CN102111251B

CN102111251B - TDD HSUPA data repeat processing method on UE side

Info

Publication number: CN102111251B
Application number: CN200910247397.3A
Authority: CN
Inventors: 庄菁
Original assignee: MSTAR SEMICONDUCTOR CO Ltd; MStar Semiconductor Inc Cayman Islands
Current assignee: MediaTek Inc
Priority date: 2009-12-29
Filing date: 2009-12-29
Publication date: 2014-09-10
Anticipated expiration: 2029-12-29
Also published as: CN102111251A

Abstract

The present invention relates to a UE side TDD HSUPA data retransmission processing method, comprising: calculating the equivalent absolute authorization value according to the transmission block size of the first scheduled data transmission; judging whether there is scheduled retransmission data; comparing the equivalent absolute authorization value with the current The absolute authorization value determines whether the authorized resources are sufficient; the HARQ entity judges whether to transmit new data or retransmit data according to whether the authorized resources are sufficient; the E-TFC selects the entity. The comparing the equivalent absolute authorization value with the current absolute authorization value is to compare the equivalent absolute authorization value with the current authorized power AGV value. The comparison of the equivalent absolute authorized value and the current absolute authorized value is to default the current authorized power AGV value as the maximum transmission permitted power of the UE. The invention reduces the complexity of scheduling data retransmission processing, effectively improves the scheduling data retransmission processing efficiency, improves the flexibility of HARQ entity operation, thereby improving the stability and use flexibility of the system.

Description

A kind of UE side TDD HSUPA data re-transmission processing method

Technical field

The invention belongs to mobile communication technology field, particularly a kind of UE side TDDHSUPA data re-transmission processing method in 3G (Third Generation) Moblie.

Background technology

According to 3GPP and CCSA related protocol, if any one HARQ process of incidence set has data retransmission to hang up, HARQ entity need to judge each the HARQ process to incidence set, and the resource of whether authorizing is enough used for re-transmitting data block; And distribute resource whether can carry corresponding transmission block by E-TFC select entity adjudicate.If a HARQ process in the enough at least incidence sets of authorization resources retransmits, select to comprise the most always the HARQ process of (oldest) MAC-d PDU and retransmit, and notice E-TFC selects this TTI of entity for retransmitting.If authorization resources retransmits any one HARQ process of incidence set not, HARQ entity is selected an available HARQ process from incidence set, transmission new data; If incidence set does not have available HARQ process (having data retransmission), select to comprise the most always the HARQ process of (oldest) MAC-d PDU and carry out the transmission of new data, and the oldest original MAC-d PDU is abandoned.For latter two situation, all need to notify E-TFC to select this TTI of entity for new data transmission.

The scheme of describing according to related protocol 3GPP and CCSA, whether the processing procedure of data retransmission need to select entity judgement resource enough through E-TFC, determine handling process by HARQ entity according to the situation of authorization resources again, finally notifying E-TFC to select entity is to transmit new data or data retransmission, must bring like this complexity of data retransmission processing.Consider that the re-transmission of non-scheduled data is not subject to the impact of authorization resources, this process only retransmits effectively for dispatching data.

Problem during this HSUPA HARQ processes, is not only present in LCR-TDD, is also present in 3.84McpsTDD and 7.86Mcps TDD.

Summary of the invention

The present invention seeks to propose a kind of UE side TDD HSUPA data re-transmission processing method, data dispatching retransmission process process is carried out to suitable optimization process, avoid adopting E-TFC to select entity to judge retransmission condition.

Technical scheme of the present invention is that a kind of UE side TDD HSUPA data re-transmission processing method, comprises step:

According to the transmission block of schedule data transmission (Transport Block) size first, calculate equivalent absolute grant value;

Judge whether scheduling data retransmission;

More equivalent absolute grant value and current absolute grant value, determine that whether authorization resources is enough;

Whether HARQ entity is enough according to authorization resources, and judgement is to pass new data or data retransmission;

E-TFC selects entity.

Further, described more equivalent absolute grant value and current absolute grant value are by equivalent absolute grant value and current authorization power AGV value relatively.

Further, described more equivalent absolute grant value and current absolute grant value are that current authorization power AGV value is defaulted as to UE maximum transmitted license power.

It is below the analysis in principle to content of the present invention.

According to MAC protocal analysis, data dispatching retransmits can be divided into three steps, and the first step is that E-TFC selects entity to judge that whether authorization resources is enough; Second step judges that by HARQ entity this TTI is for data retransmission or new data; The 3rd step is to notify E-TFC to select entity to carry out transfer of data judged result.

In fact the judgement of authorization resources does not need relatively to realize by the size of data transmission block.So just need to not select entity to draw the large small set of current optional data by E-TFC, whether in current data set, judge that according to retransmitting transmission block size whether authorization resources is enough.

According to 3GPP and CCSA agreement, β _e=β _{0, e}+ α _e+ Δ _harq, β _ethe gain factor that E-TFC selects transmission block, β _{0, e}be normalized value, can be calculated by selected data block size α _ethe logarithm value corresponding with spreading factor, Δ _harqit is the maximum power offset values of corresponding data type (data dispatching or non-scheduled data).Through-put power P _e-PUCH=P _e-base+ L+ β _e, P _e-basefor the closed power value that UE safeguards, L is circuit loss value.

E-TFC selects entity to determine current data set according to the minimum value of current absolute grant power and UE maximum transmission power.Absolute grant power is according to β _e=(AGV+ α _e) P that calculates _e-PUCH, wherein AGV (Absolute Grant Value)=β _{0, e}+ Δ _harq.UE maximum transmission power is the minimum value of getting the peak power output that the UE maximum transmission power of network instruction is corresponding with UE power class.

The transmission block size of selecting when recording dispatching data of the present invention (corresponding HARQ instance process) initial transmission, calculates the equivalent absolute grant value of actual use in the case, and this calculated value is β _{0, e}+ Δ _harq.If absolute grant power is less than or equal to UE maximum transmission power, as long as equivalent absolute grant value is less than or equal to current absolute grant value (Absolute Grant Value), can judge that current authorization resources is enough, otherwise think authorization resources deficiency.If absolute grant power is greater than UE maximum transmission power, also, as long as equivalent absolute grant value is less than or equal to current absolute grant value (Absolute Grant Value), just can judge that current authorization resources is enough; Because equivalent absolute grant value, when data are transmitted for the first time, meets the condition that is not more than UE maximum transmission power certainly.

Therefore, carrying out schedule data transmission while judging, the equivalent absolute grant value of calculating when available corresponding HARQ instance process initial data transfer and current absolute grant value (Absolute Grant Value) directly compare judgement.If be less than or equal to current authorization power, can think that authorization resources is enough, otherwise think authorization resources deficiency.

According to technical scheme processing method of the present invention, can reduce the complexity of data dispatching retransmission process, improve correlated performance.Simultaneously, the present invention changes the prerequisite Rule of judgment to the processing of scheduling data retransmission of HARQ entity, greatly reduce the degree of coupling that HARQ entity and E-TFC select entity, effectively improve data dispatching retransmission process efficiency, improve the flexibility ratio that HARQ entity uses, thereby improved the stability and use flexibility of system.

Brief description of the drawings

Fig. 1 is disclosed HSUPA HARQ data retransmission process flow figure in 3GPP and CCSA

Fig. 2 is disclosed HSUPA HARQ data retransmission process flow figure in technical solution of the present invention

Fig. 3 is HSUPA HARQ data retransmission process flow figure in one embodiment of the invention

HSUPA HARQ data retransmission process flow figure in Fig. 4 further embodiment of this invention

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.

The present invention is a kind of HSUPA HARQ data re-transmission universal process method, not only can be applicable to LCR-TDD, also can be applicable to 3.84Mcps TDD and 7.86Mcps TDD.TDD HSUPA scheduling data retransmission under different rates all can adopt the present invention to process.According to 3GPP and CCSA agreement, each HARQ process comprises one section of physics Buffer (HARQ Buffer).Each HARQ process is safeguarded a state variable CURRENT_TX_NB, the number of times that the MAC-e PDU in instruction Buffer sends; Each HARQ process is safeguarded timer RTX_TIMER, is used for adjudicating the re-transmission that whether abandons a hang-up.When setting up HARQ process, CURRENT_TX_NB is initialized as to 0.When new transmission starts, HARQ physical arrangements HARQ attribute is for transmission and the re-transmission of this MAC-e PDU.HARQ attribute comprises maximum transmission times, the power excursion for physical layer, retransmission timer.

A kind of UE side TDD HSUPA data re-transmission processing method of the present invention, comprises step: according to the transmission block of schedule data transmission (Transport Block) size first, calculate equivalent absolute grant value; Judge whether scheduling data retransmission; More equivalent absolute grant value and current absolute grant value, determine that whether authorization resources is enough; Whether HARQ entity is enough according to authorization resources, and judgement is to pass new data or data retransmission; E-TFC selects entity.Described more equivalent absolute grant value and current absolute grant value are by equivalent absolute grant value and current authorization power AGV value relatively.Described more equivalent absolute grant value and current absolute grant value are that current authorization power AGV value is defaulted as to UE maximum transmitted license power.

Taking LCR TDD HSUPA as example, provide an embodiment.Suppose that existing detection need have the HARQ data dispatching of certain process to need to retransmit, and only have this process to have data retransmission to exist.Current C URRENT_TX_NB does not exceed maximum retransmission, and RTX_TIMER starts not overtime, is handled as follows:

1) enter E-TFC and select entity, determine current data set according to the minimum value of current authorization power and UE peak power output;

2) judge that re-transmitting data block size is whether in current data set, if illustrate that in set authorization resources is enough;

3) supposition authorization resources is enough, and E-TFC selects entity that judged result is passed to HARQ entity;

4) HARQ entity CURRENT_TX_NB adds one, RTX continuation timing;

5) HARQ entity notice E-TFC selection entity is current is data retransmission, and controls data re-transmission.

Concrete implementing procedure is shown in Fig. 3, can comprise step:

Step S301, carries out the transfer of data of scheduling type;

Step S302, has judged whether data retransmission, if having, performs step S303, if do not have, turns execution step S306;

Step S303, more current authorization power AGV value is defaulted as UE maximum transmitted license power;

Step S304, according to the logic channel of UE maximum transmitted license power and current configuration, physical channel parameters is determined current effective TFC set;

Step S305, judges that data retransmission size whether in efficient set, if so, performs step S307, if not, perform step S306;

Step S306, prepares to carry out the transmission of new data, and method ends flow process;

Step 8307, prepares to carry out the transmission of data retransmission.

Be below the another embodiment of method of the present invention, be handled as follows:

1) determine equivalent absolute grant value according to the data dispatching size sending first;

2), according to the comparative result of equivalent absolute grant value and current absolute grant value, judge that whether current authorization resources is enough;

3) supposition authorization resources is enough, and HARQ entity CURRENT_TX_NB adds one, RTX and continues timing;

4) HARQ entity control data retransmit.

Idiographic flow as shown in Figure 4, can comprise the following steps:

Step S401, carries out the transfer of data of scheduling type;

Step S402, has judged whether data retransmission, if had, performs step S403, if do not have, performs step S404;

Step S403, judges whether equivalent absolute grant value is less than current authorization power AGV value, if so, performs step S405, if not, perform step S404;

Step S404, prepares to carry out the transmission of new data, and method ends flow process;

Step S405, prepares to carry out the transmission of data retransmission.

Above-described embodiment is for different situations is described, but does not represent all extreme cases, and does not also limit the scope of application of this invention.

According to the protocol description of 3GPP, in a 5ms TTI, only have a MAC-e PDU packet to pass.The MIPS that is located at the group bag that completes separately a MAC-e PDU in 5ms is m, notes: the consumption of this part MIPS comprises the bit displacement to data processing, and data power is calculated relatively, calculating of TFC valid data set etc. process.In addition, this MIPS consumes the processing mainly for up HSUPA data, and real system also needs to consider the processing of other partial function modules.Situation about retransmitting if there is data dispatching, must consume this part MIPS m according to the implementation of protocol description, and the MIPS that adopts the present invention to need levels off to 0.

Relatively can find by above-mentioned, while adopting method retransfer scheduling data of the present invention, not need to select entity by E-TFC, improve the treatment effeciency of data re-transmission.Power factor (PF) can not be considered in re-transmission in conjunction with non-scheduled data, can find that HARQ entity completely can independent process data re-transmission process comprises the dispose procedure of data, has greatly improved the flexibility of the HARQ entity division of labor.

Claims

1. a UE side TDD HSUPA data re-transmission processing method, is characterized in that, comprises step:

According to the transmission block size of schedule data transmission first, calculate equivalent absolute grant value, wherein absolute grant value is calculated as β _{0, e}+ Δ _harq, β _{0, e}be normalized value and calculated by transmission block size;

Judge whether scheduling data retransmission;

Notify E-TFC to select entity to carry out transfer of data judged result,

Wherein, described more equivalent absolute grant value and current absolute grant value, be by equivalent absolute grant value and current authorization power AGV value relatively, or current authorization power AGV value is defaulted as to UE maximum transmitted permits power.