CN102843749B - A kind of small region search method of multiplex broadcasting communication system and device - Google Patents
A kind of small region search method of multiplex broadcasting communication system and device Download PDFInfo
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- CN102843749B CN102843749B CN201110171586.4A CN201110171586A CN102843749B CN 102843749 B CN102843749 B CN 102843749B CN 201110171586 A CN201110171586 A CN 201110171586A CN 102843749 B CN102843749 B CN 102843749B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004891 communication Methods 0.000 title claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 239000000969 carrier Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
Abstract
The embodiment of the invention discloses a kind of small region search method of multiplex broadcasting communication system, the method is measured the broadcast singal RSRP of all bunches in community; From described measurement result, selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value, being defined as the access bunch for accessing; If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.The invention also discloses a kind of cell search apparatus of multiplex broadcasting communication system, the method and device by searching for all bunches in ShiUE community, instead of only search for specific clusters, thus enable best bunch resident of UE signal strength signal intensity in community.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of small region search method of multiplex broadcasting communication system and device.
Background technology
In the 3G system following 3GPP current or Long Term Evolution LTE/LTE-A system, only on main carrier or some specific carriers, synchronizing channel and broadcast channel are arranged for multi-carrier district, therefore in existing 3GPP agreement, Cell searching only searches for synchronizing channel and the broadcast channel of main carrier or some specific carriers, only accesses when main carrier or specific carriers signal strength signal intensity satisfy condition.
But for the communication system that this frequency range of national grid communication system discreteness is higher, for improving the availability of frequency spectrum, then for unit with relative continuous print frequency spectrum (be referred to as bunch or carrier wave), each bunch all arranges synchronizing channel and broadcast channel, each community containing one bunch or multiple frequency range nonoverlapping bunch, thus can form multiplex broadcasting communication system.
For this multiplex broadcasting communication system, if still carry out Cell searching according to the regulation of existing 3GPP agreement, then can because of only searching for specific bunch when Cell searching, and make user's terminal UE may signal strength signal intensity be not best bunch resident, or the resident failure in ShiUEGai community.
Summary of the invention
In view of this, the invention provides a kind of small region search method and device of multiplex broadcasting communication system, enable best bunch resident of UE signal strength signal intensity in community.
For reaching above-mentioned purpose, technical scheme of the present invention is specifically achieved in that
A small region search method for multiplex broadcasting communication system, the method comprises:
The broadcast singal RSRP of all bunches in community is measured;
From described measurement result, selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value, being defined as the access bunch for accessing;
If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.
Preferably, before determining access bunch, the method comprises further:
Receive the broadcasted content of in described community all bunches;
If there be optimum bunch, and in the broadcasted content of this optimum bunch, busy mark is set to busy, then from described measurement result, select other not put busy suboptimum bunch be defined as accessing bunch.
Preferably, the method comprises further:
If have optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to, then described optimum bunch is defined as the Stochastic accessing bunch for Stochastic accessing busy.
Preferably, the method comprises further:
If do not have optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to, then determine that this community cannot be accessed busy, initiates to change Target cell and again search for.
Preferably, described suboptimum bunch is: when having optimum bunch, is all bunches except optimum bunch; When not having optimum bunch, for described Stochastic choice bunch beyond all bunches.
A cell search apparatus for multiplex broadcasting communication system, this device comprises:
Measurement module, for measuring the broadcast singal RSRP of all bunches in community;
Selecting module, for selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value from described measurement result, being defined as the access bunch for accessing; If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.
Preferably, this device comprises further:
Broadcasted content module, for receiving the broadcasted content of in described community all bunches;
Described selection module, is connected with described broadcasted content module further, before determining access bunch, if there be optimum bunch, and in the broadcasted content of this optimum bunch, busy mark is set to busy, then from described measurement result, selects other not put busy suboptimum bunch be defined as access bunch.
Preferably, described selection module is further used for, and before determining access bunch, if there be optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then described optimum bunch is defined as the Stochastic accessing bunch for Stochastic accessing.
Preferably, described selection module is further used for, and before determining access bunch, if there be not optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then determine that this community cannot be accessed, and initiates to change Target cell and again searches for.
Preferably, described selection module, when there being optimum bunch, selects suboptimum bunch from all bunches except optimum bunch; When there not being optimum bunch, from described Stochastic choice bunch beyond all bunches select suboptimum bunch.
As seen from the above technical solution, the small region search method of this multiplex broadcasting communication system of the present invention and device, by searching for all bunches in ShiUE community, instead of only search for specific clusters, thus enable best bunch resident of UE signal strength signal intensity in community.
Accompanying drawing explanation
Fig. 1 is the small region search method flow chart of the multiplex broadcasting communication system of the embodiment of the present invention.
Fig. 2 is the access cluster selection method flow chart of the embodiment of the present invention.
Fig. 3 is the cell search apparatus structural representation of the multiplex broadcasting communication system of the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in more detail.
The present invention, mainly for the feature of multiplex broadcasting communication system, searches for all bunches in ShiUE community, instead of only searches for specific clusters, thus enables best bunch resident of UE signal strength signal intensity in community.
Fig. 1 is the small region search method flow chart of the multiplex broadcasting communication system of the embodiment of the present invention, and as shown in Figure 1, the method comprises the steps:
Step 101, measures the broadcast singal Reference Signal Received Power RSRP of all bunches in community;
Step 102, selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value, being defined as the access bunch for accessing from described measurement result;
If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.
After determining access bunch, access process afterwards will from this access bunch access.
In addition, if consider, bunch resident user is too much, busy mark in the broadcasted content of this bunch can be set to busy, at this moment again with this bunch of access, may cause harmful effect, institute is in this way before determining access bunch, the broadcasted content of all bunches can also be received further, if there be optimum bunch, and in the broadcasted content of this optimum bunch, busy mark is set to busy, then from described measurement result, select other not put busy suboptimum bunch be defined as access bunch.
Further, if there be optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then described optimum bunch is defined as the Stochastic accessing bunch for Stochastic accessing.After determining Stochastic accessing bunch, random access procedure afterwards will from bunch access of this Stochastic accessing.
Further, if there be not optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then determine that this community cannot be accessed, and after determining that this community cannot be accessed, can trigger the process changed Target cell and again search for.
Wherein, above-mentioned suboptimum bunch, when there being optimum bunch, can be all bunches except optimum bunch; When not having optimum bunch, can be described Stochastic choice bunch beyond all bunches.
Below for a specific example, existing a multiplex broadcasting communication system, comprise three discrete frequency ranges (bunch), three discrete frequency ranges are distributed in 223.025 ~ 228.000MHz, 228.025 ~ 230.000MHz and 230.025 ~ 235.000MHz respectively, 15,10 and 15 subbands are respectively had in three bunches, the bandwidth of subband is 25kHz, respectively in three bunches all arranges synchronizing channel and broadcast channel.
After UE start, the L1 of UE detects the synchronizing signal of 3 bunches and broadcast singal respectively, after completing frame, time slot, sign synchronization, measures the RSRP of each bunch of broadcast singal, and receive the broadcasted content of all bunches, measurement result and broadcasted content are reported L3.The selection that L3 carries out accessing bunch according to this measurement result and broadcasted content, concrete selects flow process as shown in Figure 2, comprises the steps:
Step 201, judges whether that the broadcast of multiple bunches exists, if so, then enters step 202, otherwise enter step 211;
Step 202, judges whether there be optimum bunch, if so, then enters step 203, otherwise enter step 206;
Step 203, judges that whether optimum bunch be busy, if so, then enters step 204, otherwise enter step 207;
Step 204, judges that whether all bunches be busy, if so, then enters step 205, otherwise enter step 208;
Step 205, is defined as Stochastic accessing bunch by optimum bunch, process ends.
Step 206, judges that whether all bunches be busy, if so, then enters step 209, otherwise enter step 210;
Step 207, is defined as access bunch, process ends by optimum bunch.
Step 208, is defined as access bunch, process ends by not putting busy suboptimum bunch.
Step 209, determines that this community cannot be accessed, and initiates to change Target cell and again searches for, process ends.
Step 210, is defined as access bunch, process ends by not putting busy suboptimum bunch.
Step 211, is defined as access bunch by unique bunch.
By above-mentioned flow process, can ensure UE can in community best bunch resident of signal strength signal intensity.
In addition, the present invention also provides a kind of cell search apparatus of multiplex broadcasting communication system, and as shown in Figure 3, this device comprises:
Measurement module 301, for measuring the broadcast singal RSRP of all bunches in community;
Selecting module 302, for selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value from described measurement result, being defined as the access bunch for accessing; If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.
Same for a bunch busy consideration, this device may further include:
Broadcasted content module 303, for receiving the broadcasted content of in described community all bunches;
Described selection module 302, is connected with described broadcasted content module 303 further, before determining access bunch, if there be optimum bunch, and in the broadcasted content of this optimum bunch, busy mark is set to busy, then from described measurement result, selects other not put busy suboptimum bunch be defined as access bunch.
Preferably, described selection module 302 can be further used for, and before determining access bunch, if there be optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then described optimum bunch is defined as the Stochastic accessing bunch for Stochastic accessing.
Preferably, described selection module 302 can be further used for, and before determining access bunch, if there be not optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then determine that this community cannot be accessed, and initiates to change Target cell and again searches for.
Wherein, described selection module 302, when there being optimum bunch, selects suboptimum bunch from all bunches except optimum bunch; When there not being optimum bunch, from described Stochastic choice bunch beyond all bunches select suboptimum bunch.
From the above embodiments, the small region search method of this multiplex broadcasting communication system of the present invention and device, by searching for all bunches in ShiUE community, instead of only search for specific clusters, thus enable best bunch resident of UE signal strength signal intensity in community.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. a small region search method for multiplex broadcasting communication system, is characterized in that, the method comprises:
The broadcast singal Reference Signal Received Power RSRP of all bunches in community is measured, obtains measurement result;
From described measurement result, selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value, being defined as the access bunch for accessing;
If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.
2. the small region search method of multiplex broadcasting communication system as claimed in claim 1, is characterized in that, before determining access bunch, the method comprises further:
Receive the broadcasted content of in described community all bunches;
If there be optimum bunch, and in the broadcasted content of this optimum bunch, busy mark is set to busy, then from described measurement result, select other not put busy suboptimum bunch be defined as accessing bunch.
3. the small region search method of multiplex broadcasting communication system as claimed in claim 2, it is characterized in that, the method comprises further:
If have optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to, then described optimum bunch is defined as the Stochastic accessing bunch for Stochastic accessing busy.
4. the small region search method of multiplex broadcasting communication system as claimed in claim 2, it is characterized in that, the method comprises further:
If do not have optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to, then determine that this community cannot be accessed busy, initiates to change Target cell and again search for.
5. the small region search method of multiplex broadcasting communication system as claimed in claim 2, it is characterized in that, described suboptimum bunch is: when having optimum bunch, is all bunches except optimum bunch; When not having optimum bunch, for described Stochastic choice bunch beyond all bunches.
6. a cell search apparatus for multiplex broadcasting communication system, is characterized in that, this device comprises:
Measurement module, for measuring the broadcast singal Reference Signal Received Power RSRP of all bunches in community, obtains measurement result;
Selecting module, for selecting the difference of a broadcast singal RSRP and other all broadcast singal RSRP to exceed the optimum bunch of predetermined threshold value from described measurement result, being defined as the access bunch for accessing; If the difference of neither one broadcast singal RSRP and other all broadcast singal RSRP exceedes predetermined threshold value, then Stochastic choice one bunch, be defined as the access bunch for accessing.
7. the cell search apparatus of multiplex broadcasting communication system as claimed in claim 6, it is characterized in that, this device comprises further:
Broadcasted content module, for receiving the broadcasted content of in described community all bunches;
Described selection module, is connected with described broadcasted content module further, before determining access bunch, if there be optimum bunch, and in the broadcasted content of this optimum bunch, busy mark is set to busy, then from described measurement result, selects other not put busy suboptimum bunch be defined as access bunch.
8. the cell search apparatus of multiplex broadcasting communication system as claimed in claim 7, it is characterized in that, described selection module is further used for, before determining access bunch, if there be optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then described optimum bunch is defined as the Stochastic accessing bunch for Stochastic accessing.
9. the cell search apparatus of multiplex broadcasting communication system as claimed in claim 7, it is characterized in that, described selection module is further used for, before determining access bunch, if do not have optimum bunch, and in the broadcasted content of all bunches, busy mark is all set to busy, then determine that this community cannot be accessed, initiate to change Target cell and again search for.
10. the cell search apparatus of multiplex broadcasting communication system as claimed in claim 7, is characterized in that,
Described selection module, when there being optimum bunch, selects suboptimum bunch from all bunches except optimum bunch; When there not being optimum bunch, from described Stochastic choice bunch beyond all bunches select suboptimum bunch.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1524367A (en) * | 2000-12-15 | 2004-08-25 | ˹���ķ��Ź�˾ | Multi-carrier communications with adaptive cluster configuration and switching |
| CN1902966A (en) * | 2003-10-30 | 2007-01-24 | 高通股份有限公司 | Restrictive reuse for a wireless communication system |
| CN101931965A (en) * | 2009-06-22 | 2010-12-29 | 大唐移动通信设备有限公司 | Method and device for reporting and acquiring received power and resource allocation of multiple cells |
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| JP5418042B2 (en) * | 2009-07-27 | 2014-02-19 | 富士通株式会社 | COMMUNICATION CONTROL DEVICE, MOBILE TERMINAL DEVICE, AND RADIO COMMUNICATION METHOD |
| WO2011054380A1 (en) * | 2009-11-04 | 2011-05-12 | Nokia Siemens Networks Oy | Method and device for determining a cooperation area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1524367A (en) * | 2000-12-15 | 2004-08-25 | ˹���ķ��Ź�˾ | Multi-carrier communications with adaptive cluster configuration and switching |
| CN1902966A (en) * | 2003-10-30 | 2007-01-24 | 高通股份有限公司 | Restrictive reuse for a wireless communication system |
| CN101931965A (en) * | 2009-06-22 | 2010-12-29 | 大唐移动通信设备有限公司 | Method and device for reporting and acquiring received power and resource allocation of multiple cells |
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