CN101697625B - Communication method, base station and terminal for TD-SCDMA system - Google Patents
Communication method, base station and terminal for TD-SCDMA system Download PDFInfo
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- CN101697625B CN101697625B CN2009102369113A CN200910236911A CN101697625B CN 101697625 B CN101697625 B CN 101697625B CN 2009102369113 A CN2009102369113 A CN 2009102369113A CN 200910236911 A CN200910236911 A CN 200910236911A CN 101697625 B CN101697625 B CN 101697625B
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- 238000004891 communication Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 230000005484 gravity Effects 0.000 description 6
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- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The invention provides a communication method, a base station and a terminal for a TD-SCDMA system. The method comprises the following steps that: the base station sets a beacon channel on a TS0 time slot of a main carrier and a downlink non-TS0 time slot of an auxiliary carrier respectively and sends the beacon channels; when the terminal receives a service on the TS0 time slot of the auxiliary carrier of a service cell, the terminal receives signals of the beacon channels on the downlink non-TS0 time slot of a pilot-frequency neighboring cell; and the terminal performs signal measurement on the pilot-frequency neighboring cell according to the received signals of the beacon channels. In the communication method, the base station and the terminal for the TD-SCDMA system ensure that the signal measurement of the pilot-frequency neighboring cell can also be performed when a traffic channel of the terminal is configured on the TS0 time slot of the auxiliary carrier.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of communication means, base station and terminal that is used for the TD-SCDMA system.
Background technology
In mobile communication system, can there be known signal as a reference when the demodulation downstream signal in order to make terminal, in frame structure, be provided with beacon channel.The characteristics of beacon channel are that omnidirectional sends, channel power is constant, and the size of channel power meets the demand that the sub-district covers.In TD SDMA (TD-SCDMA) system, the position of beacon channel is minimum two code channels (0 code channel and 1 code channel) of TS0 time slot in the frame structure, terminal is carried out the demodulation of the signal of this sub-district by the signal that receives the Serving cell beacon channel, and the signal of the beacon channel by receiving adjacent sub-district carries out the signal measurement of adjacent sub-district, for sub-district gravity treatment and switching are prepared.
Present TD-SCDMA system is the system of N frequency, and promptly can there be a plurality of carrier waves a sub-district, and the carrier wave that wherein carries beacon channel is a main carrier, and other carrier waves that do not carry beacon channel are auxilliary carrier wave.Fig. 1 is the subframe structure schematic diagram of TD-SCDMA system, and with reference to Fig. 1, beacon channel is carried on the TS0 time slot of main carrier, and the TS0 time slot of auxilliary carrier wave does not carry beacon channel.In order to reduce interference to the TS0 time slot of main carrier, general bearer service not on the TS0 time slot of auxilliary carrier wave.Along with increasing of the shared frequency range of TD-SCDMA system, the cloth net mode is more and more flexible, and the TS0 time slot of auxilliary carrier wave is also fewer and feweri to the interference of the TS0 time slot of main carrier, makes also to be used for bearer service on the TS0 time slot of auxilliary carrier wave.
The inventor is in realizing process of the present invention, find that there is following defective at least in prior art: when the service bearer of terminal is on the TS0 time slot of auxilliary carrier wave, carry out in the process in business, terminal has no time to receive the signal of iso-frequency adjacent community beacon channel, cause terminal can't carry out the signal measurement of iso-frequency adjacent community, thereby influence the gravity treatment and the switching of terminal.
Summary of the invention
The communication means, base station and the terminal that the purpose of this invention is to provide a kind of TD-SCDMA of being used for system to solve when the traffic channel configuration of terminal is being assisted on the TS0 time slot of carrier wave, can't be carried out the problem of the signal measurement of iso-frequency adjacent community.
For solving the problems of the technologies described above, it is as follows to the invention provides technical scheme:
A kind of communication means that is used for the TD-SCDMA system comprises:
The base station is provided with beacon channel respectively and sends on a descending non-TS0 time slot of the TS0 of main carrier time slot and auxilliary carrier wave;
When terminal receives business on the TS0 of the auxilliary carrier wave of Serving cell time slot, on the described descending non-TS0 time slot of iso-frequency adjacent community, receive the signal of beacon channel;
Terminal is carried out the signal measurement of described iso-frequency adjacent community according to the signal of the beacon channel that receives.
Above-mentioned communication means, wherein, described beacon channel be arranged on described TS0 time slot and described descending non-TS0 time slot No. 0 and 1 number road on.
A kind of base station that is used for the TD-SCDMA system comprises:
The beacon sending module, be used on a descending non-TS0 time slot of the TS0 of main carrier time slot and auxilliary carrier wave, being provided with respectively beacon channel and transmission, make when terminal receives business on the TS0 of the auxilliary carrier wave of Serving cell time slot, on the described descending non-TS0 time slot of iso-frequency adjacent community, receive the signal of beacon channel, and carry out the signal measurement of described iso-frequency adjacent community according to the signal of the beacon channel that receives.
Above-mentioned base station, wherein, described beacon channel be arranged on described TS0 time slot and described descending non-TS0 time slot No. 0 and 1 number road on.
A kind of terminal that is used for the TD-SCDMA system comprises:
The beacon receiver module is used for receiving on the TS0 of the auxilliary carrier wave of Serving cell time slot when professional when this terminal, receives the signal of beacon channel on the descending non-TS0 time slot that is provided with beacon channel of the auxilliary carrier wave of iso-frequency adjacent community;
Measurement module is used for carrying out according to the signal of the beacon channel that receives the signal measurement of described iso-frequency adjacent community.
Above-mentioned terminal, wherein, described beacon channel be arranged on the TS0 time slot of main carrier and described descending non-TS0 time slot No. 0 and 1 number road on.
Embodiments of the invention are except being provided with the beacon channel on the TS0 of main carrier time slot, also on a descending non-TS0 time slot of auxilliary carrier wave, beacon channel is set, make when terminal receives business on the TS0 of the auxilliary carrier wave of Serving cell time slot, can on the described descending non-TS0 time slot of iso-frequency adjacent community, receive the signal of beacon channel, and carry out the signal measurement of described iso-frequency adjacent community according to the signal of the beacon channel that receives.In addition, because the increase of beacon channel position, terminal is the beacon channel of selective reception relevant position as the case may be, and making also increases greatly to the flexibility of measuring scheduling.
Description of drawings
Fig. 1 is the subframe structure schematic diagram of TD-SCDMA system;
Fig. 2 is the structural representation of the TD-SCDMA system of the embodiment of the invention;
Fig. 3 is the flow chart of the communication means that is used for the TD-SCDMA system of the embodiment of the invention;
Fig. 4 is 2: 5 TD-SCDMA system subframe structure schematic diagram for uplink and downlink timeslot ratio in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
With reference to Fig. 2, the TD-SCDMA system of the embodiment of the invention comprises base station and terminal, wherein:
Comprise the beacon sending module in the described base station, described beacon sending module is used for being provided with respectively beacon channel and sends on a descending non-TS0 time slot of the TS0 of main carrier time slot and auxilliary carrier wave.
According to the regulation of agreement, beacon channel be arranged on No. 0 of the TS0 time slot of main carrier and 1 number road on.The present invention also is provided with beacon channel (auxiliary beacon channel) except being provided with the beacon channel on a descending non-TS0 time slot of auxilliary carrier wave on the TS0 of main carrier time slot.Exemplarily, described beacon channel be arranged on No. 0 of described descending non-TS0 time slot and 1 number road on, certainly, also described beacon channel can be arranged on other code channels of described descending non-TS0 time slot.
In addition, the mode that sends beacon channel should satisfy the characteristics of beacon channel, that is: omnidirectional sends, channel power is constant, and the size of channel power meets the demand that the sub-district covers.
Comprise beacon receiver module and measurement module in the described terminal.
Described beacon receiver module is used for receiving on the TS0 of the auxilliary carrier wave of Serving cell time slot when professional when this terminal, receives the signal of beacon channel on the descending non-TS0 time slot that is provided with beacon channel of the auxilliary carrier wave of iso-frequency adjacent community;
When terminal receives business on the TS0 time slot,, therefore, select to receive the signal of beacon channel from the descending non-TS0 time slot that is provided with beacon channel owing to have no time on the TS0 of other alien frequencies carrier waves time slot, to receive beacon channel.
Described measurement module is used for carrying out according to the signal of the beacon channel that receives the signal measurement of described iso-frequency adjacent community.
After finishing the signal measurement of iso-frequency adjacent community, just can determine whether terminal will carry out sub-district gravity treatment and switching according to measurement result.For example, the signal strength signal intensity of iso-frequency adjacent community perhaps, greater than the signal strength signal intensity of Serving cell, is then determined to carry out sub-district gravity treatment or switching greater than default thresholding.
With reference to Fig. 3, the communication means that is used for the TD-SCDMA system of the embodiment of the invention mainly comprises the steps:
Step 301: the base station is provided with beacon channel respectively and sends on a descending non-TS0 time slot of the TS0 of main carrier time slot and auxilliary carrier wave;
According to the regulation of agreement, beacon channel be arranged on No. 0 of the TS0 time slot of main carrier and 1 number road on.The present invention also is provided with beacon channel (auxiliary beacon channel) except being provided with the beacon channel on a descending non-TS0 time slot of auxilliary carrier wave on the TS0 of main carrier time slot.Exemplarily, described beacon channel be arranged on No. 0 of described descending non-TS0 time slot and 1 number road on, certainly, also described beacon channel can be arranged on other code channels of described descending non-TS0 time slot.
In addition, the mode that sends beacon channel should satisfy the characteristics of beacon channel, that is: omnidirectional sends, channel power is constant, and the size of channel power meets the demand that the sub-district covers.
Step 302: when terminal receives business on the TS0 of the auxilliary carrier wave of Serving cell time slot, on the described descending non-TS0 time slot of iso-frequency adjacent community, receive the signal of beacon channel;
When terminal receives business on the TS0 time slot,, therefore, select to receive the signal of beacon channel from the descending non-TS0 time slot that is provided with beacon channel owing to have no time on the TS0 of other alien frequencies carrier waves time slot, to receive beacon channel.
Step 303: terminal is carried out the signal measurement of described iso-frequency adjacent community according to the signal of the beacon channel that receives.
After finishing the signal measurement of iso-frequency adjacent community, just can determine whether terminal will carry out sub-district gravity treatment and switching according to measurement result.For example, the signal strength signal intensity of iso-frequency adjacent community perhaps, greater than the signal strength signal intensity of Serving cell, is then determined to carry out sub-district gravity treatment or switching greater than default thresholding.
Below provide an application example of the present invention.
The uplink and downlink timeslot ratio of supposing the TD-SCDMA system frame structure is 2: 5, and then frame structure as shown in Figure 4.The auxiliary beacon channel is arranged on No. 0 of the TS3 time slot and 1 number road on.When terminal receives on the TS3 time slot when professional, can on the TS0 time slot, carry out the measurement of iso-frequency adjacent community, when terminal when the enterprising industry of TS0 time slot is engaged in, can on the TS3 time slot, carry out the measurement of iso-frequency adjacent community.Network terminal can be as far as possible with the terminal scheduling of traffic carrying capacity little (time slot gets final product loaded service) on the TS0 time slot, on TS0 time slot and TS3 time slot, receive professional probability simultaneously to reduce terminal.
Should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spiritual scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. a communication means that is used for the TD-SCDMA system is characterized in that, comprising:
The base station is provided with the concurrent feed signals of beacon channel respectively on a descending non-TS0 time slot of the TS0 of main carrier time slot and auxilliary carrier wave;
When terminal receives business on the TS0 of the auxilliary carrier wave of Serving cell time slot, on the described descending non-TS0 time slot of iso-frequency adjacent community, receive the signal of beacon channel;
Terminal is carried out the signal measurement of described iso-frequency adjacent community according to the signal of the beacon channel that receives.
2. communication means as claimed in claim 1 is characterized in that:
Described beacon channel be arranged on described TS0 time slot and described descending non-TS0 time slot No. 0 and 1 number road on.
3. a base station that is used for the TD-SCDMA system is characterized in that, comprising:
The beacon sending module, be used on a descending non-TS0 time slot of the TS0 of main carrier time slot and auxilliary carrier wave, the concurrent feed signals of beacon channel being set respectively, make when terminal receives business on the TS0 of the auxilliary carrier wave of Serving cell time slot, on the described descending non-TS0 time slot of iso-frequency adjacent community, receive the signal of beacon channel, and carry out the signal measurement of described iso-frequency adjacent community according to the signal of the beacon channel that receives.
4. base station as claimed in claim 3 is characterized in that:
Described beacon channel be arranged on described TS0 time slot and described descending non-TS0 time slot No. 0 and 1 number road on.
5. a terminal that is used for the TD-SCDMA system is characterized in that, comprising:
The beacon receiver module is used for receiving on the TS0 of the auxilliary carrier wave of Serving cell time slot when professional when this terminal, receives the signal of beacon channel on the descending non-TS0 time slot that is provided with beacon channel of the auxilliary carrier wave of iso-frequency adjacent community;
Measurement module is used for carrying out according to the signal of the beacon channel that receives the signal measurement of described iso-frequency adjacent community.
6. terminal as claimed in claim 5 is characterized in that:
Described beacon channel be arranged on the TS0 time slot of main carrier and described descending non-TS0 time slot No. 0 and 1 number road on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102369113A CN101697625B (en) | 2009-10-27 | 2009-10-27 | Communication method, base station and terminal for TD-SCDMA system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102369113A CN101697625B (en) | 2009-10-27 | 2009-10-27 | Communication method, base station and terminal for TD-SCDMA system |
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| Publication Number | Publication Date |
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| CN101697625A CN101697625A (en) | 2010-04-21 |
| CN101697625B true CN101697625B (en) | 2011-12-07 |
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| CN2009102369113A Expired - Fee Related CN101697625B (en) | 2009-10-27 | 2009-10-27 | Communication method, base station and terminal for TD-SCDMA system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1893344A (en) * | 2005-07-04 | 2007-01-10 | 上海原动力通信科技有限公司 | Multi-carrier-wave communication system TSO time-slot resource distribution method and grouped data transmission method |
| CN1917409A (en) * | 2005-08-18 | 2007-02-21 | 上海原动力通信科技有限公司 | Method for extending channel of shared data in HSDPA communication system in multiple frequency points |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1893344A (en) * | 2005-07-04 | 2007-01-10 | 上海原动力通信科技有限公司 | Multi-carrier-wave communication system TSO time-slot resource distribution method and grouped data transmission method |
| CN1917409A (en) * | 2005-08-18 | 2007-02-21 | 上海原动力通信科技有限公司 | Method for extending channel of shared data in HSDPA communication system in multiple frequency points |
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| CN101697625A (en) | 2010-04-21 |
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