CN108347308A - The method of reseptance and device of point multipoint message traffic - Google Patents
The method of reseptance and device of point multipoint message traffic Download PDFInfo
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- CN108347308A CN108347308A CN201710052407.2A CN201710052407A CN108347308A CN 108347308 A CN108347308 A CN 108347308A CN 201710052407 A CN201710052407 A CN 201710052407A CN 108347308 A CN108347308 A CN 108347308A
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- data packet
- serial number
- receiving terminal
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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
- H04L1/1607—Details of the supervisory signal
- H04L1/1642—Formats specially adapted for sequence numbers
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application discloses a kind of method of reseptance of point-to-multipoint service and devices, including：When user equipment (UE) is added to an existing group, the first data packet received after the addition is preserved, and according to the service bearer state variable of user described in the sequence number update of the data packet；The UE carries out reception control according to the service bearer state variable, to subsequently received data packet.Using the present invention, it can be ensured that the user of existing group not lost data packets are newly added, and then ensure the business continuance that the user of existing group is newly added.
Description
Technical field
The present invention relates to mobile communication technologies, more particularly to the method for reseptance and device of a kind of point multipoint message traffic.
Background technology
System is that each business establishes a carrying for transmission data in general communication system, each carries the L2 for including
(RLC/PDCP) entity initializes each variable at the beginning of foundation, and business updates and safeguard variate-value in carrying out, when receiving
Or when transmission data, according to the variable calculated value currently safeguarded and the sequence number value for receiving data packet, the data packet received is judged
Whether retain, submit or abandons.When variable calculated value not meeting practical transceiving data the case where, it may appear that accidentally lose or repeat to pass
Hand over data packet, wherein accidentally lose data packet and be affected to the real time business of business especially voice class, can cause voice lose word and
Discontinuously, user's perception is influenced.
The carrying entity of existing business is for single-point mostly to single-point service design, receiving-transmitting sides bearer data transmission
Entity simultaneously established when business starts, discharged when business terminates, move when, re-establish entity after switching.This industry
The carrying entity of business can also be used for point multipoint message traffic, such as cluster broadcasting service.For the business of point-to-multipoint, multiple users
The entity of a public bearer data transmission.
For this broadcasting service of group call, it is being switched to the new cell that group has been established or is lagging into a group
Group, since the group service carrying for the user for having been set up before the group service carrying in this cell, and being newly added is new
It builds soon, all kinds of state variables of L2 entities in carrying are initialized when establishing, in this way, will so that user newly is added
Service bearer state variable and cell have service bearer state variable it is inconsistent.The state variable packet of service bearer
It includes：The beginning and end of reception/transmission window, and the sequence number of data packet that receives, expect the sequence of the data packet received
Number.For the user of built group is newly added, the new data initially received can not connect due to recipient's verification sequence number
It receives in window and is dropped, until the data sequence number received meets the requirement of the state variable of data transfer entity, during this
Mass data packet will be lost, as described above, if packet loss is more so that the range that can be born more than Voice decoder, it will
It causes to lose word or audio discontinuity, it is very bad to influence user's perception, or even causes service disconnection.
It can be seen that in existing system, before user is added when already present group, mass data packet can be abandoned, from
And cause service disconnection.
Invention content
In view of this, the main purpose of the present invention is to provide a kind of method of reseptance of point-to-multipoint service and device, it can
To ensure newly to be added the business continuance of the user of existing group.
In order to achieve the above object, technical solution proposed by the present invention is：
A kind of method of reseptance of point-to-multipoint service, including：
When user equipment (UE) is added to an existing group, the first data packet received after the addition, and root are preserved
The service bearer state variable of user described in sequence number update according to the data packet；
The UE carries out reception control according to the service bearer state variable, to subsequently received data packet.
A kind of reception device of point-to-multipoint service, including：
State variable updating unit, for when user equipment (UE) is added to an existing group, after preserving the addition
The first data packet received, and according to the service bearer state variable of user described in the sequence number update of the data packet；
Reception control unit, for according to the service bearer state variable, the data packet subsequently received to the UE
Carry out reception control.
In conclusion the method for reseptance and device of point-to-multipoint service proposed by the present invention, new that the use for having group is added
Family according to be an actually-received data sequence number maintenance service carrying state variable and preserve first data packet, can to avoid with
The problem of mass data packet loss when having group is newly added in family, it is ensured that the continuity of customer service.
Description of the drawings
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention；
Fig. 2 is the apparatus structure schematic diagram of the embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in further detail.
Core of the invention thought is：The first data packet sequence row number received according to new addition group user holds business
The state variable of load is updated, in this way, when group can newly be added to avoid user the problem of mass data packet loss, it is ensured that is used
The continuity of family business.
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention, as shown in Figure 1, the point-to-multipoint industry that the embodiment is realized
The method of reseptance of business includes mainly：
Step 101, when user equipment (UE) is added to an existing group, preserve the first data received after the addition
Packet, and according to the service bearer state variable of user described in the sequence number update of the data packet.
Here, the existing group refers to that UE has been established in group and is added later, i.e. the initial users of the non-groups of UE at
Member, concrete scene can be that an existing group in the new cell, either, UE is added after UE is switched in a new cell
Lag an existing group being added in this cell.
It will no longer abandon and connect for the first time the difference is that after UE is added to an existing group with existing scheme in this step
The data packet received, and its service bearer state variable is updated according to the serial number of the data packet received for the first time,
So that during receipt of subsequent, reception control is carried out according to the updated service bearer state variable, receiving terminal can be made
Service bearer state variable and the service bearer state variable of transmitting terminal be consistent, so as to ensure to be not in a large amount of
The case where packet discard.
It in practical applications, can be according to transmission affirmation mode (i.e. Unacknowledged Mode UM or the confirmation mould that UE is specifically used
Formula AM), service bearer state variable is updated, preferably, following methods realization may be used：
When using Unacknowledged Mode UM, the update is carried out according to VR (UH)=VR (UR)=VR (UX)=REC_SN；Its
In, the VR (UH) is the maximum serial number of the UM pattern received data packets of virtual receiving terminal, and the VR (UR) is virtual receiving terminal
UM pattern data accepted packets serial number, the VR (UX) be virtual receiving terminal UM patterns triggering reorder data packet most
Big serial number, the REC_SN are the sequence number of the first data packet.
When using affirmation mode AM patterns, the update is carried out according to VR (H)=VR (R)=VR (X)=REC_SN；Its
In, the VR (H) is the maximum serial number of virtual receiving terminal AM pattern received data packets, and the VR (R) is virtual receiving terminal AM moulds
The serial number of formula data accepted packet, the VR (X) are the maximum serial number that virtual receiving terminal AM patterns trigger the data packet that reorders, institute
State the sequence number that REC_SN is the first data packet.
Step 102, the UE carry out reception control according to the service bearer state variable to subsequently received data packet
System.
Here, as noted previously, as being to carry out reception control using the updated service bearer state variable of step 101,
It can thus be avoided initial service loaded state variable when being initially added according to UE group in existing scheme carries out reception control
When, it the problem of generated mass efficient data packet is dropped, so as to ensure being normally carried out for UE point-to-multipoint services, keeps away
Exempt from the influence to real time business.
Preferably, when using Unacknowledged Mode UM, institute is carried out according to VR (UH)=VR (UR)=VR (UX)=REC_SN
State update.
Wherein, the VR (UH) is the maximum serial number of the UM pattern received data packets of virtual receiving terminal；The state variable is protected
The sequence number SN held, after the SN values of the UMD PDU with highest SN values in the UMD PDU of reception, and as arranging again
The coboundary of sequence window.
The VR (UR) is the serial number of the UM pattern data accepted packets of virtual receiving terminal；The state variable keeps earliest
, SN values that be also regarded as the UMD PDU to be reordered.
The VR (UX) is that the UM patterns of virtual receiving terminal trigger the maximum serial number for the data packet that reorders；The state variable is protected
The SN values held, after triggering the SN values of UMD PDU of t-Reordering.
The REC_SN is the sequence number of the first data packet.
Preferably, when using affirmation mode AM patterns, described in VR (H)=VR (R)=VR (X)=REC_SN progress
Update.
Wherein, the VR (H) is the maximum serial number of virtual receiving terminal AM pattern received data packets, what which kept
SN values, immediately following in the RLC data PDU received, after the SN values of the highest RLC data PDU of SN.
The VR (R) is the serial number of virtual receiving terminal AM patterns data accepted packet, the SN values which keeps, tightly
It follows after the last AMD PDU being sequentially fully received, and its lower boundary as reception window.
The VR (X) is the maximum serial number that virtual receiving terminal AM patterns trigger the data packet that reorders, the SN that this variable is kept
Value, after triggering the SN of RLC data PDU of t-Reordering.
Fig. 2 is the structural schematic diagram of the reception device of the corresponding point-to-multipoint service of the above method, as shown in Fig. 2, should
Device includes：
State variable updating unit, for when user equipment (UE) is added to an existing group, after preserving the addition
The first data packet received, and according to the service bearer state variable of user described in the sequence number update of the data packet；
Reception control unit, for according to the service bearer state variable, the data packet subsequently received to the UE
Carry out reception control.
Preferably, the state variable updating unit, is used for when using Unacknowledged Mode UM, according to VR (UH)=VR
(UR)=VR (UX)=REC_SN carries out the update；Wherein, the VR (UH) is that the UM patterns of virtual receiving terminal receive data
The maximum serial number of packet, the VR (UR) are the serial number of the UM pattern data accepted packets of virtual receiving terminal, and the VR (UX) is void
The UM patterns of quasi- receiving terminal trigger the maximum serial number for the data packet that reorders, and the REC_SN is the sequence of the first data packet
Number.
Preferably, state variable updating unit, for when using affirmation mode AM patterns, according to VR (H)=VR (R)=
VR (X)=REC_SN carries out the update；Wherein, the VR (H) is the maximum sequence of virtual receiving terminal AM pattern received data packets
Number, the VR (R) is the serial number of virtual receiving terminal AM patterns data accepted packet, and the VR (X) is virtual receiving terminal AM patterns
The maximum serial number for the data packet that reorders is triggered, the REC_SN is the sequence number of the first data packet.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of method of reseptance of point-to-multipoint service, which is characterized in that including：
When user equipment (UE) is added to an existing group, the first data packet received after the addition is preserved, and according to institute
State the service bearer state variable of user described in the sequence number update of data packet；
The UE carries out reception control according to the service bearer state variable, to subsequently received data packet.
2. according to the method described in claim 1, it is characterized in that, when using Unacknowledged Mode UM when, according to VR (UH)=VR
(UR)=VR (UX)=REC_SN carries out the update；Wherein, the VR (UH) is that the UM patterns of virtual receiving terminal receive data
The maximum serial number of packet, the VR (UR) are the serial number of the UM pattern data accepted packets of virtual receiving terminal, and the VR (UX) is void
The UM patterns of quasi- receiving terminal trigger the maximum serial number for the data packet that reorders, and the REC_SN is the sequence of the first data packet
Number.
3. according to the method described in claim 1, it is characterized in that, when using affirmation mode AM patterns when, according to VR (H)=VR
(R)=VR (X)=REC_SN carries out the update；Wherein, the VR (H) be virtual receiving terminal AM patterns received data packet most
Big serial number, the VR (R) are the serial number of virtual receiving terminal AM patterns data accepted packet, and the VR (X) is virtual receiving terminal AM
Pattern triggers the maximum serial number for the data packet that reorders, and the REC_SN is the sequence number of the first data packet.
4. a kind of reception device of point-to-multipoint service, which is characterized in that including：
State variable updating unit, for when user equipment (UE) is added to an existing group, being received after preserving the addition
First data packet, and according to the service bearer state variable of user described in the sequence number update of the data packet；
Reception control unit, for according to the service bearer state variable, the data packet subsequently received to the UE to carry out
Receive control.
5. device according to claim 4, which is characterized in that the state variable updating unit, for when using non-true
When recognizing pattern UM, the update is carried out according to VR (UH)=VR (UR)=VR (UX)=REC_SN；Wherein, the VR (UH) is void
The maximum serial number of the UM pattern received data packets of quasi- receiving terminal, the VR (UR) are the UM pattern data accepteds of virtual receiving terminal
The serial number of packet, the VR (UX) are that the UM patterns of virtual receiving terminal trigger the maximum serial number for the data packet that reorders, the REC_SN
For the sequence number of the first data packet.
6. device according to claim 4, which is characterized in that state variable updating unit, for when using affirmation mode
When AM patterns, the update is carried out according to VR (H)=VR (R)=VR (X)=REC_SN；Wherein, the VR (H) is virtual receives
It is the serial number of virtual receiving terminal AM patterns data accepted packet, institute to hold the maximum serial number of AM pattern received data packets, the VR (R)
It is the maximum serial number that virtual receiving terminal AM patterns trigger the data packet that reorders to state VR (X), and the REC_SN is the first data
The sequence number of packet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052407.2A CN108347308A (en) | 2017-01-22 | 2017-01-22 | The method of reseptance and device of point multipoint message traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052407.2A CN108347308A (en) | 2017-01-22 | 2017-01-22 | The method of reseptance and device of point multipoint message traffic |
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| Publication Number | Publication Date |
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| CN108347308A true CN108347308A (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710052407.2A Pending CN108347308A (en) | 2017-01-22 | 2017-01-22 | The method of reseptance and device of point multipoint message traffic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114499771A (en) * | 2020-11-13 | 2022-05-13 | 成都鼎桥通信技术有限公司 | Feedback and retransmission method and device of ACK/NACK information of MBS |
| WO2022205191A1 (en) * | 2021-03-31 | 2022-10-06 | 北京小米移动软件有限公司 | Method for configuring receive window of pdcp entity, and apparatus therefor |
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| US20070183328A1 (en) * | 2006-02-06 | 2007-08-09 | Innovative Sonic Limited | Method of resetting radio link control entity in a mobile communications system and related apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114499771A (en) * | 2020-11-13 | 2022-05-13 | 成都鼎桥通信技术有限公司 | Feedback and retransmission method and device of ACK/NACK information of MBS |
| CN114499771B (en) * | 2020-11-13 | 2023-07-18 | 成都鼎桥通信技术有限公司 | Feedback and retransmission method and device for ACK/NACK information of MBS |
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| CN115552930A (en) * | 2021-03-31 | 2022-12-30 | 北京小米移动软件有限公司 | Method and device for configuring receiving window of PDCP entity |
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Application publication date: 20180731 |
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