CN101267443A - A data processing method and communication device - Google Patents
A data processing method and communication device Download PDFInfo
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- CN101267443A CN101267443A CNA2008101062635A CN200810106263A CN101267443A CN 101267443 A CN101267443 A CN 101267443A CN A2008101062635 A CNA2008101062635 A CN A2008101062635A CN 200810106263 A CN200810106263 A CN 200810106263A CN 101267443 A CN101267443 A CN 101267443A
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Abstract
The invention provides a data processing method and a communication device. The method comprise the following steps: A, a RLC data providing layer sets the priority of service data, and sends the service data and corresponding priority information to a RLC layer; B, the RLC layer creates at least two queues having different priorities, and stores the service data to a corresponding queue having a same priority as the service data, according to the priority information; and C, when receiving the instruction for sending data from a lower layer, the RLC layer send the stored service data in accordance with the sequence of the priorities of the queues. By processing of the RLC layer and the RLC data proving layer in the communication device, high-priority data and lower-priority data are treated differently, which ensures the transmission of the high-priority data, thus to improve the service transmission performance in a wireless communication system.
Description
Technical field
(The 3 to the present invention relates to the third generation
RdGeneration, 3G) mobile communication system relates in particular to the data processing method and the communication equipment of a kind of 3G of being used for system.
Background technology
(The 3 at the third generation
RdGeneration, 3G) in the mobile communication system, wireless chain control layer (Radio Link Control, RLC) be that (Access Stratum, part AS) are equivalent to open system interconnection (Open Systems Interconnection to Access Layer, OSI) data link layer in the seven layer protocol models, major function is that (Quality ofService, QoS) requirement provide the data transport service that satisfies corresponding requirements for different service quality according to upper-layer service.
The data transport service that rlc layer provides be divided into affirmation mode (Acknowledged Mode, AM), Unacknowledged Mode (Unacknowledged Mode, UM) and transparent mode (Transparent Mode, TM) three kinds.Wherein the service quality of AM is the highest, employing is based on automatic request retransmission (the Automatic Repeat ReQuest of sliding window, ARQ) mechanism, guarantee data transmission credibility, but simultaneously because this mechanism needs transmit leg and recipient to carry out alternately, the transfer of data real-time also correspondingly descends to some extent, so generally require lower Packet Service to be configured to AM RLC radio bearer (Radio Bearer real-time, and business configuration such as the voice call that real-time is had relatively high expectations, visual telephone is TM RLC RB RB).
For Packet Service, generally at rlc layer only corresponding to a RB, that is to say that from the professional data in all upper stratas (referring to that the RLC data provide layer), comprise that FTP downloads, HTTP browses, voip network phone etc., all lining up sends on a RB; And in fact, significance level and urgency level that these are professional but differ widely, such as very high ageing of VoIP service needed, and the ageing requirement of ftp business is just relatively low, but ftp business is then much higher than VoIP business to the requirement of data accuracy; Even for same business, its data often also can be divided into two types of chain of command data and service surface data, and wherein the chain of command data have higher real-time and importance; If all treat, will have a significant impact service feature with identical priority.
In order to improve this problem, the researcher has carried out specific aim research, and proposes some and improve one's methods.These methods mainly are to utilize each AM RLC transmitting terminal can dispose the characteristics of two logic channels, the data based priority difference of upper-layer service is mapped in respectively on the different logic channels, and also give higher priority, thereby guarantee that high-priority data can preferentially be sent to the logic channel of mapping high-priority data.With the business based on Transmission Control Protocol is example, when the packet that contains the tcp window control information and the packet that do not contain these information arrive simultaneously, make RLC guarantee that the former is preferentially sent in this way, even and then the network congestion that data traffic causes greatly appears in assurance, the affirmation information that tcp window control information mutual can not had a strong impact on yet, the TCP transmitting terminal still can in time obtain receiving terminal constantly promotes send window to front slide.
This method is for the network equipment good method of can yet be regarded as, but for terminal equipment and inapplicable, because the logic channel number of each RLC entity mapping is configured by network side, terminal can't change; Only shine upon a logic channel if network side is configured to the RLC entity, then this method can't be used.
In addition, this method is only effective to AM RLC RB because in the 3GPP related protocol only the transmitting terminal of regulation AMRLC can be configured to two logic channels, UM RLC and TM RLC are all inapplicable.And in fact, for being configured to TM RLC visual telephone business usually, just comprise control frame and the relatively low non-control frame of importance that importance is very high in its data, adopt said method to treat with a certain discrimination to these two kinds of data.
Summary of the invention
Technical problem to be solved by this invention provides a kind of data processing method and communication equipment, to improve the service transmission performance in the wireless communication system.
For solving the problems of the technologies described above, it is as follows to the invention provides technical scheme:
A kind of data processing method comprises the steps:
A, RLC data provide layer that the priority of business datum is set, and business datum and corresponding priorities information are sent to rlc layer;
The formation that B, rlc layer are set up at least two different priorities is cached to business datum in the formation of respective priority according to described precedence information;
C, rlc layer are received transmission data when indication of bottom, send cached business data according to the priority height order of described formation.
Above-mentioned method, in the steps A, the RLC data provide the TCP bag of layer free of data load to be set to limit priority.
Above-mentioned method, in the steps A, the RLC data provide layer by increase the priority that the indicating services data are come in a priority territory in the interface message that sends the Service Data Unit request to rlc layer.
Above-mentioned method, wherein, step C further comprises:
C1, when each Transmission Time Interval arrives, rlc layer obtains the protocol Data Unit number N that this time can send according to the transmission data indication from bottom;
C2, rlc layer carry out cached business data to be filled in N the protocol Data Unit after segmentation/cascade according to the priority height order of described formation;
Protocol Data Unit after C3, rlc layer will be filled sends by logic channel.
A kind of communication equipment comprises:
The RLC data provide module, are used to be provided with the priority of business datum, and business datum and corresponding priorities information are sent to the RLC module;
The RLC module, be used to set up the formation of at least two different priorities, business datum is cached in the formation of respective priority according to described precedence information, is receiving when sending the data indication, send cached business data according to the priority height order of described formation.
The present invention treats the data of high priority and low priority with a certain discrimination by the rlc layer in the communication equipment and RLC data being provided the processing of layer, guarantees the transmission of high-priority data, thereby has improved the service transmission performance in the wireless communication system.
Description of drawings
Fig. 1 is the flow chart of the data processing method of the embodiment of the invention;
Fig. 2 is a packet priority decision flow chart in the embodiment of the invention;
Fig. 3-6 is the caching situation schematic diagram of embodiment of the invention medium priority formation.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
With reference to Fig. 1, the data processing method of the embodiment of the invention mainly comprises the steps:
The RLC data provide a layer upper strata that is meant RLC, and (Upper Layer, ULR), it sends business datum to rlc layer.Described ULR can for packet data convergence protocol (Packet Data ConvergenceProtocol, PDCP) layer, the broadcast/multi broadcast key-course (Broadcast/Multicast Control, BMC) layer etc.(Service Data Unit SDU) increases " priority " territory, the priority that is used to indicate SDU in Qing Qiu the interface message to send Service Data Unit at ULR to rlc layer; When ULR when rlc layer sends SDU, the priority of SDU is indicated to rlc layer by this territory.Wherein, the principle that data priority is just differentiated has nothing in common with each other according to the difference of type of service.
The formation that step 102, rlc layer are set up at least two different priorities is cached to business datum in the formation of respective priority according to described precedence information;
In this step, when rlc layer is received SDU from ULR, do not carry out SDU segmentation (Segmentation)/cascade (Concatenation) immediately, but SDU is cached in the formation of different priorities according to the priority that is provided with in the step 101.
In the moment that each Transmission Time Interval arrives, RLC rlc protocol data cell (the Protocol Data Unit that indication this time can send according to bottom, PDU) number begins SDU is carried out segmentation/cascade, in this process, SDU in the RLC priority treatment high-priority queue, if high priority SDU still had residue when all PDU spaces all were filled, then this time handle and do not relate to low priority PDU, there is the PDU space that the free time is still arranged if instead high priority SDU is processed after finishing, then continues to handle the SDU of Low Priority Queuing.After filling is finished, described PDU is sent by logic channel.
It below is an instantiation of using the method for the invention.In this embodiment, the differentiation of SDU priority is finished by the PDCP layer that is positioned in the 3GPP Access Layer on the RLC; Basic discrimination principle is that TCP is preferential, and the TCP bag that especially only contains IP packet header and TCP packet header is preferential, and it is made as high priority, and other packets all are made as low priority.Because PDCP mainly realizes grouped data and assembles and TCP/IP packet header compression function that TCP/IP packet header content is visible at this layer, so can finish above-mentioned differentiation.The variable that needs to use in the differentiation process comprises transport layer protocol type V
Protocol_type, total length of data packets V
Pkt_total_len, IP packet header length V
Ip_hdr_len, packet header length V
Tcp_hdr_len, wherein the value of first three variable can obtain by resolving IP packet header, and the value of last variable can obtain by resolving TCP packet header.As shown in Figure 2, deterministic process mainly comprises:
Step 203, this packet priority is set, judges and finish for high;
Step 204, this packet priority is set is low, judges and finishes.
In this embodiment, be that business datum priority is divided into high and low two ranks, but also can be divided into plural rank as required.
The specific implementation process of data processing method of having used above-mentioned priority determination methods is as follows:
When (1) setting up the RLC RB of loaded packet data service, network side disposes logic channel of this RB transmitting terminal mapping;
(2) during this RLC RB of end side initialization, set up two SDU formation L1 and L2, be respectively applied for the top layer SDU of buffer memory low priority and high priority for it;
(3) PDCP receives the TCP bag D1 (length 1300 bytes) from upper layer application, and it is low after differentiating priority being set, and sends to rlc layer; RLC receives that the back is inserted into formation L1 according to priority;
(4) PDCP receives the TCP bag D2 (length 40 bytes) from upper layer application, priority is set for high after differentiating, and sends to rlc layer; RLC receives that the back is inserted into formation L2 according to priority;
(5) PDCP receives the UDP bag D3 (length 50 bytes) from upper layer application, and it is low after differentiating priority being set, and sends to rlc layer; RLC receives that the back is inserted into formation L1 according to priority; Two SDU formations of RLC this moment caching situation as shown in Figure 3;
(6) RLC receives that the bottom indication can send 12 RLC PDU, RLC priority treatment high-priority queue L2, take out TCP bag D2, segmentation is calculated and is just taken 1 PDU, RLC continues processing queue L1 then, takes out TCP bag D1 according to the principle of first-in first-out, and segmentation is calculated needs 33 PDU, then this time can only send 11 at most, remain 22 PDU and partly continue buffer memory; Send and finish latter two SDU formation renewal as shown in Figure 4, among the figure, grey colour specification outgoing data, data have been sent out in the white expression;
(7) PDCP receives the TCP bag D4 (length 40 bytes) from upper layer application, priority is set for high after differentiating, and sends to rlc layer; RLC receives that the back is inserted into formation L2 according to priority; Two SDU formations are upgraded as shown in Figure 5;
(8) RLC receives that bottom indication can send 12 RLC PDU, sends the SDU that finishes as yet though have among the formation L1, and RLC is priority treatment formation L2 still, takes out TCP bag D4, its segmentation is packed into continue the remainder of TCP bag D1 among the processing queue L1 behind the PDU again; Send and finish latter two SDU formation renewal as shown in Figure 6;
(9) RLC receives that the bottom indication can send 12 RLC PDU, high-priority queue L2 is empty, continues to handle remaining TCP bag D1 among the Low Priority Queuing L1, and D1 transmission finishing back is checked and still had idle PDU space, continue to send UDP bag D3, all filled up until the PDU space.
In the practical application, at different business, the priority judgment criterion will adjust accordingly, but the treatment principle of rlc layer is constant, all according to the data priority difference of upper strata indication, high-priority data is preferentially sent.
The embodiment of the invention also provides a kind of communication equipment, and this communication equipment can be terminal equipment, also can be network equipment.This communication equipment comprises that mainly the RLC data provide module and RLC module.
Described RLC data provide module, are used to be provided with the priority of business datum, and business datum and corresponding priorities information are sent to the RLC module; Described RLC module, be used to set up the formation of at least two different priorities, business datum is cached in the formation of respective priority according to described precedence information, is receiving when sending the data indication, send cached business data according to the priority height order of described formation.
Preferably, described RLC data provide the TCP bag of module free of data load to be set to limit priority.
Preferably, described RLC data provide module by increase the priority that the indicating services data are come in a priority territory in the interface message that sends the Service Data Unit request to the RLC module.
Should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spiritual scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. a data processing method is characterized in that, comprises the steps:
A, RLC data provide layer that the priority of business datum is set, and business datum and corresponding priorities information are sent to rlc layer;
The formation that B, rlc layer are set up at least two different priorities is cached to business datum in the formation of respective priority according to described precedence information;
C, rlc layer are received transmission data when indication of bottom, send cached business data according to the priority height order of described formation.
2. data processing method as claimed in claim 1 is characterized in that:
In the steps A, the RLC data provide the TCP bag of layer free of data load to be set to limit priority.
3. data processing method as claimed in claim 1 is characterized in that:
In the steps A, the RLC data provide layer by increase the priority that the indicating services data are come in a priority territory in the interface message that sends the Service Data Unit request to rlc layer.
4. data processing method as claimed in claim 1 is characterized in that step C further comprises:
C1, when each Transmission Time Interval arrives, rlc layer obtains the protocol Data Unit number N that this time can send according to the transmission data indication from bottom;
C2, rlc layer carry out cached business data to be filled in N the protocol Data Unit after segmentation/cascade according to the priority height order of described formation;
Protocol Data Unit after C3, rlc layer will be filled sends by logic channel.
5. a communication equipment is characterized in that, comprising:
The RLC data provide module, are used to be provided with the priority of business datum, and business datum and corresponding priorities information are sent to the RLC module;
The RLC module, be used to set up the formation of at least two different priorities, business datum is cached in the formation of respective priority according to described precedence information, is receiving when sending the data indication, send cached business data according to the priority height order of described formation.
6. communication equipment as claimed in claim 5 is characterized in that:
Described RLC data provide the TCP bag of module free of data load to be set to limit priority.
7. communication equipment as claimed in claim 5 is characterized in that:
Described RLC data provide module by increase the priority that the indicating services data are come in a priority territory in the interface message that sends the Service Data Unit request to the RLC module.
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Cited By (14)
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| WO2011015080A1 (en) * | 2009-08-06 | 2011-02-10 | 中兴通讯股份有限公司 | Data processing method and device |
| CN102271364A (en) * | 2010-06-03 | 2011-12-07 | 中国移动通信集团公司 | Data packet transmission method, device and system |
| WO2012002890A1 (en) * | 2010-07-02 | 2012-01-05 | Telefonaktiebolaget L M Ericsson (Publ) | Prioritization of data packets |
| CN102655447A (en) * | 2012-04-28 | 2012-09-05 | 北京创毅讯联科技股份有限公司 | Uploading data transmission method and device |
| CN103476065A (en) * | 2012-06-06 | 2013-12-25 | 普天信息技术研究院有限公司 | Transmission method for radio link control layer and device |
| WO2014094419A1 (en) * | 2012-12-21 | 2014-06-26 | 华为技术有限公司 | Data caching processing method, apparatus and system |
| CN104125607A (en) * | 2013-04-23 | 2014-10-29 | 中兴通讯股份有限公司 | User plane congestion processing method and device, and service gateway |
| US9019905B2 (en) | 2011-01-11 | 2015-04-28 | Telefonaktiebolaget L M Ericsson (Publ) | Uplink interference reduction at base station with restricted wireless access |
| CN105163397A (en) * | 2015-08-06 | 2015-12-16 | 大唐移动通信设备有限公司 | Message sending method and device |
| CN105871747A (en) * | 2016-03-24 | 2016-08-17 | 京信通信技术(广州)有限公司 | Communication system downlink data transmission method and system |
| CN106413095A (en) * | 2015-07-31 | 2017-02-15 | 联芯科技有限公司 | Data transmission method |
| CN107302554A (en) * | 2016-04-15 | 2017-10-27 | 九阳股份有限公司 | A kind of intelligent appliance off-line data processing method |
| CN107343296A (en) * | 2017-06-30 | 2017-11-10 | 合肥东芯通信股份有限公司 | A kind of method and device for improving the downstream rate that the TCP numbers based on LTE pass |
| US11503500B2 (en) * | 2017-11-28 | 2022-11-15 | Samsung Electronics Co., Ltd. | Method and a user equipment (UE) for transport layer optimization using a preemptive cross layer signaling |
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2008
- 2008-05-09 CN CNA2008101062635A patent/CN101267443A/en active Pending
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| CN101990252A (en) * | 2009-08-06 | 2011-03-23 | 中兴通讯股份有限公司 | Data processing method and device |
| WO2011015080A1 (en) * | 2009-08-06 | 2011-02-10 | 中兴通讯股份有限公司 | Data processing method and device |
| CN102271364A (en) * | 2010-06-03 | 2011-12-07 | 中国移动通信集团公司 | Data packet transmission method, device and system |
| WO2012002890A1 (en) * | 2010-07-02 | 2012-01-05 | Telefonaktiebolaget L M Ericsson (Publ) | Prioritization of data packets |
| US9107100B2 (en) | 2010-07-02 | 2015-08-11 | Telefonaktiebolaget L M Ericsson (Publ) | Prioritization of data packets |
| US9019905B2 (en) | 2011-01-11 | 2015-04-28 | Telefonaktiebolaget L M Ericsson (Publ) | Uplink interference reduction at base station with restricted wireless access |
| CN102655447A (en) * | 2012-04-28 | 2012-09-05 | 北京创毅讯联科技股份有限公司 | Uploading data transmission method and device |
| CN102655447B (en) * | 2012-04-28 | 2016-04-06 | 北京创毅讯联科技股份有限公司 | A kind of transmission method of upstream data and device |
| CN103476065A (en) * | 2012-06-06 | 2013-12-25 | 普天信息技术研究院有限公司 | Transmission method for radio link control layer and device |
| WO2014094419A1 (en) * | 2012-12-21 | 2014-06-26 | 华为技术有限公司 | Data caching processing method, apparatus and system |
| CN104125607A (en) * | 2013-04-23 | 2014-10-29 | 中兴通讯股份有限公司 | User plane congestion processing method and device, and service gateway |
| CN106413095A (en) * | 2015-07-31 | 2017-02-15 | 联芯科技有限公司 | Data transmission method |
| CN106413095B (en) * | 2015-07-31 | 2020-01-10 | 辰芯科技有限公司 | Data transmission method |
| CN105163397A (en) * | 2015-08-06 | 2015-12-16 | 大唐移动通信设备有限公司 | Message sending method and device |
| CN105871747A (en) * | 2016-03-24 | 2016-08-17 | 京信通信技术(广州)有限公司 | Communication system downlink data transmission method and system |
| CN107302554A (en) * | 2016-04-15 | 2017-10-27 | 九阳股份有限公司 | A kind of intelligent appliance off-line data processing method |
| CN107343296A (en) * | 2017-06-30 | 2017-11-10 | 合肥东芯通信股份有限公司 | A kind of method and device for improving the downstream rate that the TCP numbers based on LTE pass |
| US11503500B2 (en) * | 2017-11-28 | 2022-11-15 | Samsung Electronics Co., Ltd. | Method and a user equipment (UE) for transport layer optimization using a preemptive cross layer signaling |
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