CN112839306B - Method, system and device for transmitting cluster broadcast message supported by 5G NR (noise generation and noise reduction) - Google Patents
Method, system and device for transmitting cluster broadcast message supported by 5G NR (noise generation and noise reduction) Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
Abstract
The invention discloses a method, a system and a device for transmitting a 5G NR (noise-and-noise ratio) supporting trunking broadcast message, belongs to the technical field of trunking broadcast of a 5GNR (generic navigation and signal) system, and aims to solve the technical problem of how to realize the support of the 5GNR on trunking service functions. The method is that a trunk-SearchSpace cell is added in a PDCCH-ConfigCommon cell, and a dedicated cluster service search space is added for a cluster service; and specifies that the trunk-SearchSpace cell is an optional IE. The problem that a 4G broadband trunking system cannot support a 5G typical application scene can be effectively solved, and the broadcast message of trunking service can be transmitted and can be better supported on a 5G NR system.
Description
Technical Field
The invention relates to the technical field of 5G NR system trunking broadcasting, in particular to a method, a system and a device for transmitting a 5G NR supporting trunking broadcasting message.
Background
The wireless broadband trunking system is developed for meeting the demand of commanding and dispatching of industry users, and is a special wireless communication system for specific industry application. In recent years, the wireless broadband trunking communication system has a wide application market in the fields of government and enterprise private networks, public security, emergency communication, rail transit, electric power, civil aviation, petrochemical industry, military and the like. The development of trunking communication system goes through the first generation analog trunking communication system and the second generation narrow-band digital trunking communication system, and has been developed to the stage of wireless broadband trunking communication system. The wireless broadband trunking communication system is a high-performance wireless dispatching system for sharing resources, and represents the development direction of a dedicated mobile communication system. The wireless broadband trunking communication system provides a special command and scheduling function for group users of a plurality of departments, units and the like by using technologies such as downlink channel sharing and the like. In recent years, a wireless broadband trunking communication system plays a very critical role in various industries, wherein in addition to the requirement of an industry user on a voice service, more and deeper requirements are gradually provided for big data services such as video monitoring, multimedia broadcasting and the like.
The wireless broadband trunking communication is developed for many years on the basis of a 4G TD-LTE (time Division Long Term evolution) system, is standardized for broadband trunking service functions such as trunking voice, trunking video and multimedia trunking dispatching, has the characteristics of flexible bandwidth, high spectrum efficiency, low time delay and high reliability, and can meet the requirements of professional users on voice trunking, broadband data, emergency command dispatching and the like.
Although the 4G wireless broadband trunking standard has been developed for many years, in some industrial application scenarios, there are still significant limitations. For example, in the three general application scenarios Enhanced Mobile Broadband (eMBB) defined by 5G, Ultra Reliable Low Latency Communication (uRLCC), and Massive machine type Communication (eMTC), the 4G wireless Broadband trunking system still has obvious disadvantages, so it is necessary to implement the related functions of trunking Communication based on the 5G Communication standard. The description herein is primarily directed to a 5G NR system supporting a trunked broadcast messaging mechanism.
Different from the 4G system, a core set (Control Resource set) is introduced into the 5G NR to improve the efficiency of pdcch (physical Downlink Control channel) resources, and meanwhile, the UE needs to acquire scheduling resources through the information of the core set and the Search Space. The search space of the NR is responsible for defining the initial symbol, the listening period and the associated CORESET. The CORESET includes a frequency domain position of the PDCCH and a number of symbols occupied by a time domain, each search space corresponds to one CORESET, and each CORESET may correspond to a plurality of search spaces.
The 5G NR protocol provides that PDCCH time-frequency resource scheduling conditions can be determined according to the current search space and the CORESET configuration associated with the search space. Specifically, the monitoring parameters and the initial symbol position are determined by the search space; the number of symbols and the frequency domain resources (frequency domain scheduling range) are defined by CORESET associated with the search space. That is to say, the accurate position of the PDCCH in the time domain is determined by the search space, but the UE only knows that the PDCCH is transmitted in the RB (resource block) range provided by the CORESET, but specifically on which RBs the PDCCH is transmitted, and needs to further search PDCCH information on the CORESET in different search spaces according to different types of rnti (radio Network temporary identity), and determine the CCE index of each PDCCH candidate in the CORESET, that is, the starting position and the number of CCEs, by performing blind detection on the PDCCH, that is, demodulating the PDCCH candidate set.
As can be seen from the above description of the existing 5G NR protocol, the protocol is not described for a trunking service scheduling mechanism, so that according to the existing protocol, the 5G NR cannot support a trunking service function.
Based on the above, how to implement the support of the cluster service function by the 5GNR is a technical problem to be solved.
Disclosure of Invention
The technical task of the present invention is to provide a method, a system and a device for 5G NR supporting trunking broadcast message transmission, so as to solve the problem of how to implement support of 5GNR on trunking service function.
In a first aspect, the present invention provides a method for transmitting a 5G NR supporting trunking broadcast message, wherein a trunk-search space cell is added in a PDCCH-ConfigCommon cell, so as to add a dedicated trunking service search space for trunking services; and specifies that the trunk-SearchSpace cell is an optional IE.
Preferably, for the trunk-SearchSpace resource of the trunking service, the cells sending the trunking service adopt the same time-frequency resource configuration.
Preferably, when the base station schedules the trunking service in the trunk-SearchSpace resource, the base station schedules the service synchronously between the cells.
Preferably, the trunk-SearchSpace cell type is SearchSpace id;
the trunk-Search Space cell is used for indicating the configuration of the dedicated CORESET and the dedicated Space of the trunking service through the corresponding Search Space id.
Preferably, when trunk-Search Space is not deployed, CORESET0 and Search Space0 are used.
In a second aspect, the present invention provides a system for 5G NR supporting trunking broadcast message transmission, wherein a trunk-SearchSpace cell is added to a PDCCH-ConfigCommon cell of the NR system, and a dedicated trunking service search space is added to a trunking service through the trunk-SearchSpace cell;
and the trunk-SearchSpace cell has the following provisions:
specifying that the trunk-SearchSpace cell is an optional IE;
each cell sending the cluster service adopts the same time-frequency resource allocation for the trunk-SearchSpace resource of the cluster service;
and when trunk-SearchSpace resource scheduling cluster service, synchronously scheduling the service among the cells.
Preferably, the trunk-SearchSpace cell type is SearchSpace id;
the trunk-Search Space cell is used for indicating the configuration of the dedicated CORESET and the dedicated Space of the trunking service through the corresponding Search Space id.
Preferably, when trunk-Search Space is not deployed, CORESET0 and Search Space0 are used.
In a third aspect, the present invention provides an apparatus comprising: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor is configured to invoke the machine-readable program to perform the method of any of the first aspects.
In a fourth aspect, the present invention provides a computer readable medium having stored thereon computer instructions which, when executed by a processor, cause the processor to perform the method of any of the first aspects.
The method, the system and the device for transmitting the cluster broadcast message supported by the 5G NR have the following advantages:
1. the problem that a 4G broadband trunking system cannot support a 5G typical application scene can be effectively solved, so that the broadcast message of trunking service can be transmitted and can be better supported on a 5G NR system;
2. each cell for sending the trunking service is specified, and for trunk-SearchSpace resources of the trunking service, the same time-frequency resource configuration is adopted, so that the problem of mutual interference of downlink signals in cell overlapping areas is solved when PDCCH (physical downlink control channel) messages of the trunking service are reduced and sent under a plurality of continuous coverage cells;
3. when a base station schedules trunking services in trunk-search space resources, the services are synchronously scheduled among cells, that is, for the same trunking service, the base station adopts the same scheduling frequency, allocates the same air interface time-frequency resources to the same trunking data service, so that the problem that a plurality of cells of a 4G wireless broadband trunking system interfere with each other in a PDCCH channel in an overlapping area can be solved, interference signals of PDCCHs of adjacent cells can be effectively changed into effective gains, the anti-interference capability of the system is improved, and the wireless performance of the system is optimized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for supporting a trunking broadcast message transmission by an NR according to an embodiment 15G.
Detailed Description
The present invention is further described in the following with reference to the drawings and the specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention, and the embodiments and the technical features of the embodiments can be combined with each other without conflict.
The embodiment of the invention provides a method, a system and a device for transmitting a cluster broadcast message supported by 5G NR (noise-and-noise ratio), which are used for solving the technical problem of how to realize the support of 5GNR on the cluster service function.
Example 1:
the invention discloses a method for transmitting a 5G NR (group broadcast) supporting cluster broadcast message, which comprises the following steps of:
s100, adding a trunk-SearchSpace cell in the PDCCH-ConfigCommon cell to add a dedicated cluster service search space for the cluster service;
s200, the trunk-SearchSpace information element is defined to be an optional IE.
Wherein, the trunk-SearchSpace cell type is SearchSpaceid. the trunk-Search Space cell is used for indicating the configuration of the dedicated CORESET and the dedicated Space of the cluster service through the corresponding Search Space id.
The syntax is described as "trunk-search space id option, - -Need S".
trunk-SearchSpace is specified as an optional IE, SearchSpace0 being used by default in the absence of configuration. I.e. when trunk-Search Space is not configured, core set0 and Search Space0 are used.
The 5G NR standard protocol specifies that the search space CORESET0 for SIB1(System Information Block Type 1) scheduled DCI is determined by the 8-bit set IE (Information element) of pdcch-ConfigSIB1 in the MIB. Other Search spaces of the ue (user equipment) are configured by corresponding RRC (radio Resource control) signaling, that is, two sets of RRC IEs are used in the NR design to define and configure the core set and the Search Space, respectively, so as to perform flexible Resource configuration for different service types, where the core set determines the total time-frequency Resource that can be used, and the Search Space determines the start symbol, the monitoring period, and the associated information such as the core set.
Wherein, the control resource Secretzero and the searchSpacezero respectively correspond to the configuration of CORESET0 and SearchSpace0, and are determined by pdcch-ConfigSIB1 in MIB (Master Information Block). The 5G NR system can be configured with up to 11 additional CORESETs (including CORESET0 up to 12), and default to use the CORESET0 associated with SSB when not in use. In addition, as follows:
SearchSpace ib1, SearchSpace other SystemInformation, pagingSearchSpace and ra-SearchSpace in the search space IE are optional IEs, SearchSpace0 being used by default in the absence of configuration. I.e. when PDCCH-Common is not configured in the SA scenario, CORESET0 and Search Space0 are used. And the UE-level PDCCH-Config IE group is included in BWP configuration, where each BWP is configured with a maximum of 3 CORESET and 10 SearchSpace.
The SIBI message in the 5G NR system of this embodiment is defined as follows:
in order to reduce the PDCCH message of the trunking service and to solve the problem that downlink signals interfere with each other in the cell overlapping area when the PDCCH message is sent in multiple continuous coverage cells, as an improvement of this embodiment, each cell for sending the trunking service is specified, and the same time-frequency resource configuration is adopted for the trunk-SearchSpace resource of the trunking service.
In order to change the sending of the interference signal of each cell of the trunking service into a gain in the overlapping coverage area, as a further improvement of this embodiment, when the base station schedules the trunking service in the trunk-SearchSpace resource, the base station performs synchronous scheduling on the service among the cells. That is, for the same cluster service, the base station uses the same scheduling frequency to allocate the same air interface time frequency resource to the same cluster data service.
Example 2:
in the system for transmitting the 5G NR supporting the trunking broadcast message, a trunk-SearchSpace cell is added in a PDCCH-ConfigCommon cell of the NR system, and a dedicated trunking service search space is added for trunking service through the trunk-SearchSpace cell.
And the trunk-SearchSpace cell has the following provisions:
(1) specifying that the trunk-SearchSpace cell is an optional IE;
(2) each cell sending the cluster service adopts the same time-frequency resource allocation for the trunk-SearchSpace resource of the cluster service;
(3) and when trunk-SearchSpace resource scheduling cluster service, synchronously scheduling the service among the cells.
Wherein, the trunk-SearchSpace cell type is SearchSpaceid; the trunk-Search Space cell is used for indicating the configuration of the dedicated core set and the dedicated Space of the cluster service through the corresponding Search Space id.
When the trunk-Search Space is not configured, CORESET0 and Search Space0 are used.
The system for transmitting the 5G NR supporting trunking broadcast message disclosed by the embodiment 1 follows the method for transmitting the 5G NR supporting trunking broadcast message, and can realize the trunking service function of the 5G NR system.
Example 3:
an embodiment of the present invention further provides an apparatus, including: at least one memory and at least one processor; the at least one memory for storing a machine-readable program; the at least one processor is configured to call the machine-readable program to execute the method disclosed in embodiment 1 of the present invention.
Example 4:
an embodiment of the present invention further provides a computer-readable medium, where a computer instruction is stored on the computer-readable medium, and when the computer instruction is executed by a processor, the processor is caused to execute the method disclosed in embodiment 1 of the present invention. Specifically, a system or an apparatus equipped with a storage medium on which software program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, optical disks (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion unit connected to the computer, and then causes a CPU or the like mounted on the expansion board or the expansion unit to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the above-described embodiments.
While the invention has been shown and described in detail in the drawings and in the preferred embodiments, it is not intended to limit the invention to the embodiments disclosed, and it will be apparent to those skilled in the art that various combinations of the code auditing means in the various embodiments described above may be used to obtain further embodiments of the invention, which are also within the scope of the invention.
Claims (4)
1.5G NR supports the method that the trunking broadcast message sends, characterized by that increase the trunk-Search Space cell in PDCCH-ConfigCommon cell, increase the exclusive trunking service Search Space for trunking service, the trunk-Search Space cell type is Search Space id, the trunk-Search Space cell role is that it indicates the exclusive CORESET of trunking service and Search Space configuration through its correspondent Search Space id, the syntax is described as "trunk-Search Space id OPTIONAL, - -Need S"; and specifying that the trunk-Search Space cell is optional IE, and using CORESET0 and Search Space0 when trunk-Search Space is not configured;
in order to reduce the PDCCH message of the trunking service and solve the problem that downlink signals are mutually interfered in cell overlapping areas when the PDCCH message is sent in a plurality of continuous coverage cells, each cell for sending the trunking service is specified, and the same time-frequency resource configuration is adopted for trunk-SearchSpace resources of the trunking service;
in order to change the interference signal of each cell for sending the trunking service into gain in the overlapping coverage area, when the base station schedules the trunking service in the trunk-SearchSpace resource, the base station schedules the service synchronously among the cells, that is, for the same trunking service, the base station adopts the same scheduling frequency and allocates the same air interface time-frequency resource to the same trunking data service.
2.5G NR supports the system that the trunking broadcast message sends, characterized by that there is trunk-SearchSpace cell in PDCCH-ConfigCommon cell of the said NR system that increases, increase the exclusive trunking service search space for trunking service through the said trunk-SearchSpace cell;
and the trunk-SearchSpace cell has the following provisions:
specifying that the trunk-SearchSpace cell is an optional IE;
each cell sending the cluster service adopts the same time-frequency resource allocation for the trunk-SearchSpace resource of the cluster service;
when trunk-SearchSpace resource is used for dispatching cluster services, the services are synchronously dispatched among all the cells;
the trunk-SearchSpace cell type is SearchSpaceid;
the trunk-Search Space cell is used for indicating the configuration of a dedicated CORESET and a Search Space of the trunking service through the corresponding Search Space id;
when the trunk-Search Space is not configured, CORESET0 and Search Space0 are used.
3. An electronic device, comprising: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor, configured to invoke the machine readable program, to perform the method of claim 1.
4. A computer readable medium having stored thereon computer instructions which, when executed by a processor, cause the processor to perform the method of claim 1.
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