CN101610541B - Method and device for transmitting RLC information in HSDPA system - Google Patents
Method and device for transmitting RLC information in HSDPA system Download PDFInfo
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Abstract
The invention discloses a method for transmitting RLC information in an HSDPA system. The method comprises the following steps: continuously receiving downlink encapsulation data in a media access control sublayer (MAC-hs) verification mode to acquire a data head marker bit of the downlink encapsulation data; according to the data head marker bit, judging whether the corresponding downlink encapsulation data contains an RLC control protocol data unit or a downlink service data packet and respectively caching the RLC control protocol data unit and the downlink service data packet; during each transmission time interval (TTI), respectively acquiring user equipment (UE) priority corresponding to the information of the RLC control protocol data unit and UE priority corresponding to the information of the downlink service data packet and carrying out ordering respectively; and preferentially carrying out ordering and scheduling of the information of the RLC control protocol data unit according to the UE priority corresponding to the information of the RLC control protocol data unit. By carrying out preferential processing of the information of the RLC control protocol data unit, the method reduces the influence on uplink service caused by caching delay of the information of the downlink RLC control protocol data unit, thereby reducing cutting off rate and improving and optimizing the performance of the HSDPA system.
Description
Technical field
The present invention relates to high speed downlink packet and insert (HSDPA, High Speed Downlink PacketAccess) information transmission technology in the system, be particularly related to the method and the device of transmission Radio Link control (RLC, Radio Link Control) information in the HSDPA system.
Background technology
In the HSDPA system,, improved the network high-speed downlink message transmission rate by adopting the HSDPA technology of supporting the asymmetric data, services of high speed.Descending transmission channel in the HSDPA system is high speed descending sharing channel (HS-DSCH, High Speed Downlink Shared Channel), be used for the bearing downlink data, comprise downlink service data and RLC information, be RLC control protocol data cell (RLC Control PDU, RLC Control Protocol Data Unit) information, HS-DSCH corresponding physical channel is High-Speed Physical Downlink Shared Channel (HS-PDSCH, High Speed PhysicalDownlink Channel), at each Transmission Time Interval (TTI, Transmission TimingInterval), base station (Node B) is according to each subscriber equipment (UE, User Equipment) situation gives one or more UE with transmitting downlink data the HS-DSCH resource allocation.
For realizing configuration, distribution and the management of HS-DSCH downlink data transmission and HSDPA related physical channel, in the HSDPA system, introduced a new functional entity-medium access control (MAC, Medium Access Control) sublayer (MAC-hs), to handle the relevant media access control sublayer operation of HS-DSCH, for example, the buffer memory downlink transmission data, at each TTI, according to the dispatching algorithm that is provided with, calculate UE priority and to UE dispatch, with the operations such as downlink transmission data of scheduling buffer memory.
As seen by above-mentioned, the introducing of descending MAC-hs buffer memory has produced certain time delay to the downlink data transmission that is carried on the HS-DSCH.For example, at affirmation mode (AM, Acknowledge Mode) under, RLC control protocol data unit information (comprising the uplink service state report information) need transmit by HS-PDSCH, because existing data in buffer is to dispatch according to UE priority, handle, therefore, if this UE priority is lower, then this UE is dispatched to the back in the formation, do not consider that RLC control protocol data unit information is to the sensitiveness of propagation delay time in this UE, for instance, if RLC control protocol data unit information is long at the MAC-hs buffer memory, it is untimely to cause this UE to receive RLC control protocol data unit information (comprising the uplink service state report information), thereby influence the transmission of uplink service, abominable scene if the uplink service state report information that this UE receives is untimely, will cause uplink service to reset even call drop.
Summary of the invention
In view of this, the invention provides the method for transmitting RLC information in the HSDPA system, can reduce the time delay of RLC message transmission, reduce uplink service and reset and cutting off rate.
The present invention also provides the device of transmitting RLC information in the HSDPA system, can reduce the time delay of RLC message transmission, reduces uplink service and resets and cutting off rate.
RLC transmission of Information method in the HSDPA provided by the invention system comprises:
Under Media Access Control MAC-hs affirmation mode, receive descending encapsulation of data continuously, and obtain the data head flag bit of each descending encapsulation of data;
MAC-hs judges that according to the data head flag bit that obtains comprising RLC control protocol data cell in the corresponding descending encapsulation of data still is the downlink service data bag;
RLC control protocol data unit information and downlink service data package informatin in each the descending encapsulation of data that receives are continuously carried out buffer memory respectively;
At each Transmission Time Interval TTI, the UE priority and the ordering of obtaining the user equipment (UE) priority and the ordering of described RLC control protocol data unit information correspondence respectively and obtaining described downlink service data package informatin correspondence are preferentially dispatched described RLC control protocol data unit information according to the UE prioritization of described RLC control protocol data unit information correspondence then.
Described RLC control protocol data unit information is buffered in control UE sequencing queue, described downlink service data package informatin is buffered in downlink service data UE sequencing queue.
Described control UE sequencing queue is in MAC-hs buffer queue front portion, and described downlink service data UE sequencing queue is at MAC-hs buffer queue afterbody.
The user equipment (UE) priority and the ordering of obtaining described RLC control protocol data unit information correspondence comprise:
Whether the UE that judges the RLC control protocol data unit information correspondence of buffer memory in the described control UE sequencing queue unit is one, if described UE priority is the highest; If greater than one, the UE priority of calculating the described RLC control protocol data unit information correspondence of buffer memory according to the default dispatching algorithm line ordering of going forward side by side.
Described default dispatching algorithm comprises: direct ratio fair scheduling algorithm PF, max carrier to interference dispatching algorithm Max C/I or Round Robin algorithm RR.
Describedly preferentially dispatch described RLC control protocol data unit information and comprise according to the UE prioritization of described RLC control protocol data unit information correspondence:
According to the UE prioritization order of described RLC control protocol data unit information correspondence, the described RLC control protocol data unit information of the corresponding buffer memory of scheduling UE;
Determine not have in the described control UE sequencing queue unit RLC control protocol data unit information of buffer memory, according to the downlink service data package informatin of the corresponding buffer memory of UE prioritization sequential scheduling UE of described downlink service data package informatin correspondence.
The device of transmission Radio Link control RLC information in a kind of high-speed downlink packet access HSDPA system, it is characterized in that, be applied under the Media Access Control MAC-hs affirmation mode, this device comprises: judging unit, control user equipment (UE) sequencing queue unit, downlink service data UE sequencing queue unit, scheduling unit, wherein
Described judging unit, be used to receive continuous descending encapsulation of data, data head flag bit according to each the descending encapsulation of data that obtains is judged, if comprise RLC control protocol data unit information in the corresponding descending encapsulation of data, described RLC control protocol data unit information is sent to described control UE sequencing queue unit, if comprise the downlink service data package informatin, described downlink service data package informatin is sent to described downlink service data UE sequencing queue unit;
Described scheduling unit, be used at each Transmission Time Interval TTI, the UE priority and the ordering of obtaining the UE priority and the ordering of described RLC control protocol data unit information correspondence respectively and obtaining described downlink service data package informatin correspondence are preferentially dispatched described RLC control protocol data unit information according to the UE prioritization of described RLC control protocol data unit information correspondence then;
Described control UE sequencing queue unit is used for according to the described RLC control protocol data unit information that sends corresponding buffer memory from the schedule information of described scheduling unit;
Described downlink service data UE sequencing queue unit is used for according to the described downlink service data package informatin that sends corresponding buffer memory from the schedule information of described scheduling unit.
As seen from the above technical solution, the method and the device of transmitting RLC information in the HSDPA provided by the invention system, the information that data head flag bit by the descending encapsulation of data that judge to receive comprises, determine that descending encapsulation of data is a RLC control protocol data unit information, or be the downlink service data package informatin, and difference buffer memory RLC control protocol data unit information and downlink service data package informatin, at each TTI, obtain the UE priority and the ordering of RLC control protocol data unit information correspondence, and the UE priority and the ordering of obtaining downlink service data package informatin correspondence, according to the RLC control protocol data unit information of the corresponding buffer memory of clooating sequence priority scheduling UE.Because the RLC control protocol data unit information that descending encapsulation of data is comprised makes a distinction, and it is carried out priority treatment, thereby can reduce descending RLC control protocol data unit information caching delay, minimizing to the influence of uplink service, and can effectively reduce cutting off rate, improve and optimized the HSDPA systematic function.
Description of drawings
Fig. 1 is the method overall procedure schematic diagram of transmitting RLC information in the HSDPA of the present invention system.
Fig. 2 is the method flow schematic diagram of transmitting RLC information in the HSDPA of the present invention system.
Fig. 3 is the apparatus structure schematic diagram of transmitting RLC information in the HSDPA of the present invention system.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is further elaborated.
In the embodiment of the invention, under the AM situation, judge according to the information that the data head flag bit of descending encapsulation of data comprises, if be defined as RLC control protocol data unit information, this RLC control protocol data unit information is buffered in MAC-hs buffer queue front portion, if be defined as the downlink service data package informatin, this downlink service data package informatin is buffered in MAC-hs buffer queue afterbody, at each TTI, according to the UE priority of dispatching algorithm computing information correspondence, according to the data message of UE priority scheduling respective cache in the MAC-hs buffer queue that obtains.
Following elder generation describes the form that relates to rlc layer encapsulation of data of the present invention.
In the embodiment of the invention, data comprise downlink service data and RLC control protocol data cell (RLC Control PDU) information, and the information that specifically comprises in the RLC control protocol data unit information can not repeat them here referring to existing relevant agreement.
Under the AM situation, rlc layer adopts independently to downlink service data and RLC control protocol data unit information that packet carries out encapsulated delivery.
Referring to table 1, table 1 is the encapsulation format of rlc layer to business datum.
Table 1
In the table 1, D/C (Data/Control) territory is business datum/RLC control protocol data cell indication, length is 1bit, Sequence Number is a sequence number, P length is 1bit, and HE length is 2bit, and E length is 1bit, Length Indicator is Length Indication, and PAD or a piggybacked STATUSPDU is filling bit or carrier state report PDU.
Referring to table 2, table 2 is the encapsulation format of rlc layer to RLC control protocol data cell.
Table 2
In table 1 and the table 2, each parameter length and implication can not repeat them here referring to existing relevant agreement.
In the above-mentioned table, bit in the D/C territory, it is the data head flag bit of descending encapsulation of data, being used to indicate the data of this encapsulation is downlink service data bag or RLC control protocol data cell, bit is that the data of 0 this encapsulation of indication are RLC control protocol data cells, and bit is that the data of 1 this encapsulation of indication are downlink service datas.
Fig. 1 is the method overall procedure schematic diagram of transmitting RLC information in the HSDPA of the present invention system.Referring to Fig. 1, this flow process comprises:
Step 101 receives descending encapsulation of data, obtains the data head flag bit of descending encapsulation of data.
In this step, receive descending encapsulation of data continuously, and obtain the data head flag bit of each descending encapsulation of data, the data head flag bit is a D/C territory flag bit.
Step 102 if be defined as RLC control protocol data unit information, is buffered in MAC-hs buffer queue front portion with this RLC control protocol data unit information.
In this step,, this downlink service data package informatin is buffered in MAC-hs buffer queue afterbody if determine to comprise the downlink service data package informatin in the corresponding descending encapsulation of data.
In the practical application, also can be at other position of MAC-hs buffer queue buffer memory RLC control protocol data unit information, as long as RLC control protocol data unit information and downlink service data package informatin in each descending encapsulation of data of continuous reception are distinguished buffer memory.
In this step, be example, comprise two kinds of situations with the UE priority of obtaining RLC control protocol data unit information correspondence:
If at each TTI, the UE of RLC control protocol data unit information correspondence has only one, and then this UE priority is the highest;
If at each TTI, the UE of RLC control protocol data unit information correspondence has two or more, then just sort according to the UE priority of the dispatching algorithm calculating RLC control protocol data unit information correspondence that sets in advance and according to the UE priority that calculates, according to clooating sequence scheduling UE, promptly the priority height order according to UE sends the RLC control protocol data unit information that the UE correspondence is buffered in MAC-hs buffer queue front portion.
Simultaneously, just sort in the UE priority of each TTI calculating downlink service data package informatin correspondence and according to the UE priority that calculates, if determining the RLC control protocol data unit information of MAC-hs buffer queue front portion all sends, according to clooating sequence scheduling UE, promptly the priority height order according to UE sends the downlink service data package informatin that the UE correspondence is buffered in MAC-hs buffer queue afterbody.
Fig. 2 is the method flow schematic diagram of transmitting RLC information in the HSDPA of the present invention system.Referring to Fig. 2, this flow process comprises:
In this step, can be that existing MAC-hs buffer queue is set to control UE sequencing queue and downlink service data UE sequencing queue, control UE sequencing queue is used for buffer memory RLC control protocol data unit information, and downlink service data UE sequencing queue is used for the buffer memory downlink service data; Also can be existing MAC-hs buffer queue not to be provided with, work as in follow-up and receive RLC control protocol data unit information, this RLC control protocol data unit information is placed the front portion of existing MAC-hs buffer queue, if the downlink service data package informatin then places this downlink service data package informatin the afterbody that has the MAC-hs buffer queue now; Can also be to reconfigure control UE sequencing queue, with existing MAC-hs buffer queue as downlink service data UE sequencing queue.
The control UE sequencing queue priority that is provided with is higher than downlink service data UE sequencing queue.
In this step, descending encapsulation of data is the encapsulation format of rlc layer to downlink data, data head flag bit according to encapsulation of data, be that D/C territory flag bit is judged, if D/C territory flag bit is 0, the downlink data of representing this encapsulation is a RLC control protocol data cell, if D/C territory flag bit is 1, the downlink data of representing this encapsulation is the downlink service data bag.
In this step, the method of calculating UE priority can adopt original dispatching algorithm, for example, direct ratio equity dispatching (PF, Proportional-Fair Scheduler), max carrier to interference (Max C/I, Maximum Carrier to Interference) dispatching algorithm, repeating query (RR, Round Robin) dispatching algorithm etc.At each HS-PDSCH TTI, abbreviate TTI as, dispatching algorithm is calculated the UE priority line ordering of going forward side by side.
In the practical application, when the UE of the RLC control protocol data unit information correspondence that is buffered in control UE sequencing queue or MAC-hs buffer queue front portion has only one, then do not need to calculate the priority of this UE.
Step 205 sorts the UE priority that calculates, according to the highest UE of queuing sequential scheduling priority.
In this step, sort, be buffered in the RLC control protocol data unit information of controlling in the UE sequencing queue according to the highest UE correspondence of queuing sequential scheduling priority according to the UE priority that calculates.
In the practical application, when the UE of the RLC of buffer memory control protocol data unit information correspondence has only one, at each HS-PDSCH TTI, directly dispatch the RLC control protocol data unit information of this UE correspondence, promptly the order according to buffer memory sends RLC control protocol data unit information.
Step 213 is buffered in downlink service data UE sequencing queue or MAC-hs buffer queue afterbody with the downlink service data package informatin that receives.
Step 214 is calculated the UE priority of this downlink service data package informatin correspondence.
In this step, it is similar to calculate UE priority and step 214, does not repeat them here.
Step 215 with the UE prioritization that calculates, is determined not have RLC control protocol data unit information in the control UE sequencing queue, according to the highest UE of queuing sequential scheduling priority.
If have RLC control protocol data unit information in the control UE sequencing queue, show the RLC control protocol data unit information that also needs UE correspondence in priority scheduling control UE sequencing queue, the prioritised transmission sequencing queue, if there has not been the RLC control protocol data unit information of buffer memory in the control UE sequencing queue, show that needing the RLC of prioritised transmission control protocol data unit information to dispatch disposes, thereby according to the downlink service data of the queuing sequential scheduling UE correspondence in downlink service data UE sequencing queue or the MAC-hs buffer queue afterbody.
So far, this flow process finishes.
Fig. 3 is the apparatus structure schematic diagram of transmitting RLC information in the HSDPA of the present invention system.Referring to Fig. 3, this device comprises judging unit, control UE sequencing queue unit, downlink service data UE sequencing queue unit, scheduling unit, wherein,
Judging unit, be used to receive continuous descending encapsulation of data, data head flag bit according to each the descending encapsulation of data that obtains is judged, comprise RLC control protocol data unit information if determine in the corresponding descending encapsulation of data, this RLC control protocol data cell is sent to control UE sequencing queue unit, if determine to comprise the downlink service data package informatin in the corresponding descending encapsulation of data, this downlink service data package informatin be sent to downlink service data UE sequencing queue unit;
Scheduling unit, be used at each TTI, the UE priority and the ordering of obtaining the UE priority and the ordering of RLC control protocol data unit information correspondence respectively and obtaining downlink service data package informatin correspondence are according to the RLC control protocol data unit information of the corresponding buffer memory of the UE prioritization of RLC control protocol data unit information correspondence order priority scheduling UE;
Control UE sequencing queue unit is used for according to the RLC control protocol data unit information that sends corresponding buffer memory from the schedule information of scheduling unit;
Downlink service data UE sequencing queue unit is used for according to the downlink service data package informatin that sends corresponding buffer memory from the schedule information of scheduling unit.
Control UE sequencing queue unit and downlink service data UE sequencing queue unit can be independent entities, also can be combined as an entity.
Scheduling unit comprises first scheduler module, first judge module, the first dispatching algorithm module, second scheduler module, second judge module, the second dispatching algorithm module, wherein,
First judge module, be used at each TTI, whether the UE that judges the RLC control protocol data unit information correspondence of buffer memory in the control UE sequencing queue unit is greater than one, if, this UE information is sent to first scheduler module, otherwise, send calculating priority level information to the first dispatching algorithm module;
The first dispatching algorithm module, be used to receive the calculating priority level information that first judge module sends, the UE priority of the RLC control protocol data unit information correspondence of buffer memory is sent to first scheduler module with the UE precedence information that calculates in the calculation control UE sequencing queue unit;
First scheduler module is used to receive the UE information that first judge module sends, and dispatches this UE correspondence and is buffered in the RLC control protocol data unit information of controlling in the UE sequencing queue unit; Receive UE precedence information that the first dispatching algorithm module the sends line ordering of going forward side by side, according to the RLC control protocol data unit information of the corresponding buffer memory of clooating sequence scheduling UE;
Second judge module, be used at each TTI, whether the UE that judges the RLC control protocol data unit information correspondence of buffer memory in the control UE sequencing queue unit is greater than one, if, this UE information is sent to second scheduler module, otherwise, send calculating priority level information to the second dispatching algorithm module;
The second dispatching algorithm module, be used to receive the calculating priority level information that second judge module sends, calculate the UE priority of the downlink service data package informatin correspondence of buffer memory in the downlink service data UE sequencing queue unit, the UE precedence information that calculates is sent to second scheduler module;
Second scheduler module, be used to receive the UE information that second judge module sends, determine not have in the control UE sequencing queue unit RLC control protocol data unit information of buffer memory, dispatch this UE correspondence and be buffered in downlink service data package informatin in the downlink service data UE sequencing queue unit; Receive UE precedence information that the second dispatching algorithm module the sends line ordering of going forward side by side, determine not have in the control UE sequencing queue unit RLC control protocol data unit information of buffer memory, according to the downlink service data package informatin of the corresponding buffer memory of clooating sequence scheduling UE.
As seen from the above-described embodiment, the method and the device of transmitting RLC information in the HSDPA system that the present invention proposes, judge according to the information that the data head flag bit of descending encapsulation of data comprises, if be defined as RLC control protocol data unit information, this RLC control protocol data unit information is buffered in MAC-hs buffer queue front portion, if be defined as the downlink service data package informatin, this downlink service data package informatin is buffered in MAC-hs buffer queue afterbody, at each TTI, obtain the UE priority and the ordering of RLC control protocol data unit information correspondence, and the UE priority and the ordering of obtaining downlink service data package informatin correspondence, according to the RLC control protocol data unit information of the corresponding buffer memory of clooating sequence priority scheduling UE.Because RLC control protocol data unit information has been carried out priority treatment, can reduce descending RLC control protocol data unit information caching delay to the influence of uplink service, and can effectively reduce cutting off rate, improve and optimized the HSDPA systematic function.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. transmit the method that Radio Link is controlled RLC information in a high-speed downlink packet access HSDPA system, it is characterized in that this method comprises:
Under Media Access Control MAC-hs affirmation mode, receive descending encapsulation of data continuously, and obtain the data head flag bit of each descending encapsulation of data;
MAC-hs judges that according to the data head flag bit that obtains comprising RLC control protocol data cell in the corresponding descending encapsulation of data still is the downlink service data bag;
RLC control protocol data unit information and downlink service data package informatin in each the descending encapsulation of data that receives are continuously carried out buffer memory respectively;
At each Transmission Time Interval TTI, the UE priority and the ordering of obtaining the user equipment (UE) priority and the ordering of described RLC control protocol data unit information correspondence respectively and obtaining described downlink service data package informatin correspondence are preferentially dispatched described RLC control protocol data unit information according to the UE prioritization of described RLC control protocol data unit information correspondence then.
2. the method for claim 1 is characterized in that, described RLC control protocol data unit information is buffered in control UE sequencing queue, and described downlink service data package informatin is buffered in downlink service data UE sequencing queue.
3. method as claimed in claim 2 is characterized in that, described control UE sequencing queue is in MAC-hs buffer queue front portion, and described downlink service data UE sequencing queue is at MAC-hs buffer queue afterbody.
4. as claim 2 or 3 described methods, it is characterized in that the user equipment (UE) priority and the ordering of obtaining described RLC control protocol data unit information correspondence comprise:
Whether the UE that judges the RLC control protocol data unit information correspondence of buffer memory in the described control UE sequencing queue unit is one, if described UE priority is the highest; If greater than one, the UE priority of calculating the described RLC control protocol data unit information correspondence of buffer memory according to the default dispatching algorithm line ordering of going forward side by side.
5. method as claimed in claim 4 is characterized in that, described default dispatching algorithm comprises: direct ratio fair scheduling algorithm PF, max carrier to interference dispatching algorithm Max C/I or Round Robin algorithm RR.
6. method as claimed in claim 4 is characterized in that, describedly preferentially dispatches described RLC control protocol data unit information according to the UE prioritization of described RLC control protocol data unit information correspondence and comprises:
According to the UE prioritization order of described RLC control protocol data unit information correspondence, the described RLC control protocol data unit information of the corresponding buffer memory of scheduling UE;
Determine not have in the described control UE sequencing queue unit RLC control protocol data unit information of buffer memory, according to the downlink service data package informatin of the corresponding buffer memory of UE prioritization sequential scheduling UE of described downlink service data package informatin correspondence.
7. transmit the device that Radio Link is controlled RLC information in a high-speed downlink packet access HSDPA system, it is characterized in that, be applied under the Media Access Control MAC-hs affirmation mode, this device comprises: judging unit, control user equipment (UE) sequencing queue unit, downlink service data UE sequencing queue unit, scheduling unit, wherein
Described judging unit, be used to receive continuous descending encapsulation of data, data head flag bit according to each the descending encapsulation of data that obtains is judged, if comprise RLC control protocol data unit information in the corresponding descending encapsulation of data, described RLC control protocol data unit information is sent to described control UE sequencing queue unit, if comprise the downlink service data package informatin, described downlink service data package informatin is sent to described downlink service data UE sequencing queue unit;
Described scheduling unit, be used at each Transmission Time Interval TTI, the UE priority and the ordering of obtaining the UE priority and the ordering of described RLC control protocol data unit information correspondence respectively and obtaining described downlink service data package informatin correspondence are preferentially dispatched described RLC control protocol data unit information according to the UE prioritization of described RLC control protocol data unit information correspondence then;
Described control UE sequencing queue unit is used for according to the described RLC control protocol data unit information that sends corresponding buffer memory from the schedule information of described scheduling unit;
Described downlink service data UE sequencing queue unit is used for according to the described downlink service data package informatin that sends corresponding buffer memory from the schedule information of described scheduling unit.
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| US6754215B1 (en) * | 1999-08-17 | 2004-06-22 | Nec Corporation | Packet scheduling device |
| CN1728680A (en) * | 2004-07-31 | 2006-02-01 | 华为技术有限公司 | Method for raising performance of data transmission according to transmission control protocol in mobile communication network |
| CN1852075A (en) * | 2005-12-02 | 2006-10-25 | 华为技术有限公司 | Data-retransmitting method and apparatus |
| EP1783968A2 (en) * | 2003-08-26 | 2007-05-09 | Samsung Electronics Co.,Ltd. | Method and apparatus for scheduling assignment of uplink packet transmission in mobile telecommunication system |
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| US6754215B1 (en) * | 1999-08-17 | 2004-06-22 | Nec Corporation | Packet scheduling device |
| EP1783968A2 (en) * | 2003-08-26 | 2007-05-09 | Samsung Electronics Co.,Ltd. | Method and apparatus for scheduling assignment of uplink packet transmission in mobile telecommunication system |
| CN1728680A (en) * | 2004-07-31 | 2006-02-01 | 华为技术有限公司 | Method for raising performance of data transmission according to transmission control protocol in mobile communication network |
| CN1852075A (en) * | 2005-12-02 | 2006-10-25 | 华为技术有限公司 | Data-retransmitting method and apparatus |
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