CN100426929C - Channel bandwidth dynamic configuration method for synchronous code division multiple access system - Google Patents
Channel bandwidth dynamic configuration method for synchronous code division multiple access system Download PDFInfo
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- CN100426929C CN100426929C CNB2006100113503A CN200610011350A CN100426929C CN 100426929 C CN100426929 C CN 100426929C CN B2006100113503 A CNB2006100113503 A CN B2006100113503A CN 200610011350 A CN200610011350 A CN 200610011350A CN 100426929 C CN100426929 C CN 100426929C
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Abstract
The present invention discloses a dynamic configuring method for a channel bandwidth of a synchronous code division multiple access system. The present invention is characterized in that the method comprises the following steps: the service amount of a data grouping service and the time preacting amount of user terminals are measured; a restricted distance state between a base station and the user terminals is determined according to the measured time preacting amount; an upstream channel bandwidth and/or a downstream channel bandwidth and/is reconfigured according to the restricted distance state between the base station and the user terminals and according to the service amount of the data grouping service. The present invention can satisfy service need of users under the permissive condition of system resources. Under the restricted condition of the resources, the present invention restricts the service transmission bandwidth of the users, and thereby, the present invention ensures the stability and the service quality of the system, and enhances the use efficiency of the resources.
Description
Technical field
The present invention relates to wireless communication field, the Dynamic Configuration of channel width in particularly a kind of synchronous code division multiple access communication system.
Background technology
In 3-G (Generation Three mobile communication system),,, become the active demand of operator as business such as Internet access service, web page browsing, Email and FTP (text transfer protocol) downloads for mobile phone users provides high-quality data transmission service.The transmission feature of data packet services is sudden and variable bit rate.For data packet services,, and can cause the waste of unnecessary channel resource seldom the time in data volume if, when data burst, may not satisfy the quick transmission requirements of data for its channel resource that distributes fixed-bandwidth.Therefore, in order to improve the utilization ratio of radio channel resource, the channel width that system should be distributed according to the traffic needs dynamic-configuration of data packet services, promptly when the needs data quantity transmitted is big, distribute bigger bandwidth resources, guaranteeing user's business demand, hour in data volume, then reconfigure less channel width and give this business, unnecessary channel resource can be distributed to other users and use.
Mobile communication system dynamic-configuration channel width mainly is based on the measuring business volume to the data Packet Service.Measuring business volume is provided with two thresholdings: upper and lower bound.Wherein, Fig. 2 is the traffic carrying capacity schematic diagram.If the traffic carrying capacity that measures meets or exceeds the traffic carrying capacity upper limit of setting, then send the measurement report that traffic carrying capacity increases to high-rise module, high level is initiated channel according to measurement report and is reshuffled, and increases channel width; If the traffic carrying capacity that measures reduces and is lower than the traffic carrying capacity lower limit of setting, then send the measurement report that traffic carrying capacity reduces to high-rise module, the high-rise channel of initiating is reshuffled, and reduces channel width.
In carrying out the dynamic-configuration process of channel width, also need to consider the transmission range of the Packet Service of different rates grade, to avoid unnecessary reshuffling.For example, nearer or when having sighting distance (LOS), the path loss of wireless signal is less, can support the transfer of data of relative higher speed when the user distance base station; And when the user away from the base station or when being in non line of sight scope (NLOS), aerial path loss is bigger, the transmitted power of base station can only be supported the transfer of data of low speed.Therefore, the cell coverage area of the Packet Service of different rates grade is different.When plot planning, particularly the networking initial stage in order to enlarge the coverage of sub-district, carry out the overlay area planning of sub-district often at low rate in a certain.Based on this point, mobile communication system also should be considered distance or the path loss situation between user and the base station when carrying out the reshuffling of channel width.For example, when user's path loss is big, need on one's own initiative service rate at a high speed have been fallen, with the service disconnection that prevents to cause because of signal quality deteriorates; Only when nearer, just increase reshuffling of channel width in the user distance base station.
At present, consider that the method that the user and the existing channel width of base station distance or path loss factor are reshuffled is the measurement report result who fully utilizes traffic carrying capacity and downlink dedicated transmitter code power.But this method can only apply to reshuffling of downstream channel bandwidth, and upstream channel bandwidth is reshuffled can only be according to measuring business volume.Simultaneously, for the TD-SCDMA system, use downlink dedicated transmitter code power also to have some destabilizing factors.In the TD-SCDMA mobile communication system, the transmittability of wall scroll physical channel is very little, and for the business of 16kbps-384kbps speed is provided, system need distribute many parallel physical channels, use many code channels or multi-slot, or use many code channels and multi-slot simultaneously.Like this, system not only needs to initiate simultaneously the measurement of a plurality of downlink dedicated transmitter code power, also needs the measurement report result who these is striden time slot to merge, to carry out the judgement that channel width is reshuffled.In the TD-SCDMA system, the number of users that distributes on the different time-gap is different, this just causes the multiple access interference level property of there are differences of different time-gap, thereby cause being positioned at the difference of the transmitter code power of the DPCH (belonging to a radio bearer together) on the different time-gap, finally merging brings destabilizing factor and causes erroneous judgement easily to measurement result.Therefore, downlink dedicated transmitter code power and being not suitable for is applied to the dynamic-configuration of the channel width of TD-SCDMA system.
The TD-SCDMA system is a synchronous mobile communication system, uplink and downlink is had synchronously the requirement of comparison strictness.For uplink synchronous, the upward signal that requirement is in the user terminal (UE) of diverse geographic location can arrive the base station synchronously.UE when inserting at random by the received power of down-bound pilot frequency signal or Primary Common Control Physical Channel (PCCPCH) signal estimate path loss and computing time lead, to set up uplink synchronous.And in whole communication process, Node B must detect the due in of intermediate code in its uplink frame incessantly, the x time of UE is carried out closed-loop control, to keep reliable uplink synchronous.The uplink synchronous precision can reach 1/8 chip width.As seen, the Timing Advance of UE upward signal emission can reflect distance or the path loss situation between UE and the base station fully.Therefore, we can be applied to this measurement in the dynamic-configuration of channel width of up-downgoing, the lead schematic diagram when showing the TD-SCDMA system and insert at random as Fig. 1.
Summary of the invention
The characteristics that the present invention is directed to the uplink synchronous of synchronization code multi-address division system propose a kind of channel width dynamic configuration method.
The object of the present invention is to provide channel width dynamic configuration method in a kind of synchronization code multi-address division system, under the condition that is implemented in the system resource permission, satisfy user's business demand as far as possible, under resource-constrained situation, service transmission bandwidth to the user is limited, to guarantee the stable and service quality of system, improve the service efficiency of resource.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of Dynamic Configuration of synchronization code multi-address division system channel width, wherein, comprising:
Step a, the traffic carrying capacity of measurement data Packet Service and the Timing Advance of user terminal;
Step b, according to the Timing Advance of the user terminal of described measurement determine between user terminal and the base station apart from constrained state;
Step c reshuffles the bandwidth of up and/or down channel according to the traffic carrying capacity apart from constrained state and data packet services between user terminal and the base station.
Described method, wherein, described step a further comprises:
Step a1 is the data packet services allocating and measuring Control Parameter in the system; Wherein, the measurement Control Parameter of described data packet services comprises the measuring period or the event argument of measuring object, measuring amount, report amount, the traffic carrying capacity upper limit value and lower limit value that triggers measurement report and/or triggering measurement report;
Step a2 is user terminal allocating and measuring Control Parameter; Wherein, described user terminal measurement Control Parameter comprises the measuring period or the event argument of measuring amount, report amount and/or triggering measurement report;
Step a3 issues the measurement control messages that comprises described measurement Control Parameter.
Described method, wherein, described step b further comprises:
Step b1 according to the channel width of current configuration and the distribution condition of physical channel, dynamically sets the upper and lower bound value of user terminal Timing Advance;
Step b2 according to the upper limit value and lower limit value of the user terminal Timing Advance of described setting and the Timing Advance of measurement, determines that the distance between user terminal and the base station is seriously limited for distance, distance is limited or distance is not limited; Wherein, when the Timing Advance of measuring was higher than the higher limit of described Timing Advance, the distance between user terminal and the base station was the serious constrained state of distance; When the Timing Advance of measuring was between the higher limit of described Timing Advance and lower limit, the distance between user terminal and the base station was apart from constrained state; When the Timing Advance of measuring was lower than the lower limit of described Timing Advance, the distance between user terminal and the base station was a not constrained state of distance.
Described method, wherein, described step c further comprises:
Step c1 judges whether the user terminal Timing Advance is in the serious limited range of distance, and in this way, execution in step c5 is as denying execution in step c2;
Step c2 judges whether the measuring business volume result is the measurement report that triggers the traffic carrying capacity lower limit, and in this way, execution in step c5 is as denying execution in step c3;
Step c3 judges whether the user terminal Timing Advance is in not limited range of distance, and in this way, execution in step c6 is as denying execution in step c4;
Step c4 judges whether the user terminal Timing Advance is in apart from limited range, and in this way, execution in step c7 is as denying execution in step c5;
Step c5 reduces reshuffling of channel width;
Step c6 increases reshuffling of channel width;
Step c7 keeps current channel width constant, does not carry out reshuffling of channel width.
Described method, wherein, described step b1 further comprises:
Step b11 formulates service lists according to network planning to the planning coverage data of each service rate grade, and wherein, this service lists comprises the maximum planning coverage distance of each service rate grade.
Step b12 inquires about the upper and lower bound value that described service lists is dynamically set described user terminal Timing Advance.
Described method, wherein, described step b1 further comprises the step that dynamically arranges the upper and lower bound value of described user terminal Timing Advance according to the maximum code channel number that is distributed on current channel width or the single time slot and current load condition.
Described method, wherein, the span of the upper and lower bound value of described user terminal Timing Advance is 0～MaxT
ADV, MaxT wherein
ADVThe maximum that the express time lead is desirable.
Described method wherein, to the determining step of step c4, further comprises the step that increases corresponding counting thresholding at described step c1; When having only the number of times that satisfies continuously when judgment condition to surpass the counting thresholding of setting, just be that final condition satisfies.Do " soldier's pang effect " that can prevent that the fluctuation because of measurement result from causing like this.
Described method, wherein, the measurement of described measuring business volume and/or user terminal Timing Advance is acted part according to being configured in the control messages that issues among the step a3 and is triggered and/or periodic report.
By technique scheme as can be seen, the present invention utilizes the synchronous characteristics of TD-SCDMA system uplink, adopts the Timing Advance (T of UE
ADV) distance between UE and the base station is made judgement accurately, can under the condition that system resource allows, satisfy user's business demand on the one hand as far as possible; Under resource-constrained situation, the configuration to customer service speed limits according to the distance between UE and the base station on the other hand, with the reasonable utilization of the service quality, stability and the system resource that guarantee system, avoids unnecessary reconfiguration course.Compare with the method that adopts downlink sign indicating number power, the present invention can overcome destabilizing factor and the erroneous judgement effect in the merging of downlink code power measurement, and measuring amount is less, and measurement and determination methods are also simple, easy to implement.In addition, the present invention can be applied in the dynamic-configuration of descending and up channel width simultaneously.
Description of drawings
Fig. 1 is a time lead schematic diagram when inserting at random;
Fig. 2 is the traffic carrying capacity schematic diagram;
Fig. 3 is the flow chart of the dynamic-configuration process of channel width of the present invention.
Embodiment
The invention provides the channel width dynamic configuration method in a kind of TD-SCDMA system.
The core concept of the method for the invention is to utilize the Timing Advance (T of UE
ADV) distance between UE and the base station is made judgement, and the configuration to customer service speed limits according to the distance between UE and the base station, to guarantee the reasonable utilization of system resource, avoids unnecessary reconfiguration course.Fig. 3 is the flow chart of the dynamic-configuration process of channel width of the present invention.Below in conjunction with Fig. 3 the enforcement of one embodiment of the invention method is described in further detail:
Step 301: after the radio bearer (RB) of user grouping business is set up, for its configuration service measurement amount Control Parameter and UE internal measurement Control Parameter are that the UE Timing Advance is measured Control Parameter, service volume measurement and control parameter wherein comprises measuring object, measuring amount, report amount, trigger the traffic carrying capacity upper limit value and lower limit value of measurement report and/or trigger the measuring period or the event argument of measurement report; UE internal measurement Control Parameter comprises measuring object, measuring amount, report amount, triggers the measuring period or the event argument of measurement report, and the sending measuring control messages;
Step 302: according to the channel width of current configuration and the distribution condition of physical channel, dynamically set the upper and lower bound of UE Timing Advance, and the distance of UE and base station is divided into different grades according to the bound of Timing Advance;
Promptly, the distance between UE and the base station is divided into three states: the serious constrained state (T of distance according to two threshold values of the UE Timing Advance of setting
ADVValue is higher than the upper limit), apart from constrained state (T
ADVValue is between the upper and lower bound) and distance constrained state (T not
ADVValue is lower than lower limit).Work as T
ADVSize when being in the serious limited scope of distance, directly reduce reshuffling of channel width; Work as T
ADVWhen being in the limited scope of distance,, also keep this channel width constant even when the demand that channel width increases is arranged; If when the demand that channel width reduces is arranged, then reduce reshuffling of channel width; Work as T
ADVWhen being in the not limited scope of distance,, then carrying out the increase of channel width or reduce to reshuffle according to the demand of traffic carrying capacity if having channel width to increase or during the demand that reduces.
When UE is in the serious limited state of distance, show that the path loss between UE and the base station is bigger, the transmitting power of Radio Link is in higher level, be not enough to support the signal interference ratio requirement of active user's service rate, therefore, need to reduce channel width, release portion resource, the service efficiency of raising resource.When UE is in the limited state of distance, path loss between same UE and the base station is bigger, transmitting power is in higher level, though can keep the signal interference ratio requirement of current customer service speed, but be not suitable for further promoting transmitting power, to support the signal interference ratio requirement of higher service rate.And when UE was in the not limited state of distance, the path loss between UE and the base station was less, and transmitting power remains at low levels.Not only can keep the signal interference ratio requirement of current customer service speed, and can further promote transmitting power, to satisfy the signal interference ratio requirement of higher service rate.In this case, can increase the operation of channel width.
The dynamic setting of the bound of UE Timing Advance can be taked multiple mode.For example, can obtain by the good service lists inquiry of configured in advance according to current channel width.This service lists comprises the pairing Timing Advance of maximum planning coverage distance of each service rate grade.The upper limit of UE Timing Advance can be made as the pairing Timing Advance of maximum planning coverage distance of current business speed, and lower limit be made as the pairing Timing Advance of maximum planning coverage distance of the higher service rate of upper level of current business speed.In addition, the bound of UE Timing Advance also can dynamically arrange according to maximum code channel number that is distributed on current channel width or the single time slot and current load condition (underloading, normal or overload).When sub-district or time-slot load underloading, threshold value can be oppositely arranged higherly up and down; When the load heavy duty, threshold value can be oppositely arranged lowly up and down.Wherein, the span of the upper and lower bound value of user terminal Timing Advance is 0～MaxT
ADV, MaxT wherein
ADVThe maximum that the express time lead is desirable.
Step 303: when receiving the measurement report of the Timing Advance that reports, determine UE apart from constrained state;
Configuration during the UE internal measurement that Timing Advance issues according to step 301 is controlled can be carried out reporting of measurement result periodically.
Step 304: judge whether UE is in the serious constrained state of distance; If UE is in the serious limited state of distance, execution in step 306, otherwise execution in step 305;
Step 305: when receiving the measurement report of the traffic carrying capacity that reports, judge whether the traffic carrying capacity report is the measurement report that triggers the traffic carrying capacity lower limit, if then execution in step 306, otherwise execution in step 307;
Being configured into during the measurement that measuring business volume issues according to step 301 is controlled acted the part triggering and reported.
Step 306: reduce reshuffling of channel width;
Step 307: judge whether the UE distance state is not constrained state of distance, if, execution in step 308, otherwise execution in step 309;
Step 308: increase reshuffling of channel width;
Step 309: judge whether the UE distance state is apart from constrained state, if, execution in step 310, otherwise execution in step 306;
Step 310: keep channel width constant.
In the judgement of step 303 and step 305, can increase corresponding counting thresholding, when having only the number of times that satisfies continuously when judgment condition to surpass the counting thresholding of setting, think that just final condition satisfies.Do " soldier's pang effect " that the fluctuation that can prevent measurement result causes like this.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1, a kind of Dynamic Configuration of synchronization code multi-address division system channel width is characterized in that, comprising:
Step a, the traffic carrying capacity of measurement data Packet Service and the Timing Advance of user terminal;
Step b, according to the Timing Advance of the user terminal of described measurement determine between user terminal and the base station apart from constrained state;
Step c reshuffles the bandwidth of up and/or down channel according to the traffic carrying capacity apart from constrained state and data packet services between user terminal and the base station.
2, method according to claim 1 is characterized in that, described step a further comprises:
Step a1 is the data packet services configuration service measurement amount Control Parameter in the system; Wherein, the measurement Control Parameter of described data packet services comprises the measuring period or the event argument of measuring object, measuring amount, report amount, the traffic carrying capacity upper limit value and lower limit value that triggers measurement report and/or triggering measurement report;
Step a2 is for user terminal lead setup time is measured Control Parameter; Wherein, described user terminal measurement Control Parameter comprises the measuring period or the event argument of measuring amount, report amount and/or triggering measurement report;
Step a3 issues the measurement control messages that comprises described service volume measurement and control parameter and Timing Advance measurement Control Parameter.
3, method according to claim 2 is characterized in that, described step b further comprises:
Step b1 according to the channel width of current configuration and the distribution condition of physical channel, dynamically sets the upper and lower bound value of user terminal Timing Advance;
Step b2 according to the upper limit value and lower limit value of the user terminal Timing Advance of described setting and the Timing Advance of measurement, determines that the distance between user terminal and the base station is seriously limited for distance, distance is limited or distance is not limited; Wherein, when the Timing Advance of measuring was higher than the higher limit of described Timing Advance, the distance between user terminal and the base station was the serious constrained state of distance; When the Timing Advance of measuring was between the higher limit of described Timing Advance and lower limit, the distance between user terminal and the base station was apart from constrained state; When the Timing Advance of measuring was lower than the lower limit of described Timing Advance, the distance between user terminal and the base station was a not constrained state of distance.
4, method according to claim 3 is characterized in that, described step c further comprises:
Step c1 judges whether the user terminal Timing Advance is in the serious limited range of distance, and in this way, execution in step c5 is as denying execution in step c2;
Step c2 judges whether the measuring business volume result is the measurement report that triggers the traffic carrying capacity lower limit, and in this way, execution in step c5 is as denying execution in step c3;
Step c3 judges whether the user terminal Timing Advance is in not limited range of distance, and in this way, execution in step c6 is as denying execution in step c4;
Step c4 judges whether the user terminal Timing Advance is in apart from limited range, and in this way, execution in step c7 is as denying execution in step c5;
Step c5 reduces reshuffling of channel width;
Step c6 increases reshuffling of channel width;
Step c7 keeps current channel width constant, does not carry out reshuffling of channel width.
5, according to claim 3 or 4 described methods, it is characterized in that described step b1 further comprises:
Step b11 formulates service lists according to the network planning to the planning coverage data of each service rate grade, and wherein, described service lists comprises the maximum planning coverage distance of each service rate grade;
Step b12 inquires about the upper and lower bound value that described service lists is dynamically set described user terminal Timing Advance.
6, according to claim 3 or 4 described methods, it is characterized in that described step b1 further comprises the step that dynamically arranges the upper and lower bound value of described user terminal Timing Advance according to the maximum code channel number that is distributed on current channel width or the single time slot and current load condition.
7, method according to claim 3 is characterized in that, the span of the upper and lower bound value of described user terminal Timing Advance is 0～MaxT
ADV, MaxT wherein
ADVThe maximum that the express time lead is desirable.
8, method according to claim 4 is characterized in that, to the determining step of step c4, further comprises the step that increases corresponding counting thresholding at described step c1; When having only the number of times that satisfies continuously when judgment condition to surpass the counting thresholding of setting, just be that final condition satisfies.
9, according to the described method of arbitrary claim among the claim 2-4,7 or 8, it is characterized in that the measurement of described measuring business volume and/or user terminal Timing Advance is acted part according to being configured in the control messages that issues among the step a3 and triggered and/or periodic report.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101154984B (en) * | 2006-09-25 | 2012-10-03 | 电信科学技术研究院 | Method and system for remaining ascending synchronization |
| WO2012100371A1 (en) * | 2011-01-27 | 2012-08-02 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for allocating transport channels for multimedia broadcast multicast service |
| CN103369596B (en) * | 2012-04-01 | 2016-09-14 | 南京中兴软件有限责任公司 | Terminal switching method and device |
| KR102313835B1 (en) * | 2015-02-13 | 2021-10-18 | 삼성전자 주식회사 | Apparatus and method for measuring traffic of users in a building using distributed antenna system |
| KR102149630B1 (en) * | 2016-11-05 | 2020-08-28 | 애플 인크. | Asymmetric bandwidth support and dynamic bandwidth adjustment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369979A (en) * | 2001-02-15 | 2002-09-18 | 华为技术有限公司 | Dynamical channel configuration method for CDMA celllar mobile communication system |
| CN1404248A (en) * | 2001-09-03 | 2003-03-19 | 华为技术有限公司 | Dynamic channel configuration method based on source rate estimation |
| CN1437418A (en) * | 2002-02-09 | 2003-08-20 | 华为技术有限公司 | Business channel distributing method in GSM |
| CN1527616A (en) * | 2003-03-06 | 2004-09-08 | 华为技术有限公司 | Daynamic channel bandwidth allocating method |
| US20050057880A1 (en) * | 2003-09-15 | 2005-03-17 | Bailey George R. | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain |
| CN1722890A (en) * | 2004-07-14 | 2006-01-18 | 中兴通讯股份有限公司 | A method of dynamic channel allocation for TD-SCDMA communication system |
-
2006
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369979A (en) * | 2001-02-15 | 2002-09-18 | 华为技术有限公司 | Dynamical channel configuration method for CDMA celllar mobile communication system |
| CN1404248A (en) * | 2001-09-03 | 2003-03-19 | 华为技术有限公司 | Dynamic channel configuration method based on source rate estimation |
| CN1437418A (en) * | 2002-02-09 | 2003-08-20 | 华为技术有限公司 | Business channel distributing method in GSM |
| CN1527616A (en) * | 2003-03-06 | 2004-09-08 | 华为技术有限公司 | Daynamic channel bandwidth allocating method |
| US20050057880A1 (en) * | 2003-09-15 | 2005-03-17 | Bailey George R. | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain |
| CN1722890A (en) * | 2004-07-14 | 2006-01-18 | 中兴通讯股份有限公司 | A method of dynamic channel allocation for TD-SCDMA communication system |
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