CN104219719B - Base station switch method and system - Google Patents

Base station switch method and system Download PDF

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CN104219719B
CN104219719B CN201410483268.5A CN201410483268A CN104219719B CN 104219719 B CN104219719 B CN 104219719B CN 201410483268 A CN201410483268 A CN 201410483268A CN 104219719 B CN104219719 B CN 104219719B
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target
base station
user equipment
radio bearer
packet data
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CN104219719A (en
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黄勇
吴治鸣
李宝龙
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Comba Network Systems Co Ltd
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Comba Telecom Systems China Ltd
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Abstract

A kind of base station switch method and system, wherein method include：User equipment switches from source base station to target BS；Judge whether the Signaling Radio Bearer of the user equipment receives first upstream message in the packet data convergence protocol of target BS, if so, then judging that the user equipment is successfully accessed target BS；The target BS is transmitted up-downgoing data with the user equipment.This programme using PDCP physical layers by switch UE SRB uplink receivings to first upstream message by the way of judging whether UE accesses, can judge whether UE has been successfully accessed in time.Meanwhile judge because being realized in PDCP, therefore, reduce PDCP and RRC Signalling exchange.It is thus possible to improve TeNB issues the promptness of UE data during switching, handover delay is reduced, improves Consumer's Experience.

Description

Base station switch method and system
Technical field
The present invention relates to mobile communication technology field, more particularly to a kind of base station switch method and system.
Background technology
The overall development trend of mobile Internet will be merged into each other with internet, in service layer, mobile Internet Experienced with conventional internet in content and application and tend to consistent development, but mobile network product speed to introduce is faster in traditional mutual Networking, in network service aspect, relative to fixed internet, also begin to provide cheap and more quick online pattern.
For example LTE (Long Term Evolution) is a kind of channel radio designed exclusively for the high broadband application of movement Beacon is accurate.By introducing OFDM, multiple antennas MIMO, 64QAM, full IP flat network structure, the frame structure of optimization, simplification The new technology such as LTE states and Inter-Cell Interference Coordination, realize higher bandwidth, bigger capacity, higher data transfer The effect of speed and lower propagation delay time.
LTE realizes the switching between different frequency range and between each system using fast hard handoff method, so as to preferably real Existing region covering and seamless switching, and realize compatible with existing 3GPP and non-3 gpp.Soft handover due to equipment complexity is high, Timing difficulty is big, can bring the demand of higher position reason ability, thus is not used.Also there occurs change accordingly for the design of core net Become, add System Architecture Evolution and 3GPP modules, realize the compatible of LTE system and 3GPP and non-3 GPP system switching.
In the communication system of reality, when a handover occurs, user equipment (User Equipment, UE) is from source base station (Source eNB, SeNB) is switched to target BS (Target eNB, TeNB).Need packet data convergence protocol (Packet Data Convergence Protocol, PDCP) and radio resource control layer (Radio Resource Control, rrc layer) between interaction signaling, carry out whether analysis judgment is successfully accessed by RRC, then tell PDCP layers, PDCP layers The transmission of up-downgoing data is carried out again.Due to the complexity and communication link of PDCP and RRC Signalling exchange, and communication mechanism Uncertainty lead to not judge whether UE has already accessed to TeNB in time, so as to can not in time to UE send downlink data, Handover delay is added, have impact on Consumer's Experience.Therefore, when a reliable method for judging whether UE accesses switches to reducing Delay and to will be most important to the service quality of whole communication system.
The content of the invention
Based on this, it is necessary to which target BS can not detect the problem of whether UE accesses in time during for switching, there is provided one Kind base station switch method and system.
A kind of base station switch method, including：
User equipment switches from source base station to target BS；
Whether the Signaling Radio Bearer for judging the user equipment in the packet data convergence protocol of target BS receives First upstream message, if so, then judging that the user equipment is successfully accessed target BS；
The target BS is transmitted up-downgoing data with the user equipment；
The packet data convergence protocol in target BS judge the user equipment Signaling Radio Bearer whether First upstream message step is received, including：
The label and Signaling Radio Bearer of the Signaling Radio Bearer of the target BS acquisition user equipment are up The sequence number of the Packet Data Unit of packet data convergence protocol；
The target BS judges whether the label of Signaling Radio Bearer is 1, and Signaling Radio Bearer upstream packet number Whether the sequence number according to the Packet Data Unit of convergence protocol is 0.
A kind of base station switching system, including：
Handover module, the operation switched for performing user equipment from source base station to target BS；
Judge module, for judging that the signaling of the user equipment is wireless in the packet data convergence protocol of target BS Whether carrying receives first upstream message, if so, then judging that the user equipment is successfully accessed target BS；
Transport module, the operation of up-downgoing data is transmitted with the user equipment for performing the target BS；
The judge module includes：
Acquisition module, for perform the target BS obtain the user equipment Signaling Radio Bearer label and The operation of the sequence number of the Packet Data Unit of Signaling Radio Bearer ascending packet data convergence protocol；
Sub- judge module, whether the label that Signaling Radio Bearer is judged for performing the target BS is 1, and signaling The sequence number of the Packet Data Unit of radio bearer ascending packet data convergence protocol whether the operation for being 0.
Above-mentioned base station switch method and system, when user equipment switches from source base station to target BS, by target The packet data convergence protocol of base station judges whether the Signaling Radio Bearer of the user equipment receives first upstream message, So as to realize the judgement that target BS whether is accessed to user equipment.Using wireless by the signaling for switching UE in PDCP physical layers Carrying uplink receiving to first upstream message judge mode that whether UE accesses, UE can be judged in time whether It is successfully accessed.Meanwhile judge because being realized in PDCP, therefore, reduce PDCP and RRC Signalling exchange.Therefore, Ke Yiti TeNB issues the promptness of UE data during height switching, reduces handover delay, improves Consumer's Experience.
Brief description of the drawings
Fig. 1 is the applied environment figure of base station switch method in one embodiment；
Fig. 2 is the schematic flow sheet of base station switch method embodiment one of the present invention；
Fig. 3 is the schematic flow sheet of base station switch method embodiment two of the present invention；
Fig. 4 is the structural representation of switching system embodiment in base station of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment and accompanying drawing, but embodiments of the present invention are not limited to This.
The base station switch method that the embodiment of the present invention is provided can be applied in system as shown in Figure 1, refer to Fig. 1 institutes Show, Fig. 1 a are connection diagram before switching, and UE110 is connected with SeNB120, and SeNB120 is connected with TeNB130.Fig. 1 b are switching Connection diagram afterwards, UE110 are connected with TeNB130, and SeNB120 is connected with TeNB130.UE110 can be such as smart mobile phone, The equipment such as tablet personal computer, personal digital assistant, but be not limited thereto.
In addition, the bilingual difference of following embodiment is as follows：
Signaling Radio Bearer (Signalling Radio Bearers, SRB).The Signaling Radio Bearer that numbering is 1 can be with Represented with SRB1 (Signalling Radio Bearer one).Packet Data Unit sequence number (Sequence Number, SN).Packet Data Unit (Packet Data Unit, PDU).Data Radio Bearer (Data Radio Bearers, DRB). Radio link control layer (Radio Link Control, RLC).Affirmation mode (Acknowledged Mode, AM).
As shown in Fig. 2 be the schematic flow sheet of base station switch method embodiment one of the present invention, including：
Step S201：UE switches from SeNB to TeNB；
Step S202：Judge whether the SRB of the UE receives first upstream message in TeNB PDCP, if so, then sentencing The fixed UE is successfully accessed TeNB；In addition, if it is not, then continue waiting for UE accesses.
Step S203：The TeNB and UE is transmitted up-downgoing data.
The switching that the present embodiment can be used between LTE micro-base stations.Step S202 is one and judges whether UE is successfully accessed Judgment step.When UE switches from SeNB to TeNB, by judging whether the SRB of the UE receives first in TeNB PDCP Bar upstream message, so as to realize the judgement that TeNB whether is accessed to UE.Using up by the SRB for switching UE in PDCP physical layers First upstream message received judges mode that whether UE accesses, can judge whether UE has successfully connect in time Enter.Meanwhile judge because being realized in PDCP, therefore, PDCP and RRC Signalling exchange are avoided, without that will believe in PDCP layers Order, which is sent to rrc layer, to be judged, and returns to PDCP layers.It is thus possible to improve TeNB issues the promptness of UE data, drop during switching Low switching time delay, improve Consumer's Experience.
In one of the embodiments, the PDCP in TeNB judge the SRB of the UE whether receive first it is up Messages step, including：
The TeNB obtains the SRB label and the up PDCP of SRB SN of the UE；
The TeNB judges whether SRB label is 1, and whether the up PDCP of SRB SN is 0.
How the present embodiment judges whether to receive first upstream message if further defining.Obtain the SRB of the UE Label and the up PDCP of SRB SN be the SRB types and up PDCP PDU of SRB for determining current switching UE SN, work as SRB Type be SRB1 and the up PDCP PDU received of SRB1 SN is 0, due to SRB1 carryings to be that UE accesses to RRC related Information, PDCP SN show that this is first upstream message that UE is sent for 0, at this moment show that UE has been accessed.At this moment UE accesses It is probably the access after the completion of reconfiguring, it is also possible to the access after the completion of re-establishing.Otherwise, if SRB type not For SRB1, then continue waiting for, until SRB type is SRB1 and the up PDCP PDU received of SRB1 SN is 0.
Because the present embodiment uses whether current switching UE SRB types and the up PDCP PUD of SRB SN detections UE connect The method entered, solve the problems, such as due to that can not judge whether UE has already accessed to TeNB caused by switching.Reduce simultaneously PDCP and RRC Signalling exchange.Therefore, time delay is significantly reduced, improves Consumer's Experience.
In one of the embodiments, the TeNB and UE is transmitted before up-downgoing data step, in addition to：
The TeNB detects the RLC patterns of the UE DRB；
When RLC patterns are AM, whether detection PDCP receives the PDCP of rrc layer configuration serial-number-state information, if It is that then the TeNB transmits up-downgoing data according to the serial-number-state information to the UE.
The present embodiment is that current switching UE DRB RLC pattern is judged, determines whether AM patterns.If AM patterns, then detect the serial-number-state information whether PDCP receives the PDCP of rrc layer configuration.Generally, sequence number Status information can be configured before UE accesses, can directly acquire serial-number-state information, then TeNB is according to sequence Number status information transmits up-downgoing data to the UE.If not acquiring serial-number-state information, need to wait until PDCP The state report of rrc layer configuration is received, just can send up-downgoing data to UE.Which number can be distinguished according to state report According to being that SeNB has been transmitted across, so as to determine which data needs to send.
In one of the embodiments, the TeNB and UE is transmitted before up-downgoing data step, in addition to：
The TeNB detects the RLC patterns of the UE Data Radio Bearer；
When RLC patterns are Unacknowledged Mode, the TeNB transmits up-downgoing data to the UE.
The present embodiment is that the RLC of Data Radio Bearer pattern is judged, determines whether AM patterns.If not AM patterns, then it can immediately begin to send up-downgoing data to UE.
Further, the UE is from SeNB to TeNB switch steps, including：
SeNB sends handover request to TeNB；
The TeNB receives the handover request that SeNB is sent, and establishes Signaling Radio Bearer link, and send and ask to SeNB Confirm instruction, wherein, the request confirms that instruction includes establishing the configuration information of Signaling Radio Bearer link；
The request is confirmed that UE is issued in instruction by the SeNB；
The UE confirms that Signaling Radio Bearer link is established in instruction according to the request.
Various technical characteristics in embodiment of above can be arbitrarily combined, as long as the combination between feature is not present Conflict or contradiction, but as space is limited, do not described one by one, therefore the various technical characteristics in above-mentioned embodiment is any It is combined the scope for falling within this disclosure.
The present invention lifts one of which combination and illustrated, as shown in figure 3, being base station switch method embodiment two of the present invention Schematic flow sheet.
Step S301：When UE switches from SeNB to TeNB, detect current switching UE SRB types and SRB is up receives PDCP PDU SN；
Step S302：Show whether SRB types are SRB1 according to step S301 testing result, and the up PDCP of SRB1 Whether PDU SN is 0；
Step S303：If currently switching UE SRB types are SRB1, and the up PDCP PDU of SRB1 SN is 0, due to What SRB1 was carried is the relevant information of UE and RRC accesses, and PDCP SN show that this is first upstream message that UE is sent for 0, this When show that UE has been accessed.At this moment UE accesses are probably the access after the completion of reconfiguring, it is also possible to are completed re-establishing Access afterwards.Otherwise, continue waiting for, until SRB type is SRB1 and the up PDCP PDU received of SRB1 SN is 0；
Step S304：After it is determined that UE has already accessed to TeNB, TeNB is detected and is determined current switching UE DRB RLC Whether pattern is AM patterns；
Step S305：If it is AM patterns to detect RLC patterns, because the message of AM patterns needs to configure SN.Therefore, After PDCP receives the PDCP SN status of rrc layer configuration, TeNB can be sent according to the serial-number-state information to UE Up-downgoing data；
Step S306：If it is not AM patterns to detect RLC patterns, TeNB can immediately begin to send line number up and down According to.
During due to switching, easily cause TeNB can not understand whether UE accesses, and the present invention program uses basis currently to cut Change UE SRB types and SRB uplink receivings to PDCP PDU SN judge method that whether UE be linked into TeNB, reduce and cut The phenomenon whether UE accesses can not be detected during changing, therefore, effectively inhibit that data in handoff procedure send it is high when extend to Data outage, improve the service quality of user.
According to above-mentioned base station switch method, the present invention also provides a kind of base station switching system, as shown in figure 4, being the present invention The structural representation of base station switching system embodiment, including：
Handover module 410, the operation switched for performing UE from SeNB to TeNB；
Whether judge module 420, the SRB for judging the UE in TeNB PDCP receive first upstream message, if It is then to judge that the UE is successfully accessed TeNB；
Transport module 430, the operation of up-downgoing data is transmitted for performing the TeNB and UE.
In one of the embodiments, the judge module includes：
Acquisition module, for perform the TeNB obtain the UE SRB label and the up PDCP of SRB SN behaviour Make；
Sub- judge module, whether the label that SRB is judged for performing the TeNB is 1, and the up PDCP of SRB SN is It is no be 0 operation.
In one of the embodiments, the transport module is used for：
If the UE is successfully accessed TeNB, the TeNB detects the RLC patterns of the UE Data Radio Bearer；When RLC moulds When formula is affirmation mode, whether detection PDCP receives the PDCP of rrc layer configuration serial-number-state information, if so, then described TeNB transmits up-downgoing data according to the serial-number-state information to the UE.
In one of the embodiments, the transport module is used for：
If the UE is successfully accessed TeNB, the TeNB detects the RLC patterns of the UE Data Radio Bearer；When RLC moulds When formula is Unacknowledged Mode, the TeNB transmits up-downgoing data to the UE.
In one of the embodiments, the handover module is further used for performing following operation：
SeNB sends handover request to TeNB；
The TeNB receives the handover request that SeNB is sent, and establishes Signaling Radio Bearer link, and send and ask to SeNB Confirm instruction, wherein, the request confirms that instruction includes establishing the configuration information of Signaling Radio Bearer link；
The request is confirmed that UE is issued in instruction by the SeNB；
The UE confirms that Signaling Radio Bearer link is established in instruction according to the request
The base station switch method of the base station switching system of the present invention and the present invention is one-to-one, above-mentioned base station switching side Correlation technique feature and its technique effect in method embodiment are no longer superfluous herein suitable for the switching system embodiment of base station State.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (8)

  1. A kind of 1. base station switch method, it is characterised in that including：
    User equipment switches from source base station to target BS；
    Whether the Signaling Radio Bearer for judging the user equipment in the packet data convergence protocol of target BS receives first Bar upstream message, if so, then judging that the user equipment is successfully accessed target BS；
    The target BS is transmitted up-downgoing data with the user equipment；
    The packet data convergence protocol in target BS judges whether the Signaling Radio Bearer of the user equipment receives First upstream message step, including：
    The target BS obtains the label and Signaling Radio Bearer upstream packet of the Signaling Radio Bearer of the user equipment The sequence number of the Packet Data Unit of convergence protocol layer；
    The target BS judges whether the label of Signaling Radio Bearer is 1, and Signaling Radio Bearer ascending packet data converges Whether the sequence number of the Packet Data Unit of poly- protocol layer is 0.
  2. 2. base station switch method according to claim 1, it is characterised in that the target BS enters with the user equipment Before row transmission up-downgoing data step, in addition to：
    The target BS detects the radio link control layer model of the customer equipment data radio bearer；
    When radio link control layer model is affirmation mode, whether detection packet data convergence protocol receives wirelessly The serial-number-state information of the packet data convergence protocol of Resource Control protocols layer configuration, if so, the then target BS root According to the serial-number-state information to the user device transmissions up-downgoing data.
  3. 3. base station switch method according to claim 1, it is characterised in that the target BS enters with the user equipment Before row transmission up-downgoing data step, in addition to：
    The target BS detects the radio link control layer model of the customer equipment data radio bearer；
    When radio link control layer model is Unacknowledged Mode, the target BS is to above and below the user device transmissions Row data.
  4. 4. according to the base station switch method described in claims 1 to 3 any one, it is characterised in that the user equipment is from source Base station to target BS switch step, including：
    Source base station sends handover request to target BS；
    The target BS receives the handover request that source base station is sent, and establishes Signaling Radio Bearer link, and send to source base station Request confirms instruction, wherein, the request confirms that instruction includes establishing the configuration information of Signaling Radio Bearer link；
    The request is confirmed that user equipment is issued in instruction by the source base station；
    The user equipment confirms that Signaling Radio Bearer link is established in instruction according to the request.
  5. A kind of 5. base station switching system, it is characterised in that including：
    Handover module, the operation switched for performing user equipment from source base station to target BS；
    Judge module, for judging the Signaling Radio Bearer of the user equipment in the packet data convergence protocol of target BS Whether first upstream message is received, if so, then judging that the user equipment is successfully accessed target BS；
    Transport module, the operation of up-downgoing data is transmitted with the user equipment for performing the target BS；
    The judge module includes：
    Acquisition module, the label and signaling for obtaining the Signaling Radio Bearer of the user equipment for performing the target BS The operation of the sequence number of the Packet Data Unit of radio bearer ascending packet data convergence protocol；
    Sub- judge module, whether the label that Signaling Radio Bearer is judged for performing the target BS is 1, and signaling is wireless Carry ascending packet data convergence protocol Packet Data Unit sequence number whether the operation for being 0.
  6. 6. base station switching system according to claim 5, it is characterised in that the transport module is used for：
    If the user equipment is successfully accessed target BS, the target BS detects the customer equipment data radio bearer Radio link control layer model；When radio link control layer model is affirmation mode, packet data convergence is detected Whether protocol layer receives the serial-number-state information of the packet data convergence protocol of radio resource control layer configuration, if Be, then the target BS according to the serial-number-state information to the user device transmissions up-downgoing data.
  7. 7. base station switching system according to claim 5, it is characterised in that the transport module is used for：
    If the user equipment is successfully accessed target BS, the target BS detects the customer equipment data radio bearer Radio link control layer model；When radio link control layer model is Unacknowledged Mode, the target BS to The user device transmissions up-downgoing data.
  8. 8. the base station switching system according to claim 5 to 7 any one, it is characterised in that the handover module enters one Walk for performing following operation：
    Source base station sends handover request to target BS；
    The target BS receives the handover request that source base station is sent, and establishes Signaling Radio Bearer link, and send to source base station Request confirms instruction, wherein, the request confirms that instruction includes establishing the configuration information of Signaling Radio Bearer link；
    The request is confirmed that user equipment is issued in instruction by the source base station；
    The user equipment confirms that Signaling Radio Bearer link is established in instruction according to the request.
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CN108810982B (en) * 2017-05-05 2021-09-07 捷开通讯(深圳)有限公司 Communication method, base station, user equipment and device with storage function
CN109757130B (en) * 2017-09-08 2020-06-23 Oppo广东移动通信有限公司 Method for configuring packet data convergence protocol PDCP, terminal equipment and network equipment

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CN101400156A (en) * 2007-09-29 2009-04-01 华为技术有限公司 Downlink and uplink data packet forwarding method based on S1 switching
CN103313325A (en) * 2012-03-09 2013-09-18 中兴通讯股份有限公司 Switching method and device and data processing method and device

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Publication number Priority date Publication date Assignee Title
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CN101400156A (en) * 2007-09-29 2009-04-01 华为技术有限公司 Downlink and uplink data packet forwarding method based on S1 switching
CN103313325A (en) * 2012-03-09 2013-09-18 中兴通讯股份有限公司 Switching method and device and data processing method and device

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Address after: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province

Patentee after: Jingxin Network System Co.,Ltd.

Address before: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province

Patentee before: Comba Telecom System (China) Ltd.