CN107801240A - A kind of method and apparatus for sending, receiving Timing Advance - Google Patents
A kind of method and apparatus for sending, receiving Timing Advance Download PDFInfo
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- CN107801240A CN107801240A CN201610809532.9A CN201610809532A CN107801240A CN 107801240 A CN107801240 A CN 107801240A CN 201610809532 A CN201610809532 A CN 201610809532A CN 107801240 A CN107801240 A CN 107801240A
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- 238000013507 mapping Methods 0.000 claims description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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Abstract
The invention discloses a kind of method and apparatus for sending, receiving Timing Advance, wherein, this method includes：PRACH corresponding to base station measurement UE obtains time adjusted value, to determine up TA；Data area corresponding to TAC of the base station in the RAR of place cell adjusts TA, to determine TASize；The base station is by the T of determinationAIt is mapped in the RAR of place cell TAC, and is sent to UE.Present invention measurement obtains TAAfterwards, the T measuredAThe data area that TAC corresponding to RAR can be represented may be exceeded, it is therefore desirable to TAIt is adjusted, to meet data area that TAC corresponding to RAR can be represented, the data area that this method can represent according to TAC is to TAIt is adjusted, when setting the scope, flexibility is larger, as long as setting data area to be related to TAPossibility value, this method solve problem of the prior art.
Description
Technical field
The present invention relates to communication field, more particularly to a kind of method and apparatus for sending, receiving Timing Advance.
Background technology
In existing Long Term Evolution (Long Term Evolution, abbreviation LTE) communication system, and advanced drill for a long time
Enter in (LTE-Advanced, abbreviation LTE-A) communication system, user equipment (User Equipment, abbreviation UE) receives base station
The timing advance order (Timing Advanced Command, abbreviation TAC) sent determines Physical Uplink Shared Channel
(Physical Uplink Share CHannel, abbreviation PUSCH), Physical Uplink Control Channel (Physical Uplink
Control CHannel, abbreviation PUCCH) and monitoring reference signal (Sounding Reference Signal, abbreviation SRS)
Up transmitting timing.
In the prior art, what the accidental access response (Random Access Response, abbreviation RAR) that UE is received carried
TAC represents that corresponding up advance value is denoted as T with 11 bitsA, its effective span is 0~1282, and unit is 16Ts, its
Middle 1Ts=1/30720ms.TAValue is base station by detecting Physical Random Access Channel (Physical Random corresponding to the UE
Access Channel, abbreviation PRACH) obtain.For UE after subframe n receives TAC, corresponding up transmitting timing can be in subframe
(n+k) original position comes into force, i.e., the up timing of PUSCH, PUCCH, SRS now need the time of TA*16Ts in advance, its
Middle k is generally equal to 6.
Due to the TAC that in the prior art, is carried in the RAR up lead represented be on the occasion of.In practical application, it can also go out
The T that existing base station calculates according to corresponding PRACHAIt is the situation of negative value, now due to the limitation of prior art, can causes on the UE
Row synchronization failure.In LTE-A newest agreement, for same timing advance group (Timing Advanced Group, abbreviation
TAG) include multiple uplink cells, and during frame structure type difference in these cells, UE according to TDD timing advance offset
(NTA offset) is carried out, and wherein NTA offset are the leads of UE sub-frame of uplink versus downstream subframes, and TDD and FDD's takes
Value differs, the T that now base station calculates according to corresponding PRACHANegative value is likely to be, according to prior art UE can be caused up
Synchronization failure.
The content of the invention
The present invention provides a kind of method and apparatus for sending, receiving Timing Advance, to solve the as follows of prior art
Problem：The T that base station calculates according to corresponding PRACHAWhen being negative value, due to the limitation of prior art, the situation can not be carried out
Processing, so the UE uplink synchronous can be caused to fail.
In order to solve the above technical problems, on the one hand, the present invention provides a kind of method of transmission timing lead, including：Base
The PRACH corresponding to measurement UE that stands obtains time adjusted value, to determine up TA；In RAR of the base station according to place cell
Data area corresponding to TAC adjusts TA, to determine TASize；The base station is by the T of determinationAIt is mapped to the place cell
In RAR TAC, and it is sent to UE.
Optionally, data area corresponding to the timing advance order TAC in the accidental access response RAR of place cell
Adjust TA, including：It is respectively T1 and T2 that the base station, which sets two endpoint values of data area corresponding to the TAC, wherein, by
The data area of T1 and T2 compositions is estimated according to cell coverage area, T occursAProbability exceed predetermined probabilities data model
Enclose；T1 is more than T2；The T that the base station determines in measurementAIn more than or equal to T2 and when being less than or equal to T1, it is determined that adjustment TAValue
For TA；In the T that measurement determinesADuring less than T2, it is determined that adjustment TAValue be T2；In the T that measurement determinesADuring more than T1, it is determined that adjustment
TAValue be T1.
Optionally, base station is by the T of determinationAIt is mapped in the RAR of place cell TAC, including：The base station is by institute
State TAC correspond to the arrays of all numbers into set be divided into two without the subsets occured simultaneously, and be designated as the first subset and the second son
Collection；The base station is corresponded 0 to the number in T1 data areas and the number in first subset, by the data of T2 to -1
In the range of number corresponded with the number in the yield in the second subset；The base station is in first subset or second son
Concentrate the T searched with being determined after adjustmentAOne-to-one number, by TAIt is mapped in descending RAR TAC.
On the other hand, the present invention also provides a kind of method for receiving Timing Advance, including：UE is received from base station
RAR, and up T is extracted from the TAC in the RARA, wherein, the TAIt is base station according to TAC pairs in the RAR of place cell
The data area answered adjusts what is obtained；UE data areas according to corresponding to the TAC all numbers corresponding with the TAC
Array into set corresponding relation to obtained TAParsed, to obtain accurate TA。
Optionally, the array of UE data areas according to corresponding to the TAC all numbers corresponding with the TAC into
The corresponding relation of set is to obtained TAParsed, to obtain accurate TA, including：The UE corresponds to all in the TAC
Several arrays into set in search for the TA；The UE is searching the TAAfterwards, the T is determinedAPlace subset corresponds
Data area, and in the data area search with the TAOne-to-one number, to obtain accurate TA。
On the other hand, the present invention also provides a kind of device of transmission timing lead, including：Measurement module, for measuring
PRACH corresponding to UE obtains time adjusted value, to determine up TA；Adjusting module, for the Stochastic accessing according to place cell
Respond data area adjustment T corresponding to the timing advance order TAC in RARA, to determine TASize；Mapping block, for inciting somebody to action
The T of determinationAIt is mapped in the RAR of place cell TAC, and is sent to UE.
Optionally, the adjusting module includes：Setting unit, for setting two of data area corresponding to the TAC
Endpoint value is respectively T1 and T2, wherein, the data area being made up of T1 and T2 is estimated according to cell coverage area, T occursA
Probability exceed predetermined probabilities data area；T1 is more than T2；Adjustment unit, for the T determined in measurementAIn more than or equal to
T2 and when being less than or equal to T1, it is determined that adjustment TAValue be TA；In the T that measurement determinesADuring less than T2, it is determined that adjustment TAValue be T2；
In the T that measurement determinesADuring more than T1, it is determined that adjustment TAValue be T1.
Optionally, the mapping block includes：Split cells, for the TAC is corresponded to the arrays of all numbers into
Set is divided into two without the subset occured simultaneously, and is designated as the first subset and yield in the second subset；Corresponding unit, for arriving T1 data by 0
In the range of number corresponded with the number in first subset, by the number in the data areas of T2 to -1 with described second son
Number in collection is corresponded；Map unit, after searching and adjusting in first subset or the yield in the second subset
The T of determinationAOne-to-one number, by TAIt is mapped in descending RAR TAC.
On the other hand, the present invention also provides a kind of device for receiving Timing Advance, including：Receiving module, for receiving
RAR from base station, and uplink timing advance T is extracted from the TAC in the RARA, wherein, the TAIt is base station according to institute
Data area corresponding to TAC in the RAR of cell adjusts what is obtained；Parsing module, for the data according to corresponding to the TAC
The array of scope all numbers corresponding with the TAC into set corresponding relation to obtained TAParsed, to obtain standard
True TA。
Optionally, the parsing module includes：Search unit, for corresponded in the TAC arrays of all numbers into
The T is searched in setA；Resolution unit, for searching the TAAfterwards, the T is determinedAPlace subset counts correspondingly
According to scope, and searched and the T in the data areaAOne-to-one number, to obtain accurate TA。
Present invention measurement obtains TAAfterwards, the T measuredAThe data area that TAC corresponding to RAR can be represented may be exceeded, because
This is needed to TAIt is adjusted, to meet data area that TAC corresponding to RAR can be represented.Then, it is necessary to by the T after adjustmentA
In cell RAR TAC where being mapped to, UE is then forwarded to, the data area that this method can represent according to TAC is to TAAdjusted
Whole, when setting the scope, flexibility is larger, as long as setting data area to be related to TAPossibility value, this method solution
Determine problem of the prior art.
Brief description of the drawings
Fig. 1 is the flow chart of the method for transmission timing lead in first embodiment of the invention；
Fig. 2 is the flow chart for the method that Timing Advance is received in second embodiment of the invention；
Fig. 3 is the structural representation of the device of transmission timing lead in third embodiment of the invention；
Fig. 4 is the structural representation of the device adjusting module of transmission timing lead in third embodiment of the invention；
Fig. 5 is the structural representation of the device mapping block of transmission timing lead in third embodiment of the invention；
Fig. 6 is the structural representation for the device that Timing Advance is received in fourth embodiment of the invention；
Fig. 7 is the structural representation for the device parsing module that Timing Advance is received in fourth embodiment of the invention.
Embodiment
In order to solve the following problem of prior art：The T that base station calculates according to corresponding PRACHAWhen being negative value, due to existing
There is the limitation of technology, the situation can not be handled, so the UE uplink synchronous can be caused to fail；The invention provides one kind
The method and apparatus for sending, receiving Timing Advance, below in conjunction with accompanying drawing and embodiment, the present invention is carried out further detailed
Explanation.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, the present invention is not limited.
First embodiment of the invention provides a kind of method of transmission timing lead, and the flow of this method is as shown in figure 1, bag
Include step S102 to S106：
S102, PRACH corresponding to base station measurement UE obtain time adjusted value, to determine up TA；
Data area corresponding to S104, TAC of the base station in the RAR of place cell adjusts TA, to determine TASize；
S106, base station is by the T of determinationAIn the RAR of cell TAC where being mapped to, and it is sent to UE.
Measurement of the embodiment of the present invention obtains TAAfterwards, the T measuredAThe data that TAC corresponding to RAR can be represented may be exceeded
Scope, it is therefore desirable to TAIt is adjusted, to meet data area that TAC corresponding to RAR can be represented.Then, it is necessary to will adjust
T after wholeAIn cell RAR TAC where being mapped to, UE, the data area pair that this method can represent according to TAC are then forwarded to
TAIt is adjusted, when setting the scope, flexibility is larger, as long as setting data area to be related to TAPossibility value, should
Method solves the following problem of prior art：The T that base station calculates according to corresponding PRACHAWhen being negative value, due to prior art
Limitation, the situation can not be handled, thus can cause the UE uplink synchronous fail.
During implementation, corresponding to the timing advance order TAC in the accidental access response RAR of place cell
Data area adjusts TAWhen, it can specifically include following process：Base station sets two endpoint values point of data area corresponding to TAC
Not Wei T1 and T2, wherein, the data area being made up of T1 and T2 be estimated according to cell coverage area, there is TAProbability surpass
Cross the data area of predetermined probabilities；T1 in the present embodiment is represented on the occasion of T2 represents negative value, and T1 is more than T2；Base station is true in measurement
Fixed TAIn more than or equal to T2 and when being less than or equal to T1, it is determined that adjustment TAValue be TA；In the T that measurement determinesADuring less than T2,
It is determined that adjustment TAValue be T2；In the T that measurement determinesADuring more than T1, it is determined that adjustment TAValue be T1.Certainly, implementing
When, T1 and T2 value can be configured according to demand, it is positive and negative can.
Base station is by the T of determinationAWhen in the RAR of cell TAC where being mapped to, it can include following process：Base station will
TAC correspond to the arrays of all numbers into set be divided into two without the subsets occured simultaneously, and be designated as the first subset and yield in the second subset；
During specific implementation, in order to be matched with above-mentioned data area, the number of number (i.e. element) in the first subset can be arranged to T1+
1, the number counted in yield in the second subset is arranged to T2, then T1+1+T2 is equal to all numbers of number.Then, base station is arrived 0
Number in T1 data areas is corresponded with the number in the first subset, by the number and yield in the second subset in the data areas of T2 to -1
Interior number is corresponded, and can thus realize complete one-to-one relationship.Base station is in the first subset or the second son
Concentrate the T searched with being determined after adjustmentAOne-to-one number, the number found is the number in subset, is positive number, is to add
Into TAC, in this way, it is possible to TAThe TAC for being mapped to descending RAR is suffered.
Second embodiment of the invention provides a kind of method for receiving Timing Advance, and this method carries with above-mentioned transmission timing
The method of preceding amount is corresponding, and the process performed for receiving side, it includes step S202 to S204：
S202, UE receive the RAR from base station, and up T is extracted from the TAC in RARA, wherein, TABase station according to
Data area corresponding to TAC in the RAR of place cell adjusts what is obtained；
The array of S204, the UE data area according to corresponding to TAC all numbers corresponding with TAC into set corresponding relation
To obtained TAParsed, to obtain accurate TA。
In implementation process, the T of UE side joints receiptsAIt is data area corresponding to TAC of the base station in the RAR of place cell
What adjustment obtained, therefore, in order to parse the TA, it is necessary to know data area corresponding to the TAC that base station side finally determines be it is how many,
Also need to know data area and the corresponding relation of set.However, by T1 and T2 are just according to institute when whole system is established
Determination is estimated in cell coverage area, therefore, data area can be sent to user, is established for data area and set
Corresponding relation or base station be sent to user side.
The array of UE data areas according to corresponding to TAC all numbers corresponding with TAC into set corresponding relation to
The T arrivedAWhen being parsed, first TAC correspond to the arrays of all numbers into set in search for TA, searching TAAfterwards, T is determinedA
The one-to-one data area of place subset, and lookup and T in data areaAOne-to-one number, to obtain accurate TA。
The process of the parsing is actually the inverse process of base station side mapping process.
Third embodiment of the invention provides a kind of device of transmission timing lead, structural representation such as Fig. 3 of the device
It is shown, including：
Measurement module 10, time adjustment is obtained for measuring Physical Random Access Channel PRACH corresponding to user equipment (UE)
Value, to determine up TA；Adjusting module 11, coupled with measurement module 10, for the accidental access response RAR according to place cell
In timing advance order TAC corresponding to data area adjustment TA, to determine TASize；Mapping block 12, with adjusting module 11
Coupling, for by the T of determinationAIn the RAR of cell TAC where being mapped to, and it is sent to UE.
Fig. 4 shows the structural representation of above-mentioned adjusting module 11, and it includes：Setting unit 110, for setting TAC pairs
Two endpoint values of the data area answered are respectively T1 and T2, wherein, the data area being made up of T1 and T2 is covers according to cell
It is that lid scope is estimated, there is TAProbability exceed predetermined probabilities data area；It is on the occasion of and T1 is more than during T1 with T2 differences
T2；Adjustment unit 111, coupled with setting unit 110, for the T determined in measurementAIn more than or equal to T2 and being less than or equal to T1
When, it is determined that adjustment TAValue be TA；In the T that measurement determinesADuring less than T2, it is determined that adjustment TAValue be T2；In the T that measurement determinesA
During more than T1, it is determined that adjustment TAValue be T1.
Fig. 5 shows the structural representation of above-mentioned mapping block 12, and it includes：Split cells 120, for TAC is corresponding
The array of all numbers into set be divided into two without the subsets occured simultaneously, and be designated as the first subset and yield in the second subset；It is corresponding single
Member 121, is coupled with split cells 120, and a pair of progress 1 is counted for being arrived 0 in number and the first subset in T1 data areas
Should, the number in the number and yield in the second subset in the data areas of T2 to -1 is corresponded；Map unit 122, with corresponding unit
121 couplings, for searching the T with being determined after adjustment in the first subset or yield in the second subsetAOne-to-one number, by TAMapping
Into descending RAR TAC.
When realizing, if it is determined that it is 8 that RAR TAC, which takes bit number, then can represent 28Number (i.e. 256 numbers), then can
The scope enough represented is exactly the scope of 256 numbers, due to T1 and T2 can be estimated according to cell coverage area, accordingly, it is possible to
A specific T1 and T2 value is determined, for example, T2 to T1 data area is -127 to 128.In this manner it is possible to according to the data
Scope adjusts TASize.
Due to also needing to TASend, therefore, it is necessary to by the TAThe array of all numbers corresponding with TAC into set
A correspondence is carried out, is by the positive T in data area in the present embodimentAWith negative TAIt is divided into two parts to carry out respectively pair
Should, really reality, by whole data area with entirely gather carry out it is corresponding also possible.
Fourth embodiment of the invention additionally provides a kind of device for receiving Timing Advance, and the device can be implemented with the 3rd
The device of transmission timing lead in example interacts, its structural representation as shown in fig. 6, including：
Receiving module 20, for receiving the accidental access response RAR from base station, and from the timing advance order in RAR
Uplink timing advance T is extracted in TACA, wherein, TAIt is data area corresponding to TAC of the base station in the RAR of place cell
What adjustment obtained；Parsing module 21, coupled with receiving module 20, it is corresponding with TAC all for the data area according to corresponding to TAC
The array of number into set corresponding relation to obtained TAParsed, to obtain accurate TA。
The structural representation of above-mentioned parsing module 21 is as shown in fig. 7, it can also include：Search unit 210, in TAC
The array of corresponding all numbers into set in search for TA；Resolution unit 211, coupled with search unit 210, for searching
TAAfterwards, T is determinedAThe one-to-one data area of place subset, and lookup and T in data areaAOne-to-one number, with
To accurate TA。
Fifth embodiment of the invention provides a kind of communication system, and it includes base station and UE, wherein, base station includes above-mentioned the
The device of transmission timing lead in three embodiments, UE include the dress of the reception Timing Advance in above-mentioned fourth embodiment
Put.When realizing, above-mentioned two device can be arranged on base station and UE inside in an integrated manner respectively, its function mould included
Block is with 3rd embodiment and fourth embodiment, and here is omitted.
Sixth embodiment of the invention provides a kind of communication system, and the communication system includes base station and UE, the embodiment energy
Enough solves the problems, such as existing UE uplink synchronous failure.The specific method of base station and UE application the present embodiment carries out the hair of TAC in RAR
Send and receive, no matter the T that base station calculates according to PRACHAWhether value is negative value, can ensure UE uplink synchronous success.
The implementation process of the communication system is illustrated below, in the present embodiment, T1 is the maximum T that RAR TAC can be representedAValue ,-
T2 is the minimum T that TAC can be representedAValue, T1 and T2 are all higher than 0, and (T1+T2)<2N-1.
It includes step 1 to 4：
Step 1：Base station obtains time adjusted value Ts of the UE in respective cell by detecting PRACHA*D.Wherein D value
Can be 16*Ts=16/30720ms；D is TAThe unit of value.
Step 2：The scope that can be represented according to RAR TAC adjusts TASize.
If TA>T1, make TA=T1；If-T2<=TA<=T1, makes TA=TA；If TA<- T2, make TA=-T2.
Step 3：Base station is by TAValue is mapped to the RAR of respective cell TAC, and issues UE.
The TAC for representing RAR with N takes bit number, then N-bit can represent 2NNumber, by this 2NThe set note of number composition
Make Z.Represent Z two subsets without common factor respectively with A and B, wherein A size is (T1+1), and B size is T2.0 is arrived
This (T1+1) number of T1 and set A element are corresponded, and-T2 to -1 this T2 number and set B element is corresponded, from
And can be TAValue is mapped in RAR TAC.
Step 4：After UE successfully obtains the TAC of the RAR, T is parsedAValue, when carrying out corresponding uplink physical channel transmission
Between adjust.
Below, said process is described in detail with reference to specific example.
When realizing, N=11, T1=1282 can be taken.T2 span is 0 to arrive (2N-T1-1), and as T2=0, B is
Null set；As T2=2N-T1-1, TAC all optional elements are used to represent TAValue.When T2 value arrives (2N-T1- for 1
2) during one in value, in S set in addition to set A and B element, also other elements, but these elements are not used in table
Show TAValue.Preferable T2 values are 624.
After UE successfully obtains the TAC of the RAR, T is parsedAValue, carry out corresponding uplink physical channel and send time adjustment.
Parse TAThe process of value is above-mentioned TAValue is mapped to the inverse process of TAC process.UE after subframe n successfully obtains the TAC of the RAR,
Corresponding up transmitting timing can come into force in the original position of subframe (n+k), i.e., PUSCH, PUCCH, SRS's now is up fixed
When need T in advanceA* the D times.
When realizing, a kind of farther covering scene during in order to give N and D, it is assumed that base station passes through detection in the cell
PRACH obtains time adjusted value Ts of the UE in respective cellA*D.For N, N=11, T1=2047 can be taken.T2=0, now
B is null set.TAC all optional elements are used to represent non-negative TAValue.
After UE successfully obtains the TAC of the RAR, T is parsedAValue, carry out corresponding uplink physical channel and send time adjustment.
Parse TAThe process of value is above-mentioned TAValue is mapped to the inverse process of TAC process.UE after subframe n successfully obtains the TAC of the RAR,
Corresponding up transmitting timing can come into force in the original position of subframe (n+k), i.e., PUSCH, PUCCH, SRS's now is up fixed
When need T in advanceA* the D times.
Although being example purpose, the preferred embodiments of the present invention are had been disclosed for, those skilled in the art will recognize
Various improvement, increase and substitution are also possible, and therefore, the scope of the present invention should be not limited to above-described embodiment.
Claims (10)
- A kind of 1. method of transmission timing lead, it is characterised in that including：Physical Random Access Channel PRACH obtains time adjusted value corresponding to base station measurement user equipment (UE), up fixed to determine When lead TA；Data area corresponding to timing advance order TAC of the base station in the accidental access response RAR of place cell is adjusted Whole TA, to determine TASize；The base station is by the T of determinationAIt is mapped in the RAR of place cell TAC, and is sent to UE.
- 2. the method as described in claim 1, it is characterised in that according to the timing in the accidental access response RAR of place cell Data area corresponding to advance command TAC adjusts TA, including：It is respectively T1 and T2 that the base station, which sets two endpoint values of data area corresponding to the TAC, wherein, by T1 and T2 groups Into data area be estimated according to cell coverage area, there is TAProbability exceed predetermined probabilities data area；T1 is big In T2；The T that the base station determines in measurementAIn more than or equal to T2 and when being less than or equal to T1, it is determined that adjustment TAValue be TA；Surveying Measure the T determinedADuring less than T2, it is determined that adjustment TAValue be T2；In the T that measurement determinesADuring more than T1, it is determined that adjustment TAValue be T1。
- 3. method as claimed in claim 1 or 2, it is characterised in that base station is by the T of determinationAIt is mapped to the place cell In RAR TAC, including：The base station by the TAC correspond to the arrays of all numbers into set be divided into two without the subsets occured simultaneously, and be designated as First subset and yield in the second subset；The base station is corresponded 0 to the number in T1 data areas and the number in first subset, and T2 to -1 is counted Number in the range of is corresponded with the number in the yield in the second subset；The T with being determined after adjustment is searched in first subset or the yield in the second subset in the base stationAOne-to-one number, with By TAIt is mapped in descending RAR TAC.
- A kind of 4. method for receiving Timing Advance, it is characterised in that including：User equipment (UE) receives the accidental access response RAR from base station, and from the timing advance order TAC in the RAR Extract uplink timing advance TA, wherein, the TAIt is that data area corresponding to TAC of the base station in the RAR of place cell is adjusted It is whole to obtain；The array of UE data areas according to corresponding to the TAC all numbers corresponding with the TAC into set correspondence The T that relation pair obtainsAParsed, to obtain accurate TA。
- 5. method as claimed in claim 4, it is characterised in that the UE according to corresponding to the TAC data area with it is described TAC correspond to the arrays of all numbers into set corresponding relation to obtained TAParsed, to obtain accurate TA, including：The UE the TAC correspond to the arrays of all numbers into set in search for the TA；The UE is searching the TAAfterwards, the T is determinedAThe one-to-one data area of place subset, and in the data model Enclose interior lookup and the TAOne-to-one number, to obtain accurate TA。
- A kind of 6. device of transmission timing lead, it is characterised in that including：Measurement module, time adjusted value is obtained for measuring Physical Random Access Channel PRACH corresponding to user equipment (UE), with true Determine uplink timing advance TA；Adjusting module, for data model corresponding to the timing advance order TAC in the accidental access response RAR according to place cell Enclose adjustment TA, to determine TASize；Mapping block, for by the T of determinationAIt is mapped in the RAR of place cell TAC, and is sent to UE.
- 7. device as claimed in claim 6, it is characterised in that the adjusting module includes：Setting unit, two endpoint values for setting data area corresponding to the TAC are respectively T1 and T2, wherein, by T1 Data area with T2 compositions is estimated according to cell coverage area, T occursAProbability exceed predetermined probabilities data model Enclose；T1 is more than T2；Adjustment unit, for the T determined in measurementAIn more than or equal to T2 and when being less than or equal to T1, it is determined that adjustment TAValue be TA；In the T that measurement determinesADuring less than T2, it is determined that adjustment TAValue be T2；In the T that measurement determinesADuring more than T1, it is determined that adjustment TA Value be T1.
- 8. device as claimed in claims 6 or 7, it is characterised in that the mapping block includes：Split cells, for the TAC is corresponded to the arrays of all numbers into set be divided into two without the subsets occured simultaneously, and It is designated as the first subset and yield in the second subset；Corresponding unit, for 0 to the number in T1 data areas and the number in first subset to be corresponded, by T2 Corresponded to the number in -1 data area and the number in the yield in the second subset；Map unit, for searching the T with being determined after adjustment in first subset or the yield in the second subsetACorrespondingly Number, by TAIt is mapped in descending RAR TAC.
- A kind of 9. device for receiving Timing Advance, it is characterised in that including：Receiving module, for receiving the accidental access response RAR from base station, and from the timing advance order TAC in the RAR Middle extraction uplink timing advance TA, wherein, the TAIt is data area corresponding to TAC of the base station in the RAR of place cell What adjustment obtained；Parsing module, for all numbers corresponding with the TAC of the data area according to corresponding to the TAC array into set Corresponding relation to obtained TAParsed, to obtain accurate TA。
- 10. device as claimed in claim 9, it is characterised in that the parsing module includes：Search unit, for corresponded in the TAC arrays of all numbers into set in search for the TA；Resolution unit, for searching the TAAfterwards, the T is determinedAThe one-to-one data area of place subset, and in institute State in data area and search and the TAOne-to-one number, to obtain accurate TA。
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| CN201610809532.9A CN107801240A (en) | 2016-09-07 | 2016-09-07 | A kind of method and apparatus for sending, receiving Timing Advance |
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| CN201610809532.9A CN107801240A (en) | 2016-09-07 | 2016-09-07 | A kind of method and apparatus for sending, receiving Timing Advance |
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| CN107801240A true CN107801240A (en) | 2018-03-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019191988A1 (en) * | 2018-04-04 | 2019-10-10 | 华为技术有限公司 | Random access method and apparatus |
| CN111867041A (en) * | 2019-04-30 | 2020-10-30 | 中国移动通信有限公司研究院 | Timing advance determination method and device |
| CN112291842A (en) * | 2019-07-22 | 2021-01-29 | 华为技术有限公司 | Communication method and device |
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| EP4068868A4 (en) * | 2019-11-29 | 2022-11-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Random access method and apparatus, network device, terminal, and storage medium |
| WO2023011522A1 (en) * | 2021-08-03 | 2023-02-09 | 展讯半导体(南京)有限公司 | Data transmission method and related apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019191988A1 (en) * | 2018-04-04 | 2019-10-10 | 华为技术有限公司 | Random access method and apparatus |
| CN111867041A (en) * | 2019-04-30 | 2020-10-30 | 中国移动通信有限公司研究院 | Timing advance determination method and device |
| WO2020221127A1 (en) * | 2019-04-30 | 2020-11-05 | 中国移动通信有限公司研究院 | Timing advance determination method and device |
| CN111867041B (en) * | 2019-04-30 | 2022-01-25 | 中国移动通信有限公司研究院 | Timing advance determination method and device |
| CN112291842A (en) * | 2019-07-22 | 2021-01-29 | 华为技术有限公司 | Communication method and device |
| CN112584484A (en) * | 2019-09-30 | 2021-03-30 | 华为技术有限公司 | Signal sending and processing method and device |
| CN112584484B (en) * | 2019-09-30 | 2022-06-07 | 华为技术有限公司 | Signal sending and processing method and device |
| EP4068868A4 (en) * | 2019-11-29 | 2022-11-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Random access method and apparatus, network device, terminal, and storage medium |
| WO2023011522A1 (en) * | 2021-08-03 | 2023-02-09 | 展讯半导体(南京)有限公司 | Data transmission method and related apparatus |
| CN116506968A (en) * | 2023-06-21 | 2023-07-28 | 极芯通讯技术(南京)有限公司 | Link time offset determination method and device and electronic equipment |
| CN116506968B (en) * | 2023-06-21 | 2023-11-03 | 极芯通讯技术(南京)有限公司 | Link time offset determination method and device and electronic equipment |
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Application publication date: 20180313 |