, issuing a starting indication message for acquiring the LBT detection of the signal system, and starting a new round of non-authorized frequency band preemption process for occupying and ending the signal system corresponding to the non-authorized frequency band.

Fig. 3 is a flowchart illustrating a method for managing unlicensed frequency band resources for a distributed base station system according to an embodiment of the present invention. The method for scheduling the unlicensed frequency band resource provided by the embodiment of the present invention may be applied to the distributed base station systems shown in fig. 2A to 2C.

Referring to fig. 3, a method for managing unlicensed frequency band resources in a distributed base station system according to an embodiment of the present invention includes the following steps:

step S10, receiving an unauthorized frequency band release message from at least one radio frequency signal transceiver;

step S20, for each release message, performs the following operations: judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal receiving and transmitting equipment which transmits the release message; if the unauthorized frequency band can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message, pre-occupying the unauthorized frequency band and indicating the radio frequency signal transceiver device which sends the release message to directly use the unauthorized frequency band in the next communication; and if the unlicensed frequency band cannot be continuously used by the radio frequency signal transceiver device which sends the release message, instructing the radio frequency signal transceiver device which sends the release message to perform LBT detection again before the next communication.

The steps S10 to S20 will be specifically described below.

In step S10, an unlicensed frequency band release message is received from at least one radio frequency signal transceiver device. In the embodiment of the invention, at least one radio frequency signal transceiver in the distributed base station system sends the occupied unauthorized frequency band release message to a host unit in the distributed base station system after the unauthorized frequency band communication is finished; a host unit in the distributed base station system receives a release message for preempting an unlicensed frequency band, where the release message includes, for example: the identification information of the radio frequency signal transceiver device sending the release message, the signal system to which the occupied and ended unauthorized frequency band belongs, the occupied and ended unauthorized frequency band information, and the like. And a host unit in the distributed base station system acquires the signal format and the unauthorized frequency band information in the release message, and judges whether the unauthorized frequency band in the release message can be continuously maintained for use by the radio frequency signal transceiver equipment which sends the release message so as to determine whether to send the starting indication message of the LBT of the signal format.

In step S20, to avoid frequent LBT detection and the signaling overhead burden caused thereby, the host unit in the distributed base station system determines, for each release message, whether the unlicensed frequency band in the release message can be continuously maintained for use by the radio frequency signal transceiver device that sends the release message, based on receiving the release message that occupies the unlicensed frequency band. Fig. 4 is a flowchart illustrating an operation of a method for managing unlicensed band resources of a distributed base station system according to some embodiments of the present invention. For example, as shown in fig. 4, the host unit of the distributed base station system determines whether the unlicensed frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver device that transmits the release message according to the usage of the unlicensed frequency bands of other radio frequency signal transceivers devices and the detection result of other radio frequency signal transceivers devices, and transmits the determination result to the radio frequency signal transceiver device that transmits the release message. If the judgment result is that: the radio frequency signal transceiver device that sends the release message can continue to maintain the use of the unlicensed frequency band resource, and then the host unit in the distributed base station system pre-occupies the unlicensed frequency band in the release message and sends an indication that the unlicensed frequency band can be maintained to the radio frequency signal transceiver device that sends the release message, so that the radio frequency signal transceiver device that sends the release message directly uses the unlicensed frequency band resource when communicating next time (i.e., skips the LBT detection process and directly uses the unlicensed frequency band resource to communicate with the UE). If the judgment result is that: if the radio frequency signal transceiver device that sent the release message cannot continue to maintain the use of the unlicensed frequency band resource, the host unit in the distributed base station system sends an indication that the unlicensed frequency band cannot be maintained to the radio frequency signal transceiver device that sent the release message, instructs the radio frequency signal transceiver device that sent the release message to release the unlicensed frequency band in the release message, and instructs the radio frequency signal transceiver device that sent the release message to perform LBT detection again before the next communication starts. When the radio frequency signal transceiver device has a communication requirement with the UE, according to the judgment result, if the radio frequency unit receives an indication that the unlicensed frequency band can be maintained, the radio frequency signal transceiver device skips the detection process of the LBT and directly uses the unlicensed frequency band resource to communicate with the UE; if the rf unit receives the indication that the unlicensed frequency band cannot be maintained, the rf signal transceiver needs to perform LBT detection again to obtain resources of the unlicensed frequency band.

The method for managing the unauthorized frequency band resource provided by the embodiment of the invention can realize that:

when receiving an unauthorized frequency band release message from at least one radio frequency signal transceiver device, judging whether the unauthorized frequency band in the release message can be continuously maintained for use by the radio frequency signal transceiver device which sends the release message aiming at each release message; if the unlicensed frequency band can be continuously maintained to be used by the radio frequency signal transceiver device sending the release message, the unlicensed frequency band is pre-occupied, and the radio frequency signal transceiver device sending the release message is instructed to directly use the unlicensed frequency band in next communication, so that the radio frequency signal transceiver device in the distributed base station system can reduce the frequency of implementing LBT detection, and the signaling interaction burden brought by the frequency, and meanwhile, the access efficiency aiming at the unlicensed frequency band resources is improved.

Optionally, for each release message, the determining whether the unlicensed frequency band in the release message can be continuously used by the radio frequency signal transceiver device that sent the release message includes: judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiving equipment which sends the release message according to the use condition of the unauthorized frequency bands of other radio frequency signal transceiving equipment except the radio frequency signal transceiving equipment which sends the release message; and/or judging whether the unlicensed frequency band in the release message can be continuously maintained for use by the radio frequency signal transceiver device which transmits the release message according to the LBT detection result of other radio frequency signal transceiver devices except the radio frequency signal transceiver device which transmits the release message; and/or judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message according to the priority of the communication service of the radio frequency signal transceiver device which sends the release message; and/or judging whether the unauthorized frequency band in the release message can be continuously maintained and used by the radio frequency signal transceiver equipment according to whether the communication service of the radio frequency signal transceiver equipment which sends the release message has periodicity; and/or judging whether the unlicensed frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiver device according to the utilization rate of the radio frequency signal transceiver device sending the release message to the unlicensed frequency band.

Further, the determining, for each release message, whether the unlicensed frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver device that transmits the release message according to the priority of the communication service of the radio frequency signal transceiver device that transmits the release message includes: judging the priority of the communication service of the radio frequency signal transceiving equipment which sends the release message, and if the priority is greater than or equal to a first preset threshold, judging that the unauthorized frequency band in the release message can be continuously maintained and used by the radio frequency signal transceiving equipment; and if the priority is smaller than a first preset threshold, judging that the unauthorized frequency band in the release message cannot be continuously maintained to be used by the radio frequency signal transceiver.

For example, the communication services of all the radio frequency signal transceiving equipment may be sorted from large to small according to the priority (e.g., 1 to 5), and the threshold of the priority of the communication service of the radio frequency signal transceiving equipment that transmits the release message is set to 3, and then the communication service with the priority greater than or equal to 3 is considered as a high-priority communication service, and based on this, it may be determined that the unlicensed frequency band in the release message can be continuously maintained and used by the radio frequency signal transceiving equipment. Otherwise, it may be determined that the unlicensed frequency band in the release message cannot be continuously maintained by the radio frequency signal transceiver device.

For example, the communication services of all the radio frequency signal transceiving equipment may be sorted from large to small according to the priority (e.g., 1 to 5), and the threshold of the priority of the communication service of the radio frequency signal transceiving equipment that sends the release message is set to be 5, at which point the radio frequency signal transceiving equipment that provides service for the communication service with the highest priority may maintain to use the unlicensed frequency band.

Further, the host unit in the distributed base station system may determine whether to allow the radio frequency signal transceiver device to continue to maintain the resource using the unlicensed frequency band by determining whether the communication service of the radio frequency signal transceiver device has periodicity. For example, for each release message, determining whether the unlicensed frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver device according to whether the communication service of the radio frequency signal transceiver device that sent the release message has periodicity includes: if the communication service of the radio frequency signal transceiver device sending the release message has periodicity, acquiring a time interval T between two communications of the radio frequency signal transceiver device, and further judging whether the time interval T between the two communications of the radio frequency signal transceiver device is less than or equal to a second preset threshold value; if the time interval T between the two communications is less than or equal to the second preset threshold, determining that the unlicensed frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver device; and if the time interval T between the two communications is greater than the second preset threshold, determining that the unauthorized frequency band in the release message cannot be continuously maintained in use by the radio frequency signal transceiver.

Specifically, for a periodic communication service, because the host unit in the distributed base station system can obtain the time interval T between two communications between the radio frequency signal transceiver and the UE, for the radio frequency signal transceiver with the minimum time interval T from the next communication, the radio frequency signal transceiver can maintain the unlicensed frequency band resource in the release message, thereby skipping detection of LBT and using the unlicensed frequency band resource in the release message more quickly.

Further, the host unit in the distributed base station system may further determine, in combination with the duration of the communication service of the radio frequency signal transceiver device, whether to allow the radio frequency signal transceiver device to continue to use the resource of the unlicensed frequency band. For example, for each release message, determining whether the unlicensed frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver device according to whether the communication service of the radio frequency signal transceiver device that sent the release message has periodicity further includes: if the time intervals between the two communications of the plurality of radio frequency signal transceiving equipment are smaller than or equal to the second preset threshold, executing the following operations: acquiring communication duration of each radio frequency signal transceiver in each period; for each of the plurality of radio frequency signal transceiving devices: judging whether the communication duration time of the radio frequency signal transceiver in each period is less than or equal to a third preset threshold value, and if the communication duration time of the radio frequency signal transceiver in each period is less than or equal to the third preset threshold value, judging that the unauthorized frequency band in the release message sent by the radio frequency signal transceiver can be continuously maintained and used by the radio frequency signal transceiver; if the communication duration of the radio frequency signal transceiver device in each period is greater than the third preset threshold, it is determined that the unlicensed frequency band in the release message sent by the radio frequency signal transceiver device cannot be continuously maintained in use by the radio frequency signal transceiver device.

Illustratively, when there are a plurality of radio frequency signal transceiving devices which are less than or equal to the second preset threshold from the next communication interval T, the determination is made based on obtaining the communication duration of each of the plurality of radio frequency signal transceiving devices in each period. In particular, for each of the plurality of radio frequency signal transceiving devices: judging whether the communication duration time of the radio frequency signal transceiver in each period is less than or equal to a third preset threshold value, and if the communication duration time of the radio frequency signal transceiver in each period is less than or equal to the third preset threshold value, judging that the unauthorized frequency band in the release message sent by the radio frequency signal transceiver can be continuously maintained and used by the radio frequency signal transceiver; otherwise, it is determined that the unlicensed frequency band in the release message sent by the radio frequency signal transceiver cannot be continuously maintained for use by the radio frequency signal transceiver.

Optionally, when there are a plurality of radio frequency signal transceiver devices that are less than or equal to the second preset threshold from the next communication interval T, the determination is made based on obtaining the communication duration of each of the plurality of radio frequency signal transceiver devices in each period. Specifically, for the plurality of radio frequency signal transceiver devices, selecting a radio frequency signal transceiver device with the smallest communication duration in each period, and indicating that an unlicensed frequency band in a release message sent by the radio frequency signal transceiver device can be continuously maintained for use by the radio frequency signal transceiver device; indicating that the unlicensed frequency band in the release message sent by the other radio frequency signaling device cannot be continuously maintained in use.

Further, if the host unit in the distributed base station system determines that the communication service of the radio frequency signal transceiver device that sends the release message does not have periodicity, the host unit further determines according to the occurrence probability of the communication service of the high priority level that is predicted to be performed by the user equipment corresponding to the radio frequency signal transceiver device that sends the release message; or judging according to the utilization rate of the current unauthorized frequency band in the release message by the radio frequency signal transceiver sending the release message, so as to prevent the radio frequency signal transceiver sending the release message from occupying the unauthorized frequency band in the release message but not actually carrying out communication.

It should be noted that the utilization ratio refers to a ratio of a time that the radio frequency signal transceiver device that sends the release message actually uses the unlicensed frequency band for communication to an occupied time that the radio frequency signal transceiver device that sends the release message occupies the unlicensed frequency band.

If the utilization rate is greater than or equal to a fourth threshold, determining that the unauthorized frequency band in the release message can be continuously maintained by the radio frequency signal transceiver; and if the utilization rate is smaller than a fourth preset threshold value, determining that the unauthorized frequency band in the release message cannot be continuously maintained to be used by the radio frequency signal transceiver.

Specifically, for aperiodic communication service, because the host unit in the distributed base station system cannot predict the next time of communication between the radio frequency signal transceiver device and the UE, it can be determined according to the occurrence probability of the communication service with high priority level predicted to be performed by the user equipment corresponding to the radio frequency signal transceiver device, for example, for data collection in a road traffic system, the probability of performing bursty high-priority communication service due to being predicted to be performed on a road segment with large traffic flow is higher, and therefore, the radio frequency signal transceiver device serving the road segment can maintain the resource using the unauthorized frequency band. In addition, it can also be determined whether to allow the radio frequency signal transceiver device to continue to maintain the resources of the unlicensed frequency band by using the utilization rate of the unlicensed frequency band in the release message by the radio frequency signal transceiver device. For example, in communication of the internet of things, for a communication service that uses a sensor to collect fault data of a system, in order to quickly use an unlicensed frequency band for communication, a radio frequency signal transceiver device that provides service for the sensor that frequently collects data may be allowed to maintain resources that use the unlicensed frequency band.

In order to facilitate management of states of all unlicensed frequency band resources in the system, in an embodiment of the present invention, the method further includes: acquiring state information of all unauthorized frequency bands in real time according to the unauthorized frequency band occupation information fed back by all the radio frequency signal transceiving equipment; and generating and maintaining an unauthorized frequency band global information table based on the acquired state information of all the unauthorized frequency bands so as to provide the unauthorized frequency band global state information when judging whether the unauthorized frequency bands in each release message can be continuously maintained to be used by the radio frequency signal transceiving equipment which sends the release message. Generally, the unlicensed band global information table may be managed and maintained by a host unit in the distributed base station system, or may be updated and maintained by the radio frequency signal transceiver device itself in the distributed base station system. Or the host unit in the distributed base station system and the radio frequency signal transceiving equipment in the distributed base station system are managed and maintained together.

TABLE 1 unlicensed band global information table

Illustratively, as shown in table 1, the unlicensed frequency band global information table includes at least one of the following three:

1. all the unauthorized frequency bands currently in an occupied state and identification information of radio frequency signal transceiving equipment occupying the unauthorized frequency bands;

2. all the unauthorized frequency bands currently in the pre-occupied state and identification information of the radio frequency signal transceiving equipment pre-occupying the unauthorized frequency bands;

3. all unlicensed bands not currently in an occupied state and not in a camped state.

As shown in fig. 5, for each release message, if the unlicensed frequency band can be continuously maintained by the radio frequency signal transceiver device that sends the release message, pre-occupying the unlicensed frequency band, and instructing the radio frequency signal transceiver device that sends the release message to directly use the unlicensed frequency band in the next communication includes: upstream equipment of the radio frequency signal transceiver equipment generates a pre-occupation indication and sends the pre-occupation indication to the radio frequency signal transceiver equipment, wherein the pre-occupation indication at least comprises an instruction of whether an unauthorized frequency band in the release message can be continuously maintained for use; and the radio frequency signal transceiver equipment updates the state information of the unlicensed frequency band based on the received camping indication so as to directly use the unlicensed frequency band in the next communication. It should be understood that the upstream device of the rf signal transceiving equipment may be a host unit in the distributed base station system, or may be an extension unit in the distributed base station system. The embodiments of the invention are not limited thereto.

It should be noted that, for each release message, only one piece of status information needs to be managed for the radio frequency signal transceiver device itself that transmits the release message. When the radio frequency signal transceiver device that transmits the release message does not perform communication but is indicated with the information of the pre-occupiable unlicensed frequency band resource, the radio frequency signal transceiver device that transmits the release message needs to record the information of the pre-occupiable unlicensed frequency band resource. Specifically, a certain unlicensed frequency band under a certain signal system is recorded as a frequency band that can be pre-occupied. When the radio frequency signal transceiver device sending the release message is in a communication state, or is not in a communication state and is not indicated with any information of the unlicensed frequency band resources that can be pre-occupied, the radio frequency signal transceiver device sending the release message does not need to manage any state information.

In addition, the determining, for each release message, whether the unlicensed frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver device that transmits the release message according to the usage of the unlicensed frequency bands of the other radio frequency signal transceiver devices except the radio frequency signal transceiver device that transmits the release message includes: determining whether other radio frequency signal receiving and transmitting equipment except the radio frequency signal receiving and transmitting equipment which transmits the release message occupies the unauthorized frequency band in the release message based on the unauthorized frequency band global information table; if the other radio frequency signal transceiving equipment except the radio frequency signal transceiving equipment which sends the release message does not occupy the unauthorized frequency band in the release message, generating a pre-occupation indication aiming at the unauthorized frequency band, and sending the pre-occupation indication to the radio frequency signal transceiving equipment so as to directly use the unauthorized frequency band in the next communication; otherwise, the radio frequency signaling device sending the release message is instructed to re-perform the LBT detection before the next communication.

As shown in fig. 6, in a case where a radio frequency signal transceiver device that is to implement a communication service with a high priority requests an unlicensed frequency band resource, all unlicensed frequency bands are in an occupied state or a camped state, and there is at least one unlicensed frequency band in the camped state, one unlicensed frequency band in the camped state is selected to be allocated to the radio frequency signal transceiver device that is to implement the communication service with the high priority based on the unlicensed frequency band global information table, and in a case where the selected unlicensed frequency band is still occupied before the radio frequency signal transceiver device that camped the unlicensed frequency band communicates next time, the radio frequency signal transceiver device that is camped on the unlicensed frequency band is instructed to perform LBT detection again before the next communication. Illustratively, the host unit of the distributed base station system selects one unlicensed frequency band in a pre-occupation state to be allocated to the radio frequency signal transceiver device that is to implement the communication service with the high priority based on the radio frequency signal transceiver devices of other users of the communication service with the high priority, updates the issued determination result or pre-occupation indication for maintaining use of the unlicensed frequency band, and then sends the determination result of whether the updated unlicensed frequency band can be maintained for use to the radio frequency signal transceiver device that sends the release message.

Further, the selecting an unlicensed frequency band in a pre-occupied state to be allocated to the radio frequency signal transceiver device that is to implement the communication service with high priority includes:

selecting an unlicensed frequency band in a camped on state according to at least one of the following ways:

(1) selecting according to the performance parameters of the user equipment corresponding to the communication service with high priority;

(2) selecting according to the time interval between the radio frequency transceiver corresponding to each pre-occupied unauthorized frequency band and the next communication;

(3) selecting according to the type of the respective communication service of the radio frequency transceiving equipment corresponding to each pre-occupied unauthorized frequency band;

(4) and selecting according to the utilization rate of the radio frequency transceiving equipment corresponding to each pre-occupied unlicensed frequency band to the unlicensed frequency band.

It should be noted that, the performance parameter of the user equipment in (1) above, for example, the communication system that the user equipment can support. The type of communication service in (3) above may be, in addition to the division of priority, division using a frequency band, for example, millimeter wave radar communication service of an automobile.

Specifically, the following specific examples are specifically included in the following steps of determining whether the unlicensed frequency band in each release message can be continuously used by the radio frequency signal transceiver device that transmits the release message according to the determination parameter or the restriction requirement:

example 1

When two radio frequency signal transceiving equipment (RU 1 and RU 2) under the host unit in the distributed base station system respectively carry out periodic communication services with the UE respectively served by the two radio frequency signal transceiving equipment by using the unlicensed frequency band, after the communication of the RU1 and the RU2 is finished, a release message for releasing the unlicensed frequency band is sent to the host unit. The host unit in the distributed base station system acquires: RU1 will communicate next 2 slots later and RU2 will communicate next 50 slots later. According to the above-mentioned determination whether the communication period T of the RU1 and the RU2 is less than or equal to the second preset threshold, for example, the second preset threshold is 10 timeslots, the host unit determines that the unlicensed band resource in the release message of the RU1 can be continuously maintained in use by the RU1, and the unlicensed band resource in the release message of the RU2 cannot be continuously maintained in use by the RU 2. For RU1, a host unit in the distributed base station system sends a pre-occupation indication to the RU1, where the pre-occupation indication at least includes an instruction of whether the unlicensed frequency band in the release message can be used continuously; RU1 skips the LBT detection procedure after 2 slots to communicate directly using the unlicensed frequency band based on the received camping indication. For RU2, since no camping indication is received, it performs LBT detection again after 50 slots to acquire unlicensed band resources.

Example two

When two radio frequency signal transceiving equipment (RU 1 and RU 2) under the host unit in the distributed base station system respectively carry out periodic communication services with the UE respectively served by the two radio frequency signal transceiving equipment by using the unlicensed frequency band, after the communication of the RU1 and the RU2 is finished, a release message for releasing the unlicensed frequency band is sent to the host unit. The host unit in the distributed base station system acquires: RU1 will communicate for 2 slots after 5 slots and RU2 will communicate for 20 slots after 2 slots. Judging according to whether the communication period T of the RU1 and the RU2 is less than or equal to a second preset threshold, for example, the second preset threshold is 10 slots, then both RU1 and RU2 satisfy the condition, in which case the judgment is further made in combination with the duration of the communication service; specifically, the radio frequency signal transceiver device that minimizes the duration of the communication service maintains the unlicensed frequency band in the release message. For RU1, a host unit in the distributed base station system sends a pre-occupation indication to the RU1, where the pre-occupation indication at least includes an instruction of whether the unlicensed frequency band in the release message can be used continuously; RU1 skips the LBT detection procedure after 5 slots based on the received camping indication to communicate directly using the unlicensed frequency band. For RU2, since no camping indication is received, it performs LBT detection again after 2 slots to acquire unlicensed band resources.

Example three

When two radio frequency signal transceiving equipment (RU 1 and RU 2) under the host unit in the distributed base station system respectively carry out communication services with the UE respectively served by the two radio frequency signal transceiving equipment by using the unauthorized frequency band, after the communication of the RU1 and the RU2 is finished, a release message for releasing the unauthorized frequency band is sent to the host unit. The master unit determines that the unlicensed band resource in the release message of RU1 can be continuously maintained for use by RU1 and the unlicensed band resource in the release message of RU2 cannot be continuously maintained for use by RU2, because RU1 performs high-priority communication service (the priority of communication service of RU1 is greater than or equal to the first preset threshold) and RU2 performs low-priority communication service (the priority of communication service of RU2 is less than the first preset threshold). For RU1, a host unit in the distributed base station system sends a pre-occupation indication to the RU1, where the pre-occupation indication at least includes an instruction of whether the unlicensed frequency band in the release message can be used continuously; RU1 skips the LBT detection procedure and communicates directly using the unlicensed frequency band when communication is needed, based on the received camping indication. For RU2, since no camping indication is received, it needs to perform LBT detection again to acquire unlicensed band resources when communication is needed.

Example four

Two radio frequency signal transceiving devices (RU 1 and RU 2) under the host unit in the distributed base station system respectively use the unlicensed frequency bands f1 and f2 to carry out communication service with the respectively served UE. Wherein f1 is an unlicensed frequency band in a 4G communication system, and f2 is an unlicensed frequency band in a 5G communication system. And after the communication between the RU1 and the RU2 is finished, sending a release message for releasing the unlicensed frequency band to the host unit. The host unit in the distributed base station system acquires: RU1 will communicate for 2 slots after 5 slots, and RU2 will communicate for 2 slots after 10 slots. Judging whether the communication period T of the RU1 and the RU2 is less than or equal to a second preset threshold, for example, if the second preset threshold is 10 timeslots, both RU1 and RU2 satisfy the condition, and further when the judgment cannot be made in combination with the duration of the communication service, the host unit in the distributed base station system sends a pre-occupation indication to both RU1 and RU2, where the pre-occupation indication at least includes an instruction whether the unlicensed frequency band in the release message can be used continuously; however, after the host unit transmits the preemption indication to both RU1 and RU2, when the radio frequency signal transceiver equipment RU3, which is to implement a communication service with a high priority, requests an unlicensed band resource, for example, after one slot, RU3 needs to communicate with a UE with a higher priority and last for 2 slots, and the UE served by it supports only communication of 4G system. Therefore, for the RU3, the host unit in the distributed base station system will first withdraw the pre-occupation indication of f1 in the 4G format of the RU1, i.e. indicate to the RU1 that f1 in the 4G format cannot be maintained in use. Then the host unit sends the preemption indication of f1 in 4G standard to RU3, and RU3 skips LBT detection process after 1 time slot and directly uses the unlicensed frequency band for communication based on the received preemption indication.

Example five

Two radio frequency signal transceiving devices (RU 1 and RU 2) under the host unit in the distributed base station system respectively use the unlicensed frequency bands f1 and f2 to carry out communication service with the respectively served UE. And after the communication between the RU1 and the RU2 is finished, sending a release message for releasing the unlicensed frequency band to the host unit. The host unit in the distributed base station system acquires: RU1 will communicate for 2 slots after 5 slots, and RU2 will communicate for 2 slots after 10 slots. Judging whether the communication period T of the RU1 and the RU2 is less than or equal to a second preset threshold, for example, the second preset threshold is 10 timeslots, and both RU1 and RU2 satisfy the condition, and then the host unit in the distributed base station system sends a pre-occupation indication to both RU1 and RU2, where the pre-occupation indication at least includes an instruction whether the unlicensed frequency band in the release message can be used continuously; however, after the host unit sends the preemption indication to both RU1 and RU2, when the radio frequency signaling device RU3, which is to implement communication traffic with high priority, requests unlicensed band resources, e.g., after one timeslot, RU3 needs to communicate with UE with higher priority and last for 2 timeslots, since RU2 will start communicating after a longer time interval, the host unit may take f2 on RU2 as the unlicensed band that RU3 can use and reclaim the preemption indication of f2 of RU2, i.e., indicate to RU2 that f2 cannot be maintained in use. The host unit then sends the camping indication of f2 to RU3, and RU3 skips the LBT detection procedure after 1 slot to communicate directly using the unlicensed band based on the received camping indication.

According to another aspect of the present invention, an embodiment of the present invention provides a management system for unlicensed frequency band resources of a distributed base station.

As shown in fig. 7, the system 200 for managing unlicensed band resources includes: a receiving unit 210, configured to receive an unlicensed frequency band release message from at least one radio frequency signal transceiver; a determining unit 220, configured to perform the following operations for each release message: judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal receiving and transmitting equipment which transmits the release message; if the unauthorized frequency band can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message, pre-occupying the unauthorized frequency band and indicating the radio frequency signal transceiver device which sends the release message to directly use the unauthorized frequency band in the next communication; and if the unlicensed frequency band cannot be continuously used by the radio frequency signal transceiver device which sends the release message, instructing the radio frequency signal transceiver device which sends the release message to perform LBT detection again before the next communication.

As shown in fig. 8, in another embodiment of the present invention, the system 200 for managing unlicensed frequency band resources further includes: a high priority traffic processing node 230, configured to, in a case that a radio frequency signal transceiver device that is to implement a communication traffic with a high priority requests an unlicensed frequency band resource, and all unlicensed frequency bands are in an occupied state or a pre-occupied state, and there is at least one unlicensed frequency band in the pre-occupied state, select one unlicensed frequency band in the pre-occupied state to be allocated to the radio frequency signal transceiver device that is to implement the communication traffic with the high priority, and, in a case that the selected unlicensed frequency band is still occupied before the radio frequency signal transceiver device that is pre-occupied with the unlicensed frequency band performs next communication, instruct the radio frequency signal transceiver device that is pre-occupied with the unlicensed frequency band to perform LBT detection again before the next communication.

Optionally, the high priority traffic processing node 230 is located in a host unit or an extension unit of the distributed base station system. The invention is not limited in this regard.

The management system for the unauthorized frequency band resource of the distributed base station provided by the embodiment of the invention can realize that:

It should be understood that other aspects and effects of the management system for unlicensed frequency band resources may refer to the content of the foregoing management method for unlicensed frequency band resources, and are not described herein again.

In another embodiment, a method for managing unlicensed frequency band resources is provided, where the method is used in a distributed base station system, and the method includes: receiving a pre-occupation indication responding to a release message sent by the user, wherein the pre-occupation indication at least comprises an instruction whether an unlicensed frequency band in the release message can be continuously maintained for use; determining from the instruction whether LBT detection needs to be re-implemented before the next communication.

Further, the method further comprises: and in the case that the instruction indicates that the unlicensed frequency band in the release message can be continuously maintained to be used, updating the state information of the unlicensed frequency band to directly use the unlicensed frequency band in the next communication.

Further, the method further comprises: in the case that the instruction indicates that the unlicensed frequency band in the release message cannot be continuously maintained for use, updating the state information of the unlicensed frequency band to implement LBT detection again before the next communication.

It should be understood that, for specific steps, other aspects and effects of the method for scheduling unlicensed frequency band resources, reference may be made to the contents of the foregoing embodiments, and details are not described here.

As shown in fig. 9, the apparatus 300 includes: a receiving module 310 and a determining module 320, where the receiving module 310 is configured to receive a pre-occupation indication in response to a release message sent by itself, where the pre-occupation indication at least includes an instruction of whether an unlicensed frequency band in the release message can be continuously maintained in use; the determining module 320 is configured to determine whether LBT detection needs to be re-implemented before the next communication according to the instruction.

It should be understood that the execution principle, other aspects and effects of each module in the management apparatus for unlicensed frequency band resources may refer to the contents of the foregoing embodiments, and are not described herein again.

In another embodiment, a computer readable storage medium is provided, on which a computer program is stored, and the computer program, when executed by a processor, implements any of the above-described methods for managing unlicensed frequency band resources for a distributed base station system.

For specific limitations and implementation manners of the above steps, reference may be made to an embodiment of a management method for unlicensed frequency band resources of a distributed base station system, which is not described herein again.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The method, the system, the apparatus and the storage medium for managing unlicensed frequency band resources for a distributed base station system according to the embodiments of the present invention are described in detail above, and a specific example is applied to describe the principle and the implementation manner of the present invention herein, and the description of the above embodiments is only used to help understanding the technical solution and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A management method for unlicensed frequency band resources is used for upstream equipment of radio frequency signal transceiving equipment of a distributed base station system, and is characterized in that the method comprises the following steps:

receiving an unauthorized frequency band release message from at least one radio frequency signal transceiver device;

for each release message, the following operations are performed:

judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal receiving and transmitting equipment which transmits the release message;

if the unauthorized frequency band can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message, pre-occupying the unauthorized frequency band and indicating the radio frequency signal transceiver device which sends the release message to directly use the unauthorized frequency band in the next communication;

and if the unlicensed frequency band cannot be continuously used by the radio frequency signal transceiver device which sends the release message, instructing the radio frequency signal transceiver device which sends the release message to perform LBT detection again before the next communication.

2. The method as claimed in claim 1, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously used by the radio frequency signal transceiver device that sent the release message comprises:

judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiving equipment which sends the release message according to the use condition of the unauthorized frequency bands of other radio frequency signal transceiving equipment except the radio frequency signal transceiving equipment which sends the release message; and/or

Judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiver equipment which sends the release message according to the LBT detection results of other radio frequency signal transceiver equipment except the radio frequency signal transceiver equipment which sends the release message; and/or

Judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiver device which sends the release message according to the priority of the communication service of the radio frequency signal transceiver device which sends the release message; and/or

Judging whether the unauthorized frequency band in the release message can be continuously maintained and used by the radio frequency signal transceiver equipment according to whether the communication service of the radio frequency signal transceiver equipment which sends the release message has periodicity; and/or

And judging whether the unauthorized frequency band in the release message can be continuously maintained to be used by the radio frequency signal transceiver device according to the utilization rate of the radio frequency signal transceiver device which sends the release message to the unauthorized frequency band.

3. The method as claimed in claim 2, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously used by the radio frequency signal transceiver device that sent the release message according to the priority of the communication service of the radio frequency signal transceiver device that sent the release message comprises:

determining a priority of communication traffic of the radio frequency signal transceiving equipment which transmits the release message,

if the priority is greater than or equal to a first preset threshold, determining that the unauthorized frequency band in the release message can be continuously maintained by the radio frequency signal transceiver;

and if the priority is smaller than a first preset threshold, judging that the unauthorized frequency band in the release message cannot be continuously maintained to be used by the radio frequency signal transceiver.

4. The method as claimed in claim 2, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously maintained by the radio frequency transceiver device according to whether the communication service of the radio frequency transceiver device that sent the release message has periodicity comprises:

if the communication service of the radio frequency signal transceiver device sending the release message has periodicity, acquiring a time interval between two communications of the radio frequency signal transceiver device, and further judging whether the time interval T between the two communications of the radio frequency signal transceiver device is less than or equal to a second preset threshold value;

if the time interval between the two communications is less than or equal to the second preset threshold, determining that the unauthorized frequency band in the release message can be continuously maintained in use by the radio frequency signal transceiver;

and if the time interval between the two communications is greater than the second preset threshold, determining that the unauthorized frequency band in the release message cannot be continuously maintained in use by the radio frequency signal transceiver.

5. The method as claimed in claim 4, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously maintained by the radio frequency signal transceiver device according to whether the communication service of the radio frequency signal transceiver device that sent the release message has periodicity further comprises:

if the time intervals between the two communications of the plurality of radio frequency signal transceiving equipment are smaller than or equal to the second preset threshold, executing the following operations:

acquiring communication duration of each radio frequency signal transceiver in each period;

for each of the plurality of radio frequency signal transceiving devices:

judging whether the communication duration time in each period is less than or equal to a third preset threshold value,

if the communication duration of the radio frequency signal transceiver device in each period is less than or equal to the third preset threshold, determining that the unauthorized frequency band in the release message sent by the radio frequency signal transceiver device can be continuously maintained for use by the radio frequency signal transceiver device;

if the communication duration of the radio frequency signal transceiver device in each period is greater than the third preset threshold, it is determined that the unlicensed frequency band in the release message sent by the radio frequency signal transceiver device cannot be continuously maintained in use by the radio frequency signal transceiver device.

6. The method as claimed in claim 2, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously maintained by the radio frequency transceiver device according to whether the communication service of the radio frequency transceiver device that sent the release message has periodicity further comprises:

if the communication service of the radio frequency signal transceiver device sending the release message does not have periodicity, further judging according to the occurrence probability of the communication service with high priority level predicted to be performed by the user equipment corresponding to the radio frequency signal transceiver device sending the release message; or

And judging according to the utilization rate of the radio frequency signal transceiver device sending the release message to the unauthorized frequency band in the release message, wherein the utilization rate is the ratio of the time of the radio frequency signal transceiver device sending the release message actually using the unauthorized frequency band for communication to the occupied time of the radio frequency signal transceiver device sending the release message occupying the unauthorized frequency band.

7. The method as claimed in claim 6, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously maintained by the radio frequency signal transceiver device according to the utilization rate of the radio frequency signal transceiver device sending the release message for the unlicensed band comprises:

if the utilization rate is greater than or equal to a fourth threshold, determining that the unauthorized frequency band in the release message can be continuously maintained by the radio frequency signal transceiver;

and if the utilization rate is smaller than a fourth preset threshold value, determining that the unauthorized frequency band in the release message cannot be continuously maintained to be used by the radio frequency signal transceiver.

8. The method for managing unlicensed band resources as claimed in claim 1, said method further comprising:

acquiring state information of all unauthorized frequency bands in real time according to the unauthorized frequency band occupation information fed back by all the radio frequency signal transceiving equipment;

and generating and maintaining an unauthorized frequency band global information table based on the acquired state information of all the unauthorized frequency bands so as to provide the unauthorized frequency band global state information when judging whether the unauthorized frequency bands in each release message can be continuously maintained to be used by the radio frequency signal transceiving equipment which sends the release message.

9. The method for managing unlicensed band resources of claim 8,

the unlicensed band global information table includes at least one of the following three:

all the unauthorized frequency bands currently in an occupied state and identification information of radio frequency signal transceiving equipment occupying the unauthorized frequency bands;

all the unauthorized frequency bands currently in the pre-occupied state and identification information of the radio frequency signal transceiving equipment pre-occupying the unauthorized frequency bands;

all unlicensed bands not currently in an occupied state and not in a camped state.

10. The method for managing unlicensed band resources according to claim 1,

each of the release messages includes: and the identification information of the radio frequency signal transceiver for sending the release message, the signal system to which the occupied unauthorized frequency band belongs and the occupied unauthorized frequency band information.

11. The method as claimed in claim 1, wherein for each release message, if the unlicensed frequency band can be continuously maintained by the radio frequency signal transceiver device that sent the release message, pre-occupying the unlicensed frequency band, and instructing the radio frequency signal transceiver device that sent the release message to directly use the unlicensed frequency band in the next communication comprises:

upstream equipment of the radio frequency signal transceiver equipment generates a pre-occupation indication and sends the pre-occupation indication to the radio frequency signal transceiver equipment, wherein the pre-occupation indication at least comprises an instruction of whether an unauthorized frequency band in the release message can be continuously maintained for use;

and the radio frequency signal transceiver equipment updates the state information of the unlicensed frequency band based on the received camping indication so as to directly use the unlicensed frequency band in the next communication.

12. The method as claimed in claim 2, wherein said determining, for each release message, whether the unlicensed band in the release message can be continuously maintained for use by the radio frequency signal transceiver device that sent the release message according to the usage of the unlicensed bands of the other radio frequency signal transceiver devices except the radio frequency signal transceiver device that sent the release message comprises:

determining whether other radio frequency signal receiving and transmitting equipment except the radio frequency signal receiving and transmitting equipment which transmits the release message occupies the unauthorized frequency band in the release message based on the unauthorized frequency band global information table;

if the other radio frequency signal transceiving equipment except the radio frequency signal transceiving equipment which sends the release message does not occupy the unauthorized frequency band in the release message, generating a pre-occupation indication aiming at the unauthorized frequency band, and sending the pre-occupation indication to the radio frequency signal transceiving equipment so as to directly use the unauthorized frequency band in the next communication;

otherwise, the radio frequency signaling device sending the release message is instructed to re-perform the LBT detection before the next communication.

13. The method for managing unlicensed band resources as claimed in claim 1, said method further comprising:

under the condition that a radio frequency signal transceiver device which is to implement the communication service with high priority requests resources of an unlicensed frequency band, all the unlicensed frequency bands are in an occupied state or a pre-occupied state, and at least one unlicensed frequency band in a pre-occupied state exists, one unlicensed frequency band in the pre-occupied state is selected to be allocated to the radio frequency signal transceiver device which is to implement the communication service with high priority based on the global information table of the unlicensed frequency bands, and under the condition that the selected unlicensed frequency band is still occupied before the radio frequency signal transceiver device which is pre-occupied with the unlicensed frequency band carries out LBT detection again before next communication, the radio frequency signal transceiver device which is pre-occupied with the unlicensed frequency band is instructed.

14. The method for managing unlicensed band resources as claimed in claim 13, wherein said selecting one unlicensed band in a pre-occupied state to be allocated to said radio frequency signal transceiver device that is to implement communication service with high priority includes:

selecting according to the performance parameters of the user equipment corresponding to the communication service with high priority;

selecting according to the time interval between the radio frequency transceiver corresponding to each pre-occupied unauthorized frequency band and the next communication;

selecting according to the type of the respective communication service of the radio frequency transceiving equipment corresponding to each pre-occupied unauthorized frequency band;

and selecting according to the utilization rate of the radio frequency transceiving equipment corresponding to each pre-occupied unlicensed frequency band to the unlicensed frequency band.

15. A management system for unlicensed frequency band resources, configured for an upstream device of a radio frequency signal transceiving device of a distributed base station, the management system for unlicensed frequency band resources comprising:

a receiving unit, configured to receive an unlicensed frequency band release message from at least one radio frequency signal transceiver;

a judging unit, configured to perform the following operations for each release message:

16. The system for managing unlicensed band resources as claimed in claim 15, wherein said system for managing unlicensed band resources further comprises:

and the high-priority service processing node is used for selecting one unlicensed frequency band in a pre-occupied state to be allocated to the radio-frequency signal transceiving equipment which is to implement the communication service with the high priority under the condition that the radio-frequency signal transceiving equipment which is to implement the communication service with the high priority requests resources of the unlicensed frequency band, all the unlicensed frequency bands are in an occupied state or a pre-occupied state, and at least one unlicensed frequency band in the pre-occupied state exists, and indicating the radio-frequency signal transceiving equipment which is to implement the communication service with the high priority to implement the LBT detection again before next communication under the condition that the selected unlicensed frequency band is still occupied before the radio-frequency signal transceiving equipment which is pre-occupied in the unlicensed frequency band is communicated next time.

17. A management method for unlicensed frequency band resources is used for radio frequency signal transceiving equipment of a distributed base station system, and the method comprises the following steps:

receiving a pre-occupation indication responding to a release message sent by the user, wherein the pre-occupation indication at least comprises an instruction whether an unlicensed frequency band in the release message can be continuously maintained for use;

determining whether LBT detection needs to be implemented again before the next communication according to the instruction;

and in the case that the instruction indicates that the unlicensed frequency band in the release message can be continuously maintained to be used, updating the state information of the unlicensed frequency band to directly use the unlicensed frequency band in the next communication.

18. The method for managing unlicensed band resources as claimed in claim 17, said method further comprising:

in the case that the instruction indicates that the unlicensed frequency band in the release message cannot be continuously maintained for use, updating the state information of the unlicensed frequency band to implement LBT detection again before the next communication.

19. An apparatus for managing unlicensed frequency band resources, configured to be used in a radio frequency signal transceiver device of a distributed base station system, the apparatus comprising:

a receiving module, configured to receive a pre-occupation indication in response to a release message sent by the receiving module, where the pre-occupation indication at least includes an instruction of whether an unlicensed frequency band in the release message can be continuously maintained for use;

a determining module, configured to determine whether LBT detection needs to be implemented again before next communication according to the instruction; and in the case that the instruction indicates that the unlicensed frequency band in the release message can be continuously maintained to be used, updating the state information of the unlicensed frequency band to directly use the unlicensed frequency band in the next communication.

20. A computer-readable storage medium, in which a computer program is stored, and when executed by a processor, the computer program implements the method for managing unlicensed frequency band resources according to any one of claims 1 to 14.

21. A computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the method for managing unlicensed frequency band resources according to any one of claims 17 to 18.