CN103841578A - Method and base station for determining timing advance between user equipment and RRHs - Google Patents
Method and base station for determining timing advance between user equipment and RRHs Download PDFInfo
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- CN103841578A CN103841578A CN201210489382.XA CN201210489382A CN103841578A CN 103841578 A CN103841578 A CN 103841578A CN 201210489382 A CN201210489382 A CN 201210489382A CN 103841578 A CN103841578 A CN 103841578A
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Abstract
The invention provides a method and base station for determining the timing advance between user equipment and remote radio heads (RRH). The method comprises the steps of acquiring the time offset of each RRH relative to the user equipment, selecting an RRH the service state information of which meets a preset condition from the multiple RRHs to serve as a standard RRH according to the service state information of all the RRHs, determining the timing advance between the standard RRH and the user equipment according to the time offset of the standard RRH, and updating the window offset of receiving windows of all the other RRHs according to the time offset of the standard RRH and the time offset of all the other RRHs. The method and base station have the advantages that time offset does not exist between the user equipment and the RRHs any more, and then the services of the RRHs are more accurate, and the overall performance of the base station is improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to method and the base station of the Timing Advance between a kind of definite subscriber equipment and radio frequency extension apparatus.
Background technology
Timing Advance (Time Advance) is used to make subscriber equipment to synchronize with base station.Subscriber equipment is adjusted the time started of its up link according to obtained Timing Advance.In a logic district, if subscriber equipment is associated with two radio frequency extension apparatus (Remote RadioHead) simultaneously, because the states different and channel of the distance between subscriber equipment and two RRH are different, the Timing Advance between subscriber equipment and two RRH is also different.And because subscriber equipment can not come to synchronize with two RRH according to Timing Advance order simultaneously, therefore this is the problem that needs solve.
In prior art, two RRH are often ignored and are positioned at the fact of diverse location in base station, and the simple Timing Advance that the mean value of the Timing Advance respectively and between two RRH uses in the time that subscriber equipment is synchronizeed using subscriber equipment only.But the problem that this mode causes is: one is life period deviation still between subscriber equipment and two RRH, and another is to reduce the overall performance of base station.
Summary of the invention
The object of this invention is to provide method and the base station of the Timing Advance between a kind of definite subscriber equipment and radio frequency extension apparatus.
According to an aspect of the present invention, provide the method for the Timing Advance between a kind of definite subscriber equipment and RRH, wherein, when subscriber equipment is when being associated corresponding to multiple RRH of same base station, said method comprising the steps of:
-obtain respectively the time offset of each RRH with respect to described subscriber equipment;
Wherein, described method is further comprising the steps of:
A is according to the service status information of each RRH, selects RRH that service status information meets predetermined condition as benchmark RRH from described multiple RRH;
B determines the described benchmark RRH Timing Advance corresponding with described subscriber equipment according to the time offset of described benchmark RRH;
Wherein, described method also comprises:
C, according to the time offset of the time offset of described benchmark RRH and other each RRH, upgrades respectively the window offset amount of the receive window of described other each RRH.
According to an aspect of the present invention, also provide the base station of the Timing Advance between a kind of definite subscriber equipment and RRH, wherein, when subscriber equipment is when being associated corresponding to multiple RRH of same base station, described base station comprises:
The first acquisition device, for obtaining respectively the time offset of each RRH with respect to described subscriber equipment;
Choice device for according to the service status information of each RRH, selects RRH that service status information meets predetermined condition as benchmark RRH from described multiple RRH;
Determining device, for determining the described benchmark RRH Timing Advance corresponding with described subscriber equipment according to the time offset of described benchmark RRH;
Updating device, for according to the time offset of the time offset of described benchmark RRH and other each RRH, upgrades respectively the window offset amount of the receive window of described other each RRH.
Compared with prior art, the present invention has the following advantages: the method according to this invention, by subscriber equipment is synchronizeed with benchmark RRH, and the window offset amount of the receive window of other RRH is adjusted according to benchmark RRH, make between subscriber equipment and each RRH all no longer life period deviation, thereby make the service of each RRH more accurate, improved the overall performance of base station.
Brief description of the drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 has illustrated according to the method for the Timing Advance between a kind of definite subscriber equipment of the present invention and radio frequency extension apparatus;
Fig. 2 has illustrated according to the structural representation of the base station of the Timing Advance between a kind of definite subscriber equipment of the present invention and radio frequency extension apparatus;
Fig. 3 has illustrated the system schematic that comprises subscriber equipment and radio frequency extension apparatus according to a preferred embodiment of the present invention;
Fig. 4 has illustrated the system schematic that comprises subscriber equipment and radio frequency extension apparatus according to a further advantageous embodiment of the invention;
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 has illustrated that one according to the present invention determines the method for the Timing Advance between subscriber equipment and radio frequency extension apparatus (RRH, Remote Radio Head).Wherein, adopt according to base station of the present invention the Remote Radio Technique that comprises multiple radio frequency extension apparatus.
When subscriber equipment is when being associated corresponding to multiple RRH of same base station, the method according to this invention comprises step S1, step S2, step S3 and step S4.Wherein, the described radio frequency extension apparatus being associated with subscriber equipment comprises the radio frequency extension apparatus that service is provided for this subscriber equipment.
With reference to Fig. 1, in step S1, base station obtains respectively the time offset (time offset) of each radio frequency extension apparatus with respect to described subscriber equipment.
Wherein, those skilled in the art should obtain the method for radio frequency extension apparatus with respect to the time offset of subscriber equipment according to actual conditions and Location of requirement base station, repeat no more herein.
In step S2, base station is according to the service status information of each radio frequency extension apparatus, selects radio frequency extension apparatus that service status information meets predetermined condition as benchmark radio frequency extension apparatus from described multiple radio frequency extension apparatus.
Wherein, described service status information is used to indicate each radio frequency extension apparatus and provides the quality of the performance in when service for described subscriber equipment.
Preferably, described service status information includes but not limited to following at least any one:
1) received energy (Receiving Energy);
2) time offset (Time Offset).Wherein, those skilled in the art should understand, and in the time adopting time offset to be used as the service status information of each RRH, the present invention is applicable to affecting the operation of subscriber equipment in the scene of the time offset with respect to this subscriber equipment of each RRH.
Wherein, described predetermined condition is for selecting the radio frequency extension apparatus as benchmark according to service status information.Preferably, described predetermined condition includes but not limited to the radio frequency extension apparatus of service status information optimum.For example, predetermined condition comprises the radio frequency extension apparatus of received energy maximum; Again for example, predetermined condition comprises the radio frequency extension apparatus of time deviation amount minimum.
Preferably, described predetermined condition also can comprise service status information suboptimum or the 3rd excellent video extension apparatus etc.
Preferably, described service status information comprises received energy, and described step S2 comprises step S21 (not shown).
In step S21, base station is according to the received energy of each radio frequency extension apparatus, selects radio frequency extension apparatus that described received energy meets predetermined condition as benchmark radio frequency extension apparatus.
According to the first example of the present invention, with reference to Fig. 3, radio frequency extension apparatus R1, R2 and R3 are all corresponding to same base station, now user equipment (UE) 1 just moves to from the region being only associated with R2 and these three radio frequency extension apparatus R1, R2 and R3 be the region of association all, base station obtains R1 in step S 1, R2 and R3 three are respectively 16ts with respect to the time offset of user equipment (UE) 1 separately, 2 × 16ts, 4 × 16ts, wherein, in this example, the ts of unit of time offset is based on the defined basic time unit of 3GPP TS 36.211 (basic time unit).And the service status information of radio frequency extension apparatus comprises received energy, predetermined condition comprises the radio frequency extension apparatus of received energy maximum.Base station is in step S2, and according to the received energy of each radio frequency extension apparatus, the radio frequency extension apparatus R2 of selective reception energy maximum is as benchmark radio frequency extension apparatus.
It should be noted that there is no sequencing relation between step S1 and step S2, base station can first perform step S1, then performs step S2, or first performs step S2, then performs step S1, or performs step S1 and step S2 simultaneously.
Then,, in step S3, the described benchmark radio frequency extension apparatus Timing Advance corresponding with described subscriber equipment determined according to the time offset of described benchmark radio frequency extension apparatus in base station.
Preferably, the Timing Advance of base station using the window offset amount sum of the time offset of described benchmark radio frequency extension apparatus and receive window (Receiving Window) thereof as described benchmark radio frequency extension apparatus and described subscriber equipment.
More preferably, the window offset amount of the receive window of described benchmark radio frequency extension apparatus is 1 o'clock, the Timing Advance using the time offset of described base station radio frequency remoter device between described base station radio frequency remoter device and described subscriber equipment; In the time that the window offset amount of the receive window of described benchmark radio frequency extension apparatus is non-vanishing, described base station after execution step S3 by the window offset amount zero setting of described benchmark radio frequency extension apparatus.
Preferably, the window offset amount of setting up associated subscriber equipment with radio frequency extension apparatus first is all preset as zero.
Continue aforementioned the first example to describe, because UE1 is before entering the region being associated with three radio frequency extension apparatus R1, R2 and R3, only be associated with radio frequency extension apparatus R2, therefore, now the window offset amount of radio frequency extension apparatus R1 and R3 is zero, and owing to only carrying out and synchronizeing according to R2 in the time being only associated with radio frequency extension apparatus R2, therefore now user equipment (UE) 1 is also zero with respect to the window offset amount of radio frequency extension apparatus.Base station is using time offset 2 × 16ts of benchmark radio frequency extension apparatus R2 as the benchmark radio frequency extension apparatus R2 Timing Advance corresponding with user equipment (UE) 1, that is definite benchmark radio frequency extension apparatus R2 Timing Advance corresponding with user equipment (UE) 1 is 2 × 16ts.
In step S4, the window offset amount of the receive window of described other each radio frequency extension apparatus, according to the time offset of the time offset of described benchmark radio frequency extension apparatus and other each radio frequency extension apparatus, is upgraded respectively in base station.
Particularly, the window offset amount of the receive window of described other each radio frequency extension apparatus, according to the time offset of the time offset of described benchmark radio frequency extension apparatus, other each radio frequency extension apparatus and window offset amount, is upgraded respectively in base station.
Preferably, base station obtains respectively the difference between the described time offset of other each radio frequency extension apparatus and the time offset of described benchmark radio frequency extension apparatus, and the new window offset amount using described difference and the current window offset amount sum of described other each radio frequency extension apparatus as described other each radio frequency extension apparatus respectively.
Wherein, the difference of base station between can time offset and the time offset of described benchmark radio frequency extension apparatus of other radio frequency extension apparatus of every acquisition, upgrade the window offset amount of these other radio frequency extension apparatus according to this difference, or, base station can first obtain the difference between the time offset of multiple other radio frequency extension apparatus and the time offset of described benchmark radio frequency extension apparatus, and upgrades its window offset amount according to the difference of each radio frequency extension apparatus one by one.
Preferably, the new window offset amount of each other radio frequency extension apparatus is determined in base station according to following formula:
New window offset amount=R_window_offset+R_Offset-R_base_Offset;
Wherein, R_window_offset is the window offset amount before these other radio frequency extension apparatus do not upgrade, R_Offset is the time offset of the radio frequency extension apparatus self of window offset amount to be updated, and R_base_Offset is the time offset of benchmark radio frequency extension apparatus.
Continue aforementioned the first example to describe, wherein, the time offset of other radio frequency extension apparatus R1 and R2 is respectively 16ts and 4 × 16ts, its window offset amount is 0ts, base station is according to formula: new window offset amount=R_window_offset+R_Offset-R_base_Offset, determines new window offset amount=0ts+16ts-2 × 16ts=-16s of radio frequency extension apparatus R1; New window offset amount=0ts+4 × 16ts-2 × 16ts=2 × 16ts of radio frequency extension apparatus R2.
Then, with reference to Fig. 4, continue aforementioned the first example to describe, user equipment (UE) 1 moves to the position shown in Fig. 4 from the position of aforementioned Fig. 3, now, user equipment (UE) 1 is still associated with radio frequency extension apparatus R1, R2 and R3 corresponding to same base station, and its corresponding be respectively-16ts of window offset amount, 0ts, 2 × 16ts.Now, base station obtains each radio frequency extension apparatus R1, R2 in step S 1 and R3 is respectively 2 × 16ts, 3 × 16ts and 16ts with respect to the time offset of user equipment (UE) 1, and, base station received energy according to each radio frequency extension apparatus still in step S2, selects the radio frequency extension apparatus R1 of received energy maximum now as benchmark radio frequency extension apparatus.Base station in step S3 according to both sum 16ts of the window offset amount-16ts of time offset 2 × 16ts of radio frequency extension apparatus R1 and receive window thereof as the Timing Advance between benchmark radio frequency extension apparatus R1 and user equipment (UE) 1.And current window offset amount-16ts of base station judgment standard radio frequency extension apparatus R1 is non-vanishing, after execution step S3, by the window offset amount zero setting of benchmark radio frequency extension apparatus R1.And new window offset amount=0ts+3 × 16ts-16ts=2 × 16ts of radio frequency extension apparatus R2, in step S4, according to aforementioned formula, is determined in base station; New window offset amount=2 × 16ts+16ts-16ts=2 × 16ts of radio frequency extension apparatus R3.
It should be noted that, between step S3 and step S4, there is no sequencing relation, both only need carry out respectively after step S1 and step S2, base station can first perform step S3, perform step again S4, or first perform step S4, then perform step S3, or perform step S3 and step S4 simultaneously.
Preferably, the method according to this invention also comprises step S5 (not shown).
In step S5, described Timing Advance is sent to described subscriber equipment by base station.
Particularly, base station is contained in described Timing Advance in Timing Advance order (TimeAdvance command) and is sent to subscriber equipment, and the Timing Advance for subscriber equipment based on is wherein carried out simultaneous operation.
More preferably, in the time that described Timing Advance is non-vanishing, described Timing Advance is sent to described subscriber equipment by base station.
The method according to this invention, by subscriber equipment is synchronizeed with benchmark RRH, and the window offset amount of the receive window of other RRH is adjusted according to benchmark RRH, make between subscriber equipment and each RRH all no longer life period deviation, thereby make the service of each RRH more accurate, improved the overall performance of base station.
Fig. 2 has illustrated according to the structural representation of the base station of the Timing Advance between a kind of definite subscriber equipment of the present invention and radio frequency extension apparatus.Wherein, adopt according to base station of the present invention the Remote Radio Technique that comprises multiple radio frequency extension apparatus.
When subscriber equipment is when being associated corresponding to multiple RRH of same base station, base station according to the present invention comprises the first acquisition device 1, choice device 2, determining device 3 and updating device 4.Wherein, the described radio frequency extension apparatus being associated with subscriber equipment comprises the radio frequency extension apparatus that service is provided for this subscriber equipment.
With reference to Fig. 2, the first acquisition device 1 obtains respectively the time offset (time offset) of each radio frequency extension apparatus with respect to described subscriber equipment.
Wherein, those skilled in the art should obtain the method for radio frequency extension apparatus with respect to the time offset of subscriber equipment according to actual conditions and Location of requirement, repeat no more herein.
Wherein, described service status information is used to indicate each radio frequency extension apparatus and provides the quality of the performance in when service for described subscriber equipment.
Preferably, described service status information includes but not limited to following at least any one:
1) received energy (Receiving Energy);
2) time offset (Time Offset).Wherein, those skilled in the art should understand, and in the time adopting time offset to be used as the service status information of each RRH, the present invention is applicable to affecting the operation of subscriber equipment in the scene of the time offset with respect to this subscriber equipment of each RRH.
Wherein, described predetermined condition is for selecting the radio frequency extension apparatus as benchmark according to service status information.Preferably, described predetermined condition includes but not limited to the radio frequency extension apparatus of service status information optimum.For example, predetermined condition comprises the radio frequency extension apparatus of received energy maximum; Again for example, predetermined condition comprises the radio frequency extension apparatus of time deviation amount minimum.
Preferably, described predetermined condition also can comprise service status information suboptimum or the 3rd excellent video extension apparatus etc.
Preferably, described service status information comprises received energy, and described choice device 2 is for according to the received energy of each radio frequency extension apparatus, selects radio frequency extension apparatus that described received energy meets predetermined condition as benchmark radio frequency extension apparatus.
According to the first example of the present invention, with reference to Fig. 3, radio frequency extension apparatus R1, R2 and R3 are all corresponding to same base station (not shown), now user equipment (UE) 1 just moves to from the region being only associated with R2 and these three radio frequency extension apparatus R1, R2 and R3 be the region of association all, the first acquisition device 1 obtains R1, R2 and R3 three are respectively 16ts with respect to the time offset of user equipment (UE) 1 separately, 2 × 16ts, 4 × 16ts, wherein, in this example, the ts of unit of time offset is based on the defined basic time unit of 3GPP TS 36.211 (basic time unit).And the service status information of radio frequency extension apparatus comprises received energy, predetermined condition comprises the radio frequency extension apparatus of received energy maximum.Choice device 2 is according to the received energy of each radio frequency extension apparatus, and the radio frequency extension apparatus R2 of selective reception energy maximum is as benchmark radio frequency extension apparatus.
It should be noted that, the first acquisition device 1 does not have sequencing with the execution of choice device 2.
Then, determining device 3 is determined the described benchmark radio frequency extension apparatus Timing Advance corresponding with described subscriber equipment according to the time offset of described benchmark radio frequency extension apparatus.
Preferably, the Timing Advance of determining device 3 using the window offset amount sum of the time offset of described benchmark radio frequency extension apparatus and receive window (Receiving Window) thereof as described benchmark radio frequency extension apparatus and described subscriber equipment.
More preferably, the window offset amount of the receive window of described benchmark radio frequency extension apparatus is 1 o'clock, and determining device 3 is the Timing Advance between described base station radio frequency remoter device and described subscriber equipment using the time offset of described base station radio frequency remoter device; In the time that the window offset amount of the receive window of described benchmark radio frequency extension apparatus is non-vanishing, described base station is also included in the setting device (not shown) of carrying out after determining device, by this setting device by the window offset amount zero setting of described benchmark radio frequency extension apparatus.
Preferably, the window offset amount of setting up associated subscriber equipment with radio frequency extension apparatus first is all preset as zero.
Continue aforementioned the first example to describe, because UE1 is before entering the region being associated with three radio frequency extension apparatus R1, R2 and R3, only be associated with radio frequency extension apparatus R2, therefore, now the window offset amount of radio frequency extension apparatus R1 and R3 is zero, and, due in the time being only associated with radio frequency extension apparatus R2 only according to R2 carry out synchronize, so time user equipment (UE) 1 be also zero with respect to the window offset amount of radio frequency extension apparatus.Determining device 3 is using time offset 2 × 16ts of benchmark radio frequency extension apparatus R2 as the benchmark radio frequency extension apparatus R2 Timing Advance corresponding with user equipment (UE) 1, that is determining device 3 determines that the benchmark radio frequency extension apparatus R2 Timing Advance corresponding with user equipment (UE) 1 is 2 × 16ts.
Updating device 4, according to the time offset of the time offset of described benchmark radio frequency extension apparatus and other each radio frequency extension apparatus, upgrades respectively the window offset amount of the receive window of described other each radio frequency extension apparatus.
Particularly, updating device 4, according to the time offset of the time offset of described benchmark radio frequency extension apparatus, other each radio frequency extension apparatus and window offset amount, upgrades respectively the window offset amount of the receive window of described other each radio frequency extension apparatus.
Preferably, the second acquisition device (not shown) in updating device 4 is obtained respectively the difference between the described time offset of other each radio frequency extension apparatus and the time offset of described benchmark radio frequency extension apparatus, and the sub-determining device (not shown) in updating device 4 is the new window offset amount using described difference and the current window offset amount sum of described other each radio frequency extension apparatus as described other each radio frequency extension apparatus respectively.
Wherein, difference between time offset and the time offset of described benchmark radio frequency extension apparatus of other radio frequency extension apparatus of the every acquisition of updating device 4, upgrade the window offset amount of these other radio frequency extension apparatus according to this difference, or, updating device 4 first obtains the difference between the time offset of multiple other radio frequency extension apparatus and the time offset of described benchmark radio frequency extension apparatus, and upgrades its window offset amount according to the difference of each radio frequency extension apparatus one by one.
Preferably, updating device 4 is determined the new window offset amount of each other radio frequency extension apparatus according to following formula:
New window offset amount=R_window_offset+R_Offset-R_base_Offset;
Wherein, R_window_offset is the window offset amount before these other radio frequency extension apparatus do not upgrade, R_Offset is the time offset of the radio frequency extension apparatus self of window offset amount to be updated, and R_base_Offset is the time offset of benchmark radio frequency extension apparatus.
Continue aforementioned the first example to describe, wherein, the time offset of other radio frequency extension apparatus R1 and R2 is respectively 16ts and 4 × 16ts, its window offset amount is 0ts, updating device 4 is according to formula: new window offset amount=R_window_offset+R_Offset-R_base_Offset, determines new window offset amount=0ts+16ts-2 × 16ts=-16ts of radio frequency extension apparatus R1; New window offset amount=0ts+4 × 16ts-2 × 16ts=2 × 16ts of radio frequency extension apparatus R2.
Then, with reference to Fig. 4, continue aforementioned the first example to describe, user equipment (UE) 1 moves to the position shown in Fig. 4 from the position of aforementioned Fig. 3, now, user equipment (UE) 1 is still associated with radio frequency extension apparatus R1, R2 and R3 corresponding to same base station, and its corresponding be respectively-16ts of window offset amount, 0ts, 2 × 16ts.Now, each radio frequency extension apparatus R1, R2 and R3 that the first acquisition device 1 obtains are respectively 2 × 16ts, 3 × 16ts and 16ts with respect to the time offset of user equipment (UE) 1, and, choice device 2 is still according to the received energy of each radio frequency extension apparatus, selects the radio frequency extension apparatus R1 of received energy maximum now as benchmark radio frequency extension apparatus.Determining device 3 according to both sum 16ts of the window offset amount-16ts of time offset 2 × 16ts of radio frequency extension apparatus R1 and receive window thereof as the Timing Advance between benchmark radio frequency extension apparatus R1 and user equipment (UE) 1.And current window offset amount-16ts of base station judgment standard radio frequency extension apparatus R1 is non-vanishing, setting device executes after operation in determining device 3, by the window offset amount zero setting of benchmark radio frequency extension apparatus R1.And updating device 4, according to aforementioned formula, is determined new window offset amount=0ts+3 × 16ts-16ts=2 × 16ts of radio frequency extension apparatus R2; New window offset amount=2 × 16ts+16ts-16ts=2 × 16ts of radio frequency extension apparatus R3.
It should be noted that, determining device 3 does not have sequencing with the execution of updating device 4, both only need execution after the first acquisition device 1 and choice device 2 are finished.
Preferably, also comprise dispensing device (not shown) according to base station of the present invention.
Described Timing Advance is sent to described subscriber equipment by dispensing device.
Particularly, dispensing device is contained in described Timing Advance in Timing Advance order (TimeAdvance command) and is sent to subscriber equipment, and the Timing Advance for subscriber equipment based on is wherein carried out simultaneous operation.
More preferably, in the time that described Timing Advance is non-vanishing, described Timing Advance is sent to described subscriber equipment by dispensing device.
According to the solution of the present invention, by subscriber equipment is synchronizeed with benchmark RRH, and the window offset amount of the receive window of other RRH is adjusted according to benchmark RRH, make between subscriber equipment and each RRH all no longer life period deviation, thereby make the service of each RRH more accurate, improved the overall performance of base station.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to be included in the present invention.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.Multiple unit of stating in system claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (12)
1. a method for the Timing Advance between definite subscriber equipment and RRH, wherein, when subscriber equipment is when being associated corresponding to multiple RRH of same base station, said method comprising the steps of:
-obtain respectively the time offset of each RRH with respect to described subscriber equipment;
Wherein, described method is further comprising the steps of:
A is according to the service status information of each RRH, selects RRH that service status information meets predetermined condition as benchmark RRH from described multiple RRH;
B determines the described benchmark RRH Timing Advance corresponding with described subscriber equipment according to the time offset of described benchmark RRH;
Wherein, described method also comprises:
C, according to the time offset of the time offset of described benchmark RRH and other each RRH, upgrades respectively the window offset amount of the receive window of described other each RRH.
2. method according to claim 1, wherein, described step b comprises the following steps:
-Timing Advance using the window offset amount sum of the time offset of described benchmark RRH and receive window thereof as described benchmark RRH and described subscriber equipment.
3. method according to claim 1 and 2, wherein, in the time that the window offset amount of the receive window of described benchmark RRH is non-vanishing, described method is further comprising the steps of after step b:
-by the window offset amount zero setting of described benchmark RRH.
4. according to the method in any one of claims 1 to 3, wherein, described step c comprises the following steps:
-obtain respectively the difference between the described time offset of other each RRH and the time offset of described benchmark RRH;
-new window offset the amount using described difference and the current window offset amount sum of described other each RRH as described other each RRH respectively.
5. according to the method described in any one in claim 1 to 4, wherein, described method is further comprising the steps of:
-described Timing Advance is sent to described subscriber equipment.
6. according to the method described in any one in claim 1 to 5, wherein, described service status information comprises received energy, and described step a comprises the following steps:
-according to the received energy of each RRH, select RRH that described received energy meets predetermined condition as benchmark RRH.
7. a base station for the Timing Advance between definite subscriber equipment and RRH, wherein, when subscriber equipment is when being associated corresponding to multiple RRH of same base station, described base station comprises:
The first acquisition device, for obtaining respectively the time offset of each RRH with respect to described subscriber equipment;
Choice device for according to the service status information of each RRH, selects RRH that service status information meets predetermined condition as benchmark RRH from described multiple RRH;
Determining device, for determining the described benchmark RRH Timing Advance corresponding with described subscriber equipment according to the time offset of described benchmark RRH;
Updating device, for according to the time offset of the time offset of described benchmark RRH and other each RRH, upgrades respectively the window offset amount of the receive window of described other each RRH.
8. base station according to claim 7, wherein, described determining device is used for:
-Timing Advance using the window offset amount sum of the time offset of described benchmark RRH and receive window thereof as described benchmark RRH and described subscriber equipment.
9. according to the base station described in claim 7 or 8, wherein, in the time that the window offset amount of the receive window of described benchmark RRH is non-vanishing, described base station also comprises:
The setting device of carrying out after described determining device, for by the window offset amount zero setting of described benchmark RRH.
10. according to the base station described in any one in claim 7 to 9, wherein, described updating device comprises:
The second acquisition device, for obtaining respectively the difference between the described time offset of other each RRH and the time offset of described benchmark RRH;
Sub-determining device, for the new window offset amount using described difference and the current window offset amount sum of described other each RRH as described other each RRH respectively.
11. according to the base station described in any one in claim 7 to 10, and wherein, described base station also comprises:
Dispensing device, for being sent to described subscriber equipment by described Timing Advance.
12. according to the base station described in any one in claim 7 to 11, and wherein, described service status information comprises received energy, and described choice device is used for:
-according to the received energy of each RRH, select RRH that described received energy meets predetermined condition as benchmark RRH.
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| CN105227271A (en) * | 2014-06-06 | 2016-01-06 | 北京信威通信技术股份有限公司 | The exclusive RRH set option method of a kind of terminal |
| CN107124758A (en) * | 2016-02-25 | 2017-09-01 | 大唐移动通信设备有限公司 | A kind of method and device for realizing synchronization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105227271A (en) * | 2014-06-06 | 2016-01-06 | 北京信威通信技术股份有限公司 | The exclusive RRH set option method of a kind of terminal |
| CN105227271B (en) * | 2014-06-06 | 2018-09-11 | 北京信威通信技术股份有限公司 | A kind of exclusive RRH set option methods of terminal |
| CN107124758A (en) * | 2016-02-25 | 2017-09-01 | 大唐移动通信设备有限公司 | A kind of method and device for realizing synchronization |
| CN107124758B (en) * | 2016-02-25 | 2019-11-19 | 大唐移动通信设备有限公司 | It is a kind of to realize synchronous method and device |
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