CN104768136A - SN processing method for cluster service lagged access RLC - Google Patents
SN processing method for cluster service lagged access RLC Download PDFInfo
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- CN104768136A CN104768136A CN201510190682.1A CN201510190682A CN104768136A CN 104768136 A CN104768136 A CN 104768136A CN 201510190682 A CN201510190682 A CN 201510190682A CN 104768136 A CN104768136 A CN 104768136A
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Abstract
The invention discloses a SN processing method for cluster service lagged access RLC. The SN processing method comprises the base station side processing step and the terminal side processing step. According to the base station side processing step, 1 is added to the SN issued most recently, a calculation result is converted into a new SN, and the new SN is issued to an air interface through a group signal. According to the terminal side processing step, the SN value received by the air interface is configured into an initial serial number SN of a receiving window, it is guaranteed that data packet serial numbers issued by a group in the following period are within the receiving window of the lagged access terminal, a monitoring terminal can receive data issued by the group in time, the phenomenon that because the SN of the data packet of the RLC is not within the RLC receiving window, the data packet is lost is avoided, and access delay is saved.
Description
Technical field
The present invention relates to a kind of trunking communication sequence number processing method, particularly relate to a kind of group service lag access RLC SN processing method.
Background technology
LTE technology, for trunking communication, is the group user of group service in the feature that the LTE network realizing cluster is maximum, and the call mechanism of cluster.Cluster conversation mechanism is speaker user take dispatching desk as conversation object, is conversation object depending on dispatching desk.The voice of speaker user are mail to dispatching desk by base station.The speech data of speaker is transmitted to the base station at group's monitoring users place by dispatching desk.Base station again by data retransmission to community, be an entity user depending on group, speech data be handed down to the group user of logic.
Group itself is a logical subscriber.The all audience of speaker looks as a whole, and this entirety is referred to as group.The community at this audience place, all there is the example of a system side, this entity has the function of most of domestic consumer, and all monitoring users in this community are corresponding with this group's example.When the data of speaker are issued from air interface by this group's example, be just considered as all monitoring users in this community and all can receive.
There is the terminal of the access that lags in existing group service, because sequence number SN exceedes the scope accepting window, received packet is considered as invalid data and abandons by terminal, therefore there is the shortcoming that one end time cannot receive voice.
Summary of the invention
Object of the present invention is just that providing a kind of group service to lag to solve the problem accesses the SN processing method of RLC.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Group service lags and accesses a SN processing method of RLC, it is characterized in that: comprise base station side processing method and end side processing method;
Wherein RLC is Radio Link Control, SN is Sequence Number.
Described base station side processing method: obtain the last sequence number SN issued of this cluster RLC transmission window and carry out add-one operation, then convert its result of calculation to new SN, be issued to by group's signaling and eat dishes without rice or wine;
Described end side processing method: by the value receiving SN received from eating dishes without rice or wine, is configured to receiver window homing sequence SN.
Particularly, group's signaling period of described group issues the SN of the RLC packet being about to issue, and the value of the SN that described group signaling period issues is that the SN value of the RLC packet issued the last time adds one, more converted according to the generation principle of SN sequence number.
Particularly, after described monitor terminal receives group's signaling, by the value receiving SN received from eating dishes without rice or wine, be configured to receiver window homing sequence SN.
For realizing said method, the invention provides a kind of group service lag access RLC SN treatment facility, it is characterized in that: comprise base station and terminal, described base station comprises computing module, group's signalling module and sending module;
Described computing module, for taking out the SN of the packet of the last RLC issued from described sending module, and its value is carried out add one operation, the principle according to SN converts SN to.
Described group signalling module, for the SN calculated by described computing module, adds in group's signaling, by group's transmitting signaling downwards to eating dishes without rice or wine.
Described sending module, for the SN of the RLC packet that provides the last time to issue for described computing module, is issued to group's signaling and formality packet and eats dishes without rice or wine.
Particularly, described terminal comprises receiver module and processing module, comprising:
Described receiver module, for receiving group from mouth group's signaling of issuing of sky and group data bag.
Described processing module, for being set to the homing sequence number of the receiver window of RLC by the SN issued in group's signaling.
Particularly, described processing module only carries out corresponding calculation process when the terminal of the access that lags accesses first, after described terminal adds group, without the need to again carrying out this type of process.
Beneficial effect of the present invention is:
Group service of the present invention lags the sequence number processing method of access RLC by the combination of base station side processing method and end side processing method, and by transmitting-receiving and the deal with data of base station equipment and terminal equipment, the data making monitor terminal can receive group in time to issue, avoid because the SN of the packet of RLC is not at RLC receiver window, thus the imagination of packet discard, save access delay.
Accompanying drawing explanation
Fig. 1 is that group service of the present invention lags the workflow diagram of base station side processing method of SN processing method of access RLC;
Fig. 2 is that group service of the present invention lags the workflow diagram of end side processing method of SN processing method of access RLC.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.
Group service of the present invention lags and accesses the SN treatment facility of RLC, and comprise base station and terminal, described base station comprises computing module, group's signalling module and sending module, and described terminal comprises receiver module and processing module.
Fig. 1 is that group service of the present invention lags the base station side schematic flow sheet of SN processing method of access RLC, and as shown in the figure, the lag SN processing method of access RLC of this group service comprises the following steps:
101, the current frame number of system and subframe is obtained.
Periodically issue during group's signaling of group service, after group activates, the monitor terminal of this group differs and just adds group when group activates surely, and a period of time just starts shooting because group activates afterwards to there is part terminal, or enter community from blind area, now group activates a period of time.Group adds group and is called the access that lags after activating a period of time.
Group can add group in order to ensure the terminal of the access that lags, and is issued in group's signaling later stages such as foundations carrying, and this cycle is by the frame number of current system and subframe numbers calculating, therefore needs the current frame number of acquisition and subframe numbers.
102, judge that present sub-frame is the need of issuing group's signaling.
Calculate the opportunity of group's transmitting signaling downwards according to current frame number and subframe numbers, as the moment of current Bu Shi group transmitting signaling downwards, then do not carry out any operation; Be the moment issuing group's signaling if current, then carry out 103 steps.
103, the SN sequence number of the RLC packet that described group sends next time is calculated.
The sequence number of the RLC issued according to the last time adds one, the result calculated is being changed, generate the SN of RLC, its transfer process is at 3GPP (the 3rd Generation Partnership Project of LTE, be called for short 3GPP) 36 serial protocols open and always have regulation, no longer describe herein.
104, by 103 calculate final SN by group's transmitting signaling downwards to eating dishes without rice or wine.
The modulation system of group's signaling and method for scrambling etc., early have an agreement between base station and terminal, and the existing existing techniques in realizing of its agreement, no longer describes herein.
Fig. 2 is that group service of the present invention lags the end side schematic flow sheet of SN processing method of access RLC, and as shown in the figure, the lag SN processing method of access RLC of this group service comprises the following steps:
201, the terminal accessed that lags accepts group's signaling
The method of the terminal reception group signaling accessed that lags and principle existing regulation in CCSA (ChinaCommunications Standards Association), no longer describe herein
202, the radio bearer required for group is set up according to group's signaling.
Radio bearer among CCSAs the existing regulation of monitoring users required for group's signaling foundation, no longer describes herein.
203, the SN value in group's signaling is set to the initial SN of the receiver window of RLC.
According to 3GPP agreement, the receiver window of RLC only has the half of SN window length, therefore, if the initial value of receiver window and the packet eating dishes without rice or wine to issue exceed the length of window, RLC receiving terminal by think receive be invalid data and abandon.
In public network, be man-to-man relation between the example of base station side and terminal, two ends start simultaneously, therefore there is not the length that length that data that transmitting terminal sends exceed receiving terminal receiver window reaches window.But in group system, due to the relation that group's example of base station side and monitor terminal are one-to-manies, exist after group's example activates a very long time, terminal adds the situation of group just now, and now the initial SN of iSCSI receiving end window and the SN difference eating dishes without rice or wine to issue be can not determine.Therefore easily occur because of SN sequence number and the phenomenon of packet loss.Therefore by the SN of group's transmitting signaling downwards being set to the initial SN of receiving terminal, can guarantee that receiving terminal is consistent with transmitting terminal SN, solving the access problem that lags of group service.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. group service lags and accesses a SN processing method of RLC, it is characterized in that: comprise base station side processing method and end side processing method;
Described base station side processing method: obtain the last sequence number SN issued of this cluster RLC transmission window and carry out add-one operation, then convert its result of calculation to new SN, be issued to by group's signaling and eat dishes without rice or wine;
Described end side processing method: by the value receiving SN received from eating dishes without rice or wine, is configured to receiver window homing sequence SN.
2. group service according to claim 1 lags and accesses the SN processing method of RLC, it is characterized in that: group's signaling period of described group issues the SN of the RLC packet being about to issue, the value of the SN that described group signaling period issues is that the SN value of the RLC packet issued the last time adds one, more converted according to the generation principle of SN sequence number.
3. group service according to claim 1 lags and accesses the SN processing method of RLC, it is characterized in that: after described monitor terminal receives group's signaling, by the value receiving SN received from eating dishes without rice or wine, being configured to receiver window homing sequence SN.
4. group service lags and accesses a SN treatment facility of RLC, and it is characterized in that: comprise base station and terminal, described base station comprises computing module, group's signalling module and sending module;
Described computing module, for taking out the SN of the packet of the last RLC issued from described sending module, and its value is carried out add one operation, the principle according to SN converts SN to.
Described group signalling module, for the SN calculated by described computing module, adds in group's signaling, by group's transmitting signaling downwards to eating dishes without rice or wine.
Described sending module, for the SN of the RLC packet that provides the last time to issue for described computing module, is issued to group's signaling and formality packet and eats dishes without rice or wine.
5. group service according to claim 4 lags and accesses the SN treatment facility of RLC, it is characterized in that: described terminal comprises receiver module and processing module, comprising:
Described receiver module, for receiving group from mouth group's signaling of issuing of sky and group data bag.
Described processing module, for being set to the homing sequence number of the receiver window of RLC by the SN issued in group's signaling.
6. group service according to claim 5 lags and accesses the SN treatment facility of RLC, it is characterized in that: described processing module only carries out corresponding calculation process when the terminal of the access that lags accesses first, after described terminal adds group, without the need to again carrying out this type of process.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107770231A (en) * | 2016-08-22 | 2018-03-06 | 中国移动通信有限公司研究院 | Distributed data transport method and device based on UM rlc protocols, UM RLC entities |
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| CN103179558A (en) * | 2012-09-20 | 2013-06-26 | 中兴通讯股份有限公司 | Method and system for cluster system implementing group calling encryption |
| CN103209395A (en) * | 2012-01-12 | 2013-07-17 | 普天信息技术研究院有限公司 | Sending and receiving method of clustering paging message |
| CN104079371A (en) * | 2013-03-27 | 2014-10-01 | 成都鼎桥通信技术有限公司 | Method, equipment and system of data communication |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103209395A (en) * | 2012-01-12 | 2013-07-17 | 普天信息技术研究院有限公司 | Sending and receiving method of clustering paging message |
| CN103179558A (en) * | 2012-09-20 | 2013-06-26 | 中兴通讯股份有限公司 | Method and system for cluster system implementing group calling encryption |
| CN104079371A (en) * | 2013-03-27 | 2014-10-01 | 成都鼎桥通信技术有限公司 | Method, equipment and system of data communication |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107770231A (en) * | 2016-08-22 | 2018-03-06 | 中国移动通信有限公司研究院 | Distributed data transport method and device based on UM rlc protocols, UM RLC entities |
| CN107770231B (en) * | 2016-08-22 | 2019-11-26 | 中国移动通信有限公司研究院 | Distributed data transport method and device, UM RLC entity based on UM rlc protocol |
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Application publication date: 20150708 |