CN100505611C - Method for increasing side resource using rate of wideband CDMA network base station - Google Patents
Method for increasing side resource using rate of wideband CDMA network base station Download PDFInfo
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- CN100505611C CN100505611C CNB2005100665843A CN200510066584A CN100505611C CN 100505611 C CN100505611 C CN 100505611C CN B2005100665843 A CNB2005100665843 A CN B2005100665843A CN 200510066584 A CN200510066584 A CN 200510066584A CN 100505611 C CN100505611 C CN 100505611C
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Abstract
The method comprises: the attempting retransmission parameter message allowed in data retransmission process is set in hybrid automatic repeat request (HARQ) function of base station; when the base station retransmits data, in term of actual attempting retransmission parameter message and the allowed attempting retransmission parameter message it makes process for the retransmitted data. The invention can avoid the resources not capable of releasing due to the resources at base station side occupied by the retransmission data.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to a kind of method that improves wideband CDMA network base station side resource utilization.
Background technology
3GPP (third generation partner program) is a consortium of being made up of the telecommunication standard department from China, Japan, Korea S, US and European.Comprise the whole world more than 200 tame wireless manufacturer and operators, 3GPP will formulate most 3G (3G (Third Generation) Moblie) technical stipulation.China Wireless Telecommunication Standar group (CWTS) has added 3GPP in 1999.The target of 3GPP is to realize being seamlessly transitted to 3G network by 2G (second generation mobile communication) network, guarantees the backwards compatibility of WeiLai Technology, supports roaming and compatibility between light networking and system.
3GPP WCDMA (Wideband Code Division Multiple Access (WCDMA)) standard is gone through effort for many years, existing at present R99, and R4, three versions of R5 are finished final version, and wherein up-to-date R5 version was finished in June, 2002.Adopted traditional ARQ (automatic repeat request) method in the R99/R4 of WCDMA version, data retransmission function realizes at RLC (Radio Link control) layer.Totally three kinds of the transmission modes of rlc layer: AM (answer-mode), UM (unacknowledged mode) and TM (transparent mode), have only the rlc layer of working as to be in the AM transmission mode, and when UE (subscriber equipment) side rlc layer is confirmed correctly not receive data, just can cause UE side rlc layer to initiate the data re-transmission request.Because signaling and data need be transmitted between L1 (physical layer), L2 (data link layer), L3 (network layer), therefore, UE side rlc layer is from confirming that the incorrect data that receive are to initiating to need big time delays the data re-transmission request.
HSDPA (high speed downlink packet access) is a kind of modulation agreement that 3GPP proposes in order to satisfy the asymmetric demand of up-downgoing data service in WCDMA R5, this agreement is to improve a kind of important technology of downlink capacity and data service rate in the WCDMA networking later stage, it can bring up to 10Mbps to downstream data traffic speed under the situation that does not change existing WCDMA network configuration.
The MAC layer is made up of three logic entity: MAC-b, MAC-c/sh and MAC-d, and the HSDPA agreement is supported two kinds of possible MAC (medium access control) layer structure:
1, comprise MAC-c/sh in the MAC layer, the HSDPA protocol architecture that comprises MAC-c/sh as shown in Figure 1.In this HSDPA protocol architecture, the MAC-hs of NodeB (base station) (control of shared medium high speed access) functional entity is below the MAC-c/sh of CRNC (controller of control wireless network), and MAC-c/sh provides the correlation function of HSDPA.HS-DSCH FP (Frame Protocol) handles and transmits from SRNC (service radio network controller) to the data CRNC and CRNC and the NodeB.
2, do not comprise MAC-c/sh in the MAC layer, the HSDPA protocol architecture that does not comprise MAC-c/sh as shown in Figure 2.In this HSDPA protocol architecture, the MAC-hs of NodeB is directly relevant with SRNC, does not comprise any content relevant with HSDPA among the CRNC, and the user of SRNC directly links NodeB.
The HSDPA agreement has increased HARQ (mix automatically and retransmit) function in the NodeB side, and HARQ is a kind of error correcting technique, and it combines the characteristics of FEC (forward error correction) and two kinds of technology of ARQ (re-transmission).The HARQ technology retransmits the NodeB side data by MAC-hs and at first is controlled at L1, has only under the situation of L1 re-transmission failure, and the HSDPA data just can not be identified incorrect the reception at the rlc layer of UE side, and at this moment the UE side just can be initiated the rlc layer repeat requests.The HARQ technology can improve transmission rate and reduce time delay, has also kept original RLC retransmission mechanism simultaneously.
In the HARQ of prior art function, be provided with maximum retransmission, have only the HSDPA data of working as to reach maximum retransmission at the L1 number of retransmissions, and under the situation that data re-transmission is still failed, just think the L1 data transmission fails, the HSDPA data just are dropped, and the NodeB side resource that these data are occupied just is released.
The shortcoming of the HARQ function of prior art is: when the resource of HSDPA data re-transmission can't meet the demands, the HSDPA data also just can't retransmit, therefore, the HSDPA data also just can't arrive maximum retransmission at the L1 number of retransmissions, the NodeB side resource that these data and these data are occupied also just can't be released, the NodeB side resource that can cause these data and these data to occupy under extreme case can't be released forever, has caused NodeB side resource to waste greatly.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method that improves wideband CDMA network base station side resource utilization, thereby avoided effectively in the prior art because the resource of data re-transmission can't meet the demands, cause the NodeB side resource that data and these data occupy can't d/d shortcoming, improved NodeB side resource utilization in the WCDMA network effectively.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method that improves wideband CDMA network base station side resource utilization comprises:
A, the mixing in the base station retransmit in the HARQ function automatically, are arranged on the trial that allows in the data retransmission process and retransmit parameter information, and it is maximum number of retransmissions or the largest buffered timing length attempted that described trial retransmits parameter information;
B, when the base station side data retransmission, trial according to reality retransmits parameter information, and the trial of described permission retransmits parameter information and treats the data of re-transmission and handle, when the trial number of retransmissions of described data is attempted number of retransmissions more than or equal to described maximum, and described data discharge the base station side resource that described data and described data are occupied when user equipment side takes defeat; Or arrive the largest buffered timing length when the largest buffered timer of described data retransmission, and described data discharge the base station side resource that described data and described data are occupied when user equipment side takes defeat.
Described maximum maximum retransmission of attempting number of retransmissions greater than these data of stipulating in the HARQ function.
When described trial re-transmission parameter information was maximum trial number of retransmissions, described step B further comprised:
B1, take defeat in user equipment side when data, prepare when base station side is retransferred, then the trial number of retransmissions with these data adds 1.
Described step B also comprises:
After data were sent out for the first time, just the trial number of retransmissions of these data was set to 0.
Described step B also comprises:
When the trial number of retransmissions of described data is maximumly attempted number of retransmissions less than described, and these data are when user equipment side takes defeat, then execution in step B1.
When described trial re-transmission parameter information was the largest buffered timing length, described step B further comprised:
B2, prepare when base station side is retransferred, to start the largest buffered timer of described data retransmission when data.
Described method is applicable to the R5 version of WCDMA network.
As seen from the above technical solution provided by the invention, the present invention compares with prior art, is provided with the trial number of retransmissions parameter and the maximum number of retransmissions of attempting of data in the HARQ of Nodeb function.The present invention has overcome in the prior art and can't arrive under the situation of maximum retransmission at the L1 number of retransmissions when the HSDPA data, the shared NodeB side resource of HSDPA data and these data can't d/d shortcoming, improve NodeB side resource utilization in the WCDMA network effectively, improved the performance of WCDMA network.
Description of drawings
Fig. 1 is the HSDPA protocol architecture figure that comprises MAC-c/sh;
Fig. 2 is not for comprising the HSDPA protocol architecture figure of MAC-c/sh;
Fig. 3 is the concrete process chart of the method for the invention.
Embodiment
The invention provides a kind of method that improves wideband CDMA network base station side resource utilization, core of the present invention is: in the HARQ of Nodeb function, be provided with the trial number of retransmissions parameter and the maximum trial number of retransmissions of data, and the maximum data maximum retransmission of attempting number of retransmissions greater than defined in the existing HARQ function of set data.Then, utilize judgement trial number of retransmissions whether to reach the maximum resource that number of retransmissions need to judge whether the shared NodeB side of release data and these data of attempting.
Describe the present invention in detail below in conjunction with accompanying drawing, the concrete handling process of the method for the invention comprises the steps: as shown in Figure 3
Step 3-1: trial number of retransmissions parameter and maximum thereof that data are set in the HARQ function.
The present invention at first is provided with the maximum of data and attempts the number of retransmissions parameter in the HARQ function of the MAC-hs of Nodeb functional entity, and the maximum that this parameter is set promptly: the maximum number of retransmissions of attempting must guarantee that maximum trial number of retransmissions is greater than the maximum retransmission that has the data that are provided with in the HARQ function now simultaneously.
Step 3-2: the trial number of retransmissions of these data was set to 0 after data sent.
After the HSDPA data were sent out for the first time, just the trial number of retransmissions of these data was set to 0.
Step 3-3: the trial number of retransmissions with these data when data are prepared to resend adds 1.
Receive failure when the HSDPA data at the UE side joint, the HSDPA data are prepared when the L1 of NodeB side retransfers, and no matter at this moment whether the resource of data re-transmission can meet the demands, and all the trial number of retransmissions with these data adds 1.
Step 3-4: attempt number of retransmissions and compare with the maximum number of retransmissions of attempting.
When the HSDPA data are prepared to retransfer at the L1 of NodeB side, and after the trial number of retransmissions of these data adds 1, just trial number of retransmissions and the maximum number of retransmissions of attempting with these data compares, and judges whether the trial number of retransmissions of these data reaches the maximum number of retransmissions of attempting.
If the trial number of retransmissions of these data is attempted number of retransmissions more than or equal to maximum, and these data take defeat in user equipment side, then execution in step 3-5;
If the trial number of retransmissions of these data is attempted number of retransmissions less than maximum, and these data take defeat in user equipment side, then re-execute step 3-3.
Step 3-5: discharge these data and take the resource of NodeB side.
If the trial number of retransmissions of these data is attempted number of retransmissions more than or equal to maximum, because the maximum number of retransmissions of attempting is greater than maximum retransmission, the maximum retransmission of the trial number of retransmissions of these data greater than these data then is described, therefore, need abandon this blocks of data this moment, discharges the shared NodeB side resource of these data.
The invention allows for another replacement scheme.Largest buffered timer of data setting to the needs re-transmission, after data are retransmitted for the first time, start this largest buffered timer, when the timing of this timer arrives, if data are not still correctly received in the UE side, just abandon this blocks of data, discharge the NodeB side resource that these data are occupied.
In sum, utilize the method for the invention, can overcome effectively because the resource of data re-transmission can't meet the demands, cause these data and and these data NodeB side resource of occupying can't d/d problem.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1, a kind of method that improves wideband CDMA network base station side resource utilization is characterized in that, comprising:
A, the mixing in the base station retransmit in the HARQ function automatically, are arranged on the trial that allows in the data retransmission process and retransmit parameter information, and it is maximum number of retransmissions or the largest buffered timing length attempted that described trial retransmits parameter information;
B, when the base station side data retransmission, trial according to reality retransmits parameter information, and the trial of described permission retransmits parameter information and treats the data of re-transmission and handle, when the trial number of retransmissions of described data is attempted number of retransmissions more than or equal to described maximum, and described data discharge the base station side resource that described data and described data are occupied when user equipment side takes defeat; Or arrive the largest buffered timing length when the largest buffered timer of described data retransmission, and described data discharge the base station side resource that described data and described data are occupied when user equipment side takes defeat.
2, according to the method for the described raising wideband CDMA network base station of claim 1 side resource utilization, it is characterized in that described maximum maximum retransmission of attempting number of retransmissions greater than these data of stipulating in the HARQ function.
According to the method for claim 1 or 2 described raising wideband CDMA network base station side resource utilizations, it is characterized in that 3, when described trial re-transmission parameter information was maximum trial number of retransmissions, described step B further comprised:
B1, take defeat in user equipment side when data, prepare when base station side is retransferred, then the trial number of retransmissions with these data adds 1.
4, according to the method for the described raising wideband CDMA network base station of claim 3 side resource utilization, it is characterized in that described step B also comprises:
After data were sent out for the first time, just the trial number of retransmissions of these data was set to 0.
5, according to the method for the described raising wideband CDMA network base station of claim 4 side resource utilization, it is characterized in that described step B also comprises:
When the trial number of retransmissions of described data is maximumly attempted number of retransmissions less than described, and these data are when user equipment side takes defeat, then execution in step B1.
According to the method for the described raising wideband CDMA network base station of claim 1 side resource utilization, it is characterized in that 6, when described trial re-transmission parameter information was the largest buffered timing length, described step B further comprised:
B2, prepare when base station side is retransferred, to start the largest buffered timer of described data retransmission when data.
7, according to the method for claim 1,2 or 6 described raising wideband CDMA network base station side resource utilizations, it is characterized in that described method is applicable to the R5 version of WCDMA network.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100665843A CN100505611C (en) | 2005-04-28 | 2005-04-28 | Method for increasing side resource using rate of wideband CDMA network base station |
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| CNB2005100665843A CN100505611C (en) | 2005-04-28 | 2005-04-28 | Method for increasing side resource using rate of wideband CDMA network base station |
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| CN1855801A CN1855801A (en) | 2006-11-01 |
| CN100505611C true CN100505611C (en) | 2009-06-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101414899B (en) * | 2007-10-15 | 2011-11-02 | 华为技术有限公司 | Method, system and apparatus for configuring HARQ parameter |
| US8527829B2 (en) | 2008-04-21 | 2013-09-03 | Apple Inc. | Methods and systems for HARQ protocols |
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