CN101166361A - A cell switching method and system in radio communication system - Google Patents
A cell switching method and system in radio communication system Download PDFInfo
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- CN101166361A CN101166361A CNA2006101528180A CN200610152818A CN101166361A CN 101166361 A CN101166361 A CN 101166361A CN A2006101528180 A CNA2006101528180 A CN A2006101528180A CN 200610152818 A CN200610152818 A CN 200610152818A CN 101166361 A CN101166361 A CN 101166361A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/24—Reselection being triggered by specific parameters
- H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
Abstract
In the method, each subzone broadcasts ID sign of self-subzone. The method also includes following steps: sending neighboring area scrambling code (NASC) of current subzone and command for parsing ID sign of subzone of neighboring areas to terminal, and NASC needed to parse ID sign of subzone is indicated in the said command; the terminal measures signal quality of NASC of current subzone, and parses out at least one ID sign of subzone selectively from NASC needed to parse; based on result of measuring signal and parsed ID sign of subzone to switch to target subzone from current subzone. The invention also discloses the subzone switch system of wireless communication system. The invention can solve issue that subzone is unable to be switched caused by quantitative capability limitation of neighboring area.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly, the present invention relates to a kind of cell switching method and system of wireless communication system.
Background technology
Along with the development of mobile communication, need the covering of three-dimensional to satisfy growing covering and capacity requirement.General macrocellular (Macro Cell) covers with solving large tracts of land, and cellulor (Micro Cell) is used for satisfying the degree of depth and covers and focus high-speed data service demand.In third generation partner program (3GPP) and the follow-up evolution of 3GPP2, mobile broadband is one of its of paramount importance target service.
In order to realize popularizing based on the mobile broadband of 3GPP/3GPP2 system, base station form and deployment way must satisfy user's demand on the performance cost.Using for reference the successful experience that 802.11 WAP (wireless access point) (AP) solve wireless nomadic wideband data, is the key product that reaches this target based on the wireless access point AP of 3GPP/3GPP2 system.
Macrocellular and cellulor are overlapping deployment geographically, have traditional macrocellular layer and new cellulor layer in the network simultaneously.May in a macrocellular coverage, up to a hundred cellulors have been disposed.Such as, when a macrocellular covers several residential quarters, and in these several residential quarters,, can reach hundreds of if be that unit carries out micro radio access point AP and disposes with the family.
Fig. 1 is the deployment schematic diagram of macrocellular and cellulor layer in the prior art.The deployment way of this Hierarchical Network can cause the adjacent area number sharp increase of macrocellular, and simple and macrocellular has the AP of neighbouring relations will reach hundreds of.Yet present global system for mobile communications (GSM) and the adjacent area quantity that third generation partner program (3GPP)/universal mobile telecommunications system (UMTS) can be supported are 32; The adjacent area quantity that code division multiple access (CDMA) 2000 is supported is 40.Obviously, present adjacent area supports number and relevant therewith nearby region measurement mode, measurement report to report pattern, all can not satisfy above-mentioned networking demand far away, promptly can't realize normal two-way switching.
The adjacent area capability defect that present 3GPP/UMTS supports is more specifically described below.
In network environment as shown in Figure 1, because each AP coverage is very little, be more or less the same under the adjacent area environment of each AP and the original single layer network environment, original adjacent area tenability can satisfy the outside switching from AP.Otherwise the adjacent area environment of each macrocellular is compared with former individual layer net, differs very big, thereby can't realize from the outside switching of macrocellular.
Particularly, in 3GPP/UMTS, come distinguishing cell with frequency and scrambler.When needing terminal that the field intensity of adjacent cell is measured, system can sending measuring control command message give terminal, carries frequency and scrambler that the sub-district is measured in expectation in this measurement control order message.The adjacent area scrambler quantity of corresponding each frequency is in 32.
Owing to only discern and distinguish the adjacent area by frequency and scrambler, the contiguous AP that supposes macrocellular has 100, so at first, when the scrambler of these 100 AP sub-districts has nothing in common with each other, in the tabulation of different-frequency measure Target cell, can't carry 100 complete scramblers, cause to realize the switching of macrocellular to AP; In addition, suppose that 100 AP sub-districts take the scrambler multiplex mode, only use 32 scramblers, part A P cell reuse scrambler.Only issue this 32 scramblers in the tabulation of different-frequency measure Target cell like this, terminal also only needs to measure these 32 scramblers.But, owing to only contain cell identification information such as scrambler and frequency in the cell measurement results table, and system can't discern the pairing AP of the scrambler sub-district among the measurement report result, still can't finish switching.
This shows, when the wireless access point AP scale based on 3GPP/3GPP2 is disposed, and and traditional macrocellular when forming the chpn web frame, the adjacent area ability of Cellular Networks can't be supported the normal switching of macrocellular to AP at present, thereby cause the AP can't be on a large scale commercial, also directly incured loss through delay 3GPP/3GPP2 eat dishes without rice or wine ability evolution at the popularizing of mobile broadband service.
More than describe existing adjacent area capability problems among the present 3GPP/UMTS in detail.But, the problems referred to above also not only appear among the 3GPP/UMTS.General meaning causes to the adjacent area quantity capabilities limits generality of wireless communication system and can't carry out the sub-district switching.
Summary of the invention
In view of this, the embodiment of the invention proposes a kind of cell switching method of wireless communication system on the one hand, can't switching problem to solve the sub-district of being caused by adjacent area quantity capabilities limits.
The sub-district switched system that proposes a kind of wireless communication system on the other hand of the embodiment of the invention can't switching problem to solve the sub-district of being caused by adjacent area quantity capabilities limits.
For achieving the above object, embodiment of the invention technical scheme on the one hand is achieved in that
A kind of cell switching method of wireless communication system, the identity sign of each this sub-district of Cell Broadcast CB in this method, this method is further comprising the steps of:
The adjacent area scrambler from current area to terminal and the adjacent area cell identity sign that send are resolved instruction, resolve the instruction middle finger at described adjacent area cell identity sign and are shown with the adjacent area scrambler that needs to resolve the cell identity sign;
Terminal is measured the signal quality of the adjacent area scrambler of described current area, and resolves instruction according to described adjacent area cell identity sign, optionally parses at least one cell identity sign from the described adjacent area scrambler that needs execution to resolve;
According to described signal quality measurement result and the cell identity sign that parses, switch to Target cell from described current area.Embodiment of the invention technical scheme on the other hand is achieved in that
A kind of sub-district switched system of wireless communication system, this sub-district switched system comprises:
The base station, be used to broadcast the identity sign of each sub-district, the adjacent area scrambler from current area to terminal and the adjacent area cell identity sign that send are resolved instruction, described adjacent area cell identity sign is resolved the instruction middle finger and is shown with the sub-district, adjacent area that need parse the cell identity sign, described base station is further used for switching to Target cell according to the signal quality measurement result of terminal to report and the cell identity sign that parses from current area;
Terminal, be used to measure the signal quality of the adjacent area scrambler of current area, and according to described adjacent area cell identity sign parsing instruction, from the described adjacent area scrambler that needs execution to resolve, optionally parse at least one cell identity sign, and described signal quality measurement result and the cell identity sign that parses are reported to the base station.
From technique scheme as can be seen, in the present invention, the identity sign of each this sub-district of Cell Broadcast CB; Have adjacent area cell identity sign to resolve instruction to the terminal transmission, and wherein indication have the adjacent area scrambler that needs parsing cell identity sign; Terminal is resolved instruction according to adjacent area cell identity sign, carries out the adjacent area scrambler of resolving optionally parsing at least one cell identity sign from needs; According to described signal quality measurement result and the cell identity sign that parses, switch to Target cell then from current area.This shows, use after the present invention, in the measurement report of terminal to report, at the multiplexing Target cell of scrambler, scrambler and signal quality had both been comprised, the cell identity sign that also comprises this signal, so the present invention can judge Target cell and carry out switching, can't switching problem so solved the sub-district of being caused by adjacent area quantity capabilities limits.
Description of drawings
Fig. 1 is the deployment schematic diagram of macrocellular and cellulor layer in the prior art.
Fig. 2 is the cell switching method exemplary flow chart according to the wireless communication system of the embodiment of the invention.
Fig. 3 is according to the BCH of the embodiment of the invention mapping schematic diagram to PCCPCH.
Fig. 4 is the demonstrative structure figure according to the sub-district switched system of the wireless communication system of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 2 is the cell switching method exemplary flow chart according to the wireless communication system of the embodiment of the invention.
As shown in Figure 2, this method comprises:
Step 201: the identity sign of each this sub-district of Cell Broadcast CB (cell identity).
Here, the identity sign of each this sub-district of broadcasting, preferred cycle ground, sub-district, thus make terminal can receive the identity sign of each sub-district.Broadcasting frequency for periodic broadcast there is no special qualification, as long as can guarantee the instantaneity of whole system.
When wireless communication system was the 3GPP/UMTS system, broadcast channel BCH broadcast system message can be passed through in each sub-district, should comprise the cell identity sign in this system message.
When wireless communication system was the 3GPP/LTE system, broadcast channel BCH and/or synchronous channel SCH broadcast system message can be passed through in each sub-district, should comprise the cell identity sign in this system message.
Step 202: the adjacent area scrambler from current area to terminal and the adjacent area cell identity sign that send are resolved instruction, resolve the instruction middle finger at this adjacent area cell identity sign and are shown with the adjacent area scrambler that needs to resolve the cell identity sign.
Here, cell identity sign in adjacent area is resolved to instruct and preferably is expanded in the cell information table of each adjacent area scrambler.Terminal can be known the sub-district, adjacent area that need parse the cell identity sign after receiving that this adjacent area cell identity sign is resolved instruction.
Step 203: terminal is measured the signal quality of the adjacent area scrambler of described current area, and resolves instruction according to described adjacent area cell identity sign, optionally parses at least one cell identity sign from the described adjacent area scrambler that needs execution to resolve.
Preferably, indication needs to resolve in the adjacent area scrambler of cell identity sign from cell identity sign parsing instruction, terminal is determined sub-district, predetermined number adjacent area according to the adjacent area descending order of scrambler signal strength signal intensity, and parses the cell identity sign of this sub-district, predetermined number adjacent area.Wherein, for predetermined number, the present invention is not particularly limited, and is preferably in 1 to 6 any, even can be 1.When being 1, this moment, terminal parses went out the cell identity sign of the strongest scrambler of signal strength signal intensity.
Step 204:, switch to Target cell from described current area according to described signal quality measurement result and the cell identity sign that parses.
Particularly, the present invention can be adapted to various sub-districts of being caused by adjacent area quantity capabilities limits can't handoff scenario in.Such as, under certain exemplary scenarios: after the wireless access point AP scrambler under the macrocellular was multiplexing, behind the scrambler and signal quality of the contiguous AP of terminal to report macrocellular sub-district, the Target cell of scrambler correspondence can't be judged by system.
At this moment,, need system in the measurement target cell list, the scrambler of these AP all to be issued, so unrestrictedly increase measurement target cell list space and obviously do not possess operability if the AP scrambler under macrocellular is not multiplexing.
For the Target cell in unique identification measurement report, when terminal when the scrambler field strength measurement is specified in the adjacent area, according to measuring the control indication, should selectivity resolve the cell identity sign of this scrambler signal.Like this, in the measurement report of terminal to report,, both comprised scrambler and signal quality, and also comprised the cell identity sign of this signal, thereby system can prepare to judge Target cell and adjudicate switching at the multiplexing Target cell of this type of scrambler.
At 3GPP/UMTS system and 3GPP/LTE system, provide the detailed protocol of the embodiment of the invention respectively in detail below.
First embodiment: the present invention is applied in the 3GPP/UMTS scheme.
According to top described, among the UMTS, the cell identity sign only issues in system message 3 and 4 at present.And System Frame Number (SFN) is broadcasted in broadcast channel (BCH).Terminal when needs obtain Serving cell and Target cell time difference, can read the SFN information among the BCH of adjacent area in nearby region measurement.
At present, the channel coding method of BCH as shown in Figure 3.As can be seen from Figure 3, BCH transmission channel TTI is 20ms, need take two PCCPCH physical frames.Corresponding transmission channel BCH20ms TTI bearing system message body (part illustrates) as shown in table 1.
| The cell type | Type?and reference |
| Message type/ type of message | |
| The SFNprime/ System Frame Number | 0 to 4094, be step-length with 2 |
| CHOICE Segment combination/ piecemeal merges to be selected | |
| ＞ |
Table 1
Contain SFN and other system message blocks (host system message block, Scheduling Block, block of information etc.) in the system message body.
In the embodiment of the invention, on this basis, increase a cell after SFN information, just cell identity sign (cell identity) is as shown in table 2 below.Table 2 is the UMTS system message body surface (part illustrates) according to the embodiment of the invention.
| The cell type | Type?and reference |
| Message type/ type of message | |
| The SFNprime/ System Frame Number | 0 to 4094, be step-length with 2 |
| Cell identity/ cell identity sign | 28 bits/M bit |
| CHOICE Segment combination/ piecemeal merges to be selected | |
| ＞ |
Table 2
Wherein the bit number of Cell identity field can shorten to 16bit, and can indicate 65536 sub-districts this moment, consistent with the CI partial amt among the Cell Global Identification CGI.
For consistent, the bit number of Cell identity field can also be defined as 28bit with the existing parameter of 3GPP.The principle of figure place definition is to guarantee that a macrocellular coverage AP sub-district can according to actual networking scene analysis, can be retrained number of bits and represent the sub-district number at least more than 10000 by unique identification.
Terminal is resolved cell identity in nearby region measurement for convenience, and preferred cell identity is independent in message body, is not placed in some concrete message blocks.Simultaneously, according to the coded system of present BCH channel, can behind the SFN of 11bit, carry cell identity with 28bit.Cooperate therewith, in system message 3 and system message 4, deletion cell identity cell is to save interface-free resources.
For fear of unnecessary measurement, in the cell information table, increase cell Read cell identityindicator (reading the cell identity indication).When reading cell identity and be designated as very (true), the cell identity sign among the BCH of this scrambler of terminal parses (Cell identity).Table 3 is the UMTS cell information table (part illustrates) according to the embodiment of the invention.
| The cell title | Quantitative range | Type and reference |
| The indication of Read SFN indicator/ reading system frame number | Boolean | |
| Read cell identity indicator/ reads the cell identity indication | Boolean | |
| CHOICE mode/ pattern is chosen | ||
| ＞FDD/ Frequency Division Duplexing (FDD) | ||
| ＞＞Primary CPICH info/ dominant pilot information | Referring to the dominant pilot information table |
Table 3
Can determine whether reporting the cell identity (cellidentity) of this scrambler signal according to the Cell Identity reporting indicator in the cell measurement reporting category table (cell identification information report indication).Also can delete Cell Identity reportingindicator in the cell measurement reporting category table (cell identification information report indication), and directly decide the measurement of cell identity and report according to the indication of the measurement in the cell information table.Table 4 is the UMTS cell measurement reporting category table (part illustrates) according to the embodiment of the invention.
Table 4
In the present embodiment, terminal needs SCH at first synchronously in order to read BCH information, and spended time is longer.
In order to save terminal resource, terminal is preferably resolved cell identity sign among its BCH to the cell scrambling that needs to read the cell identity sign in preceding 6 of the dominant pilot scrambler signal quality that measures in this frequency.Even terminal only need read the cell identity sign of strong scrambler that needs to read the cell identity sign in these 6 scramblers the strongest.
To sum up, in the present embodiment, in UMTS system message body, increase " cell identity/ cell identity sign " field in advance; In UMTS cell information table, increase " Read cell identityindicator/ reads the cell identity indication " field; Deletion in UMTS cell measurement reporting category table " Cell Identity reporting indicator/ cell identification information report indication " field.
Then, system at first issues the adjacent area scrambler of current area and scrambler sub-district, adjacent area sign and resolves indication and give terminal; The signal strength signal intensity of the given scrambler of terminal test, and the scrambler sub-district, adjacent area that issues according to system sign resolves indication, selectivity are resolved identity sign in the BCH cell channel in the scrambler signal; The terminal to report measurement result comprises signal quality and cell identity sign in measurement result then, and last base station switches to Target cell again according to described signal quality and cell identity sign from current area.
Second embodiment: the present invention is applied in the 3GPP/LTE scheme.
In the 3GPP/LTE scheme, synchronous channel SCH and broadcast channel BCH can carry out the broadcasting of sub-district related news.Because the special status of SCH channel, promptly terminal all needs synchronously and resolves the SCH channel before resolving sub-district BCH channel, and therefore the cell identity sign being placed in the SCH channel is preferable methods comparatively.
When the SCH channel adopted classification synchronizing channel Hierarchical SCH scheme, the cell identity sign can be placed on second synchronizing channel secondary SCH.
Table 5 is for carrying the signal table of cell identity sign among the LTE secondary SCH according to the embodiment of the invention.
| The cell type | Type?and reference |
| The new cell identity of New Cell identity/ | 16 bits/M bit |
| Cell id/ cell scrambling | |
| Other/ other |
Table 5
Wherein, the selection principle of the concrete figure place of Cell identity is similar to aforesaid 3GPP/LTE.Replace cell identity flag bit number with M below, M is generally fixing in agreement.
If the SCH channel can't carry these cell identity flag bits, the cell identity flag bit can be placed in the system message body, on each BCH transmission block, send.When the cell identity sign is placed in the system message body, definition can with the 3GPP/UMTS scheme of above-mentioned first embodiment in the same, the cell identity sign is placed on the fixed position of each BCH TTI, such as the most preceding M bit.
Table 6 is for showing (part illustrates) according to BCH piece signal of the invention process.
| The cell type | Type?and reference |
| The new cell identity of New Cell identity/ | 16 bits/M bit |
| CHOICE Segment combination/ piecemeal merges to be selected | |
| ＞ |
Table 6
Because basic TTI is 1ms among the LTE, wireless sub-frame 0.5ms, promptly a TTI contains two wireless sub-frames.In order to save SCH and BCH resource, the cell identity sign of M bit can be placed in n SCH or the BCH transmission block, n can be divided exactly by the number of bits M of cell identity sign.
Such as, when n=4, promptly divide 8 wireless sub-frames of 4 transmission blocks to transmit M bit, each transmission block just only needs transmission M/4bit cell identification information like this.
So when definition was transmitted M bit cell identity sign with n transmission block, every 2n wireless sub-frame, the cell identity sign was repeated once; The assumed wireless subframe numbers numbering of starting from scratch, the total bit of cell identity sign first (n part altogether) is in the transmission block of 2n nature several times (integer more than or equal to zero) beginning in radio sub-frame number so.N can fix in agreement, or issues as a global system message parameter (such as a service area).
Such as, when n is 4,2n is 8 o'clock, with 0,8,16,24,32 ... wait 8 to be on the transmission block that begins of the wireless sub-frame of natural number multiple, carrying the M/n of a first bit of M bit cell identity sign.
When M is 16, during n=4, this moment, the cell identity sign can indicate 65536 sub-districts, and each transmission block only need transmit the 4bit cell identification information, has transmitted this 16bit information, needs 4 transmission blocks, i.e. 4ms.
Table 7 is for when transmitting the cell identity sign with partitioned mode, and each SCH/BCH transmission block carries part cell identity flag bit sample table.
| The cell type | Type?and reference |
| Partial Cell identity/ part cell identity | The M/n bit |
Table 7
M/n position bit can arrange to be placed on the most preceding M/n bit of SCH/BCH message body.
Table 8 is for when transmitting the cell identity sign with partitioned mode, and block count n issues sample table as the global system parameter.
| The cell type | Type?and reference |
| Partial Cell identity No./ |
3 bits |
Table 8
After terminal is known n, M and current measurement sub-district radio sub-frame number, receive the bit of n transmission block and resolution contract position arbitrarily, just can obtain the cell identity sign of measured sub-district through combination.
Simultaneously, in the cell information table in the measurement control messages that the LTE system issues, carry cell Read cell identity indicator/ and read the cell identity indication, whether need to resolve and report the cell identity sign of this scrambler signal with indicating terminal.
Table 9 is according to the embodiment of the invention, is used to measure the cell information table (part illustrates) of control messages in 3GPP/LTE.
| The cell title | Quantitative range | Type and reference |
| Read new cell identity indicator/ reads the cell identity indication | Boolean |
Table 9
Terminal is in order to read SCH/BCH information, and spended time is longer.In order to save terminal resource, terminal only needs cell identity sign among its SCH/BCH is resolved in the sub-district that needs to read the cell identity sign in preceding 6 of the dominant pilot scrambler signal quality that measures in this frequency; Even only need read the cell identity sign of strong scrambler that needs to read the cell identity sign in these 6 scramblers the strongest.
Such as, terminal is to measuring 1,2 in the control messages, 3 ... No. 32 the dominant pilot scrambler is measured, and sorts according to signal strength, in 6 the strongest dominant pilots, such as 1,2,3,4,5,6, wherein 1 and No. 2 scrambler indication needs to resolve the cell identity sign, and this moment, terminal only needed 1 and No. 2 scrambler is read the cell identity sign; Also the definable terminal only need read in 1 and 2 scramblers cell identity sign of strong scrambler.
In 3GPP/LTE, the cataloged procedure of cell identity sign generally comprises: at first define cell identity sign figure place M, then the M bit that defines is distributed in n BCH or SCH transmission block or the DL-SCH transmission block and transmits, and n issues as global parameter, it is assigned address in BCH beginning of 2n nature several times or SCH transmission block or the DL-SCH transmission block that first's bit in the n partial information is placed on radio sub-frame number, and other n-1 partial bit are placed as in a follow-up n-1 BCH or the SCH transmission block successively; Terminal receives n BCH or SCH transmission block or DL-SCH transmission block arbitrarily, and the bit of resolution contract position, obtains measured sub-district cell identity through combination.
To sum up, in the present embodiment, at first in LTE secondary SCH, increase " the new cell identity of New Cellidentity/ " field,, this field is sent on the BCH transmission block if wherein the SCH channel can't carry " the new cell identity of New Cell identity/ "; In the cell information table in the measurement control messages that the LTE system issues, carry " Read cell identity indicator/ reads the cell identity indication " field then.
Then, system at first issues the adjacent area scrambler of current area and adjacent area scrambler cell identity and resolves indication and give terminal; The signal strength signal intensity of the given scrambler of terminal test, and the parsing that issues according to system indication, selectivity are resolved cell identity sign cell identity in the BCH channel in the scrambler signal; The terminal to report measurement result comprises signal quality and cell identity sign cell identity in the measurement result then; Last base station switches to Target cell again according to described signal quality and cell identity sign from current area.
Wherein, in 3GPP/LTE, the cell identity sign can also same mode transmit in DSCH Downlink Shared Channel DL-SCH; Or adopt new channel to transmit the cell identity sign specially, be in terminal under the activated state and can conveniently read cell identity sign in these channels.
After the technical scheme (at 3GPP/UMTS) that adopts first embodiment, at Fig. 1 networking scene, carry out scrambler in the AP minizone multiplexing, and when AP uses the scrambler sum to be no more than 32, macrocellular is by measurement target cell information table, come control terminal whether to the dominant pilot scrambler signal resolution in this table, report its cell identity sign cell identity.
After adopting the technical scheme of first embodiment, in UMTS, terminal capability can be measured with the cell identity sign among the adjacent area BCH under the frequency state at present; After adopting double-receiver, also can measure the cell identity sign among the BCH of alien frequencies adjacent area.
After the technical scheme (at 3GPP/LTE) that adopts second embodiment, at Fig. 1 scene, carry out scrambler in the AP minizone multiplexing, AP uses the scrambler sum to be no more than the LTE adjacent area and issues restriction number (such as consistent with UMTS 32 or expand to 64), macrocellular is by measurement target cell information table, come control terminal whether to the dominant pilot scrambler signal resolution in this table, report its cell identity sign cell identity.
After adopting the technical scheme of second embodiment, in LTE, basic TTI has only 1ms, cancel compact model and adopt the method for scheduling to measure alien frequencies (different system), add the enhancing of terminal capability, no matter terminal is the cell identity sign of measuring and resolving among the SCH of adjacent area, or the cell identity sign among the BCH, can not become problem.
Simultaneously, in order better to accomplish the plug and play of AP sub-district, system side does not need to safeguard that macrocellular is the fixedly neighboring BS relationship of target with the AP sub-district, and system can all issue the employed dominant pilot scrambling code information in AP sub-district in the measurement target cell list.According to AP sub-district dominant pilot information, signal quality and the cell identity sign of terminal to report, the judgement Target cell finally reaches the switching purpose from macrocellular to the AP sub-district.
The invention allows for a kind of sub-district switched system of wireless communication system.Fig. 4 is the demonstrative structure figure according to the sub-district switched system of the wireless communication system of the embodiment of the invention.
As shown in Figure 4, this system comprises:
Preferably, described base station 401 is used for the identity sign of each sub-district of periodic broadcast.
When wireless communication system was the 3GPP/UMTS system, base station 401 was used for the broadcast system message by broadcast channel BCH, comprises the cell identity sign in this system message.
When wireless communication system was the 3GPP/LTE system, base station 401 was used for comprising the cell identity sign in this system message by broadcast channel BCH or synchronous channel SCH or DL-SCH channel broadcast system message.
Particularly, the present invention can be applied to macro cells and switch in the scene of cellulor sub-district, wherein the cellulor sub-district can be various WAP (wireless access point).And the present invention can also be applied in 3GPP2 or follow-up other the mobile communication system.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. the cell switching method of a wireless communication system is characterized in that, the identity sign of each this sub-district of Cell Broadcast CB in this method, and this method is further comprising the steps of:
The adjacent area scrambler from current area to terminal and the adjacent area cell identity sign that send are resolved instruction, resolve the instruction middle finger at described adjacent area cell identity sign and are shown with the adjacent area scrambler that needs to resolve the cell identity sign;
Terminal is measured the signal quality of the adjacent area scrambler of described current area, and resolves instruction according to described adjacent area cell identity sign, optionally parses at least one cell identity sign from the described adjacent area scrambler that needs execution to resolve;
According to described signal quality measurement result and the cell identity sign that parses, switch to Target cell from described current area.
2. according to the cell switching method of the described wireless communication system of claim 1, it is characterized in that the identity of described each this sub-district of Cell Broadcast CB is masked as: the identity sign of this sub-district is periodically broadcasted in each sub-district.
3. the cell switching method of wireless communication system according to claim 1 is characterized in that, described adjacent area cell identity sign is resolved instruction and is expanded in the cell information table of each adjacent area scrambler.
4. the cell switching method of wireless communication system according to claim 1 is characterized in that, the described cell identity that optionally parses is masked as:
Indication needs to resolve in the adjacent area scrambler of cell identity sign from cell identity sign parsing instruction, determines sub-district, predetermined number adjacent area according to the adjacent area descending order of scrambler signal strength signal intensity, and parses the cell identity sign of this sub-district, predetermined number adjacent area.
5. the cell switching method of wireless communication system according to claim 4 is characterized in that, described predetermined number is any in 1 to 6.
6. the cell switching method of wireless communication system according to claim 5 is characterized in that, described predetermined number is 1.
7. the cell switching method of wireless communication system according to claim 1 is characterized in that, described wireless communication system is third generation partner program 3GPP/ universal mobile telecommunications system UMTS, and the identity sign of described each this sub-district of Cell Broadcast CB comprises:
Each sub-district comprises the cell identity sign by broadcast channel BCH broadcast system message in this system message.
8. the cell switching method of wireless communication system according to claim 1 is characterized in that, described wireless communication system is a third generation partner program 3GPP/ Long Term Evolution LTE system, and the identity sign of described each this sub-district of Cell Broadcast CB comprises:
Each sub-district comprises the cell identity sign by broadcast channel BCH or synchronous channel SCH or DSCH Downlink Shared Channel DL-SCH broadcast system message in this system message.
9. the cell switching method of wireless communication system according to claim 1 is characterized in that, described wireless communication system is the 3GPP/LTE system, and the identity sign of described each this sub-district of Cell Broadcast CB comprises:
Definition cell identity sign figure place M is distributed to the M bit that defines in n BCH transmission block or SCH transmission block or the DL-SCH transmission block then and transmits, and wherein n issues as global parameter;
With the first's bit in the n partial bit, be placed on radio sub-frame number and be BCH transmission block that 2n nature several times begin or the assigned address in SCH transmission block or the DL-SCH transmission block, other n-1 partial bit are placed as in follow-up n-1 BCH transmission block or SCH transmission block or the DL-SCH transmission block successively;
Terminal receives n BCH transmission block or SCH transmission block or DL-SCH transmission block arbitrarily, and the bit of resolution contract position, obtains the identity sign of sub-district through combination.
10. according to the cell switching method of each described wireless communication system among the claim 1-9, it is characterized in that described current area is a macro cells, described Target cell is the cellulor sub-district.
11. the cell switching method of wireless communication system according to claim 10 is characterized in that, described cellulor sub-district is a WAP (wireless access point).
12. the sub-district switched system of a wireless communication system is characterized in that, this sub-district switched system comprises:
The base station, be used to broadcast the identity sign of each sub-district, the adjacent area scrambler from current area to terminal and the adjacent area cell identity sign that send are resolved instruction, described adjacent area cell identity sign is resolved the instruction middle finger and is shown with the adjacent area scrambler that needs to resolve the cell identity sign, described base station is further used for switching to Target cell according to the signal quality measurement result of terminal to report and the cell identity sign that parses from current area;
Terminal, be used to measure the signal quality of the adjacent area scrambler of current area, and according to described adjacent area cell identity sign parsing instruction, from the described adjacent area scrambler that needs execution to resolve, optionally parse at least one cell identity sign, and described signal quality measurement result and the cell identity sign that parses are reported to the base station.
13. the sub-district switched system of wireless communication system according to claim 12 is characterized in that,
Described base station is used for the identity sign of each sub-district of periodic broadcast.
14. the sub-district switched system of wireless communication system according to claim 12 is characterized in that,
Described terminal, being used for resolving instruction indication needs from the cell identity sign resolves the adjacent area scrambler of cell identity sign, determine sub-district, predetermined number adjacent area according to the adjacent area descending order of scrambler signal strength signal intensity, and parse the cell identity sign of this sub-district, predetermined number adjacent area.
15. the sub-district switched system of wireless communication system according to claim 14 is characterized in that, described predetermined number is any in 1 to 6.
16. the sub-district switched system of wireless communication system according to claim 15 is characterized in that, described predetermined number is 1.
17. the sub-district switched system of wireless communication system according to claim 12, described wireless communication system are the 3GPP/UMTS system, wherein
Described base station is used for the broadcast system message by broadcast channel BCH, comprises the cell identity sign in this system message.
18. the sub-district switched system of wireless communication system according to claim 12, described wireless communication system are the 3GPP/LTE system, wherein
Described base station is used for comprising the cell identity sign in this system message by broadcast channel BCH or synchronous channel SCH or DSCH Downlink Shared Channel DL-SCH broadcast system message.
19. the sub-district switched system according to each described wireless communication system among the claim 12-18 is characterized in that, described current area is a macro cells, and described Target cell is the cellulor sub-district.
20. the sub-district switched system of wireless communication system according to claim 19 is characterized in that, described cellulor sub-district is a WAP (wireless access point).
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| CN2006101528180A CN101166361B (en) | 2006-10-20 | 2006-10-20 | A cell switching method and system in radio communication system |
| PCT/CN2007/070916 WO2008046356A1 (en) | 2006-10-20 | 2007-10-17 | Cells handovering system of wireless communcation system, device and method thereof |
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| CN2006101528180A CN101166361B (en) | 2006-10-20 | 2006-10-20 | A cell switching method and system in radio communication system |
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| CN101166361B CN101166361B (en) | 2010-06-09 |
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| CN102037759A (en) * | 2008-06-27 | 2011-04-27 | Ubiquisys有限公司 | Scrambling code selection for a femtocell base station |
| CN102057294A (en) * | 2008-06-06 | 2011-05-11 | 上海贝尔股份有限公司 | Device and method for indoor wireless positioning in a distributed antenna system |
| CN102638822A (en) * | 2008-06-24 | 2012-08-15 | 华为技术有限公司 | Measurement control method, terminal, network-side device and network system |
| CN102239712B (en) * | 2009-05-07 | 2014-12-24 | 华为技术有限公司 | Method and apparatus for indicating neighbor cell information of different system |
| CN106535110A (en) * | 2015-09-10 | 2017-03-22 | 展讯通信（上海）有限公司 | Mobile terminal and positioning method thereof |
| CN106535321A (en) * | 2015-09-10 | 2017-03-22 | 展讯通信（上海）有限公司 | Mobile terminal and positioning method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI109510B (en) * | 1997-02-28 | 2002-08-15 | Nokia Corp | Handover and call set-up in a mobile communication system |
| CN1281010C (en) * | 2001-12-11 | 2006-10-18 | 中兴通讯股份有限公司 | Decision method for periodic report and channel interval hard switching |
| CN1219380C (en) * | 2002-01-24 | 2005-09-14 | 华为技术有限公司 | Method for automatic maintenance neighborlist in CDMA system |
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| CN102057294A (en) * | 2008-06-06 | 2011-05-11 | 上海贝尔股份有限公司 | Device and method for indoor wireless positioning in a distributed antenna system |
| CN102638822A (en) * | 2008-06-24 | 2012-08-15 | 华为技术有限公司 | Measurement control method, terminal, network-side device and network system |
| CN102037759A (en) * | 2008-06-27 | 2011-04-27 | Ubiquisys有限公司 | Scrambling code selection for a femtocell base station |
| CN102037759B (en) * | 2008-06-27 | 2014-04-02 | Ubiquisys有限公司 | Scrambling code selection for a femtocell base station |
| US8797975B2 (en) | 2008-06-27 | 2014-08-05 | Ubiquisys Limited | Scrambling code selection |
| CN102239712B (en) * | 2009-05-07 | 2014-12-24 | 华为技术有限公司 | Method and apparatus for indicating neighbor cell information of different system |
| CN106535110A (en) * | 2015-09-10 | 2017-03-22 | 展讯通信（上海）有限公司 | Mobile terminal and positioning method thereof |
| CN106535321A (en) * | 2015-09-10 | 2017-03-22 | 展讯通信（上海）有限公司 | Mobile terminal and positioning method thereof |
| CN106535110B (en) * | 2015-09-10 | 2019-07-05 | 展讯通信（上海）有限公司 | Mobile terminal and its localization method |
| CN106535321B (en) * | 2015-09-10 | 2019-11-12 | 展讯通信（上海）有限公司 | Mobile terminal and its localization method |
| CN109392032A (en) * | 2017-08-07 | 2019-02-26 | 中国移动通信有限公司研究院 | Frequency handover processing method, the network equipment, terminal and computer storage medium |
| CN109392032B (en) * | 2017-08-07 | 2021-08-06 | 中国移动通信有限公司研究院 | Frequency point switching processing method, network equipment, terminal and computer storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008046356A1 (en) | 2008-04-24 |
| CN101166361B (en) | 2010-06-09 |
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