CN110225552B - RB (radio bearer) level retransmission method and system - Google Patents
RB (radio bearer) level retransmission method and system Download PDFInfo
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- CN110225552B CN110225552B CN201910547276.4A CN201910547276A CN110225552B CN 110225552 B CN110225552 B CN 110225552B CN 201910547276 A CN201910547276 A CN 201910547276A CN 110225552 B CN110225552 B CN 110225552B
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- 238000004891 communication Methods 0.000 claims description 10
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1893—Physical mapping arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The invention discloses a method and a system for RB level retransmission, wherein the method comprises the following steps: step 1, a base station or a terminal analyzes received air interface data, and detects air interface interference of each RB in the process of analyzing the received air interface data; if the analysis is unsuccessful, reporting the position of the interfered RB; step 2, generating retransmission RB notification information according to the position of the interfered RB, and sending the retransmission RB notification information to an opposite terminal; step 3, after receiving the RB notification message, the opposite terminal retransmits the interfered RB; step 4, after receiving the retransmitted RB, the base station or the terminal performs joint analysis on the retransmitted RB and the data transmitted last time; if the joint analysis is successful, reporting the result of the joint analysis and the result of the last analysis by a complete data packet. The invention only retransmits the interfered RB, thereby avoiding the retransmission of the whole empty data packet and saving the empty resource.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for RB (radio bearer) level retransmission.
Background
In the existing national power communication system, wireless communication is mostly communication equipment based on radio stations, and the power system is relying on the radio stations to ensure communication of the power system so as to maintain safe operation of a national power grid. Meanwhile, the national power system is also planning a new generation communication system of national power based on the current broadband system.
This leads to the coexistence of radio stations and new generation broadband communication technologies in the national grid for a period of time in the future, and this trend is still long due to the advantages of the unique confidentiality of the radio stations and the like, in view of the importance of the national grid to the national security.
At present, a national power grid uses a RB bandwidth which is consistent with a radio station bandwidth, a frequency hopping technology is used for realizing interference randomization, code block grouping retransmission or base station periodic measurement of an interfered RB, the interfered RB (the RB is used by the radio station) is notified to a terminal, and air interface interference caused by air interface resources used by the radio station to a broadband is avoided in broadband communication realized by the technologies such as the RB and the like through an air interface.
These techniques do improve in some degree of effectiveness, but they have relatively large side effects. After the interference randomization, the selection order of the idle mcs of the RB resources used by the whole user is lower; the grouping and retransmission of code blocks result in the retransmission of code block groups, and the resource waste is caused.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in view of the above problems, a method and system for RB level retransmission are provided.
The technical scheme adopted by the invention is as follows:
the invention provides a RB-level retransmission method, which comprises the following steps:
step 1, a base station or a terminal analyzes received air interface data, and detects air interface interference of each RB in the process of analyzing the received air interface data; if the analysis is unsuccessful, reporting the position of the interfered RB;
step 2, generating retransmission RB notification information according to the position of the interfered RB, and sending the retransmission RB notification information to an opposite terminal;
step 3, after receiving the RB notification message, the opposite terminal retransmits the interfered RB;
step 4, after receiving the retransmitted RB, the base station or the terminal performs joint analysis on the retransmitted RB and the data transmitted last time; if the joint analysis is successful, reporting the result of the joint analysis and the result of the last analysis by a complete data packet.
Further, in step 1, the base station or the terminal detects air interface interference of each RB in the process of analyzing the received air interface data, and directly reports the air interface data if the analysis is successful; if the analysis is unsuccessful, recording the interfered RB, and then reporting the position of the interfered RB.
Further, in step 2, the RB notification information for retransmission is sent to the peer end through DCI or MCE.
Further, the retransmission RB notification information includes location information of the interfered RB.
Further, after receiving the RB retransmission notification message by the peer end in step 3, when retransmitting the interfered RB, the peer end retransmits the RB to be retransmitted by adjusting the transmit power or increasing the RB resources used for retransmission according to the channel quality authorized by the air interface; the location information of the RB resource used for the incremental retransmission may be determined according to the agreement between the base station and the terminal.
The invention also provides a system for RB level retransmission, which comprises: a base station and a terminal; the base station or the terminal includes:
the first data analysis module is used for analyzing the received air interface data and reporting the position of the interfered RB to the transmission module if the analysis is unsuccessful in the process of analyzing the received air interface data;
the transmission module is used for generating retransmission RB notification information according to the received position of the interfered RB and sending the retransmission RB notification information to the opposite terminal;
the retransmission module is used for retransmitting the interfered RB after receiving the RB notification message;
the second data analysis module is used for performing joint analysis on the retransmitted RB and the data transmitted last time after receiving the retransmitted RB; if the joint analysis is successful, the result of the joint analysis and the result of the last analysis are reported to the transmission module by a complete data packet.
Further, if the first data analysis module successfully analyzes, directly reporting the air interface data to the transmission module; if the analysis is unsuccessful, the interfered RB needs to be recorded, and then the position of the interfered RB is reported to the transmission module.
Further, the transmission module sends the RB notification information to the peer end through DCI or MCE.
Further, the retransmission RB notification information includes location information of the interfered RB.
Further, after receiving the RB retransmission notification message, the retransmission module retransmits the RB to be retransmitted by adjusting the transmission power or increasing the RB resources used for retransmission according to the channel quality authorized by the air interface when retransmitting the interfered RB; the location information of the RB resource used for the incremental retransmission may be determined according to the agreement between the base station and the terminal. In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention only retransmits the interfered RB resource, avoids the retransmission of the whole empty data, saves the empty resource, fully adapts to the frequency hopping technology of the radio station and avoids the interference caused by the frequency hopping of the radio station.
2. The invention can realize that new transmission and retransmission can be carried out simultaneously, and can ensure the air interface throughput rate of data.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flow chart of the RB level retransmission method of the present invention.
Fig. 2 is a block diagram of a system architecture for RB level retransmission according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
As shown in fig. 1, a method for RB-level retransmission of this embodiment includes:
step 1, a base station or a terminal analyzes received air interface data, and detects air interface interference of each RB in the process of analyzing the received air interface data; if the analysis is unsuccessful, reporting the position of the interfered RB; further, if the analysis is successful, the air interface data is directly reported. In the embodiment, the RB retransmission is carried out under the condition that the analysis is unsuccessful, namely, the steps 2-4 are carried out under the condition that the analysis is unsuccessful.
The method for analyzing the received air interface data by the base station or the terminal can be implemented by referring to the prior art for analyzing the air interface data in the public network LTE. Further, if the analysis is unsuccessful, the interfered RB needs to be recorded, and then the position of the interfered RB is reported.
Step 2, generating retransmission RB notification information according to the position of the interfered RB, and sending the retransmission RB notification information to an opposite terminal;
in this embodiment, the RB retransmission notification Information may be sent to the peer end through DCI (Downlink Control Information) or MCE (MAC Control Element). Wherein, the RB notification information includes the location information of the interfered RB, so that the opposite end knows the location information of the RB to be retransmitted, and a correspondence is formed.
Step 3, after receiving the RB notification message, the opposite terminal retransmits the interfered RB;
in this embodiment, the opposite end knows the location information of the RB to be retransmitted according to the received RB notification information for retransmission, and retransmits the RB that is to be interfered, that is, in the present invention, if there is an interfered RB in the analyzed air interface data, only the interfered RB resource is retransmitted, which avoids retransmission of the entire air interface data, and saves the air interface resource.
Further, when the opposite end retransmits the interfered RB, the RB to be retransmitted is retransmitted by adjusting the transmit power or increasing the RB resources used for retransmission according to the channel quality granted by the air interface. For example, when the authorized mcs (Modulation and Coding Scheme) selection order is lower than that of the initial transmission, the number of RBs required for Coding redundancy can be calculated to determine the number of RBs to be retransmitted according to the channel quality required for analyzing the retransmitted RBs; when the mcs of retransmission is not lower than the initial transmission, the success of retransmission analysis can be ensured by increasing the transmission power.
For the base station and the terminal, when transmitting the air interface data, the base station and the terminal are affected by the channel quality authorized by the air interface, and in order to ensure the quality of the retransmitted RB, a mode of adjusting the transmission power or increasing the RB resource used for retransmission can be adopted; the location information of the RB resource used for the incremental retransmission may be determined according to the stipulations of the base station and the terminal, for example, the retransmission RB is preset to be the first RBs of the current grant, or the last RBs of the grant, or the middle RBs of the grant. Further, the retransmitted RB may be transmitted together with newly transmitted data. The retransmitted RB is positioned at a specific position of the authorized RB, and the position is determined relative to the RB resource authorized by the current transmission, so that the requirement of the convention of the previous step is met.
Step 4, after receiving the retransmitted RB, the base station or the terminal performs joint analysis on the retransmitted RB and the data transmitted last time; if the joint analysis is successful, reporting the result of the joint analysis and the result of the last analysis by a complete data packet. Generally, after retransmission, the RB to be retransmitted and the data transmitted last time are jointly analyzed successfully, and if the analysis is unsuccessful, the RB-level retransmission method of the present invention may be repeatedly performed in steps 1 to 4 until the analysis is successful.
As shown in fig. 2, a system for RB level retransmission of the present invention includes: a base station and a terminal; the base station or the terminal includes:
the first data analysis module is used for analyzing the received air interface data and reporting the position of the interfered RB to the transmission module if the analysis is unsuccessful in the process of analyzing the received air interface data; if the analysis is successful, the analysis data is reported to the transmission module;
the transmission module is used for generating retransmission RB notification information according to the received position of the interfered RB and sending the retransmission RB notification information to the opposite terminal; in this embodiment, the transmission module sends the RB retransmission notification Information to the peer end through DCI (Downlink Control Information) or MCE (MAC Control Element). Wherein, the RB notification information includes the location information of the interfered RB, so that the opposite end knows the location information of the RB to be retransmitted, and a correspondence is formed.
And the retransmission module is used for retransmitting the interfered RB after receiving the RB notification message. In this embodiment, the opposite end knows the location information of the RB to be retransmitted according to the received RB notification information for retransmission, and retransmits the RB that is to be interfered, that is, in the present invention, if there is an interfered RB in the analyzed air interface data, only the interfered RB resource is retransmitted, which avoids retransmission of the entire air interface data, and saves the air interface resource. Further, when the opposite end retransmits the interfered RB, the RB to be retransmitted is retransmitted by adjusting the transmit power or increasing the RB resources used for retransmission according to the channel quality granted by the air interface. For the base station and the terminal, when transmitting the air interface data, the base station and the terminal are affected by the channel quality authorized by the air interface, and in order to ensure the quality of the retransmitted RB, a mode of adjusting the transmission power or increasing the RB resource used for retransmission can be adopted; the position information of the RB resource used for the retransmission increase may be determined according to the convention of the base station and the terminal, for example, the first RBs, the last RBs, or the front and back RBs preset as the position of the currently interfered RB for retransmission may be determined.
The second data analysis module is used for performing joint analysis on the retransmitted RB and the data transmitted last time after receiving the retransmitted RB; if the joint analysis is successful, the result of the joint analysis and the result of the last analysis are reported to the transmission module by a complete data packet. Generally, after retransmission, the RB to be retransmitted and the data transmitted last time are jointly analyzed successfully, and if the analysis is unsuccessful, the retransmission process of the interfered RB may be repeated until the analysis is successful.
It should be noted that, in practical applications, the first data parsing module and the second data parsing module may be two processing units with data processing functions, or may also be the same processing unit with data processing functions, and the main function of the first data parsing module and the second data parsing module is to parse received air interface data.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A method for RB level retransmission, wherein the method for RB level retransmission is used for a national power communication system, and comprises the following steps:
step 1, a base station or a terminal analyzes received air interface data, and detects air interface interference of each RB in the process of analyzing the received air interface data; if the analysis is unsuccessful, reporting the position of the interfered RB;
step 2, generating retransmission RB notification information according to the position of the interfered RB, and sending the retransmission RB notification information to an opposite terminal;
step 3, after receiving the RB notification message, the opposite terminal retransmits the interfered RB; after receiving the RB retransmission notification message, the opposite end retransmits the RB to be retransmitted by adjusting the transmit power or increasing the RB resources used for retransmission according to the channel quality authorized by the air interface when retransmitting the interfered RB in step 3; wherein, the position information of the RB resource used by the increased retransmission can be determined according to the convention of the base station and the terminal;
step 4, after receiving the retransmitted RB, the base station or the terminal performs joint analysis on the retransmitted RB and the data transmitted last time; if the joint analysis is successful, reporting the result of the joint analysis and the result of the last analysis by a complete data packet; and if the joint analysis is unsuccessful, repeatedly executing the steps 1-4.
2. The method according to claim 1, wherein in step 1, the base station or the terminal detects the air interface interference of each RB in the process of analyzing the received air interface data, and directly reports the air interface data if the analysis is successful; if the analysis is unsuccessful, recording the interfered RB, and reporting the position of the interfered RB.
3. The method of claim 1, wherein in step 2, the RB notification information is sent to the opposite end through DCI or MCE.
4. The method of claim 1, wherein the RB notification information includes location information of an interfered RB.
5. A system of RB level retransmissions for a national electric power communication system, comprising: a base station and a terminal; the base station or the terminal includes:
the first data analysis module is used for analyzing the received air interface data and reporting the position of the interfered RB to the transmission module if the analysis is unsuccessful in the process of analyzing the received air interface data;
the transmission module is used for generating retransmission RB notification information according to the position of the interfered RB and sending the retransmission RB notification information to the opposite terminal;
the retransmission module is used for retransmitting the interfered RB after receiving the RB notification message; after receiving the RB notification message, the retransmission module retransmits the interfered RB by adjusting the transmitting power or increasing the RB resource used by retransmission according to the channel quality authorized by an air interface; wherein, the position information of the RB resource used by the increased retransmission can be determined according to the convention of the base station and the terminal;
the second data analysis module is used for performing joint analysis on the retransmitted RB and the data transmitted last time after receiving the retransmitted RB; if the joint analysis is successful, reporting the result of the joint analysis and the result of the last analysis to a transmission module by a complete data packet; and if the joint analysis is unsuccessful, returning to the first data analysis module for continuous execution.
6. The RB level retransmission system according to claim 5, wherein if said first data parsing module succeeds in parsing, the air interface data is directly reported to the transmission module; if the analysis is unsuccessful, the interfered RB needs to be recorded, and then the position of the interfered RB is reported to the transmission module.
7. The system of RB-level retransmissions of claim 5, wherein the transmission module sends the retransmitted RB notification information to the peer via DCI or MCE.
8. The system of claim 5, wherein the RB notification information includes location information of an interfered RB.
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Effective date of registration: 20240419 Address after: No. 258 Heyou Road, Jiading District, Shanghai, March 2018 Patentee after: SHANGHAI HANXUN INFORMATION TECHNOLOGY CO.,LTD. Country or region after: China Address before: 5 / F, building 1, No.269, north section of Hupan Road, Tianfu New District, Chengdu, Sichuan 610000 Patentee before: CHENGDU ZHONGKE MICRO INFORMATION TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Country or region before: China |