CN104469859A - Method and system for improving data transmission performance - Google Patents
Method and system for improving data transmission performance Download PDFInfo
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- CN104469859A CN104469859A CN201310438477.3A CN201310438477A CN104469859A CN 104469859 A CN104469859 A CN 104469859A CN 201310438477 A CN201310438477 A CN 201310438477A CN 104469859 A CN104469859 A CN 104469859A
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- user side
- control layer
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- measurement report
- transmission performance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
The invention provides a method and system for improving the data transmission performance. The method for improving the data transmission performance comprises the steps that a wireless resource control layer on a user side reports a measurement report, and a wireless link control layer on the user side is informed to conduct process switching at any moment; after the wireless link control layer on the user side receives an instruction of the wireless resource control layer on the user side, an uplink is triggered to send an uplink state packet and a P position data packet; after uplink resources distributed by a network are received, a user sends the measurement report, the uplink state packet and the P position data packet to a network side; a source base station on the network side conducts process switching according to the measurement report, confirms and releases a downlink data packet according to the uplink state packet and returns the downlink state packet to the user side according to the P position data packet; the user side confirms and releases the uplink data packet according to the downlink data packet. According to the method and system for improving the data transmission performance, uplink data packets and downlink data packets which are successfully sent are confirmed as many as possible before switching, and the probability of ineffective re-transmission of several packets during switching is reduced.
Description
Technical field
The present invention relates to wireless technical field, particularly a kind of method and system improving data transmission performance.
Background technology
Specify in 3GPP (3Generation Partnership Project) agreement 36.323sec5.2.1.1: when upper layer request PDCP(PDCP) when rebuilding, UE(user) should: the head compression protocol (if configuring) rebuilding up link; During process of reconstruction, use the key(key that cryptographic algorithm and upper strata provide) encryption; Successfully to transmit but the PDCPSDU do not confirmed by lower floor from first corresponding PDCP PDU, before PDCP as described below rebuilds, perform COUNT value corresponding to all from then on PDCP SDU to start, by re-transmission or the transmission of the PDCP SDU of the PDCP SN value correspondence of COUNT value ascending order arrangement.
Specify again in 3GPP (3Generation Partnership Project) agreement 36.323sec5.3.1: when upper layer request PDCP rebuilds, UE answers: if this radio bearer is used for sending a PDCP state reporting in up link by upper-layer configured, after processing the PDCP DataPDU come from lower floor's acceptance because lower floor rebuilds, UE compiles state reporting like this according to following instruction, as as described in 5.2.2.1 joint, and first PDCP PDU that this state reporting transmits as this is passed to low layer.
In the prior art, as depicted in figs. 1 and 2, the switching based on X2 and the switching based on S1 is mainly comprised.Based in the switching flow of X2, have the connection of circuit between former base station and target BS, when switching, source base station and target BS can directly be consulted to switch.And based in the switching flow of S1, between former base station and target BS, there is no direct connection, when switching, source base station and target BS need to consult to switch by third party.
But there are the following problems for prior art:
1) when switching, if do not configure status report, then can retransmit all unacknowledged bags, and in fact opposite end may have received some bag, retransmit these paid-in bags and can cause the wasting of resources, unnecessary re-transmission also has unnecessary time delay expense.
2) when switching, if be configured with status report, then because status report is after handover success, the Traffic Channel of Target cell sends, according to status report, opposite end judges which packets need retransmits again.Complete owing to switching, then UE and network all may not need the packet retransmitted to retransmit to some.
3) when switching, source base station S-eNB needs to forward all unacknowledged downlink data packet to target BS T-eNB, wherein some packet in fact UE receive, namely do not need the packet retransmitted in fact to be unnecessaryly be forwarded to target BS T-eNB from source base station S-eNB yet.
Summary of the invention
The object of the present invention is to provide a kind of method and system improving data transmission performance, to solve prior art when handover between cells, there is deactivating retransmission, cause the problem of the wasting of resources.
For solving the problems of the technologies described above, the invention provides a kind of method improving data transmission performance, comprising:
The radio resource control layer of user side reports a measurement report;
After the wireless chain control layer of user side receives the instruction of the radio resource control layer of user side, trigger up transmission uplink state bag and put the packet of P position;
After receiving the ascending resource of network allocation, the packet that user side sends described measurement report, uplink state bag and puts P position is to network side;
The source base station of network side, according to measurement report, carries out switching flow; Confirm according to uplink state bag and release downlink data packet; Packet according to putting P position replys user side downstream state bag;
User side confirms according to downstream state bag and release upstream data bag.
Further, in the method for described raising data transmission performance, described measurement report comprises: A3 event and B2 event.
Further, in the method for described raising data transmission performance, report the step of a measurement report simultaneously at the radio resource control layer of user side, the radio resource control layer of user side also notifies that the wireless chain control layer of user side switches flow process at any time.
Meanwhile, the present invention also provides a kind of system improving data transmission performance, comprising:
The radio resource control layer of user side, for reporting a measurement report;
The wireless chain control layer of user side, for receive the radio resource control layer of user side instruction after, trigger up transmission uplink state bag and put the packet of P position;
User side, for receive network allocation ascending resource after, the packet sending described measurement report, uplink state bag and put P position is to network side;
The source base station of network side, for according to measurement report, carries out switching flow; Confirm according to uplink state bag and release downlink data packet; Packet according to putting P position replys user side downstream state bag;
User side, also for confirming according to downstream state bag and release upstream data bag.
Further, in the system of described raising data transmission performance, described measurement report comprises: A3 event and B2 event.
Further, in the system of described raising data transmission performance, the radio resource control layer of described user side also for, notify that the wireless chain control layer of user side switches flow process at any time.
A kind of method and system improving data transmission performance provided by the invention, there is following beneficial effect: invention increases one and notify wireless chain control layer (RLC) trigger state bag by radio resource control layer (RRC) and trigger the mode of putting P bit data bag, make the up-downgoing packet that before switching, confirmation as much as possible has successfully sent, reduce the deactivating retransmission switched some bag.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art based on the switching flow of X2;
Fig. 2 is the schematic diagram of prior art based on the switching flow of S1;
Fig. 3 is the schematic flow sheet that the present invention improves the method for data transmission performance.
Embodiment
Be described in further detail below in conjunction with the method and system of the drawings and specific embodiments to the raising data transmission performance that the present invention proposes.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
As shown in Figure 3, the invention provides a kind of method improving data transmission performance, comprising:
S31: the radio resource control layer RRC of user side reports a measurement report; Meanwhile, the radio resource control layer RRC of user side also notifies that the wireless chain control layer RLC of user side switches flow process at any time.
Concrete, in the present invention, described measurement report comprises: A3 event and B2 event.
At present, being all that A3 event triggers switching in ubiquitous system, is all that B2 event triggers switching between system.
When switching between LTE community, need UE reporting measurement reports, described measurement report comprises Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ) etc., and reports to be divided into and periodically report reporting of triggering with event.
Periodically last week is by base station assigns, the direct reporting measurement reports of UE;
What event triggered reports and is divided into the event between the event of same system frequently and different system.
Event with frequency system comprises:
1, event A1, Serving cell is better than absolute thresholding, and this event can be used for closing the measurement of some minizone;
2, event A2, Serving cell is worse than absolute thresholding, and this event can be used for opening the measurement of some minizone, the operation because this event may switch after occurring etc.;
3, event A3, neighbor cell is better than Serving cell, and this event occurs whether can be switched to neighbor cell with deciding UE;
4, event A4, neighbor cell is better than absolute thresholding;
5, event A5, Serving cell is worse than an absolute thresholding and neighbor cell is better than an absolute thresholding, and this time also can be used for supporting to switch.
Time between different system comprises:
1, event B1, neighbor cell is better than absolute thresholding;
2, event B2, Serving cell is worse than an absolute thresholding and neighbor cell is better than an absolute thresholding, and this event may to switch etc. after occurring operation.
Especially, in this step, user side RRC is beforehand with switch decision, and when reporting the measurement report that may cause switching, also notify the RLC of UE side, instruction likely can trigger switching subsequently.
S32: the wireless chain control layer RLC of user side receive the instruction of radio resource control layer RRC of user side after, trigger up transmission uplink state bag and put the packet of P position;
Especially, in this step, trigger RLC up transmission uplink state bag and the packet putting P position, make the up-downgoing packet that before switching, confirmation as much as possible has occurred, reduce the deactivating retransmission switching and some is wrapped.
S33: after receiving the ascending resource of network allocation, the packet that user side sends described measurement report, uplink state bag and puts P position is to network side;
S34: the source base station of network side, according to measurement report, carries out switching flow; Confirm according to uplink state bag and release downlink data packet; Packet according to putting P position replys user side downstream state bag;
S35: user side confirms according to downstream state bag and release upstream data bag.
Especially, equally, the source base station of network side is also adopted and is used the same method, before the handover the up-downgoing packet that occurred of confirmation as much as possible, reduces the deactivating retransmission switched some bag.
Meanwhile, the present invention also provides a kind of system improving data transmission performance, comprising:
The radio resource control layer RRC of user side, for reporting a measurement report; Meanwhile, notify that the wireless chain control layer RLC of user side switches flow process at any time.
The wireless chain control layer RLC of user side, for receive user side the instruction of radio resource control layer RRC after, trigger up transmission uplink state bag and put the packet of P position;
User side, for receive network allocation ascending resource after, the packet sending described measurement report, uplink state bag and put P position is to network side;
The source base station of network side, for according to measurement report, carries out switching flow; Confirm according to uplink state bag and release downlink data packet; Packet according to putting P position replys user side downstream state bag;
User side, also for confirming according to downstream state bag and release upstream data bag.
Especially, in the present invention, described measurement report comprises: A3 event and B2 event.
When switching between LTE community, need UE reporting measurement reports, described measurement report comprises Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ) etc., and reports to be divided into and periodically report reporting of triggering with event.
Periodically last week is by base station assigns, the direct reporting measurement reports of UE;
What event triggered reports and is divided into the event between the event of same system frequently and different system.
Event with frequency system comprises:
1, event A1, Serving cell is better than absolute thresholding, and this event can be used for closing the measurement of some minizone;
2, event A2, Serving cell is worse than absolute thresholding, and this event can be used for opening the measurement of some minizone, the operation because this event may switch after occurring etc.;
3, event A3, neighbor cell is better than Serving cell, and this event occurs whether can be switched to neighbor cell with deciding UE;
4, event A4, neighbor cell is better than absolute thresholding;
5, event A5, Serving cell is worse than an absolute thresholding and neighbor cell is better than an absolute thresholding, and this time also can be used for supporting to switch.
Time between different system comprises:
1, event B1, neighbor cell is better than absolute thresholding;
2, event B2, Serving cell is worse than an absolute thresholding and neighbor cell is better than an absolute thresholding, and this event may to switch etc. after occurring operation.
By the combination of said structure, invention increases one notify wireless chain control layer (RLC) trigger state bag by radio resource control layer (RRC) and trigger the mode of putting P bit data bag, make the up-downgoing packet that before switching, confirmation as much as possible has successfully sent, reduce the deactivating retransmission switched some bag.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection range of claims.
Claims (6)
1. improve a method for data transmission performance, it is characterized in that, comprising:
The radio resource control layer of user side reports a measurement report;
After the wireless chain control layer of user side receives the instruction of the radio resource control layer of user side, trigger up transmission uplink state bag and put the packet of P position;
After receiving the ascending resource of network allocation, the packet that user side sends described measurement report, uplink state bag and puts P position is to network side;
The source base station of network side, according to measurement report, carries out switching flow; Confirm according to uplink state bag and release downlink data packet; Packet according to putting P position replys user side downstream state bag;
User side confirms according to downstream state bag and release upstream data bag.
2. the method improving data transmission performance as claimed in claim 1, it is characterized in that, described measurement report comprises: A3 event and B2 event.
3. the method improving data transmission performance as claimed in claim 1, it is characterized in that, report the step of a measurement report simultaneously at the radio resource control layer of user side, the radio resource control layer of user side also notifies that the wireless chain control layer of user side switches flow process at any time.
4. improve a system for data transmission performance, it is characterized in that, comprising:
The radio resource control layer of user side, for reporting a measurement report;
The wireless chain control layer of user side, for receive the radio resource control layer of user side instruction after, trigger up transmission uplink state bag and put the packet of P position;
User side, for receive network allocation ascending resource after, the packet sending described measurement report, uplink state bag and put P position is to network side;
The source base station of network side, for according to measurement report, carries out switching flow; Confirm according to uplink state bag and release downlink data packet; Packet according to putting P position replys user side downstream state bag;
User side, also for confirming according to downstream state bag and release upstream data bag.
5. the system improving data transmission performance as claimed in claim 4, it is characterized in that, described measurement report comprises: A3 event and B2 event.
6. the as claimed in claim 4 system improving data transmission performance, is characterized in that, the radio resource control layer of described user side also for, notify that the wireless chain control layer of user side switches flow process at any time.
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| CN111818601A (en) * | 2015-05-27 | 2020-10-23 | 华为技术有限公司 | User equipment switching method and device |
| CN112997577A (en) * | 2018-10-12 | 2021-06-18 | 联发科技（新加坡）私人有限公司 | Data packet retransmission method for resource control connection |
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