CN101938844B - Priority-based competitive ranging method and device for mobile terminals - Google Patents
Priority-based competitive ranging method and device for mobile terminals Download PDFInfo
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- CN101938844B CN101938844B CN200910088616.8A CN200910088616A CN101938844B CN 101938844 B CN101938844 B CN 101938844B CN 200910088616 A CN200910088616 A CN 200910088616A CN 101938844 B CN101938844 B CN 101938844B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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Abstract
The invention discloses a priority-based competitive ranging method and a priority-based competitive ranging device for mobile terminals and relates to user terminal ranging technology. The method is provided to solve the problem that the user terminals with set priorities cannot demonstrate the difference between ranging services. The invention adopts a technical scheme that a user terminal transmits a selected ranging code by using a selected ranging opportunity according to the priority of the user terminal. The invention also discloses a ranging device of the method. The method and the device well ensure the communication service quality of user terminals and well demonstrate the differentiated services of communication.
Description
Technical field
The present invention relates to the uplink distance measuring technology of user terminal, particularly relate to and be a kind ofly arranged in the CSG user terminal of semi-open CSG cell and the competitive ranging method based on priority of non-CSG user terminal and device.
Background technology
In order to the weakness that the deficiency and throughput for making up macro base station in-door covering is lower, occur for personal user or group user provide the picocell (Femtocell) of service in current mobile communication system, to provide more high-quality more high efficiency wireless access for mobile subscriber terminal.User can oneself buy or install femtocell base station (FemtocellBS, Femtocell Base Station).According to femtocell base station the user type of service is provided, Femtocell BS can be divided into three types again, one class is that totally-enclosed user organizes femto base station (CSG-closed femtocell BS, Closed Subscriber Group-closed femtocell BS), this type of base station for and be only its authorized user service be provided; Equations of The Second Kind is that partially enclosed user organizes femto base station (CSG-open femtocell BS), and this type of base station can under the prerequisite of demand for services meeting authorized user, for unauthorized user provides the service of doing one's best; 3rd class organizes femto base station (OSG, open femtocell BS) for opening user, and this type of base station can be the open use of all users in service area.
In a wireless communication system, user terminal carries out network insertion in the base station of public network, re-access, when switching, first need to carry out down-going synchronous, obtain system descending and up transformation parameter, then carry out uplink synchronous or be called range finding, carrying out the adjustment of the emission parameters such as time, frequency and transmitting power.Usually, user terminal in a cell coverage area adopts based on code division multiple access (CDMA when carrying out network and initially accessing, re-access or switch, Code Division Multiple Access) competitive way of code finds range, and namely on the user terminal range measurement resource of specifying in system, random selecting ranging slot and ranging code are found range.After colliding, user terminal reselects range measurement resource next time by adopting the mode of random back, and Stochastic choice ranging code, restarts ranging process, until ranging success or number of attempt reach maximum times.
For femtocell base station, especially for the femtocell base station of CSG-open type, due to this type of base station for the promise of CSG user and non-CSG user provides the service with different priorities and different brackets, such as CSG-open femtocell BS should provide service mainly to CSG user, and ensureing the service quality (QoS of CSG user, Quality of Service) under prerequisite, there is provided service can to non-CSG user, non-CSG user has lower service priority.The ranging process of differentiation is not provided in prior art, thus the priority access of CSG user can not be ensured.Based on this prerequisite, all network insertion is carried out CSG user and non-CSG user, re-access or from other cell merge adjacent to CSG-openfemtocell time, need consider priority policy to ensure that CSG user completes foregoing ranging process rapidly.
Existing CSG-open femtocell community, can not provide the service of differentiation, for the user terminal in CSG-open femtocell community, can not ensure the service quality of CSG user to user terminal wherein.
Summary of the invention
In view of this, the competitive ranging method that main purpose of the present invention is to provide a kind of mobile terminal based on priority and device, with when the user terminal of different priorities is found range, for it provides the service of differentiation, preferably ensure the ranging success rate of the user terminal of high priority.
For achieving the above object, technical scheme of the present invention is achieved in that
Mobile terminal, based on a competitive ranging method for priority, comprising:
User terminal sends the ranging code of selection on the ranging opportunity selected according to the priority of self, find range.
Preferably, user terminal selecting ranging opportunity, is specially:
User terminal is according to the selection mode of the priority determination ranging opportunity of self.
Preferably, user terminal, according to the selection mode of the priority determination ranging opportunity of self, is specially:
The user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity;
Or the user terminal of high priority is to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical.
Preferably, before the ranging opportunity of user terminal selecting sends the ranging code of selection, also comprise:
User terminal for different priorities arranges same ranging code collection;
Or the user terminal for different priorities arranges different ranging code collection, and described user terminal concentrates Stochastic choice ranging code at the ranging code of its correspondence; Wherein, the ranging code of low priority user terminal integrates the subset of the ranging code collection as high-priority users terminal, or, the ranging code of high-priority users terminal integrates the subset of the ranging code collection as low priority user terminal, or the ranging code collection of high-priority users terminal and the ranging code collection of low priority user terminal are independent mutually.
Preferably, before the ranging opportunity of user terminal selecting sends the ranging code of selection, also comprise:
User terminal for different priorities arranges similar and different range finding time-frequency resource area, and selected ranging code is carried in corresponding running time-frequency resource region by described user terminal on ranging opportunity.
Preferably, described method also comprises:
User terminal, after transmission ranging code, when not receiving the ranging response of base station in the setting period, determines according to the priority of self selection mode reselecting ranging opportunity, and sends the ranging code of selection on the ranging opportunity selected, and finds range.
Preferably, user terminal determines according to the priority of self selection mode reselecting ranging opportunity, comprising:
High-priority users is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; The rollback window of the random back mode of institute's gravity treatment be initial window size or than last time random back mode large;
Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively; The rollback window of the random back mode of institute's gravity treatment be initial window size or than last time random back mode large;
Or, the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity;
Or the user terminal of high priority is to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical; The rollback window of the random back mode of institute's gravity treatment be initial window size or than last time random back mode large.
Preferably, described method also comprises:
After user terminal sends ranging code, receive the continuation range finding instruction of network side, according to the priority of self, in former ranging region or cycle ranging region, select ranging opportunity, continue range finding;
High-priority users is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity;
Or the user terminal of high priority is to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical.
Preferably, described method also comprises:
After user terminal sends ranging code, receive the instruction that network side is abandoned finding range; Low priority user terminal is no longer found range after receiving and abandoning range finding instruction.
Preferably, described distance measuring method comprises at least one mode in the range finding in initial access process, the range finding in handoff procedure, Perodic ranging and bandwidth request range finding.
Preferably, described method also comprises:
For different distance measuring methods arranges different or identical ranging code collection;
Or, for different distance measuring methods distributes the running time-frequency resource region of different or identical range finding.
Preferably, described method also comprises:
User terminal obtains the running time-frequency resource area information of configured ranging code collection and range finding by system information.
Mobile terminal, based on a competition range unit for priority, comprising:
First selected cell, for the selection mode of the priority determination ranging opportunity according to user terminal, and selects ranging opportunity by described selection mode;
Transmitting element, for sending the ranging code of selection on the ranging opportunity selected; And
Range cells, finds range for utilizing described ranging code.
Preferably, the selection mode of described first selected cell determination ranging opportunity, is specially:
For the user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, for the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity;
Or the user terminal of high priority is to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical.
Preferably, described device also comprises:
First setting unit, for arranging similar and different ranging code collection for the user terminal of different priorities; And
Second selected cell, for concentrating selection ranging code for described user terminal at the ranging code of correspondence.
Preferably, described device also comprises:
Second setting unit, for distributing the running time-frequency resource region of similar and different ranging code for the user terminal of different priorities; And
Load bearing unit, for being carried on the ranging code selected by user terminal in corresponding running time-frequency resource region.
Preferably, described device also comprises:
Trigger element, during for not receiving ranging response within the setting period, triggering described first selected cell, determining to reselect ranging opportunity according to the priority of self, described transmitting element sends the ranging code of selection on the ranging opportunity selected, and triggers described range cells and find range.
Preferably, described device also comprises:
3rd setting unit, for arranging similar and different ranging code collection for different distance measuring methods, described second selected cell is the ranging code that ranging code corresponding to described user terminal selecting is concentrated according to distance measuring method.
Preferably, described distance measuring method comprises the range finding in initial access process, the range finding in handoff procedure, Perodic ranging or bandwidth request range finding.
Preferably, described device also comprises:
4th setting unit, for arranging the running time-frequency resource region of similar and different carrying ranging code for different distance measuring methods, the ranging code that described second selected cell is selected, according to distance measuring method, is carried on corresponding running time-frequency resource region by described load bearing unit.
Mobile terminal, based on a competition range unit for priority, comprising:
Selected cell, for the ranging code selecting similar and different ranging code to concentrate according to the priority of user terminal;
Transmitting element, for sending selected ranging code on selected ranging opportunity; And
Range cells, finds range for utilizing described ranging code.
Mobile terminal, based on a competition range unit for priority, comprising:
Setting unit, for arranging the running time-frequency resource region of similar and different range finding for the user terminal of different priorities;
Carrying transmitting element, in the running time-frequency resource region ranging code selected by user terminal being carried on selected ranging opportunity corresponding range finding, and sends; And
Range cells, for finding range to described user terminal.
In the present invention, for the user terminal of different priorities, for it arranges different selection modes, select ranging opportunity to find range, ensureing the priority of high-priority users terminal when finding range with this, making its lower-priority subscriber's terminal more easily complete range finding.In addition, for the user terminal of different priorities, also the ranging code collection of different size can be set for it, the priority of high-priority users terminal when finding range is ensured with this, determined the priority of user terminal by the selection of ranging code collection simultaneously, like this, network side can be that user terminal determines different process resources according to the type of ranging code, ensures the success rate of high-priority users terminal ranging.Or the user terminal for different priorities arranges different ranging code bearing resources, network side can determine the priority of user terminal by the bearing resource position of ranging code, and the ranging success rate of the user terminal of high priority is ensured.Certainly, above-mentioned several range finding strategy can use simultaneously, to make the operability of scheme stronger.User terminal is after Ranging collision, again find range immediately, now, the selection mode of ranging opportunity can be changed, namely reduce user terminal again find range in collision probability, namely for the previous Stochastic choice mode selected, again random back mode is selected during range finding, and for previous random back mode of selecting, again still select random back mode during range finding, but selected rollback window more previous more longer (n power with 2 or 2 is that the factor increases rollback window).In the present invention, by providing the ranging success rate of differentiation for the user terminal of different priorities, ensure that the telecommunication service quality of different user terminals well, embody the differentiated service of communication better.The present invention program realizes simple and practical.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the test machine meeting of Stochastic choice mode and random back mode;
Fig. 2 is mobile terminal of the present invention the first structural representation of competition range unit based on priority;
Fig. 3 is the competition range unit the second structural representation of mobile terminal of the present invention based on priority;
Fig. 4 is mobile terminal of the present invention the third structural representation of competition range unit based on priority.
Embodiment
Basic thought of the present invention is: for the user terminal of different priorities, for it arranges different ranging opportunity selection modes, select ranging opportunity to find range, ensureing the priority of high-priority users terminal when finding range with this, making its lower-priority subscriber's terminal more easily complete range finding.In addition, for the user terminal of different priorities, also the ranging code collection of different size can be set for it, the priority of high-priority users terminal when finding range is ensured with this, determined the priority of user terminal by the selection of ranging code collection simultaneously, like this, network side can be that user terminal determines different process resources according to the type of ranging code, ensures the success rate of high-priority users terminal ranging.Or the user terminal for different priorities arranges different range finding bearing resources, network side can determine the priority of user terminal by the bearing resource position of ranging code, and the ranging success rate of the user terminal of high priority is ensured.Certainly, above-mentioned several range finding strategy can use simultaneously, to make the operability of scheme stronger.User terminal is after Ranging collision, again find range immediately, now, the selection mode of ranging opportunity can be changed, namely reduce user terminal again find range in collision probability, namely for previous Stochastic choice (random selection) mode selected, again random back (random backoff) mode is selected during range finding, and for the previous random back mode selected, again still select random back mode during range finding, but selected rollback window is more previous more longer.In the present invention, by providing the ranging success rate of differentiation for the user terminal of different priorities, ensure that the telecommunication service quality of different user terminals well, embody the differentiated service of communication better.The present invention program realizes simple and practical.
In the present invention, user terminal comprises the user terminal of different authorization type, as CSG user terminal, non-CSG user terminal; The user terminal of different signing grade, the user terminal of different service types.
For making the object, technical solutions and advantages of the present invention clearly understand, by the following examples also with reference to accompanying drawing, the present invention is described in more detail.
Embodiment one
This example is applicable to the range finding that CSG user terminal under CSG-Open femtocell BS and non-CSG (non-CSG) user terminal carry out.
System configuration is initial, switchings, the cycle, bandwidth request ranging region, so-called ranging region, running time-frequency resource region selected when being user terminal transmission ranging code, namely ranging code should be carried on the region of system subframe by user terminal.Different range finding object is configured with special ranging code collection.In this example, CSG user terminal and non-CSG user terminal share initial ranging region and the set of initial ranging code, CSG user terminal and non-CSG user terminal carry out initial ranging, will in ranging code set Stochastic choice ranging code, and selected ranging code is carried in ranging region, by corresponding channel, ranging code is sent to base station side, the ranging code that base station side sends according to user terminal carries out signal time, frequency, the measurement of power, and determine time migration, frequency shift (FS) and power adjustment parameters are to user terminal, user terminal realizes uplink synchronous according to adjustment parameter.Although, ranging region and ranging code set are identical, but the selection mode of the ranging opportunity that CSG user terminal and non-CSG user terminal adopt is different, Fig. 1 is the schematic diagram of the test machine meeting of Stochastic choice mode and random back mode, as shown in Figure 1, in the radio bearer resources of sub-frame of uplink, in figure, each square frame is a radio bearer ranging opportunity, as OFDM (OFDM, the Orthogonal Frequency Division Multiplexing) radio bearer resources such as symbol and subcarrier block.Stochastic choice mode is specially: from the start time t0 of subframe, the ranging code that CSG user terminal selects a chance to select from ranging code set to carry CSG user terminal in front 1 to 6 chance (range finding time/frequency source block), and for random back mode, then be provided with rollback window, such as illustrate, its rollback window is 16, namely from the start time t0 of subframe, the ranging code that non-CSG user terminal selects a chance to select from ranging code set to carry non-CSG user terminal in front 1 to 16 chance.Like this, the duration carrying the chance of ranging code selected by non-CSG user terminal is more longer, ranging code be carried on subframe compared with before chance will be carried on than the ranging code selected by CSG user terminal subframe compared with before position little, the rollback window of non-CSG user terminal is larger, and the probability collided with CSG user terminal is less.
The ranging opportunity region that CSG user terminal and non-CSG user terminal use is by network side provisional configuration, and notify user terminal by system broadcast message, described system broadcast message can be carried by one or more attached bags of auxiliary superframe header, such as, at user terminal by system targeting sequencing and broadcast, judge oneself current as CSG user terminal time, to determine that used ranging opportunity region and ranging opportunity selection mode are Stochastic choice mode, when being defined as non-CSG user terminal, to determine that used ranging opportunity region and ranging opportunity selection mode are random back mode.Also different ranging opportunity selection modes can be set according to other priority levels of user terminal, such as, can be the user terminal of high priority with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, for the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or all user terminals are all with Stochastic choice way selection ranging opportunity; Or all user terminals are all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical.
By system broadcast information, initial, switching, cycle, bandwidth request ranging region information and ranging code set are informed to user terminal.Described system broadcast message can be carried by one or more attached bags of auxiliary superframe header.When aforesaid ranging region is determined in the entire system, or, after ranging code set is all determined, by ranging region and ranging code set configuration in user terminal, user terminal is Stochastic choice ranging code in configured ranging code set, and at current ranging opportunity length (region) middle Stochastic choice chance carrying ranging code in configured ranging region.
CSG user terminal adopts Stochastic choice mode in initial ranging region, non-CSG user terminal adopts random back way selection ranging opportunity in initial ranging region, and in respective distributed ranging code set, Stochastic choice ranging code, then on selected ranging opportunity, send selected ranging code/and carry ranging message, finding range.Ranging message comprises type of user terminal mark and/or bandwidth request information and/or range finding object information.Type of user terminal mark comprises CSG user type and non-CSG user type etc., for the type of base station discriminating user, determines the priority-level of user terminal, thus implements different processing modes.
When user terminal receives the response of base station to the initial ranging that it sends, if the state of response is " continuation ", CSG user terminal and non-CSG user terminal adopt the mode of Stochastic choice to select a ranging opportunity in the cycle ranging region in one or more subframe.Then, user terminal Stochastic choice ranging code again in respective distributed corresponding ranging code set, and in selected ranging slot, send selected ranging code and/or carry ranging message, continue to perform range finding.
When described user does not receive the response of base station to the ranging code that it sends, user terminal is thought and is found range unsuccessfully, and enter contention resolved process, concrete mode is as follows:
CSG user terminal adopts Stochastic choice mode or random back mode in initial ranging region, and the random back mode that non-CSG user terminal adopts random back mode or doubles rollback window in initial ranging region reselects a ranging opportunity; Then, user terminal Stochastic choice ranging code again in respective distributed corresponding ranging code set, and in selected ranging slot, send selected ranging code and/or carry ranging message, again find range.
When base station present load is too high, the continuation ranging process of part low priority user terminal can be refused.When base station receives non-CSG user terminal ranging code, if the load of current system reaches certain thresholding, base station can be one of following form to the response of non-CSG user terminal, and is not limited to following form: state is designated as " continuation ", and indicating user terminal can continue to perform range finding; State is designated as " abandoning ", and indicating user terminal should stop range finding;
Contention resolved process performs repeatedly, and the rollback window under random back mode is that the factor expands with n (n >=1) power of 2, until user terminal ranging success.
In the present invention, also can by the user terminal for different priorities at the different ranging code collection of initial ranging code concentrated setting, described user terminal concentrates Stochastic choice ranging code at the ranging code of its correspondence.Avoided by the difference of ranging code or reduce the collision between different priority users terminal, determining the priority of user terminal, making process of finding range accordingly according to this.Here, different ranging code collection comprises: high-priority users terminal uses initial ranging code collection, the ranging code of low priority user terminal integrates the subset of the ranging code collection as high-priority users terminal, or, low priority user terminal uses initial ranging code collection, the ranging code of high-priority users terminal integrates the subset of the ranging code collection as low priority user terminal, or the ranging code collection of high-priority users terminal and the ranging code collection of low priority user terminal are independent mutually.By the setting of ranging code collection, reduce or avoid the collision probability of low priority and high-priority users terminal.
In the present invention, also can by distributing the running time-frequency resource of different range findings for the user terminal of different priorities.By carrying the running time-frequency resource difference of ranging code, avoid the collision between different priority users terminal, the priority of user terminal can be determined in base station simultaneously, makes process of finding range accordingly according to this.
Embodiment two
This example is applicable to the range finding that CSG user terminal under CSG-Open femtocell BS and non-CSG user terminal carry out.
The range finding implementation of this example is substantially identical with embodiment one, difference is, when the state that user receives ranging response is " continuation ", CSG user terminal adopts Stochastic choice ranging opportunity in the cycle ranging region of Stochastic choice mode in one or more subframe, but not CSG user adopts Stochastic choice ranging opportunity in the cycle ranging region of random back mode in a rollback window.
When not receiving ranging response, if be CSG user terminal, this user terminal adopts Stochastic choice ranging opportunity in the initial ranging region of random back mode in a rollback window; If described user is non-CSG user, this user by original rollback window with 2 n (n >=1) power be that the factor expands, and Stochastic choice ranging opportunity in initial ranging region in new rollback window.
It should be noted that, system can configure initial rollback window values, i.e. the initial size of rollback window, and last rollback window values, the i.e. maximum of rollback window, and rollback window can not infinitely be expanded.The initial rollback window values of CSG user terminal and non-CSG user terminal can be configured to different values, and the initial rollback window values of CSG user terminal is less than the initial rollback window values of non-CSG user terminal.
Embodiment three
This example is applicable to the range finding that CSG user terminal under CSG-Open femtocell BS and non-CSG user terminal carry out.The range finding implementation of this example is substantially identical with embodiment one, difference is, when user terminal does not receive ranging response, CSG user terminal and non-CSG user terminal select ranging opportunity according to the mode adopted during respective former range finding in initial ranging region.
Embodiment four
This example is applicable to the range finding that CSG user terminal under CSG-Open femtocell BS and non-CSG user terminal carry out.
The ranging region that system configuration one is shared, for initial and/or switch and/or cycle and/or bandwidth request range finding, and be configured with the special ranging code collection of different distance measuring method, CSG user terminal and non-CSG user terminal select ranging opportunity in the ranging region shared, and ranging code is selected in the initial ranging code set shared, carry out initial ranging.By system broadcast information, shared ranging region information and ranging code set are informed to user terminal.
User terminal selecting ranging code is also carried in shared ranging region, finds range.Specific implementation and embodiment one, two, three identical, difference is that selected ranging opportunity is in shared ranging region, and selected ranging code is in the set of initial ranging code or its subset.
Embodiment five
This example is applicable to the range finding that CSG user terminal under CSG-Open femtocell BS and non-CSG user terminal carry out.
System configuration is initial, switchings, the cycle, bandwidth request ranging region, and be configured with the shared ranging code set of different range finding object.CSG user terminal and non-CSG user terminal select ranging opportunity in the initial ranging region of sharing, and ranging code is selected in the ranging code set shared, user terminal sends ranging code and carries ranging message on the ranging opportunity selected, and carries out initial ranging, specifically comprises:
By system broadcast message, ranging region information and ranging code aggregate information are informed to user terminal.
User sends ranging code and/or ranging message on the ranging opportunity of described selection.User type identification information and/or bandwidth request information can be carried in ranging message.System user type identification information identifies CSG user and non-CSG user, thus performs different ranging response process.Concrete distance measuring method is identical with embodiment four, repeats no more here.
Embodiment six
This example is applicable to the range finding that CSG user terminal under CSG-Open femtocell BS and non-CSG user terminal carry out.
The ranging region that system configuration one is shared, for initial and/or switch and/or cycle and/or bandwidth request range finding, and is configured with the ranging code set that different range finding object shares.CSG user terminal and non-CSG user terminal select ranging opportunity in the ranging region shared, and select ranging code in the ranging code set shared, and user sends ranging code and carries ranging message on the ranging opportunity selected, and carries out initial ranging.Comprise the following steps:
By system broadcast message, shared ranging region information and shared ranging code aggregate information are informed to user terminal.
User terminal sends ranging code and ranging message on selected ranging opportunity.The form of ranging message with embodiment five, and increases range finding object information.Range finding object information can be set to 2bit, represents 4 kinds of range finding objects, i.e. initial ranging, switching range finding, cycle range finding and bandwidth request range finding.
Concrete distance measuring method is identical with embodiment four, and difference is, the ranging opportunity of described selection is in shared ranging region.
Embodiment seven
This example is applicable to the range finding that the user terminal in CSG-closed femtocell BS or OSG carries out.
System configuration is initial, switching, the cycle, bandwidth request ranging region, for the OSG user terminal under the CSG user terminal under CSG-closed femtocellBS or OSG femtocell BS, in initial ranging region and the set of initial ranging code, ranging opportunity and ranging code is selected to carry out initial ranging.Specifically comprise the following steps:
By system broadcast information, described ranging region and described ranging code aggregate information are informed to user terminal.
If under CSG-closed femtocell BS, CSG user terminal adopts Stochastic choice mode; If under OSG femtocell BS, OSG user terminal adopts random back mode; At initial ranging region Stochastic choice ranging opportunity, and select a ranging code according to being uniformly distributed random process in the set of initial ranging code.User terminal sends selected ranging code on selected ranging opportunity.
When user terminal receive base station to the state of the response of the ranging code that it sends for " continuations " time, Stochastic choice ranging opportunity in the cycle ranging region of CSG or OSG user terminal employing Stochastic choice mode in one or more subframe; And a ranging code is reselected at random with even distribution pattern in the set of initial ranging code.Selected ranging slot sends selected ranging code.
When user terminal does not receive the response of base station to the ranging code that it sends, enter contention resolved process, the CSG user terminal under CSG-closed femtocell BS adopts Stochastic choice ranging opportunity in the initial ranging region of Stochastic choice mode in one or more subframe; OSG user terminal under OSG femtocell BS adopts Stochastic choice ranging opportunity in the initial ranging region of random back mode in a rollback window; Then, described user terminal reselects a ranging code at random with even distribution pattern in the set of initial ranging code, and sends selected ranging code in selected ranging slot.
Contention resolved process performs repeatedly, and the rollback window under random back mode is that the factor expands, until ranging success with n (n >=1) power of 2.
Embodiment eight
This example is applicable to the range finding that the user terminal in CSG-closed femtocell BS or OSG carries out.
The ranging region that system configuration one is shared, for initial and/or switch and/or cycle and/or bandwidth request range finding, and is configured with the ranging code set of different range finding object.OSG user under CSG user under CSG-closed femtocell BS or OSG femtocell BS selects ranging opportunity in the ranging region shared, and selects ranging code in the set of initial ranging code, carries out initial ranging.Comprise the following steps:
By system broadcast information, shared ranging region and initial ranging code aggregate information are informed to user terminal.
User terminal selecting ranging code is also carried in shared ranging region, finds range.Embodiment is with embodiment seven.Difference is that selected ranging opportunity is in the ranging region shared.
Embodiment nine
This example is applicable to the range finding that the user terminal in CSG-closed femtocell BS or OSG carries out.
System configuration is initial, switchings, the cycle, bandwidth request ranging region, and be configured with the shared ranging code set of different range finding object.CSG user terminal under CSG-closed femtocell BS or the OSG user terminal under OSGfemtocell BS are in initial ranging region, ranging opportunity and ranging code is selected in the ranging code set shared, user terminal sends ranging code and carries ranging message on the ranging opportunity selected, and carries out initial ranging.Comprise the following steps:
By system broadcast information, initial ranging region and shared ranging code aggregate information are informed to user.
User sends ranging code and ranging message on the ranging opportunity of described selection.The form of ranging message is with embodiment five or with embodiment six.Embodiment is with embodiment seven.
Embodiment 12
This example is applicable to the range finding that the user terminal in CSG-closed femtocell BS or OSG carries out.
The ranging region that system configuration one is shared, for initial and/or switch and/or cycle and/or bandwidth request range finding, and is configured with the ranging code collection that different range finding object shares.OSG user terminal under CSG user terminal under CSG-closed femtocell BS or OSG femtocell BS selects ranging opportunity in the ranging region shared, and ranging code is selected in the ranging code set shared, user terminal sends ranging code and carries ranging message on the ranging opportunity selected, and carries out initial ranging.Comprise the following steps:
By system broadcast message, shared ranging region and shared ranging code aggregate information are informed to user terminal.
User terminal sends ranging code and ranging message on selected ranging opportunity.The form of ranging message is with embodiment five or with embodiment six.Embodiment is with embodiment seven.
Embodiment 13
In above-mentioned all embodiments, the process of initial ranging can replace with and switch range finding, cycle range finding and bandwidth request range finding, difference is only initial ranging region to replace with and switches ranging region, cycle ranging region or bandwidth request ranging region, when the shared ranging region that above-mentioned range finding uses, what above-mentioned ranging region referred to is exactly share ranging region, initial ranging code is replaced with and switches ranging code, cycle ranging code or bandwidth request ranging code, when above-mentioned ranging code uses shared ranging code, what above-mentioned ranging code referred to is exactly share ranging code.
Embodiment 14
In above-mentioned all embodiments, user terminal also goes for emergency services (emergencyservice).Have the terminal of emergency business to have high priority to find range.
Fig. 2 is mobile terminal of the present invention the first structural representation of competition range unit based on priority, as shown in Figure 2, range unit of the present invention comprises the first selected cell 20, range cells 21 and transmitting element 29, wherein, first selected cell 20 for the selection mode for the priority determination ranging opportunity according to user terminal, and selects ranging opportunity by described selection mode; Transmitting element 29 for sending the ranging code of selection on the ranging opportunity selected; Range cells 21 is found range to described user terminal for utilizing described ranging code.First selected cell 20 selects corresponding ranging opportunity by the priority of described user terminal, be specially: for the user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, for the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, for the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity; Or, for the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical.
As shown in Figure 2, range unit of the present invention also comprises the first setting unit 22 and the second selected cell 23, and wherein, the first setting unit 22 is for arranging similar and different ranging code collection for the user terminal of different priorities; Second selected cell 23 is for concentrating selection ranging code for described user terminal at the ranging code of correspondence.
As shown in Figure 2, range unit of the present invention also comprises the second setting unit 24 and load bearing unit 25, and wherein, the second setting unit 24 is for distributing the running time-frequency resource region of similar and different ranging code for the user terminal of different priorities; Load bearing unit 25 is for being carried on the ranging code selected by user terminal in corresponding running time-frequency resource region.Namely the running time-frequency resource carrying the ranging code of the user terminal of same priority is different, can not occur collision during range finding again, and the priority of user terminal can be determined by the running time-frequency resource of carrying ranging code in base station.
As shown in Figure 2, range unit of the present invention also comprises trigger element 26, during for not receiving ranging response within the setting period, trigger the first selected cell 20, determine to reselect ranging opportunity according to the priority of self, transmitting element 29 sends the ranging code of selection on the ranging opportunity selected, and triggers range cells 21 and find range.
As shown in Figure 2, range unit of the present invention also comprises the 3rd setting unit 27, for arranging similar and different ranging code collection for different distance measuring methods, the second selected cell 23 is the ranging code that ranging code corresponding to described user terminal selecting is concentrated according to distance measuring method.Described distance measuring method comprises the range finding in initial access process, the range finding in handoff procedure, Perodic ranging or bandwidth request range finding.
As shown in Figure 2, range unit of the present invention also comprises the 4th setting unit 28, for arranging the running time-frequency resource region of similar and different carrying ranging code for different distance measuring methods, the ranging code that second selected cell 23 is selected, according to distance measuring method, is carried on corresponding running time-frequency resource region by load bearing unit 25.
It will be appreciated by those skilled in the art that the range unit shown in Fig. 2 is arranged for realizing aforesaid distance-finding method, the practical function of each processing unit in figure can refer to the associated description in previous embodiment one to embodiment 14 and understands.In figure, except the first selected cell 20, transmitting element 29 and range cells 21, remaining element is the inessential technical characteristic of the present invention.In device shown in Fig. 2, the function of each unit realizes by the program run on processor, also realizes by concrete logical circuit.
Fig. 3 is range unit the second structural representation of the present invention, as shown in Figure 3, range unit of the present invention comprises selected cell 30, transmitting element 32 and range cells 31, wherein, and the ranging code that selected cell 30 is concentrated for selecting similar and different ranging code according to the priority of user terminal; Transmitting element 32 is for sending selected ranging code on selected ranging opportunity; Range cells 31 is found range for utilizing described ranging code.
It will be appreciated by those skilled in the art that the range unit shown in Fig. 3 is arranged for realizing aforesaid distance-finding method, the practical function of each processing unit in figure can refer to the associated description in previous embodiment one to embodiment 14 and understands.
Fig. 4 is the third structural representation of range unit of the present invention, as shown in Figure 4, range unit of the present invention comprises setting unit 40, carrying transmitting element 41 and range cells 42, wherein, setting unit 40 is for arranging the running time-frequency resource region of similar and different range finding for the user terminal of different priorities; Load bearing unit 41 in the running time-frequency resource region ranging code selected by user terminal being carried on selected ranging opportunity corresponding range finding, and sends; When the running time-frequency resource region of the ranging code of carrying user terminal is different, can not occur collision during range finding again, the priority of user terminal can be determined by the running time-frequency resource of carrying ranging code in base station.Range cells 42 is for finding range to described user terminal.
It will be appreciated by those skilled in the art that the range unit shown in Fig. 4 is arranged for realizing aforesaid distance-finding method, the practical function of each processing unit in figure can refer to the associated description in previous embodiment one to embodiment 14 and understands.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (19)
1. mobile terminal is based on a competitive ranging method for priority, it is characterized in that, comprising:
User terminal is according to the selection mode of the priority determination ranging opportunity of self, comprise: the user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
User terminal sends the ranging code of selection on the ranging opportunity selected, and finds range.
2. method according to claim 1, is characterized in that, before the ranging opportunity of user terminal selecting sends the ranging code of selection, also comprises:
User terminal for different priorities arranges same ranging code collection;
Or the user terminal for different priorities arranges different ranging code collection, and described user terminal concentrates Stochastic choice ranging code at the ranging code of its correspondence; Wherein, the ranging code of low priority user terminal integrates the subset of the ranging code collection as high-priority users terminal, or, the ranging code of high-priority users terminal integrates the subset of the ranging code collection as low priority user terminal, or the ranging code collection of high-priority users terminal and the ranging code collection of low priority user terminal are independent mutually.
3. the method according to any one of claim 1 or 2, is characterized in that, before the ranging opportunity of user terminal selecting sends the ranging code of selection, also comprises:
User terminal for different priorities arranges similar and different range finding time-frequency resource area, and selected ranging code is carried in corresponding running time-frequency resource region by described user terminal on ranging opportunity.
4. the method according to any one of claim 1 or 2, is characterized in that, described method also comprises:
User terminal, after transmission ranging code, when not receiving the ranging response of base station in the setting period, determines according to the priority of self selection mode reselecting ranging opportunity, and sends the ranging code of selection on the ranging opportunity selected, and finds range.
5. method according to claim 4, is characterized in that, user terminal determines according to the priority of self selection mode reselecting ranging opportunity, comprising:
High-priority users is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; The rollback window of the random back mode of institute's gravity treatment be initial window size or than last time random back mode large;
Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively; The rollback window of the random back mode of institute's gravity treatment be initial window size or than last time random back mode large;
Or, the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity;
Or the user terminal of high priority is to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical; The rollback window of the random back mode of institute's gravity treatment be initial window size or than last time random back mode large.
6. the method according to any one of claim 1 or 2, is characterized in that, described method also comprises:
After user terminal sends ranging code, receive the continuation range finding instruction of network side, according to the priority of self, in former ranging region or cycle ranging region, select ranging opportunity, continue range finding;
High-priority users is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Or, the user terminal of high priority to the user terminal of low priority all with Stochastic choice way selection ranging opportunity;
Or the user terminal of high priority is to the user terminal of low priority all with random back way selection ranging opportunity, and the rollback window size of selected random back mode is identical.
7. the method according to any one of claim 1 or 2, is characterized in that, described method also comprises:
After user terminal sends ranging code, receive the instruction that network side is abandoned finding range; Low priority user terminal is no longer found range after receiving and abandoning range finding instruction.
8. the method according to any one of claim 1 or 2, is characterized in that, described distance measuring method comprises at least one mode in the range finding in initial access process, the range finding in handoff procedure, Perodic ranging and bandwidth request range finding.
9. method according to claim 8, is characterized in that, described method also comprises:
For different distance measuring methods arranges different or identical ranging code collection;
Or, for different distance measuring methods distributes the running time-frequency resource region of different or identical range finding.
10. method according to claim 9, is characterized in that, described method also comprises:
User terminal obtains the running time-frequency resource area information of configured ranging code collection and range finding by system information.
11. 1 kinds of mobile terminals, based on the competition range unit of priority, is characterized in that, comprising:
First selected cell, for the selection mode of the priority determination ranging opportunity according to user terminal, comprise: for the user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, for the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively; And select ranging opportunity by described selection mode;
Transmitting element, for sending the ranging code of selection on the ranging opportunity selected; And
Range cells, finds range for utilizing described ranging code.
12. devices according to claim 11, is characterized in that, described device also comprises:
First setting unit, for arranging similar and different ranging code collection for the user terminal of different priorities; And
Second selected cell, for concentrating selection ranging code for described user terminal at the ranging code of correspondence.
13. devices according to claim 12, is characterized in that, described device also comprises:
Second setting unit, for distributing the running time-frequency resource region of similar and different ranging code for the user terminal of different priorities; And
Load bearing unit, for being carried on the ranging code selected by user terminal in corresponding running time-frequency resource region.
14. devices according to claim 13, is characterized in that, described device also comprises:
Trigger element, during for not receiving ranging response within the setting period, triggering described first selected cell, determining to reselect ranging opportunity according to the priority of self, described transmitting element sends the ranging code of selection on the ranging opportunity selected, and triggers described range cells and find range.
15. devices according to claim 14, is characterized in that, described device also comprises:
3rd setting unit, for arranging similar and different ranging code collection for different distance measuring methods, described second selected cell is the ranging code that ranging code corresponding to described user terminal selecting is concentrated according to distance measuring method.
16. devices according to claim 15, is characterized in that, described distance measuring method comprises the range finding in initial access process, the range finding in handoff procedure, Perodic ranging or bandwidth request range finding.
17. devices according to claim 16, is characterized in that, described device also comprises:
4th setting unit, for arranging the running time-frequency resource region of similar and different carrying ranging code for different distance measuring methods, the ranging code that described second selected cell is selected, according to distance measuring method, is carried on corresponding running time-frequency resource region by described load bearing unit.
18. 1 kinds of mobile terminals, based on the competition range unit of priority, is characterized in that, comprising:
Selected cell, for the ranging code selecting similar and different ranging code to concentrate according to the priority of user terminal; And for the selection mode of the priority determination ranging opportunity according to user terminal self, comprise: the user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Transmitting element, for sending selected ranging code on selected ranging opportunity; And
Range cells, finds range for utilizing described ranging code.
19. 1 kinds of mobile terminals, based on the competition range unit of priority, is characterized in that, comprising:
Setting unit, for arranging the running time-frequency resource region of similar and different range finding for the user terminal of different priorities; And for the selection mode of the priority determination ranging opportunity according to user terminal self, comprise: the user terminal of high priority is with Stochastic choice way selection ranging opportunity, the user terminal of secondary high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of secondary high priority to low priority user terminal selected by the rollback window of random back mode increase successively; Or, the user terminal of high priority to the user terminal of low priority all with random back way selection ranging opportunity, and the user terminal of high priority to low priority user terminal selected by the rollback window of random back mode increase successively;
Carrying transmitting element, in the running time-frequency resource region ranging code selected by user terminal being carried on selected ranging opportunity corresponding range finding, and sends; And
Range cells, for finding range to described user terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910088616.8A CN101938844B (en) | 2009-06-30 | 2009-06-30 | Priority-based competitive ranging method and device for mobile terminals |
| PCT/CN2010/073910 WO2010145527A1 (en) | 2009-06-30 | 2010-06-12 | Priority-based contention ranging method and apparatus for mobile terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910088616.8A CN101938844B (en) | 2009-06-30 | 2009-06-30 | Priority-based competitive ranging method and device for mobile terminals |
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| Publication Number | Publication Date |
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| CN101938844A CN101938844A (en) | 2011-01-05 |
| CN101938844B true CN101938844B (en) | 2015-01-28 |
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| CN200910088616.8A Expired - Fee Related CN101938844B (en) | 2009-06-30 | 2009-06-30 | Priority-based competitive ranging method and device for mobile terminals |
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| US9025455B2 (en) | 2011-04-26 | 2015-05-05 | Industrial Technology Research Institute | Prioritized random access method, resource allocation method and collision resolution method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217780A (en) * | 2007-12-27 | 2008-07-09 | 上海华为技术有限公司 | A range measuring method in communication system, wireless access system and base station |
| CN101222401A (en) * | 2008-02-04 | 2008-07-16 | 北京北方烽火科技有限公司 | WiMAX descending scheduling and band width distribution method |
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| CN100456717C (en) * | 2003-10-17 | 2009-01-28 | 北京邮电大学 | Method for realizing bandwidth ensurement to high-priority-level user in wireless LAN |
| EP1760980B1 (en) * | 2005-09-02 | 2012-05-16 | Samsung Electronics Co., Ltd. | Apparatus and method for performing ranging in a communication system |
| KR101365871B1 (en) * | 2007-07-06 | 2014-02-21 | 엘지전자 주식회사 | Method for performing ranging procedure |
| JP4410818B2 (en) * | 2007-10-11 | 2010-02-03 | 株式会社日立コミュニケーションテクノロジー | Passive optical network system and station side optical transmission line termination device |
| US8369241B2 (en) * | 2008-05-05 | 2013-02-05 | Mediatek Inc. | Fast feedback contention-based ranging procedure in wireless communications systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217780A (en) * | 2007-12-27 | 2008-07-09 | 上海华为技术有限公司 | A range measuring method in communication system, wireless access system and base station |
| CN101222401A (en) * | 2008-02-04 | 2008-07-16 | 北京北方烽火科技有限公司 | WiMAX descending scheduling and band width distribution method |
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| WO2010145527A1 (en) | 2010-12-23 |
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