CN101562881B - Method for transmitting pilot channels and determining pilot channel transmitting terminal as well as system and device thereof - Google Patents
Method for transmitting pilot channels and determining pilot channel transmitting terminal as well as system and device thereof Download PDFInfo
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- CN101562881B CN101562881B CN2008101044552A CN200810104455A CN101562881B CN 101562881 B CN101562881 B CN 101562881B CN 2008101044552 A CN2008101044552 A CN 2008101044552A CN 200810104455 A CN200810104455 A CN 200810104455A CN 101562881 B CN101562881 B CN 101562881B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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Abstract
The invention discloses a method for transmitting pilot channels and determining a pilot frequency transmitting terminal as well as a system and a device thereof. The method specifically comprises thefollowing steps: the transmitting terminal transmits pre-generated enhanced pilot channels with power higher than pilot channel transmission power according to a preset cycle; a receiving terminal de tects the enhanced pilot channels, and determines the transmitting terminal of the detected enhanced pilot channels. The receiving terminal can detect the enhanced pilot channels transmitted with power higher than the pilot channel transmission power, and determine corresponding base stations according to the enhanced pilot channels, thus increasing the number of base stations that can be detectedby the receiving terminal.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, system and device that send pilot channel, determine the pilot channel transmitting terminal.
Background technology
At CDMA (Code Division Multiple Access, code division multiple access) and WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) in the system, Forward Pilot Channel of each sub-district on the carrier frequency or sector configuration, described Forward Pilot Channel does not carry Any user information, only transmits all-zero code.Receiving terminal is discerned different base stations according to the Forward Pilot Channel of the different base station of receiving.In addition, can also arrive each Forward Pilot Channel of receiving terminal by detection, and then determine detected base station, to finish corresponding operation or to be that the user provides corresponding service, for example receiving terminal is positioned, and Femto-Cell's (base station from home) is synchronous or the like.
At present, wireless location technology commonly used is AFLT (Advanced Forward LinkTrilateration for example, the range finding of advanced forward link three limits) location technology, a plurality of Forward Pilot Channels that the use receiving terminal receives calculate the receiving terminal position as parameter.Concrete, with the receiving terminal position as unknown point, as long as receiving terminal receives the signal of the Forward Pilot Channel of 3 or more base station, just can adopt three limit positioning modes to determine the receiving terminal position, be about to these base stations as the geographical position known point, and the signal propagation distance that described time of arrival (toa) is calculated is as the distance of this known point to unknown point, with each known point be the center of circle, the distance that arrives unknown point by this known point is that radius is justified, these intersection points of justifying are the terminal position.
The inventor finds to exist at least in the prior art following problem in realizing process of the present invention:
Most value-added services that CDMA and WCDMA system provide and technical scheme (for example above-mentioned wireless location technology AFLT) all with receiving terminal can detected base station quantity relevant, and receiving terminal is only determined relevant base station by detected Forward Pilot Channel in the prior art, receiving terminal is can detected Forward Pilot Channel less, and then it is can detected base station number also less, therefore often can't well finish further operation, for example, the limited receiving terminal positioning accuracy that causes of detected base station number is lower.
Summary of the invention
Embodiments of the invention provide a kind of method, system and device that send pilot channel, determine the pilot channel transmitting terminal, can detected transmitting terminal quantity thereby improve receiving terminal.
A kind of method that sends pilot channel comprises:
According to the predetermined cycle, use power to send the enhancing pilot channel that generates in advance greater than emission power of pilot channel.
A kind of method of definite pilot channel transmitting terminal comprises:
Detect to strengthen pilot channel, described enhancing pilot channel is one group and carries out the fixed data sequence that spread processing is carried out in scrambling processing, spreading code through pseudo random sequence;
Determine the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel.
A kind of system is characterized in that, comprising:
The pilot channel emitter was used for according to the predetermined cycle, used the power greater than emission power of pilot channel to send the enhancing pilot channel that generates in advance;
Determine the device of pilot channel, be used to detect the enhancing pilot channel that described pilot channel emitter sends; Determine the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel.
A kind of pilot channel emitter comprises:
The cycle detection module is used to calculate the current time whether to arrive the predetermined cycle;
Strengthen the pilot channel sending module, be used for result of calculation, when arriving predetermined period, use power to send the enhancing pilot channel greater than emission power of pilot channel according to described cycle detection module.
A kind of device of definite pilot channel transmitting terminal comprises:
Strengthen the pilot channel detection module, be used for detecting and strengthen pilot channel, described enhancing pilot channel is one group and carries out the fixed data sequence that spread processing is carried out in scrambling, spreading code through pseudo random sequence;
Strengthen the pilot channel processing module, be used for determining the transmitting terminal of described enhancing pilot channel according to the detected enhancing pilot channel of described enhancing pilot channel module.
The technical scheme that is provided by the embodiment of the invention described above as can be seen, because transmitting terminal (for example base station) periodically uses the power greater than emission power of pilot channel to send the enhancing pilot channel in the embodiment of the invention, therefore receiving terminal can detect more transmitting terminal, so that better finish corresponding operation, for example receiving terminal is located or the like.
Description of drawings
The processing procedure schematic diagram of the transmission pilot channel that Fig. 1 provides for the embodiment of the invention;
The system configuration schematic diagram that Fig. 2 provides for the embodiment of the invention;
The structural representation of the pilot channel emitter that Fig. 3 provides for the embodiment of the invention;
The structural representation of the device of definite pilot channel transmitting terminal that Fig. 4 provides for the embodiment of the invention.
Embodiment
In the embodiment of the invention, transmitting terminal uses the power greater than emission power of pilot channel to send the enhancing pilot channel that generates in advance according to the predetermined cycle.Receiving terminal detects the enhancing pilot channel that may arrive, and determines the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel.
For guaranteeing that receiving terminal can detect more enhancing pilot channel, transmitting terminal is when sending the enhancing pilot channel, and the transmitting power of described enhancing pilot channel is big as far as possible on reaching greater than the basis of emission power of pilot channel in the power bracket that allows.For example, when needs sent the enhancing pilot channel, if the transmitting power of Traffic Channel is very little, then available whole or most of dump powers sent and strengthen pilot channels.
Among the invention described above embodiment, because the enhancing pilot channel power that transmitting terminal sends is greater than pilot channel power, therefore when receiving terminal during at the pilot channel that detects less than certain transmitting terminal transmission, can detect the enhancing pilot channel, and determine transmitting terminal according to strengthening pilot channel, therefore improved the quantity that receiving terminal can detected transmitting terminal.
Among the invention described above embodiment, transmitting terminal generates the process that strengthens pilot channel in advance: one group of fixed data sequence (as all-ones or complete 0 yard or the like) is carried out scrambling by pseudo random sequence handle, after carrying out spread processing by spreading code, generate described enhancing pilot channel.Wherein, the pseudo random sequence of carrying out the scrambling processing for described enhancing pilot channel can be special-purpose pseudo random sequence, can also be the identical pseudo random sequence (PN (pseudo random sequence) the short code phase bias that for example adopts described transmitting terminal is that the enhancing pilot channel of this transmitting terminal carries out the scrambling processing) of other forward channels that sends with described transmitting terminal; The spreading code that carries out spread processing for described enhancing pilot channel be special-purpose spreading code (for example, in the WCDMA system, the Direct-Spread sign indicating number that adopts special use is that the enhancing pilot channel of sub-district carries out spread processing, in the cdma system, the walsh code that adopts special use is that the enhancing pilot channel of sub-district carries out spread processing); And receiving terminal is known scrambling, the spread spectrum mode of described enhancing pilot channel, promptly can carry out demodulation, decoding processing to detected enhancing pilot channel.
In addition, can detect more enhancing pilot channel for guaranteeing receiving terminal, the transmitting power of described enhancing pilot channel is big as far as possible on reaching greater than the basis of emission power of pilot channel in the power bracket that allows.For example, when needs send the enhancing pilot channel, if the transmitting power of Traffic Channel is bigger, then can close or reduce the power of Traffic Channel, and utilize the power that discharges thus increase described enhancing pilot channel transmitting power (promptly utilize close or reduce whole or most of dump powers behind the service channel power send strengthen pilot channels).
Among the invention described above embodiment, when using power greater than emission power of pilot channel to send described enhancing pilot channel, pilot channel, synchronizing channel, paging channel that transmitting terminal sends can send as usual.
Between the enhancing pilot channel of different transmitting terminals transmissions, interfere with each other, in the foregoing description, if different transmitting terminals send not to strengthen pilot channel simultaneously, the enhancing pilot channel that then described different transmitting terminal sends can adopt identical pseudo random sequence to carry out scrambling to carry out spread processing with identical spreading code; Perhaps, also can adopt different pseudo random sequences to carry out scrambling and handle, and adopt identical spreading code to carry out spread processing; Perhaps, also can adopt different spreading codes to carry out spread processing, handle and adopt identical pseudo random sequence to carry out scrambling; Perhaps, also can adopt different pseudo random sequences to carry out the scrambling processing and carry out spread processing with different spreading codes; Strengthen pilot channel if send simultaneously, the enhancing pilot channel that then described different transmitting terminal sends can adopt different spreading codes to carry out spread processing, handles and adopt identical pseudo random sequence to carry out scrambling; Perhaps, also can adopt different pseudo random sequences to carry out scrambling and handle, and adopt identical spreading code to carry out spread processing; Perhaps, also can adopt different pseudo random sequences to carry out the scrambling processing and carry out spread processing with different spreading codes.
In the technical scheme that the invention described above embodiment provides, send when strengthening pilot channel, can also increase the power of synchronizing channel, so that receiving terminal can be realized better synchronously when using greater than the power of emission power of pilot channel.In addition, for fear of causing the performance of communication service seriously to descend owing to the power of closing or reduce Traffic Channel, can send greater than the power of emission power of pilot channel in the predetermined amount of time of the operation that strengthens pilot channel after finishing described using, use the power greater than traffic channel transmission power target value to send Traffic Channel, described traffic channel transmission power target value is meant the transmitting power desired value of setting for Traffic Channel in the forward direction fast power control ring.
At receiving terminal, the described receiving terminal of the invention described above embodiment detects the enhancing pilot channel that may arrive, and determine the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel, its specific implementation can by receiving terminal to the detection that strengthens pilot channel, handle and realize.Specifically can be, receiving terminal has been known the spreading code that strengthens pilot channel (Direct-Spread sign indicating number for example in advance, walsh code), in detection range by with described spreading code corresponding codes channel (for example in the cdma system, be the encoding channel that numbering is identical with the walsh code of described enhancing pilot channel) detection the enhancing pilot channel that might arrive, and determine the transmitting terminal of this enhancing pilot channel according to the information that detected enhancing pilot channel carries, the information that described enhancing pilot channel carries is the identification information of its transmitting terminal, if described enhancing pilot channel adopts the PN short code phase bias of transmitting terminal to carry out scrambling, then described identification information is this PN short code phase bias.
Among the invention described above embodiment,, also detect more enhancing pilot channels, and determine transmitting terminal, therefore improved the quantity that receiving terminal can detected transmitting terminal according to strengthening pilot channel because receiving terminal not only detects pilot channel.
Below in conjunction with accompanying drawing the specific implementation of the embodiment of the invention in actual application is described in detail.
Application Example one, at the processing procedure of transmitting terminal
Described transmitting terminal can be to possess the device that sends the forward channel function, for example base station.With the base station is example, is the described base station regulation emission cycle in advance, and sends the enhancing pilot channel that generates in advance after each emission cycle arrives.
The described process that strengthens pilot channel that generates in advance specifically can be: adopt pseudo random sequence that one group of fixing data sequence is carried out scrambling and handle, should use among the embodiment one, described pseudo random sequence can be special-purpose pseudo random sequence, also can be the pseudo random sequence identical with other forward channels of described base station, PN short code phase bias as this base station, described data sequence is not carried user profile, is fixed value, can be all-ones or complete 0 yard or the like; Then, adopt spreading code that the data sequence of process scrambling processing is carried out spread processing, generate the enhancing pilot channel, described spreading code can be Direct-Spread sign indicating number, walsh code or the like for being the spreading code of the special use of described enhancing pilot channel distribution.
The process of transmitting to the enhancing pilot channel as shown in Figure 1, its specific implementation can comprise the steps:
Above-mentioned transmission strengthens in the processing procedure of pilot channel, does not influence pilot channel, the synchronizing channel of base station, the normal transmission of paging channel.
In addition, for fear of causing the performance of communication service seriously to descend owing to the power of closing or reduce Traffic Channel, can send greater than the power of predetermined value in the predetermined amount of time of the operation that strengthens pilot channel after finishing described using, use the power greater than traffic channel transmission power target value to send Traffic Channel, described traffic channel transmission power target value is meant the transmitting power desired value of setting for Traffic Channel in the forward direction fast power control ring.
Between the enhancing pilot channel of different base station transmission, interfere with each other, at different base stations, if send not strengthen pilot channel simultaneously, the enhancing pilot channel that then described different base station sends can adopt identical pseudo random sequence to carry out scrambling and handle and carry out spread processing with identical spreading code; Perhaps, also can adopt different pseudo random sequences to carry out scrambling and handle, and adopt identical spreading code to carry out spread processing; Perhaps, also can adopt different spreading codes to carry out spread processing, handle and adopt identical pseudo random sequence to carry out scrambling; Perhaps, also can adopt different pseudo random sequences to carry out the scrambling processing and carry out spread processing with different spreading codes; Strengthen pilot channel if send simultaneously, the enhancing pilot channel that then described different base station sends can adopt different spreading codes to carry out spread processing, handles and adopt identical pseudo random sequence to carry out scrambling; Perhaps, also can adopt different pseudo random sequences to carry out scrambling and handle, and adopt identical spreading code to carry out spread processing; Perhaps, also can adopt different pseudo random sequences to carry out the scrambling processing and carry out spread processing with different spreading codes.
In the invention described above Application Example one, discharge transmitting power and use power greater than emission power of pilot channel to send to strengthen pilot channel owing to the base station adopt to reduce or closes service channel power, therefore improved the possibility that receiving terminal detects described enhancing pilot channel, because increase transmitting power, and then improved the synchronous progress of receiving terminal to synchronizing channel.In addition, owing in a period of time that sends after strengthening pilot channel, increase the transmitting power of Traffic Channel, thus the performance that has guaranteed Traffic Channel can not be interfered.
Application Example two, at the processing procedure of receiving terminal
Described receiving terminal can be a portable terminal, it also can be Femto-Cell or the like entity device, and described receiving terminal has been known spread spectrum mode and the scrambling mode that strengthens pilot channel in advance, promptly can carry out despreading and dissection process to detected enhancing pilot channel, and in detection range, detect the enhancing pilot channel that might arrive and pilot channel or the like.Receiving terminal detects and strengthens pilot channel, determines that the specific implementation of the transmitting terminal (base station) of enhancing pilot channel can comprise the steps:
Step 21, by detecting the enhancing pilot channel that may arrive within the specific limits with described enhancing pilot channel corresponding codes channel, the coding of described encoding channel is identical (for example in the cdma system with the spreading code that distributes for the enhancing pilot channel, be the numbering encoding channel identical with the walsh code of described enhancing pilot channel), the transmitting power of described enhancing pilot channel is greater than the transmitting power of pilot channel;
Step 22, the information of carrying according to detected enhancing pilot channel are determined the transmitting terminal of this enhancing pilot channel, the information that described enhancing pilot channel carries is the identification information of its transmitting terminal, if described enhancing pilot channel adopts the PN short code phase bias of transmitting terminal to carry out scrambling, then described identification information is this PN short code phase bias.
In the invention described above Application Example two, because described enhancing pilot channel adopts the power of big and emission power of pilot channel to send, therefore receiving terminal can detect more enhancing pilot channel, and determine transmitting terminal, and then improved the quantity that receiving terminal can detected transmitting terminal according to detected pilot channel.
Application Example three, a kind of based on the method for locating terminal that strengthens pilot channel
Should use among the embodiment three, the method that provides a kind of applying detection to strengthen pilot channel is carried out the processing scheme of terminal positioning.Specific implementation can comprise the steps:
Step 31, each base station are periodically closed or are reduced service channel power, and use power to send the enhancing pilot channel that generates in advance greater than emission power of pilot channel, described enhancing pilot channel is one group to carry out scrambling processing, spreading code (as Direct-Spread sign indicating number, walsh code or the like) through the PN short code phase bias that sends the base station and carries out the fixing data sequence of spread processing (as complete 0 yard, all-ones or the like), simultaneously, the base station sends pilot channel, synchronizing channel, paging channel as usual;
Step 32, terminal by be provided with described enhancing pilot channel corresponding codes channel (for example in the cdma system, be the numbering encoding channel identical) with the walsh code of described enhancing pilot channel, in detection range, detect the enhancing pilot channel that may arrive, simultaneously, terminal receives pilot channel as usual;
The PN short code phase bias that step 33, terminal are carried according to detected enhancing pilot channel is judged the base station of this enhancing pilot channel;
The base station whether step 34, terminal judges are determined in the recording step 33, promptly whether the pilot channel of this base station transmission is detected by terminal, if, then do not carry out record, otherwise, write down the information of described base station, and the signal propagation distance calculated the time of advent according to described enhancing pilot channel of record;
Step 35, according to the base station information of all records, and corresponding signal propagation distance adopts three limit positioning modes to determine the terminal position.
For guaranteeing that receiving terminal can detect more enhancing pilot channel, in the above-mentioned steps 31, can close or reduce the power of Traffic Channel, and utilize the power that discharges thus increase described enhancing pilot channel transmitting power (promptly utilize close or reduce whole or most of dump powers behind the service channel power send strengthen pilot channels).
By above-mentioned processing procedure as can be known, because the technical scheme that in the terminal positioning process, has adopted Application Example three of the present invention to provide, terminal is when detecting pilot channel, can detect more the enhancing pilot channel that the power greater than emission power of pilot channel sends, and can determine to send the base station according to described enhancing pilot channel, make terminal to increase by detected base station number, thereby improved the precision of terminal positioning.
Application Example four, a kind of based on the Femto-Cell method for synchronous that strengthens pilot channel
The Femto-Cell that cdma system provides can solve the covering problem of family and hot zones.In order to realize the synchronous of Femto-Cell, at first need pilot channel and synchronizing channel by obtaining other base stations, finish initial synchronisation, use NTP (Network Time Protocol, NTP (Network Time Protocol)) to calibrate then.But because existing pilot channel power is less, and that Femto-Cell generally is installed in is indoor, so Femto-Cell usually can't finish initial synchronisation because can not detect the pilot channel of other base stations and synchronizing channel.In addition, because the transmission delay between Femto-Cell and other base stations, even, still can't obtain lock in time accurately through the NTP calibration.Should provide a kind of method of applying detection enhancing pilot channel to carry out the synchronous processing scheme of Femto-Cell with among the embodiment four.Specific implementation can be, each base station is periodically closed or is reduced service channel power, and use power to send the enhancing pilot channel greater than emission power of pilot channel, for guaranteeing that receiving terminal can detect more enhancing pilot channel, in the above-mentioned steps 31, can close or reduce the power of Traffic Channel, and utilize the power that discharges thus increase described enhancing pilot channel transmitting power (promptly utilize close or reduce whole or most of dump powers behind the service channel power send strengthen pilot channels), described enhancing pilot channel is that one group of PN short code phase bias through the transmission base station carries out the scrambling processing, spreading code is (as the Direct-Spread sign indicating number, walsh code or the like) carries out the fixing data sequence of spread processing (as complete 0 yard, all-ones or the like), simultaneously, the base station sends pilot channel as usual, synchronizing channel, paging channel; And each base station increases the transmitting power of synchronizing channel.Then Femto-Cell carries out synchronous process and specifically can comprise:
(1) initialization synchronous phase
Step 41, Femto-Cell detect the enhancing pilot channel that other base station sends in the pilot channel that detects other base station transmission;
Step 42, the more detected signal quality that respectively strengthens pilot channel and pilot channel;
Step 43, surpass enhancing pilot channel or the pilot channel of selecting the signal quality maximum in the enhancing pilot channel of predetermined threshold value and the pilot channel, and determine its transmitting base station according to the PN short code phase bias that this enhancing pilot channel or pilot channel carry at signal quality;
It is synchronous that initialization is carried out in the synchronizing channel that enhancing pilot channel that step 44, basis are determined or pilot channel and described transmitting base station send and this base station, and concrete initialization synchronized method can carry out according to the synchronous method of Femto-Cell initialization.
By above-mentioned processing procedure as can be known, because the base station uses the power greater than emission power of pilot channel to send the enhancing pilot channel, therefore Femto-Cell is to detect more base station number, it is synchronous that initialization is carried out in the base station of choosing the signal quality maximum from more base station, and because the base station strengthens the power of synchronizing channel simultaneously, therefore Femto-Cell can also obtain better long code synchronizing information, and is synchronous to realize initialization.
(2) Femto-Cell accurately locatees and the NTP calibration
After finishing initialization synchronously, in order to eliminate the transmission delay between Femto-Cell and other base station, improve timing tracking accuracy, can also adopt the method for terminal positioning in the above-mentioned Application Example that Femto-Cell is accurately located, then the synchronous result of initialization be carried out the NTP calibration.
The embodiment of the invention also provides a kind of system, its structure as shown in Figure 2, the specific implementation structure can comprise:
Pilot channel emitter 21 was used for according to the predetermined cycle, used the power greater than emission power of pilot channel to send the enhancing pilot channel that generates in advance;
Determine the device 22 of pilot channel transmitting terminal, be used to detect the enhancing pilot channel that described pilot channel emitter 21 sends; Determine the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel.
The embodiment of the invention also provides a kind of pilot channel emitter, its structure as shown in Figure 3, the specific implementation structure can comprise:
Cycle detection module 211 is used to calculate the current time whether to arrive the predetermined cycle;
Strengthen pilot channel sending module 212, be used for result of calculation, when arriving predetermined period, use power to send the enhancing pilot channel that generates in advance greater than emission power of pilot channel according to described cycle detection module 211.
The pilot channel emitter that the embodiment of the invention provides can also comprise and strengthen pilot channel generation module 213, be used for one group of fixed data sequence through pseudo random sequence carry out the scrambling processing, spreading code carries out spread processing, generate to strengthen pilot channel; Accordingly, described enhancing pilot channel sending module 212 sends the enhancing pilot channel that described enhancing pilot channel generation module 213 generates.Wherein, the pseudo random sequence of carrying out the scrambling processing for described enhancing pilot channel can be special-purpose pseudo random sequence, can also be the pseudo random sequence (PN (pseudo random sequence) the short code phase bias that for example adopt described transmitting terminal be the enhancing pilot channel of this transmitting terminal carry out scrambling processing) identical with other forward channels of same transmitting terminal; The spreading code that carries out spread processing for described enhancing pilot channel be special-purpose spreading code (for example, in the WCDMA system, the Direct-Spread sign indicating number that adopts special use is that the enhancing pilot channel of sub-district carries out spread processing, in the cdma system, the walsh code that adopts special use is that the enhancing pilot channel of sub-district carries out spread processing)
In the embodiment of the invention, for guaranteeing that receiving terminal can detect the enhancing pilot channel, described pilot channel emitter can also comprise first power control module 214, be used for result of calculation according to described cycle detection module 211, when arriving predetermined period, close or reduce service channel power, discharge transmitting power; Accordingly, described enhancing pilot channel sending module 212 usefulness send the enhancing pilot channel that generates in advance greater than the power of emission power of pilot channel and are specially: the power that utilizes described first power control module 214 to discharge sends after increasing the transmitting power of described enhancing pilot channel, specifically be meant to utilize and close or reduce whole or most of dump powers after service channel power discharges transmitting power, send described enhancing pilot channel.
Can also comprise second power control module 215 in the emitter that the invention described above embodiment provides, be used for when described enhancing pilot channel sending module 212 sends described enhancing pilot channel, increasing the transmitting power of synchronizing channel.Like this, receiving terminal can obtain better long code synchronizing information, can better finish synchronous working in the application that for example the Femto-Cell initialization waits synchronously.
In addition, for fear of causing the performance of communication service seriously to descend owing to the power of closing or reduce Traffic Channel, described pilot channel emitter can also comprise the 3rd power control module 216, be used in the predetermined amount of time after the operation that described enhancing pilot channel sending module 212 sends the enhancing pilot channel is finished, use the power greater than traffic channel transmission power target value to send Traffic Channel, described traffic channel transmission power target value is meant the transmitting power desired value of setting for Traffic Channel in the forward direction fast power control ring.
For fear of phase mutual interference between the enhancing pilot channel of different emitter transmissions, at different emitters, if send not strengthen pilot channel simultaneously, the enhancing pilot channel that then described different emitter sends can adopt identical pseudo random sequence to carry out scrambling and handle and carry out spread processing with identical spreading code; Perhaps, also can adopt different pseudo random sequences to carry out scrambling and handle, and adopt identical spreading code to carry out spread processing; Perhaps, also can adopt different spreading codes to carry out spread processing, handle and adopt identical pseudo random sequence to carry out scrambling; Perhaps, also can adopt different pseudo random sequences to carry out the scrambling processing and carry out spread processing with different spreading codes; Strengthen pilot channel if send simultaneously, the enhancing pilot channel that then described different emitter sends can adopt different spreading codes to carry out spread processing, handles and adopt identical pseudo random sequence to carry out scrambling; Perhaps, also can adopt different pseudo random sequences to carry out scrambling and handle, and adopt identical spreading code to carry out spread processing; Perhaps, also can adopt different pseudo random sequences to carry out the scrambling processing and carry out spread processing with different spreading codes;
In the invention described above Application Example, because dispensing device adopts the power greater than emission power of pilot channel to send the enhancing pilot channel, therefore improved the possibility that receiving terminal detects described enhancing pilot channel, because increase transmitting power, and then improved the synchronous progress of receiving terminal to synchronizing channel.In addition, owing in a period of time that sends after strengthening pilot channel, increase the transmitting power of Traffic Channel, thus the performance that has guaranteed Traffic Channel can not be interfered.
The embodiment of the invention also provides a kind of device of definite pilot channel transmitting terminal, its structure as shown in Figure 4, the specific implementation structure can comprise:
Strengthen pilot channel detection module 221, be used for detect strengthening pilot channel, described enhancing pilot channel is one group to carry out scrambling, spreading code (as Direct-Spread sign indicating number, walsh code or the like) through pseudo random sequence and carries out the fixed data sequence of spread processing (as all-ones, complete 0 yard or the like);
Strengthen pilot channel processing module 222, be used for determining the transmitting terminal of described enhancing pilot channel according to described enhancing pilot channel module 221 detected enhancing pilot channels.
Wherein, the device of definite pilot channel transmitting terminal that the embodiment of the invention provides has been known spread spectrum mode and the scrambling mode that strengthens pilot channel in advance, promptly can carry out despreading to detected enhancing pilot channel, decoding processing, the concrete working method of the device of described definite pilot channel transmitting terminal can be, strengthen pilot channel detection module 221 by that be provided with and described enhancing pilot channel corresponding codes channel, in detection range, detect the enhancing pilot channel that may arrive, the coding of described encoding channel regulation identical with the spreading code that distributes for the enhancing pilot channel (in the cdma system, being the numbering encoding channel identical for example) with the walsh code of described enhancing pilot channel; The information that described enhancing pilot channel processing module 222 is carried according to the detected enhancing pilot channel of described enhancing pilot channel detection module is determined the transmitting terminal of this enhancing pilot channel, the information that described enhancing pilot channel carries is the identification information of its transmitting terminal, if described enhancing pilot channel adopts the PN short code phase bias of transmitting terminal to carry out scrambling, then described identification information is this PN short code phase bias.
Among the invention described above embodiment, because described enhancing pilot channel adopts the power greater than emission power of pilot channel to send, therefore the device of described definite pilot channel transmitting terminal can detect more enhancing pilot channel, and determine transmitting terminal, and then improved the quantity that the device of definite pilot channel transmitting terminal can detected transmitting terminal according to the transmitting terminal information that detected pilot channel carries.
" reception " speech in the embodiment of the invention can be understood as and initiatively obtains from other modules also can be to receive the information that other modules are sent.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
The scheme of the content record of claim also is the protection range of the embodiment of the invention.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1. a method that sends pilot channel is characterized in that, comprising:
According to the predetermined cycle, use power to send the enhancing pilot channel that generates in advance greater than emission power of pilot channel, and close or reduce the power of Traffic Channel, and discharge transmitting power, utilize the power of described release to increase the transmitting power of described enhancing pilot channel.
2. method according to claim 1 is characterized in that, the described process that strengthens pilot channel that generates in advance comprises: one group of fixed data sequence is carried out scrambling by pseudo random sequence handle, carry out spread processing by spreading code.
3. method according to claim 2 is characterized in that, this method also comprises:
If there are at least two transmitting terminals to send described enhancing pilot channel, then when described at least two transmitting terminals do not send described enhancing pilot channel simultaneously, the enhancing pilot channel that described at least two transmitting terminals send adopts identical pseudo random sequence to carry out scrambling to carry out spread processing with identical spreading code; Perhaps, different pseudo random sequences are carried out the scrambling processing; Perhaps, different spreading codes carry out spread processing;
When described at least two transmitting terminals sent the enhancing pilot channel simultaneously, the enhancing pilot channel that described at least two transmitting terminals send adopted different spreading codes to carry out spread processing; Perhaps, different pseudo random sequences are carried out the scrambling processing.
4. method according to claim 1 and 2 is characterized in that, described using greater than the power of emission power of pilot channel sends when strengthening pilot channel, increases the transmitting power of synchronizing channel.
5. method according to claim 1, it is characterized in that, send greater than the power of emission power of pilot channel in the predetermined amount of time of the operation that strengthens pilot channel after finishing described using, use power transmission Traffic Channel greater than traffic channel transmission power target value.
6. the method for a definite pilot channel transmitting terminal is characterized in that, comprising:
Detect and strengthen pilot channel, described enhancing pilot channel is that one group of process pseudo random sequence is carried out the fixed data sequence that scrambling is handled, also carried out spread processing through spreading code, and described enhancing pilot channel by transmitting terminal according to the predetermined cycle, use power to send greater than emission power of pilot channel, and close or reduce the power of Traffic Channel by transmitting terminal, discharge transmitting power, increase the transmitting power of described enhancing pilot channel with the power that utilizes described release;
Determine the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel.
7. a system that sends pilot channel and determine the pilot channel transmitting terminal is characterized in that, comprising:
The pilot channel emitter, be used for according to the predetermined cycle, use power to send the enhancing pilot channel that generates in advance greater than emission power of pilot channel, and close or reduce the power of Traffic Channel, discharge transmitting power, utilize the power of described release to increase the transmitting power of described enhancing pilot channel;
Determine the device of pilot channel transmitting terminal, be used to detect the enhancing pilot channel that described pilot channel emitter sends; Determine the transmitting terminal of described enhancing pilot channel according to detected enhancing pilot channel.
8. a pilot channel emitter is characterized in that, comprising:
The cycle detection module is used to calculate the current time whether to arrive the predetermined cycle;
First power control module is used for the result of calculation according to described cycle detection module, when arriving predetermined period, closes or reduces service channel power, discharges transmitting power;
Strengthen the pilot channel sending module, be used for result of calculation according to described cycle detection module, when arriving predetermined period, use greater than the power of emission power of pilot channel and send the enhancing pilot channel that generates in advance, the power that utilizes described first power control module to discharge sends after increasing the transmitting power of described enhancing pilot channel.
9. device according to claim 8 is characterized in that, this device also comprises:
Strengthen the pilot channel generation module, be used for that one group of fixed data sequence process pseudo random sequence is carried out scrambling and handle, also carry out spread processing, generate the enhancing pilot channel through spreading code;
Described enhancing pilot channel sending module sends the enhancing pilot channel of described generation.
10. according to Claim 8 or 9 described devices, it is characterized in that this device also comprises:
Second power control module is used for increasing the transmitting power of synchronizing channel when described enhancing pilot channel sending module sends described enhancing pilot channel.
11. device according to claim 8 is characterized in that, this device also comprises:
The 3rd power control module is used for using the power greater than traffic channel transmission power target value to send Traffic Channel in the predetermined amount of time after the operation that described enhancing pilot channel sending module transmission strengthens pilot channel is finished.
12. the device of a definite pilot channel transmitting terminal is characterized in that, comprising:
Strengthen the pilot channel detection module, be used for detecting the enhancing pilot channel, described enhancing pilot channel is that one group of process pseudo random sequence is carried out scrambling, also the process spreading code carries out the fixed data sequence of spread processing, and described enhancing pilot channel by transmitting terminal according to the predetermined cycle, use power to send greater than emission power of pilot channel, and close or reduce the power of Traffic Channel by transmitting terminal, discharge transmitting power, increase the transmitting power of described enhancing pilot channel with the power that utilizes described release;
Strengthen the pilot channel processing module, be used for determining the transmitting terminal of described enhancing pilot channel according to the detected enhancing pilot channel of described enhancing pilot channel module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101044552A CN101562881B (en) | 2008-04-18 | 2008-04-18 | Method for transmitting pilot channels and determining pilot channel transmitting terminal as well as system and device thereof |
| PCT/CN2009/071344 WO2009127165A1 (en) | 2008-04-18 | 2009-04-17 | Method, system and equipment for sending pilot frequency channels, determining sending ends of pilot frequency channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101044552A CN101562881B (en) | 2008-04-18 | 2008-04-18 | Method for transmitting pilot channels and determining pilot channel transmitting terminal as well as system and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101562881A CN101562881A (en) | 2009-10-21 |
| CN101562881B true CN101562881B (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101044552A Expired - Fee Related CN101562881B (en) | 2008-04-18 | 2008-04-18 | Method for transmitting pilot channels and determining pilot channel transmitting terminal as well as system and device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101562881B (en) |
| WO (1) | WO2009127165A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ605677A (en) * | 2010-08-24 | 2014-10-31 | Ericsson Telefon Ab L M | Device and method for hspa wcdma uplink pilots |
| CN103209066B (en) * | 2012-03-29 | 2016-05-11 | 开曼群岛威睿电通股份有限公司 | Improve the system and method for the enhancing pilot tone of movement station location |
| CN103428812B (en) * | 2012-05-18 | 2016-05-11 | 电信科学技术研究院 | A kind of method of transmitting paging information, equipment and system |
| CN106411453A (en) * | 2016-06-22 | 2017-02-15 | 福建澳瀚信息技术有限公司 | Destruction-type wireless signal blocking device and method based on code domain channel |
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| CN1533073A (en) * | 2003-03-26 | 2004-09-29 | 华为技术有限公司 | Positoning precision improving method of advanced forward link trilateration |
| CN1620615A (en) * | 2001-12-14 | 2005-05-25 | 高通股份有限公司 | Position determination system that uses a cellular communication system |
| CN1797026A (en) * | 2004-12-28 | 2006-07-05 | 中兴通讯股份有限公司 | Method and system for calculating position based on triangle positioning of forwarding chain in high rank |
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- 2008-04-18 CN CN2008101044552A patent/CN101562881B/en not_active Expired - Fee Related
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- 2009-04-17 WO PCT/CN2009/071344 patent/WO2009127165A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620615A (en) * | 2001-12-14 | 2005-05-25 | 高通股份有限公司 | Position determination system that uses a cellular communication system |
| CN1533073A (en) * | 2003-03-26 | 2004-09-29 | 华为技术有限公司 | Positoning precision improving method of advanced forward link trilateration |
| CN1797026A (en) * | 2004-12-28 | 2006-07-05 | 中兴通讯股份有限公司 | Method and system for calculating position based on triangle positioning of forwarding chain in high rank |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009127165A1 (en) | 2009-10-22 |
| CN101562881A (en) | 2009-10-21 |
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