CN104717044A - Method and device for user terminal to select main carrier in carrier aggregation technology - Google Patents
Method and device for user terminal to select main carrier in carrier aggregation technology Download PDFInfo
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- CN104717044A CN104717044A CN201310682953.6A CN201310682953A CN104717044A CN 104717044 A CN104717044 A CN 104717044A CN 201310682953 A CN201310682953 A CN 201310682953A CN 104717044 A CN104717044 A CN 104717044A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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Abstract
The embodiment of the invention discloses a method and device for a user terminal to select a main carrier in the carrier aggregation technology. The method comprises the steps that signal strength weighing integral values of current signal strengths of all frequencies in a received network signal and historical signal strengths in the prior preset time period are acquired, a physical downlink control channel (PDCCH) is monitored, decoding is conducted on the PDCCH, and the dispatching information of cell physical resources is acquired, wherein the dispatching information of the cell physical resources comprises allocation information of frequencies and slot time resources; the main carrier is selected comprehensively according to the signal strength weighing integral values of the frequencies and the dispatching information of the cell physical resources. By means of the method and device, the situation that unbalance of network loads is caused due to the fact that user terminals are concentrated on some carrier to be in a standby state can be avoided.
Description
Technical field
The present invention relates to the communication technology, the method and apparatus of user terminal selecting main carrier in especially a kind of carrier aggregation technology.
Background technology
Along with developing rapidly of mobile communication technology, the LTE(LTE-Advance of Long Term Evolution (Long Term Evolution, LTE) technology forward advanced person) evolution, a technical characteristics of LTE-Advance to realize carrier aggregation.Carrier aggregation technology provides higher speed by being polymerized multiple carrier wave for user.Carrier aggregation technology supports up-link carrier polymerization and descending carrier polymerization in theory, but due to technical conditions restriction, current carrier aggregation technology only provides descending carrier to be polymerized.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Owing to not realizing up-link carrier polymerization at present, therefore, use the user of same main carrier must use identical up-link carrier, cause the uplink network overload of this main carrier.Selection due to main carrier is the behavior of user terminal, current technology mechanism be user terminal which carrier wave standby just using this carrier wave as main carrier.Because user terminal generally can select the good community of signal standby, be therefore difficult to avoid user terminal to concentrate on certain carrier wave standby, thus cause the imbalance of subzone network load.Although can be realized the load balancing of community by the method switched after accessing user terminal to network, switching flow can increase the signaling consumption of network.
Summary of the invention
Embodiment of the present invention technical problem to be solved is: the method and apparatus providing user terminal selecting main carrier in a kind of carrier aggregation technology, concentrates on the standby imbalance causing network load of certain carrier wave to avoid user terminal.
The method of user terminal selecting main carrier in a kind of carrier aggregation technology that the embodiment of the present invention provides, comprising:
Obtain the current signal strength of each frequency in the network signal received and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before respectively, and monitor physical downlink control channel PDCCH and carry out the decoding of PDCCH, obtain the schedule information of community physical resource, the schedule information of described community physical resource comprises the assignment information of frequency and time interval resource;
Comprehensively select main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource.
State in another embodiment of method on the invention, the current signal strength obtaining each frequency in the network signal received comprises with the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before:
Receive network signal and demodulate the current signal strength of each frequency in network signal, and recording the current signal strength of current time and each frequency;
Obtaining each frequency presetting the historical signal intensity of each historical juncture in a period of time before, according to predetermined manner, the current signal strength of each frequency and historical signal intensity being weighted process respectively, obtaining the signal strength signal intensity weighted product score value of each frequency.
State on the invention in another embodiment of method, also comprise:
Comprehensive according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, judge whether current resident carrier wave is suitable as main carrier;
Be not suitable as main carrier in response to current resident carrier wave, perform the described operation comprehensively selecting main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, and reside on the main carrier of this selection;
Be suitable as main carrier in response to current resident carrier wave, using current resident carrier wave as main carrier, continue to reside on current resident carrier wave.
State in another embodiment of method on the invention, comprehensively select main carrier to comprise according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource:
Comprehensively select signal strength signal intensity weighted product score value comparatively large according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource and the carrier wave of frequency resource free time as main carrier.
The device of user terminal selecting main carrier in a kind of carrier aggregation technology that the embodiment of the present invention provides, comprising:
Signal strength signal intensity acquiring unit, for obtaining the current signal strength of each frequency in the network signal that receives and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before respectively;
PDCCH decoding unit, for monitoring PCCH and carrying out the decoding of PDCCH, obtain the schedule information of community physical resource, the schedule information of described community physical resource comprises the assignment information of frequency and time interval resource;
Decision unit, the schedule information for the comprehensive signal strength signal intensity weighted product score value according to each frequency and community physical resource selects main carrier.
State in another embodiment of device on the invention, described signal strength signal intensity acquiring unit comprises:
Memory cell, for storing the signal strength signal intensity of each frequency in each moment;
Receiver, for receiving network signal and demodulating the current signal strength of each frequency in network signal, and records the current signal strength of current time and each frequency in the memory unit;
Signal processing module, for obtaining each frequency presetting the historical signal intensity of each historical juncture in a period of time before, according to predetermined manner, the current signal strength of each frequency and historical signal intensity are weighted process respectively, obtain the signal strength signal intensity weighted product score value of each frequency.
State in another embodiment of device on the invention, described decision unit, also for comprehensive according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, judge whether the current resident carrier wave of user terminal is suitable as main carrier; Main carrier is not suitable as in response to the current resident carrier wave of user terminal, perform the described operation comprehensively selecting main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, and indicating user terminal resides on the main carrier of this selection; And be suitable as main carrier in response to current resident carrier wave, continue using current resident carrier wave as main carrier, so that user terminal continues to reside on current resident carrier wave.
State in another embodiment of device on the invention, described decision unit, the schedule information specifically for the comprehensive signal strength signal intensity weighted product score value according to each frequency and community physical resource select signal strength signal intensity weighted product score value comparatively large and the carrier wave of frequency resource free time as main carrier.
A kind of user terminal that the embodiment of the present invention provides, comprises the device of user terminal selecting main carrier in the carrier aggregation technology that the above-mentioned any embodiment of the present invention provides.
Based on method and apparatus, the user terminal of user terminal selecting main carrier in the carrier aggregation technology that the above embodiment of the present invention provides, the current signal strength of each frequency in the network signal received and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before can be obtained respectively, and monitor PDCCH and carry out the decoding of PDCCH, obtain the schedule information of community physical resource, comprise the assignment information of frequency and time interval resource; Comprehensively select main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource.Compared with prior art, make the selection of main carrier more balanced, avoid user terminal and concentrate on the standby imbalance causing network load of certain carrier wave, and the increase of network signaling overhead that the method switched after avoiding accessing user terminal to network causes.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Accompanying drawing explanation
What form a part for specification drawings describes embodiments of the invention, and is used from explanation principle of the present invention together with description one.
With reference to accompanying drawing, according to detailed description below, clearly the present invention can be understood, wherein:
Fig. 1 is the flow chart of a method embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention.
Fig. 2 is the flow chart of another embodiment of method of user terminal selecting main carrier in carrier aggregation technology of the present invention.
Fig. 3 is the structural representation of a device embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 1 is the flow chart of a method embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention.As shown in Figure 1, in this embodiment carrier aggregation technology, the method for user terminal selecting main carrier comprises:
110, obtain the current signal strength of each frequency in the network signal received and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before respectively, and monitor Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) and carry out the decoding of PDCCH, the schedule information of community physical resource is obtained.
Wherein, the schedule information of community physical resource comprises the assignment information of all user terminals to frequency and time interval resource.
120, comprehensively select main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource.
Based on the method for user terminal selecting main carrier in the carrier aggregation technology that the above embodiment of the present invention provides, the current signal strength of each frequency in the network signal received and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before can be obtained respectively, and monitor PDCCH and carry out the decoding of PDCCH, obtain the schedule information of community physical resource, comprise the assignment information of frequency and time interval resource; Comprehensively select main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource.Compared with prior art, make the selection of main carrier more balanced, avoid user terminal and concentrate on the standby imbalance causing network load of certain carrier wave, and the increase of network signaling overhead that the method switched after avoiding accessing user terminal to network causes.
Fig. 2 is the flow chart of another embodiment of method of user terminal selecting main carrier in carrier aggregation technology of the present invention.As shown in Figure 2, in this embodiment carrier aggregation technology, the method for user terminal selecting main carrier comprises:
210, receive network signal and demodulate the current signal strength of each frequency in network signal, and recording the current signal strength of current time and each frequency.
220, obtaining each frequency presetting the historical signal intensity of each historical juncture in a period of time before, according to predetermined manner, the current signal strength of each frequency and historical signal intensity being weighted process respectively, obtaining the signal strength signal intensity weighted product score value of each frequency.
Such as, the measuring period of network signal intensity is 0.1 second, can obtain the signal strength signal intensity weighted product score value of some frequencies in the following way: the signal strength signal intensity * 0.2 before the signal strength signal intensity * 0.5+0.3 second before signal strength signal intensity * 0.8+0.2 second of current signal strength before+0.1 second.
230, monitor PDCCH and carry out the decoding of PDCCH, obtaining the schedule information of community physical resource.
Wherein, the schedule information of community physical resource comprises the assignment information of all user terminals to frequency and time interval resource.
It should be noted that, there is not time of implementation order and limit in operation 230 and operation 210 ~ 220, the two can perform simultaneously, can perform with any order successively yet.
240, comprehensively according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, judge whether current resident carrier wave is suitable as main carrier.
If current resident carrier wave is not suitable as main carrier, perform the operation of 250.If current resident carrier wave is suitable as main carrier, then undo, using current resident carrier wave as main carrier, continue to reside on current resident carrier wave.
250, comprehensively select the operation of main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, and reside on the main carrier of this selection.
Unrestricted according to a concrete example of the embodiment of the method for user terminal selecting main carrier in carrier aggregation technology of the present invention, when comprehensively selecting main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, specifically can comprehensively select signal strength signal intensity weighted product score value comparatively greatly according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource and the carrier wave of frequency resource free time as main carrier.
Fig. 3 is the structural representation of a device embodiment of user terminal selecting main carrier in carrier aggregation technology of the present invention.In this embodiment carrier aggregation technology, the device of user terminal selecting main carrier can be used in the present invention the embodiment of the method for user terminal selecting main carrier in above-mentioned each carrier aggregation technology.As shown in Figure 3, it comprises signal strength signal intensity acquiring unit, PDCCH decoding unit and decision unit.Wherein:
Signal strength signal intensity acquiring unit, for obtaining the current signal strength of each frequency in the network signal that receives and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before respectively.
PDCCH decoding unit, for monitoring PCCH and carrying out the decoding of PDCCH, obtains the schedule information of community physical resource, and wherein, the schedule information of community physical resource comprises the assignment information of all user terminals to frequency and time interval resource.
Decision unit, the schedule information for the comprehensive signal strength signal intensity weighted product score value according to each frequency and community physical resource selects main carrier.
Based on the device of user terminal selecting main carrier in the carrier aggregation technology that the above embodiment of the present invention provides, the current signal strength of each frequency in the network signal received and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before can be obtained respectively, and monitor PDCCH and carry out the decoding of PDCCH, obtain the schedule information of community physical resource, comprise the assignment information of frequency and time interval resource; Comprehensively select main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource.Compared with prior art, make the selection of main carrier more balanced, avoid user terminal and concentrate on the standby imbalance causing network load of certain carrier wave, and the increase of network signaling overhead that the method switched after avoiding accessing user terminal to network causes.
Further, then see Fig. 3, in carrier aggregation technology of the present invention user terminal selecting main carrier another embodiment of device in, signal strength signal intensity acquiring unit comprises memory cell, receiver and signal processing module.Wherein:
Memory cell, for storing the signal strength signal intensity of each frequency in each moment.
Receiver, for receiving network signal and demodulating the current signal strength of each frequency in network signal, and records the current signal strength of current time and each frequency in the memory unit.
Signal processing module, for obtaining each frequency presetting the historical signal intensity of each historical juncture in a period of time before, according to predetermined manner, the current signal strength of each frequency and historical signal intensity are weighted process respectively, obtain the signal strength signal intensity weighted product score value of each frequency.
In carrier aggregation technology of the present invention user terminal selecting main carrier another embodiment of device in, decision unit also can be used for comprehensive according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, judges whether the current resident carrier wave of user terminal is suitable as main carrier; If the current resident carrier wave of user terminal is not suitable as main carrier, perform the operation comprehensively selecting main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, and indicating user terminal resides on the main carrier of this selection; And if current resident carrier wave is suitable as main carrier, continue using current resident carrier wave as main carrier, so that user terminal continues to reside on current resident carrier wave.
Unrestricted according to an example of the device embodiment of user terminal selecting main carrier in the above-mentioned each carrier aggregation technology of the present invention, decision unit select signal strength signal intensity weighted product score value comparatively large specifically for the schedule information of the comprehensive signal strength signal intensity weighted product score value according to each frequency and community physical resource and the carrier wave of frequency resource free time as main carrier.
The embodiment of the present invention additionally provides a kind of user terminal, and it can comprise the device of user terminal selecting main carrier in the above-mentioned any embodiment carrier aggregation technology of the present invention.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, same or analogous part cross-reference between each embodiment.For device embodiment, because itself and embodiment of the method are substantially corresponding, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Method of the present invention, device may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method and apparatus of the present invention.Said sequence for the step of method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Whether the embodiment of the present invention can utilize current signal strength, in the past signal strength signal intensity and network load condition comprehensive analysis and judgement to select current resident carrier wave to be main carrier, thus avoids user terminal and concentrate on the standby imbalance causing network load of certain carrier wave.
Claims (9)
1. the method for user terminal selecting main carrier in carrier aggregation technology, is characterized in that, comprising:
Obtain the current signal strength of each frequency in the network signal received and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before respectively, and monitor physical downlink control channel PDCCH and carry out the decoding of PDCCH, obtain the schedule information of community physical resource, the schedule information of described community physical resource comprises the assignment information of frequency and time interval resource;
Comprehensively select main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource.
2. method according to claim 1, is characterized in that, the current signal strength obtaining each frequency in the network signal received comprises with the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before:
Receive network signal and demodulate the current signal strength of each frequency in network signal, and recording the current signal strength of current time and each frequency;
Obtaining each frequency presetting the historical signal intensity of each historical juncture in a period of time before, according to predetermined manner, the current signal strength of each frequency and historical signal intensity being weighted process respectively, obtaining the signal strength signal intensity weighted product score value of each frequency.
3. method according to claim 2, is characterized in that, also comprises:
Comprehensive according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, judge whether current resident carrier wave is suitable as main carrier;
Be not suitable as main carrier in response to current resident carrier wave, perform the described operation comprehensively selecting main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, and reside on the main carrier of this selection;
Be suitable as main carrier in response to current resident carrier wave, using current resident carrier wave as main carrier, continue to reside on current resident carrier wave.
4. the method according to claims 1 to 3 any one, is characterized in that, comprehensively selects main carrier to comprise according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource:
Comprehensively select signal strength signal intensity weighted product score value comparatively large according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource and the carrier wave of frequency resource free time as main carrier.
5. the device of user terminal selecting main carrier in carrier aggregation technology, is characterized in that, comprising:
Signal strength signal intensity acquiring unit, for obtaining the current signal strength of each frequency in the network signal that receives and the signal strength signal intensity weighted product score value presetting historical signal intensity in a period of time before respectively;
PDCCH decoding unit, for monitoring PCCH and carrying out the decoding of PDCCH, obtain the schedule information of community physical resource, the schedule information of described community physical resource comprises the assignment information of frequency and time interval resource;
Decision unit, the schedule information for the comprehensive signal strength signal intensity weighted product score value according to each frequency and community physical resource selects main carrier.
6. device according to claim 5, is characterized in that, described signal strength signal intensity acquiring unit comprises:
Memory cell, for storing the signal strength signal intensity of each frequency in each moment;
Receiver, for receiving network signal and demodulating the current signal strength of each frequency in network signal, and records the current signal strength of current time and each frequency in the memory unit;
Signal processing module, for obtaining each frequency presetting the historical signal intensity of each historical juncture in a period of time before, according to predetermined manner, the current signal strength of each frequency and historical signal intensity are weighted process respectively, obtain the signal strength signal intensity weighted product score value of each frequency.
7. device according to claim 6, is characterized in that, described decision unit, also for comprehensive according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, judge whether the current resident carrier wave of user terminal is suitable as main carrier; Main carrier is not suitable as in response to the current resident carrier wave of user terminal, perform the described operation comprehensively selecting main carrier according to the signal strength signal intensity weighted product score value of each frequency and the schedule information of community physical resource, and indicating user terminal resides on the main carrier of this selection; And be suitable as main carrier in response to current resident carrier wave, continue using current resident carrier wave as main carrier, so that user terminal continues to reside on current resident carrier wave.
8. the device according to claim 5 to 7 any one, it is characterized in that, described decision unit, the schedule information specifically for the comprehensive signal strength signal intensity weighted product score value according to each frequency and community physical resource select signal strength signal intensity weighted product score value comparatively large and the carrier wave of frequency resource free time as main carrier.
9. a user terminal, is characterized in that, comprises the device of user terminal selecting main carrier in the carrier aggregation technology described in claim 5 to 8 any one.
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| CN104717044B (en) | 2018-03-23 |
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