CN109728884B - Cluster data transmission method and device - Google Patents
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Abstract
The embodiment of the invention provides a cluster data transmission method and equipment, wherein the method comprises the following steps: a core network server receives capability information reported by each member terminal in a group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal; the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times; and the core network server sends the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending. The method and the equipment provided by the embodiment of the invention can improve the edge coverage of the LTE system.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a cluster data transmission method and equipment.
Background
In the prior art, data packets of an LTE voice service are usually small and delay sensitive, and if dynamic scheduling is adopted, a large amount of Physical Downlink Control Channels (PDCCHs) are wasted. In order to reduce the overhead of the physical downlink control channel, Semi-Persistent Scheduling (SPS for short) is introduced to LTE to carry voice services. The SPS adopts periodic resource allocation to reduce the overhead of the PDCCH, SPS high-layer parameters (resource allocation intervals, SPS HARQ process number and the like) are configured to the UE through RRC, and the physical layer resources (PRB, MCS and the like) used by the SPS are informed by using the PDCCH control channel only when the SPS is activated or released.
When the downlink SPS bears the point-to-point service, the retransmission of the data is supported, wherein the data is firstly transmitted on the SPS and is dynamically scheduled for retransmission, but in the downlink SPS bears the point-to-multipoint trunking service, because a feedback channel of an Acknowledgement Character (ACK) and a Negative Acknowledgement Character (NACK) is not arranged in LTE, the trunking service has no retransmission mechanism, and the coverage of the system edge is poor.
Disclosure of Invention
The embodiment of the invention provides a cluster data transmission method and equipment, which are used for improving the edge coverage of an LTE system.
A first aspect of the embodiments of the present invention provides a method for cluster data transmission, where the method includes:
a core network server receives capability information reported by each member terminal in a group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal;
the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times;
and the core network server sends the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending.
Optionally, the configuring, by the core network server, SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group includes:
and the core network server configures SPS retransmission information of the group based on the minimum SPS retransmission times supported by the member terminals in the group.
Optionally, the configuring, by the core network server, SPS retransmission information of the group based on the minimum SPS retransmission number supported by the member terminals in the group includes:
configuring the minimum SPS retransmission times supported by the member terminals in the group as second SPS retransmission times of the group;
and configuring the SPS resource allocation interval corresponding to the group based on the second SPS retransmission times of the group.
Optionally, the capability information reported by each member terminal in the group further includes: encoding format;
the method further comprises the following steps:
the core network server sends the coding format reported by each member terminal in the group to a cluster server;
receiving one or more encoding formats of the user plane data of the group determined by the cluster server according to the encoding format of each member terminal;
wherein the encoding format includes any one of: a narrowband speech coding (NVOC) format, an adaptive multi-rate speech coding (AMR) format.
Optionally, the method further includes:
when the core network server receives the speaking right application of the member terminal, the core network server sends the encoding format carried in the speaking right application to the cluster server;
when the cluster server grants the speaking right of the member terminal, sending the encoding format of the member terminal returned by the cluster server to the member terminal;
and sending the coding format carried in the downlink establishing signaling of the group returned by the cluster server to the base station corresponding to the group.
Optionally, the method further includes:
and the core network server configures a single Physical Radio Bearer (PRB) for the uplink and/or downlink services of the group.
A second aspect of the embodiments of the present invention provides a core network server, including:
the first receiving module is used for receiving capability information reported by each member terminal in the group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal;
the configuration module is used for configuring SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times;
and the first sending module is used for sending the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending.
Optionally, the configuration module is configured to: and the core network server configures SPS retransmission information of the group based on the minimum SPS retransmission times supported by the member terminals in the group.
Optionally, the configuration module is specifically configured to:
configuring the minimum SPS retransmission times supported by the member terminals in the group as second SPS retransmission times of the group;
and configuring the SPS resource allocation interval corresponding to the group based on the second SPS retransmission times of the group.
Optionally, the capability information reported by each member terminal in the group further includes: encoding format;
the core network server further includes:
the second sending module is used for sending the coding format reported by each member terminal in the group to the cluster server;
a second receiving module, configured to receive one or more encoding formats of the user plane data of the group, where the encoding formats of the group user plane data are determined by the cluster server according to the encoding formats of the member terminals;
wherein the encoding format includes any one of: a narrowband speech coding (NVOC) format, an adaptive multi-rate speech coding (AMR) format.
Optionally, the core network server further includes:
a third sending module, configured to send, when receiving a speaking right application from the member terminal, an encoding format carried in the speaking right application to the cluster server;
the fourth sending module is used for sending the coding format of the member terminal returned by the cluster server to the member terminal when the cluster server grants the speaking right of the member terminal;
and a fifth sending module, configured to send the coding format carried in the downlink establishment signaling of the group returned by the cluster server to the base station corresponding to the group.
Optionally, the configuring module is further configured to configure a single physical radio bearer PRB for the uplink and/or downlink service of the group.
In the embodiment of the invention, the core network server receives the capability information reported by each member terminal in the group, the capability information comprises the first SPS retransmission times supported by the member terminal, and configures and sends the SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, and the SPS retransmission information comprises the second SPS retransmission times, so that the member terminal of the group can receive data according to the second SPS retransmission times in the SPS retransmission information, or combines a plurality of voice data packets into one data packet for repeated sending. The embodiment of the invention supports repeated sending of the data packet in the time domain, so that the power spectral density of data transmission can be improved, and the edge coverage of a system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a method for transmitting cluster data according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for transmitting cluster data according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a core network server according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 "comprises" and "comprising," and any variations thereof, in the description and claims of this invention, are intended to cover non-exclusive inclusions, e.g., a process or an apparatus that comprises a list of steps is not necessarily limited to those structures or steps expressly listed but may include other steps or structures not expressly listed or inherent to such process or apparatus.
Referring to fig. 1, fig. 1 is a flowchart of a method for transmitting cluster data according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
In this embodiment, the capability information reported by the member terminal at least includes the number of first SPS retransmissions supported by the member terminal, and optionally, may further include a coding mode supported by the member terminal, where the number of first SPS retransmissions and the coding format corresponding to different member terminals in the group may be different, and the coding mode supported by the member terminal in this embodiment may be any one or more of a narrowband speech coding (NVOC) format and an adaptive multi-rate speech coding (AMR) format, but is not limited to the NVOC format and the AMR) format.
Optionally, in this embodiment, after receiving the capability information reported by each member terminal in the group, the core network server further sends the capability information reported by each member terminal to the cluster server, and the cluster server determines, according to the coding format supported by each member terminal in the group, the coding format of the user plane data of the group, where the coding format of the user plane data corresponding to one group may be one or multiple, when all member terminals in the group support one coding format, it is determined that the coding format is the coding format of the user plane data of the group, and when all member terminals in the group support M coding formats, it is determined that the M coding formats are the coding formats of the user plane data of the group, and the group user plane data in the M coding formats is concurrently issued.
And step 102, the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times.
In this embodiment, the SPS retransmission information configured by the core network server at least includes the number of times of the second SPS retransmission of the group, and optionally, may further include an SPS resource allocation interval corresponding to the group.
Optionally, in this embodiment, the core network server may configure the SPS retransmission information of the group according to the minimum SPS retransmission times supported by the member terminals in the group, for example, the minimum SPS retransmission times supported by all the member terminals may be configured as SPS retransmission times (i.e., second SPS retransmission times) corresponding to the group, and configure an SPS resource allocation interval corresponding to the second SPS retransmission times based on a preset correspondence between the SPS retransmission times and the SPS resource allocation interval, for example, the SPS resource allocation interval may be 10 subframes or subframes with other numbers.
And 103, the core network server sends the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending.
Illustratively, when the number of times of retransmission of the second SPS corresponding to the group is N, when the member terminal receives data, if the decoding of the data packet of the first SPS is correct, the remaining N-1 times of SPS transmission is ignored, and if the decoding of the data packet of the first SPS is incorrect, the data packet of the second SPS is received, and the data packets of the two SPS are subjected to hybrid automatic repeat request (HARQ) combined decoding; if correct, the remaining N-2 SPS transmissions are ignored. And analogizing in sequence, if the data packets of the first N-1 SPS are decoded incorrectly, receiving the data packet of the Nth SPS, and performing HARQ (hybrid automatic repeat request) combined decoding on the data packets of the N SPS. If the decoding is correct, the data is sent to the higher layer. If the decoding result is wrong, the decoding data is discarded.
When the member terminal transmits the data packets, the member terminal combines a preset number of data packets into one data packet, and then repeatedly transmits the data packet on the continuous N SPS. For example, the SPS resource allocation interval is 10ms, and every 60ms is a retransmission period. One packet is repeatedly sent over 6 SPS's in the same retransmission cycle.
Of course, the above examples are merely illustrative and not the only limitations of the present invention.
Optionally, when the member terminals in the group apply for the speaking right, as shown in fig. 2, the embodiment may further include the following steps:
In this embodiment, when applying for the right to speak to the core network server, the member terminal sends a speaking right application to the core network server, where the speaking right application at least carries an encoding format and, optionally, may also carry the second SPS retransmission times.
In this embodiment, when applying for the right to speak to the core network server, the member terminal sends a speaking right application to the core network server, and the core network server sends the speaking right application to the cluster server, where the speaking right application at least carries an encoding format and, optionally, may also carry the number of times of retransmission of the second SPS.
Further, when the cluster server agrees with the speaking right application of the member terminal, the cluster server returns the coding format of the member terminal and sends a downlink establishment signaling to the core network server, where the signaling includes the coding format adopted by the user plane data of the group (if the coding format corresponding to the group is one, one is sent, or if the coding format corresponding to the group is multiple, multiple is sent completely), and the further core network server sends the coding format carried in the downlink establishment signaling to the base station corresponding to the group where the member terminal is located. The base station informs the SPS repetition information of the member terminal group in the group.
Optionally, if there are multiple coding formats corresponding to the group, a group access network identifier (G-RNTI) corresponding to each coding format also needs to be carried in the downlink setup signaling.
Optionally, when scheduling the uplink small data service of the group, the core network server configures a single PRB for the uplink service of the group.
Optionally, when scheduling the downlink small data service of the group, the core network server configures a single PRB for the downlink service of the group.
In this embodiment, the core network server receives capability information reported by each member terminal in the group, where the capability information includes the first SPS retransmission times supported by the member terminal, and configures and sends SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, where the SPS retransmission information includes the second SPS retransmission times, so that the member terminals in the group can receive data according to the second SPS retransmission times in the SPS retransmission information, or combine multiple voice data packets into one data packet for repeated sending. Since the present embodiment supports repeated data packet transmission in the time domain, the power spectral density of data transmission can be increased, and the edge coverage of the system can be improved.
Fig. 3 is a schematic structural diagram of a core network server according to an embodiment of the present invention, as shown in fig. 3, including:
a first receiving module 11, configured to receive capability information reported by each member terminal in a group, where the capability information includes a first SPS retransmission frequency supported by a corresponding member terminal;
a configuration module 12, configured to configure SPS retransmission information of the group according to first SPS retransmission times supported by each member terminal in the group, where the SPS retransmission information includes second SPS retransmission times;
a first sending module 13, configured to send SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine multiple voice data packets into one data packet according to the SPS retransmission times for repeated sending.
Optionally, the configuration module 12 is configured to: and the core network server configures SPS retransmission information of the group based on the minimum SPS retransmission times supported by the member terminals in the group.
Optionally, the configuration module 12 is specifically configured to:
configuring the minimum SPS retransmission times supported by the member terminals in the group as second SPS retransmission times of the group;
and configuring the SPS resource allocation interval corresponding to the group based on the second SPS retransmission times of the group.
Optionally, the capability information reported by each member terminal in the group further includes: encoding format;
the core network server further includes:
the second sending module is used for sending the coding format reported by each member terminal in the group to the cluster server;
a second receiving module, configured to receive one or more encoding formats of the user plane data of the group, where the encoding formats of the group user plane data are determined by the cluster server according to the encoding formats of the member terminals;
wherein the encoding format includes any one of: a narrowband speech coding (NVOC) format, an adaptive multi-rate speech coding (AMR) format.
Optionally, the configuring module is further configured to configure a single physical radio bearer PRB for the uplink service of the group.
Optionally, the configuring module is further configured to configure a single physical radio bearer PRB for the downlink service of the group. The server provided in this embodiment can execute the technical solution in the embodiment of fig. 1, and the execution manner and the beneficial effect thereof are similar and will not be described herein again.
An embodiment of the present invention further provides a core network server, where the core network server further includes, on the basis of the embodiment in fig. 3:
a third sending module, configured to send, when receiving a speaking right application from the member terminal, an encoding format carried in the speaking right application to the cluster server;
the fourth sending module is used for sending the coding format of the member terminal returned by the cluster server to the member terminal when the cluster server grants the speaking right of the member terminal;
and a fifth sending module, configured to send the coding format carried in the downlink establishment signaling of the group returned by the cluster server to the base station corresponding to the group.
The server provided in this embodiment can execute the technical solution in the embodiment of fig. 2, and the execution manner and the beneficial effect are similar, which are not described herein again.
An embodiment of the present invention further provides a server, where the server includes a processor and a memory for storing executable instructions of the processor, and when processing the instructions in the execution memory, the server executes the following method:
a core network server receives capability information reported by each member terminal in a group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal;
the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times;
and the core network server sends the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending.
In this embodiment, the core network server receives capability information reported by each member terminal in the group, where the capability information includes the first SPS retransmission times supported by the member terminal, and configures and sends SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, where the SPS retransmission information includes the second SPS retransmission times, so that the member terminals in the group can receive data according to the second SPS retransmission times in the SPS retransmission information, or combine multiple voice data packets into one data packet for repeated sending. Since the present embodiment supports repeated data packet transmission in the time domain, the power spectral density of data transmission can be increased, and the edge coverage of the system can be improved.
The embodiment of the invention also provides a computer storage medium, wherein the storage medium stores an execution instruction of a computer, and when the computer executes the execution instruction, the following method is executed:
a core network server receives capability information reported by each member terminal in a group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal;
the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times;
and the core network server sends the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending.
Finally, it should be noted that, as one of ordinary skill in the art will appreciate, all or part of the processes of the methods of the embodiments described above may be implemented by hardware related to instructions of a computer program, where the computer program may be stored in a computer-readable storage medium, and when executed, the computer program may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.
Each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for cluster data transmission, comprising:
a core network server receives capability information reported by each member terminal in a group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal;
the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times;
the core network server sends the SPS retransmission information of the group to the member terminals of the group, so that the member terminals receive data according to the second SPS retransmission times, or combine a plurality of voice data packets into one data packet according to the SPS retransmission times for repeated sending;
the core network server configures SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, and the configuration comprises the following steps: and the core network server configures SPS retransmission information of the group based on the minimum SPS retransmission times supported by the member terminals in the group.
2. The method as claimed in claim 1, wherein the core network server configures SPS retransmission information of a group based on a minimum number of SPS retransmissions supported by member terminals in the group, comprising:
configuring the minimum SPS retransmission times supported by the member terminals in the group as second SPS retransmission times of the group;
and configuring the SPS resource allocation interval corresponding to the group based on the second SPS retransmission times of the group.
3. The method according to any one of claims 1 or 2, wherein the capability information reported by each member terminal in the group further includes: encoding format;
the method further comprises the following steps:
the core network server sends the coding format reported by each member terminal in the group to a cluster server;
receiving one or more encoding formats of the user plane data of the group determined by the cluster server according to the encoding format of each member terminal;
wherein the encoding format includes any one of: a narrowband speech coding (NVOC) format, an adaptive multi-rate speech coding (AMR) format.
4. The method of claim 3, further comprising:
when the core network server receives the speaking right application of the member terminal, the core network server sends the encoding format carried in the speaking right application to the cluster server;
when the cluster server grants the speaking right of the member terminal, sending the encoding format of the member terminal returned by the cluster server to the member terminal;
and sending the coding format carried in the downlink establishing signaling of the group returned by the cluster server to the base station corresponding to the group.
5. The method of claim 1, further comprising:
and the core network server configures a single Physical Radio Bearer (PRB) for the uplink and/or downlink services of the group.
6. A core network server, comprising:
the first receiving module is used for receiving capability information reported by each member terminal in the group, wherein the capability information comprises the retransmission times of a first SPS supported by the corresponding member terminal;
the configuration module is used for configuring SPS retransmission information of the group according to the first SPS retransmission times supported by each member terminal in the group, wherein the SPS retransmission information comprises second SPS retransmission times;
a first sending module, configured to send SPS retransmission information of the group to a member terminal of the group, so that the member terminal receives data according to the second SPS retransmission times, or combines multiple voice data packets into one data packet according to the SPS retransmission times to repeatedly send the data packet;
the configuration module is configured to: and the core network server configures SPS retransmission information of the group based on the minimum SPS retransmission times supported by the member terminals in the group.
7. The core network server according to claim 6, wherein the configuration module is specifically configured to:
configuring the minimum SPS retransmission times supported by the member terminals in the group as second SPS retransmission times of the group;
and configuring the SPS resource allocation interval corresponding to the group based on the second SPS retransmission times of the group.
8. The core network server according to any one of claims 6 or 7, wherein the capability information reported by each member terminal in the group further includes: encoding format;
the core network server further includes:
the second sending module is used for sending the coding format reported by each member terminal in the group to the cluster server;
a second receiving module, configured to receive one or more encoding formats of the user plane data of the group, where the encoding formats of the group user plane data are determined by the cluster server according to the encoding formats of the member terminals;
wherein the encoding format includes any one of: a narrowband speech coding (NVOC) format, an adaptive multi-rate speech coding (AMR) format.
9. The core network server of claim 8, wherein the core network server further comprises:
a third sending module, configured to send, when receiving a speaking right application from the member terminal, an encoding format carried in the speaking right application to the cluster server;
the fourth sending module is used for sending the coding format of the member terminal returned by the cluster server to the member terminal when the cluster server grants the speaking right of the member terminal;
and a fifth sending module, configured to send the coding format carried in the downlink establishment signaling of the group returned by the cluster server to the base station corresponding to the group.
10. The core network server according to claim 6, wherein the configuring module is further configured to configure a single Physical Radio Bearer (PRB) for the uplink and/or downlink traffic of the group.
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| CN112087781B (en) * | 2019-06-13 | 2023-01-06 | 成都鼎桥通信技术有限公司 | Method and equipment for determining voice coding mode in LTE (Long term evolution) system |
| CN112866994B (en) * | 2019-11-11 | 2023-03-31 | 成都鼎桥通信技术有限公司 | Encryption communication method and system for carrying narrowband speech coding by LTE (Long term evolution) |
| CN113784338B (en) * | 2020-05-21 | 2023-05-26 | 成都鼎桥通信技术有限公司 | Voice service bearing method in multi-service broadband cluster system |
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