CN102055520B - Method and device for compensating uplink signal - Google Patents
Method and device for compensating uplink signal Download PDFInfo
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- CN102055520B CN102055520B CN200910221164.6A CN200910221164A CN102055520B CN 102055520 B CN102055520 B CN 102055520B CN 200910221164 A CN200910221164 A CN 200910221164A CN 102055520 B CN102055520 B CN 102055520B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
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Abstract
The invention provides a method and device for compensating an uplink signal. The method comprises the steps of: determining a time slot of a first base station needing frequency correction channel (FCCH) detection; when the relevant information of a slow associated control channel (SACCH) is lost in the time slot, replacing the lost relevant information of the SACCH by adopting newly stored relevant information of the SACCH; and/or, when the measurement information of an idle channel is lost in the time slot, replacing the lost measurement information of the idle channel by adopting the newly stored measurement information of the idle channel. According to the technical scheme provided by the invention, the lost data and the lost measurement reports of the SACCH can be effectively compensated and the adverse effect brought by the loss is reduced.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of compensation method and device of upward signal.
Background technology
The downstream signal of other base stations received in network except this base station can be used in a communications system, using the downstream signal of other base stations as benchmark, the method for fair copy base station working frequency.When base station adopts such scheme to realize frequency calibration, owing to needing the downlink signal using this base station ascending time slot receiving target Reference BTS, base station normal upstream signal and the measurement to normal upward signal thus can be lost.
If ignore the loss to upward signal, or the loss that upward signal is measured, the erroneous judgement to up-link wireless quality can be produced in systems in which, thus the stability of meeting influential system.
Number of patent application is the method that 200810176410.6 " a kind of GSM base station crystal oscillator online frequency deviation correcting method specifications " describe a kind of base station on-line calibration, use the downlink signal of this base station ascending time slot receiving target Reference BTS, exist and lose up slow associated control channel (Slow Associated Control Channel, referred to as SACCH) defect of data and measurement report, thus the chain index of system to be measured and the stability of a system can have a negative impact.
For the downlink signal using this base station ascending time slot receiving target Reference BTS in correlation technique, there is the problem of losing up SACCH data and measurement report, not yet propose effective solution at present.
Summary of the invention
For the downlink signal using this base station ascending time slot receiving target Reference BTS in correlation technique, there is the problem of the up SACCH data of loss and measurement report and propose the present invention, for this reason, main purpose of the present invention is the compensation method and the device that provide a kind of upward signal, to solve the problem one of at least.
According to an aspect of the present invention, a kind of compensation method of upward signal is provided.
Compensation method according to upward signal of the present invention comprises: determine that the first base station needs to carry out the time period of frequency correction channel FCCH detection; When time period internal loss slow associated control channel SACCH relevant information, adopt the SACCH relevant information that the SACCH relevant information of up-to-date preservation replaces this to lose; And/or, when when time period internal loss idle channel metrical information, adopt the idle channel metrical information that the idle channel metrical information of up-to-date preservation replaces this to lose.
Preferably, SACCH relevant information comprises: the SACCH decoded result be correctly decoded, up channel metrical information.
Preferably, before the SACCH relevant information adopting the SACCH relevant information of up-to-date preservation to replace this to lose, the method comprises: obtain the SACCH decoded result and up channel metrical information that are correctly decoded; The SACCH decoded result be correctly decoded utilizing this to get upgrades the last SACCH decoded result be correctly decoded preserved, and the up channel metrical information utilizing this to get upgrades last up channel metrical information of preserving.
Preferably, before the idle channel measurement result adopting the idle channel measurement result of up-to-date preservation to replace this to lose, the method comprises: obtain idle channel metrical information; The idle channel metrical information that utilizes this to get upgrade last preserve idle channel metrical information.
Preferably, above-mentionedly determine that the first base station needs the time period of carrying out FCCH detection to comprise: when the first base station and the second base station synchronization, determine that the first base station needs to carry out the time period of FCCH detection according to the positional information of the second Base Transmitter downstream signal; Determine that the first base station needs to carry out the channel of FCCH detection and the call number of frame according to the time period.
Preferably, after determining that the first base station needs the time period of carrying out FCCH detection, before the SACCH relevant information adopting the SACCH relevant information of up-to-date preservation to replace this to lose, the method also comprises: when identify there is occupied frame in SACCH decoding periods, the channel belonging to occupied frame and this frame is identified.
Preferably, after determining that the first base station needs the time period of carrying out FCCH detection, before the idle channel metrical information adopting the idle channel metrical information of up-to-date preservation to replace this to lose, method also comprises: when identify there is occupied frame in idle condition measuring period, the channel belonging to occupied frame and this frame is identified.
According to a further aspect in the invention, a kind of compensation arrangement of upward signal is provided.
Compensation arrangement according to upward signal of the present invention comprises: determining unit, for determining that the first base station needs to carry out the time period of frequency correction channel FCCH detection; Compensating unit, for when time period internal loss slow associated control channel SACCH relevant information, adopt the SACCH relevant information that the SACCH relevant information of up-to-date preservation replaces this to lose, and/or, when time period internal loss idle channel metrical information, adopt the idle channel metrical information that the idle channel metrical information of up-to-date preservation replaces this to lose.
Preferably, said apparatus also comprises: acquiring unit, for obtaining the SACCH decoded result and up channel metrical information that are correctly decoded; Updating block, the SACCH decoded result be correctly decoded got for utilizing this upgrades the last SACCH decoded result be correctly decoded preserved, and the up channel metrical information utilizing this to get upgrades last up channel metrical information of preserving.
Preferably, acquiring unit, also for obtaining idle channel metrical information; Updating block, the idle channel metrical information also for utilizing this to get upgrade last preserve idle channel metrical information.
Preferably, determining unit comprises: the first determination module, for when the first base station and the second base station synchronization, determines that the first base station needs to carry out the time period of FCCH detection according to the positional information of the second Base Transmitter downstream signal; Second determination module, for the time period exported according to the first determination module, determines that the first base station needs to carry out the channel of FCCH detection and the call number of frame.
Preferably, said apparatus also comprises: identify unit, for when identify there is occupied frame in SACCH decoding periods, the channel belonging to occupied frame and this frame is identified.
Preferably, identify unit, also for when identify there is occupied frame in idle condition measuring period, the channel belonging to occupied frame and this frame is identified.
Pass through the present invention, carrying out target frequency correction channel (Frequency CorrectionChannel, referred to as FCCH) channel measurement be when all can lose some SACCH information and IDLE channel measurement information, adopts the prior measurements preserved to compensate the SACCH information of loss and up channel measurement parameter.Solve in correlation technique the downlink signal using this base station ascending time slot receiving target Reference BTS, there is the problem of losing up SACCH data and measurement report, and then can effective compensation lose SACCH data and measurement report, reduce the adverse effect that above-mentioned loss brings.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the compensation method of upward signal according to the embodiment of the present invention;
Fig. 2 (a) is the structural representation of the logical channel combination of TCH channel in the gsm system according to the embodiment of the present invention;
Fig. 2 (b) is the structural representation of the logical channel combination of TCH channel in gsm system according to another embodiment of the present invention;
Fig. 3 is configured to the frame structure schematic diagram that 0 time slot in TCH channel is IDLE frame in the gsm system according to the embodiment of the present invention;
Fig. 4 is the schematic diagram of the compensation method of upward signal according to the preferred embodiment of the invention;
Fig. 5 is the flow chart of the compensation method of upward signal according to the preferred embodiment of the invention;
Fig. 6 is the structured flowchart of the compensation arrangement of upward signal according to the embodiment of the present invention;
Fig. 7 is the structured flowchart of the compensation arrangement of upward signal according to the preferred embodiment of the invention.
Embodiment
Function was both stated
The present invention proposes a kind of method of compensating of upward signal (up SACCH and measurement report) to losing and device, confirm the time period (frame number) of carrying out needed for FCCH, cannot correctly demodulation owing to having that BURST loses to the SACCH channel of loss, adopt the information of a SACCH cycle correct demodulation and out-hole run result to replace this measurement result to compensate.Equally, measure the up channel measurement result in also employing IDLE moment last time to the IDLE time slot of loss to compensate.
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment of the method
According to embodiments of the invention, provide a kind of compensation method of upward signal.
Fig. 1 is the flow chart of the compensation method of upward signal according to the embodiment of the present invention.As shown in Figure 1, following process (step S101-step S103) is comprised according to the compensation method of the upward signal of the embodiment of the present invention:
Step S101: determine that the first base station needs to carry out the time period of FCCH detection;
Wherein, above-mentioned first base station is for needing the base station of the downstream signal correction work frequency utilizing the second base station (can be described as target BS) to launch.
Preferably, step S101 may further include following process:
(1) when the first base station and the second base station synchronization, determine that the first base station needs to carry out the time period of FCCH detection according to the positional information of the second Base Transmitter downstream signal;
(2) determine that the first base station needs to carry out the channel of FCCH detection and the call number of frame according to the time period.
In specific implementation process, can adopt the strategy frame structure of the first synchronous base station and the frame structure of the second base station being carried out aliging, the first base station corresponding to position finding out the second Base Transmitter downstream signal needs to carry out the time period (i.e. the call number of channel and frame) of FCCH detection.
After execution step S101, following one of at least process can be performed:
(1) when identify there is occupied frame in SACCH decoding periods, the channel belonging to occupied frame and this frame is identified;
(2) when identify there is occupied frame in idle condition measuring period, the channel belonging to occupied frame and this frame is identified.
Preferably, the mode of data structure can also be adopted by above-mentioned identification information storage in the internal memory of system.
In specific implementation process, when carrying out frequency offset correction online, normal business can not be affected and carry out.Therefore, in business free time section or in the idle frame that business is carried out, frequency offset correction can only be carried out.
Online frequency offset correction utilizes the downlink signal of around other base station (target BS namely above mentioned) to carry out frequency deviation estimation, need the frame position deviation considering this base station and target BS, need to configure multiple time slot and target frequency correction channel (FCCH) is received.
When carrying out FCCH and detecting, the SACCH relevant information that may lose and/or idle channel metrical information.Such as, at global location communication system (Global System ForMobile Communication, referred to as GSM) in the 12nd frame of 26 multi-frames and the 25th frame, the SACCH channel of adjacent time-slots and idle (IDLE) state alternately occur, specifically can see in Fig. 2 (a).Thus, the 12nd frame of 26 multi-frames or the 25th frame is utilized cannot to receive to the SACCH channel realizing online frequency deviation estimation and can make this frame carries.Namely, for the 12nd frame or the 25th frame, some SACCH information and IDLE channel measurement information can all be lost carrying out target FCCH channel measurement at every turn.
As shown in (b) in Fig. 2, for the 12nd frame or the 25th frame, all can lose some SACCH information carrying out target FCCH channel measurement at every turn.
Fig. 3 is configured to the frame structure schematic diagram that 0 time slot in TCH channel is IDLE frame in the gsm system according to the embodiment of the present invention.As shown in Figure 3, in 8 time slots of this IDLE frame, the SACCH channel of adjacent time-slots and idle (IDLE) state alternately occur, thus realizes online frequency deviation and estimate, the SACCH channel that this frame carries also can be made to receive.
Step S103: when when time period internal loss SACCH relevant information, adopt the SACCH relevant information that the SACCH relevant information of up-to-date preservation replaces this to lose; And/or,
Preferably, SACCH relevant information comprises: the SACCH decoded result be correctly decoded, up channel metrical information.
Preferably, before execution step S103, need to be handled as follows:
(1) the SACCH decoded result be correctly decoded and up channel metrical information is obtained;
(2) the SACCH decoded result be correctly decoded utilizing this to get upgrades the last SACCH decoded result be correctly decoded preserved, and the up channel metrical information utilizing this to get upgrades last up channel metrical information of preserving.
Step S105: when when time period internal loss idle channel metrical information, adopt the idle channel metrical information that the idle channel metrical information of up-to-date preservation replaces this to lose.
Preferably, before execution step S105, need to be handled as follows:
(1) idle channel metrical information is obtained;
(2) the idle channel metrical information utilizing this to get upgrades last idle channel metrical information of preserving.
In specific implementation process, the execution of step S103 and step S105 does not have sequencing, and one of being at least performed in step S103 and step S105, if when namely needing to compensate SACCH relevant information, then carry out the compensation of SACCH relevant information, if when needing to compensate idle channel metrical information, then carry out the compensation of idle channel metrical information, both can all be compensated, and also only can compensate one of them.
Fig. 4 is the schematic diagram of the compensation method of upward signal according to the preferred embodiment of the invention.As shown in Figure 4, the compensation method of upward signal comprises following process (step S401-step S409) according to the preferred embodiment of the invention:
Step S401: according to this base station frame number and the strategy that aligns with target BS FCCH, by calculating the up detection FCCH frame number determining this base station (i.e. the first base station above-mentioned);
Step S403: carry out normal upstream process;
Step S405: preserve compensated information (Backup Data);
Step S407: adopt compensated information to replace the upward signal (SACCH relevant information and/or idle channel metrical information) of loss;
Step S409: carry out measurement by the metrical information of preserving and report.
Fig. 5 is the flow chart of the compensation method of upward signal according to the preferred embodiment of the invention.As shown in Figure 5, the compensation method of upward signal comprises following process (step S501-step S509) according to the preferred embodiment of the invention:
Step S501: the up detection FCCH frame number determining this base station (i.e. the first base station above-mentioned);
In specific implementation process, when base station is synchronous with target BS (the second base station), the frame number difference Δ Fn of this base station and target BS, the frame position of eating dishes without rice or wine of this base station and target BS is synchronous, slot synchronization, aligns at the time slot a of this base station and the time slot 0 of target BS.According to agreement regulation, at FnA1 mod 51={0, during 10,20,30,50}, the time slot a of this base station can receive the FCCH signal of target BS, and wherein, FnA1 represents the frame number of target BS.
In order to ensure, when this BTS service is normally carried out, not affect business when receiving target base station downlink signal, need the downstream signal of the IDLE frame receiving target base station in this base station.According to agreement regulation, when Δ Fn mould 1326 equals 0, the FCCH signal of target BS can be received.That is, 0 or 13 are equaled at this base station frame number T2, and this base station frame number T3={0,10,20,30,50}, meet the FCCH signal that IDLE frame receives target BS.
Step S503: if upper row relax IDLE, preserves the out-hole run result of IDLE time slot;
Step S505: if upper behavior SACCH decodes, successfully decoded, preserves decoded result and the up channel measurement result of correct SACCH.
Wherein, according to gsm protocol regulation, if channel type is TCH/F, when time slot a is IDLE, time slot a-1 and time slot a+1 is SACCH frame.In order to ensure correct FCCH time slot, continuous 3 time slots are needed to carry out FCCH detection.2 SACCH time slot data and an IDLE out-hole run can be lost like this.Or adopt a time slot to be SACCH time slot, a-1 and a+1 time slot is IDLE time slot.
Step S507: enter online frequency calibration, marks the SACCH time slot and IDLE time slot that take; If taking time slot is the up IDLE time period, carries out measurement by the IDLE metrical information of preserving and report;
Step S509: if taking time slot is the SACCH demodulation time period, mark SACCH data block is occupied; Decode the moment at SACCH, if there is occupied mark at SACCH frame receiving course, the data be correctly decoded according to the last time, as this frame decoding data, replace this to measure by the SACCH out-hole run result of preserving.
By above-described embodiment, provide a kind of compensation method of upward signal.Can effective compensation lose SACCH data and measurement report, reduce the adverse effect that above-mentioned loss brings.Thus improve reliability and the stability of system.
Device embodiment
According to embodiments of the invention, provide a kind of compensation arrangement of upward signal.
Fig. 6 is the structured flowchart of the compensation arrangement of upward signal according to the embodiment of the present invention.Fig. 7 is the structured flowchart of the compensation arrangement of upward signal according to the preferred embodiment of the invention.As shown in Figure 6, the compensation arrangement according to the upward signal of the embodiment of the present invention comprises: determining unit 60, compensating unit 62, be described below in conjunction with Fig. 7.
Determining unit 60, for determining that the first base station needs to carry out the time period of FCCH detection;
Compensating unit 62, be connected with determining unit 60, for when time period internal loss SACCH relevant information, adopt the SACCH relevant information that the SACCH relevant information of up-to-date preservation replaces this to lose, and/or, when time period internal loss idle channel metrical information, adopt the idle channel metrical information that the idle channel metrical information of up-to-date preservation replaces this to lose.
Preferably, as shown in Figure 7, said apparatus also comprises: acquiring unit 64, updating block 66, and wherein, acquiring unit 64, can be connected with determining unit 60, for obtaining the SACCH decoded result and up channel metrical information that are correctly decoded; Updating block 66, be connected with acquiring unit 64, the SACCH decoded result be correctly decoded got for utilizing this upgrades the last SACCH decoded result be correctly decoded preserved, and the up channel metrical information utilizing this to get upgrades last up channel metrical information of preserving.
Preferably, above-mentioned acquiring unit 64, also for obtaining idle channel metrical information; Above-mentioned updating block 66, the idle channel metrical information also for utilizing this to get upgrade last preserve idle channel metrical information.
Preferably, as shown in Figure 7, determining unit 60 may further include: the first determination module 600, for when the first base station and the second base station synchronization, determines that the first base station needs to carry out the time period of FCCH detection according to the positional information of the second Base Transmitter downstream signal; Second determination module 602, is connected with the first determination module 600, for the time period exported according to the first determination module, determines that the first base station needs to carry out the channel of FCCH detection and the call number of frame.
Preferably, as shown in Figure 7, said apparatus can also comprise: identify unit 68, can be connected with updating block 66, for when identify there is occupied frame in SACCH decoding periods, the channel belonging to occupied frame and this frame is identified.
Preferably, identify unit 68, also for when identify there is occupied frame in idle condition measuring period, the channel belonging to occupied frame and this frame is identified.
By above-described embodiment, provide a kind of compensation arrangement of upward signal.By determining unit, the be combineding with each other of compensating unit, the loss SACCH relevant information and measurement report problem that exist in prior art can be solved.
In sum, pass through the above embodiment of the present invention, the compensation method of the upward signal provided and device, the technological deficiency of on-line calibration scheme in prior art can be made up, thus can ensure when realizing online frequency offset correction, the normal work of system is unaffected, thus improves the reliability and stability of system.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a compensation method for upward signal, is characterized in that, comprising:
Determine that the first base station needs to carry out the time period of frequency correction channel FCCH detection;
When described time period internal loss slow associated control channel SACCH relevant information, adopt the SACCH relevant information that the SACCH relevant information of up-to-date preservation replaces this to lose; And/or,
When described time period internal loss idle channel metrical information, adopt the idle channel metrical information that the idle channel metrical information of up-to-date preservation replaces this to lose.
2. method according to claim 1, is characterized in that, described SACCH relevant information comprises:
The SACCH decoded result be correctly decoded, up channel metrical information.
3. method according to claim 2, is characterized in that, before the SACCH relevant information adopting the SACCH relevant information of up-to-date preservation to replace this to lose, described method also comprises:
Obtain the SACCH decoded result and up channel metrical information that are correctly decoded;
Utilize this get described in the SACCH decoded result that is correctly decoded upgrade the last SACCH decoded result be correctly decoded preserved, and the described up channel metrical information utilizing this to get upgrades last up channel metrical information of preserving.
4. method according to claim 1, is characterized in that, before the idle channel measurement result adopting the idle channel measurement result of up-to-date preservation to replace this to lose, described method also comprises:
Obtain idle channel metrical information;
The idle channel metrical information that utilizes this to get upgrade last preserve idle channel metrical information.
5. method according to claim 1 and 2, is characterized in that, describedly determines that the first base station needs the time period of carrying out FCCH detection to comprise:
When described first base station and the second base station synchronization, determine that described first base station needs to carry out the time period of FCCH detection according to the positional information of described second Base Transmitter downstream signal;
Determine that described first base station needs to carry out the channel of FCCH detection and the call number of frame according to the described time period.
6. method according to claim 5, is characterized in that, after determining that the first base station needs the time period of carrying out FCCH detection, before the SACCH relevant information adopting the SACCH relevant information of up-to-date preservation to replace this to lose, described method also comprises:
When identify there is occupied frame in SACCH decoding periods, the channel belonging to occupied frame and this frame is identified.
7. method according to claim 5, it is characterized in that, after determining that the first base station needs the time period of carrying out FCCH detection, before the idle channel metrical information adopting the idle channel metrical information of up-to-date preservation to replace this to lose, described method also comprises:
When identify there is occupied frame in idle condition measuring period, the channel belonging to occupied frame and this frame is identified.
8. a compensation arrangement for upward signal, is characterized in that, comprising:
Determining unit, for determining that the first base station needs to carry out the time period of frequency correction channel FCCH detection;
Compensating unit, for when described time period internal loss slow associated control channel SACCH relevant information, adopt the SACCH relevant information that the SACCH relevant information of up-to-date preservation replaces this to lose, and/or, when described time period internal loss idle channel metrical information, adopt the idle channel metrical information that the idle channel metrical information of up-to-date preservation replaces this to lose.
9. device according to claim 8, is characterized in that, described device also comprises:
Acquiring unit, for obtaining the SACCH decoded result and up channel metrical information that are correctly decoded;
Updating block, for utilize this get described in the SACCH decoded result that is correctly decoded upgrade the last SACCH decoded result be correctly decoded preserved, and the described up channel metrical information utilizing this to get upgrades last up channel metrical information of preserving.
10. device according to claim 9, is characterized in that,
Described acquiring unit, also for obtaining idle channel metrical information;
Described updating block, the idle channel metrical information also for utilizing this to get upgrade last preserve idle channel metrical information.
11. devices according to claim 8, is characterized in that, described determining unit comprises:
According to the positional information of described second Base Transmitter downstream signal, first determination module, for when described first base station and the second base station synchronization, determines that described first base station needs to carry out the time period of FCCH detection;
Second determination module, for the time period exported according to described first determination module, determines that described first base station needs to carry out the channel of FCCH detection and the call number of frame.
12. devices according to claim 11, is characterized in that, described device also comprises:
Identify unit, for when identify there is occupied frame in SACCH decoding periods, the channel belonging to occupied frame and this frame is identified.
13. devices according to claim 12, is characterized in that,
Described identify unit, also for when identify there is occupied frame in idle condition measuring period, the channel belonging to occupied frame and this frame is identified.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910221164.6A CN102055520B (en) | 2009-11-02 | 2009-11-02 | Method and device for compensating uplink signal |
| PCT/CN2010/073398 WO2010145443A1 (en) | 2009-11-02 | 2010-05-31 | Method and device for compensating uplink signals |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910221164.6A CN102055520B (en) | 2009-11-02 | 2009-11-02 | Method and device for compensating uplink signal |
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| CN102055520A CN102055520A (en) | 2011-05-11 |
| CN102055520B true CN102055520B (en) | 2015-01-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184277A (en) * | 2007-12-07 | 2008-05-21 | 中兴通讯股份有限公司 | Inter-base station synchronization method in time division multiple access system |
| CN101183898A (en) * | 2007-12-27 | 2008-05-21 | 中兴通讯股份有限公司 | System, method and device for implementing synchronization of micromicro honeycomb base station |
| CN101523763A (en) * | 2006-08-28 | 2009-09-02 | 诺基亚公司 | Synchronization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006103543A1 (en) * | 2005-04-01 | 2006-10-05 | Nokia Corporation | Method, apparatus and computer program product providing slow associated control channel (sacch) repetition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523763A (en) * | 2006-08-28 | 2009-09-02 | 诺基亚公司 | Synchronization |
| CN101184277A (en) * | 2007-12-07 | 2008-05-21 | 中兴通讯股份有限公司 | Inter-base station synchronization method in time division multiple access system |
| CN101183898A (en) * | 2007-12-27 | 2008-05-21 | 中兴通讯股份有限公司 | System, method and device for implementing synchronization of micromicro honeycomb base station |
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| CN102055520A (en) | 2011-05-11 |
| WO2010145443A1 (en) | 2010-12-23 |
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