CN108271209A - A kind of resource selection method, terminal and base station - Google Patents
A kind of resource selection method, terminal and base station Download PDFInfo
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- CN108271209A CN108271209A CN201611259001.3A CN201611259001A CN108271209A CN 108271209 A CN108271209 A CN 108271209A CN 201611259001 A CN201611259001 A CN 201611259001A CN 108271209 A CN108271209 A CN 108271209A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Abstract
The present invention provides a kind of resource selection method, terminal and base station, method includes：The resource occupation information of each resource pool is obtained, wherein, resource occupation information represents ratio of the occupied resource in resource pool；When carrying out resource selection, the signal strength of resource to be selected is obtained；According to the resource occupation information of the resource pool where resource to be selected, signal strength is modified, obtains revised signal strength；Resource selection is carried out according to revised signal strength.Wherein, revised signal strength and resource occupation information positive correlation.The present invention is by influence of the load difference between considering multiple resource pools to resource collection, and in the identical resource of energy measurements, the preferential resource for selecting resource load low improves system performance.
Description
Technical field
The present invention relates to a kind of field of communication technology more particularly to resource selection method, terminal and base stations.
Background technology
In LTE V2X, if there is multicarrier is configured, under a carrier wave may there are one or multiple transmission resource pool configurations
To transmission terminal (UE, User Equipment).The resource selection of 4 Ad hoc modes of Mode of current LTE V2X, only
According to energy measurement (RSSI, the Received Signal carried out in the available resources in resource selection window in each subchannel
Strength Indicator), then measurement result is ranked up, is carried out in 20% minimum resource of measurement result random
Selection, to determine the transmission resource of this node.
Current resource selection mode, simply by energy measurement RSSI, although it is contemplated that the influence of interference, that is, work as RSSI
When relatively low, it is believed that system interference is relatively low；It sends UE and sends resource on the resource and be disturbed smaller, receiving node has bigger
It may receive successfully.And as RSSI higher, may there are the interference signal of other same frequencies or the influence with interior leakage interference, hair
UE is sent to send resource on the resource and is disturbed larger, it is relatively low that receiving node receives successful possibility.
But it is possible to which measurement RSSI can only carry out the measurement of energy with bandwidth, the signal condition received can not be confirmed, by
In the influence for receiving the factors such as measurement error, the shake of small magnitude signal, therefore accuracy of measurement is relatively low；In addition, even if to sending
Multiple resource pools are configured in UE, but do not consider the load difference between multiple resource pools, relatively low simply by accuracy of measurement
RSSI determines optional resource collection, and load balancing effect is undesirable, under the scene that can not be configured in more resource pools, realizes system
Load balancing, influence system performance.
Invention content
The present invention provides a kind of resource selection method, terminal and base station, solves UE in the prior art and is carrying out resource choosing
RSSI is only considered when selecting, it can not balanced resource pool load, the problem of system performance is poor.
The embodiment of the present invention provides a kind of resource selection method, applied to terminal, including：
The resource occupation information of each resource pool is obtained, wherein, resource occupation information represents occupied resource in resource pool
In ratio；
When carrying out resource selection, the signal strength of resource to be selected is obtained；
According to the resource occupation information of the resource pool where resource to be selected, signal strength is modified, is corrected
Signal strength afterwards；Wherein, revised signal strength and resource occupation information positive correlation；
Resource selection is carried out according to revised signal strength.
Wherein, according to the resource occupation information of the resource pool where resource to be selected, signal strength is modified, is obtained
The step of revised signal strength, including：
By the resource occupation information of the resource pool where resource to be selected, the product with the signal strength of resource to be selected,
It is determined as revised signal strength.
Wherein, the step of obtaining the resource occupation information of each resource pool, including：
Each resource pool is obtained in default measurement period in each channel busy than the channel busy ratio in CBR measurement period
CBR (Channel Busy Ratio) and compare CR than the resource occupation in CR measurement period in each resource occupation
(Consumption Ratio)；Wherein, it presets measurement period and includes multiple CBR measurement periods or CR measurement periods, CR statistics weeks
The length of phase is more than the length of CBR measurement periods；
According to the CR in the CBR in each CBR measurement periods and each CR measurement periods, each resource pool is calculated default
CBR average values and CR average values in measurement period；
By the resource occupation information for being determined as corresponding resource pond with value of CBR average values and CR average values.
Wherein, the step of obtaining the resource occupation information of each resource pool, including：
It periodically acquires the CBR of each resource pool and is sent to base station；
Receive the resource occupation information for each resource pool that base station is sent；Wherein, resource occupation information is base station according to more
What the CBR in corresponding resource pond that a terminal reports was calculated.
Wherein, it before the step of receiving the resource occupation information for each resource pool that base station is sent, further includes：
The location information of itself is periodically reported into base station；So that base station determines the adjacent end of terminal according to location information
End, the CBR of each resource pool further reported according to terminal and adjacent end calculate the resource occupation letter in respective resources pond
Breath.
Wherein, the step of resource selection being carried out according to revised signal strength, including：
Revised signal strength is subjected to ascending sort, obtains a signal strength sequence；
By the corresponding resource to be selected of top n signal strength in signal strength sequence, it is determined as the available resources of terminal.
Another aspect according to the present invention additionally provides a kind of resource selection method, applied to base station, including：
The channel busy for receiving each resource pool that multiple terminal periodics are sent compares CBR；
According to the CBR of each resource pool, the resource occupation information of each resource pool is calculated；
The resource occupation information for each resource pool being calculated is sent to corresponding terminal.
Wherein, according to the CBR of each resource pool, the step of calculating the resource occupation information of each resource pool, including：
The location information that terminal periodic is sent is received, and the adjacent end of terminal is determined according to location information；
The CBR of each resource pool reported according to terminal and adjacent end calculates the resource occupation letter of each resource pool
Breath.
Another aspect according to the present invention additionally provides a kind of terminal, including：
First acquisition module, for obtaining the resource occupation information of each resource pool, wherein, resource occupation information represents quilt
Occupy ratio of the resource in resource pool；
Second acquisition module, for when carrying out resource selection, obtaining the signal strength of resource to be selected；
Correcting module for the resource occupation information according to the resource pool where resource to be selected, carries out signal strength
It corrects, obtains revised signal strength；Wherein, revised signal strength and resource occupation information positive correlation；
Selecting module, for carrying out resource selection according to revised signal strength.
Wherein, correcting module includes：
Amending unit, for by the resource occupation information of the resource pool where resource to be selected, with the letter of resource to be selected
The product of number intensity, is determined as revised signal strength.
Wherein, the first acquisition module includes：
First acquisition unit counts for obtaining each resource pool in default measurement period in each channel busy than CBR
Channel busy in period compares CR than CBR and in each resource occupation than the resource occupation in CR measurement period；Wherein, in advance
If measurement period includes multiple CBR measurement periods or CR measurement periods, the length of CR measurement periods is more than the length of CBR measurement periods
Degree；
Computing unit, for according to the CR in the CBR in each CBR measurement periods and each CR measurement periods, calculating each
CBR average value and CR average value of a resource pool in default measurement period；
First determining module, for the resource for being determined as corresponding resource pond with value of CBR average values and CR average values to be accounted for
Use information.
Wherein, the first acquisition module includes：
Second acquisition unit, for periodically acquiring the CBR of each resource pool and being sent to base station；
First receiving unit, for receiving the resource occupation information of each resource pool of base station transmission；Wherein, resource occupation
Information is that the CBR in corresponding resource pond that base station is reported according to multiple terminals is calculated.
Wherein, the first acquisition module further includes：
The location information of itself is reported to base station by reporting unit for periodicity；So that base station is true according to location information
Determine the adjacent end of terminal, the CBR of each resource pool further reported according to terminal and adjacent end calculates respective resources
The resource occupation information in pond.
Wherein, selecting module includes：
Sequencing unit for revised signal strength to be carried out ascending sort, obtains a signal strength sequence；
Second determination unit, for by the corresponding resource to be selected of top n signal strength in signal strength sequence, being determined as
The available resources of terminal.
Another aspect according to the present invention additionally provides a kind of base station, including：
Receiving module, the channel busy for receiving each resource pool that multiple terminal periodics are sent compare CBR；
Computing module for the CBR according to each resource pool, calculates the resource occupation information of each resource pool；
Sending module, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
Wherein, computing module includes：
Second receiving unit for receiving the location information of terminal periodic transmission, and determines terminal according to location information
Adjacent end；
Second computing unit for the CBR of each resource pool reported according to terminal and adjacent end, calculates each money
The resource occupation information in source pond.
The advantageous effect of above-mentioned technical proposal of the present invention is：In the scene for supporting multiple resource pool configurations, obtain each
The occupied information of a resource pool considers the signal strength and load condition of each resource pool when carrying out resource selection,
The resource for preferentially selecting load relatively low when signal strength is identical, to improve system performance；In addition, while load balancing is ensured
It also is able to reduce the probability of resource collision.
Description of the drawings
Fig. 1 shows the flow charts of the resource selection method of first embodiment of the invention；
Fig. 2 represents the flow chart of the resource selection method of second embodiment of the invention；
Fig. 3 represents the flow chart of the resource selection method of third embodiment of the invention；
Fig. 4 represents the module diagram of the terminal of fourth embodiment of the invention；
Fig. 5 represents the structure diagram of the terminal of fifth embodiment of the invention；
Fig. 6 represents the flow chart of the resource selection method of sixth embodiment of the invention；
Fig. 7 represents the module diagram of the terminal of seventh embodiment of the invention；
Fig. 8 shows the structure diagrams of the core net of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.In the following description, such as specific configuration is provided and the specific detail of component is only
In order to help comprehensive understanding the embodiment of the present invention.It therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, it is omitted pair
The description of known function and construction.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic is included at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific feature, knots
Structure or characteristic can in any suitable manner combine in one or more embodiments.
In various embodiments of the present invention, it should be appreciated that the size of the serial number of following each processes is not meant to perform suitable
The priority of sequence, the execution sequence of each process should be determined with its function and internal logic, without the implementation of the reply embodiment of the present invention
Process forms any restriction.
In addition, the terms " system " and " network " are often used interchangeably herein.
In embodiment provided herein, it should be appreciated that " B corresponding with A " represents that B is associated with A, can be with according to A
Determine B.It is also to be understood that determine that B is not meant to determine B only according to A according to A, it can also be according to A and/or other information
Determine B.
In the embodiment of the present invention, the form for accessing net is unlimited, can include macro base station (Macro Base
Station), micro-base station (Pico Base Station), Node B (address of 3G mobile base stations), enhanced base station (eNB),
Family's enhanced base station (Femto eNB or Home eNode B or Home eNB or HeNB), relay station, access point, RRU
The access net of (Remote Radio Unit, far-end RF module), RRH (Remote Radio Head, remote radio head) etc..
User terminal can be mobile phone (or mobile phone) or other equipment that can send or receive wireless signal, including user
It is equipment, personal digital assistant (PDA), radio modem, wireless communication device, hand-held device, laptop computer, wireless
Phone, wireless local loop (WLL) stand, movable signal can be converted to CPE (the Customer Premise of WiFi signal
Equipment, client terminal) or intelligent movable hot spot, intelligent appliance or other obstructed remarkable operations just can it is spontaneous with it is mobile
Equipment of communication etc..
Specifically, it the embodiment provides a kind of service conversation processing method, in the prior art can not solve
The problem of PDU session successional to only support section range is handled.
First embodiment
As shown in Figure 1, the embodiment provides a kind of resource selection method, applied to terminal, specifically include with
Lower step：
Step 11：Obtain the resource occupation information of each resource pool.
Wherein, resource occupation information represents ratio of the occupied resource in resource pool.Specifically, refer here to provide more
Scene is configured in source pond, i.e., can select the resource occupied needed for itself in multiple resource pools for same terminal.Further, eventually
The resource pool at end includes receiving resource pool and sends resource pool, terminal connecing into row information using the resource received in resource pool
It receives, terminal utilizes and sends transmission of the resource in resource pool into row information.
Step 12：When carrying out resource selection, the signal strength of resource to be selected is obtained.
When terminal has information transmission, when especially needing to send resource, need to carry out the selection of resource, at this moment in resource
Can be with the signal strength measurement that each subchannel is carried out in resource be sent in selection window, the reception signal obtained on each sub-channels is strong
Degree instruction (RSSI, Received Signal Strength Indicator) information.
Step 13：According to the resource occupation information of the resource pool where resource to be selected, signal strength is modified, is obtained
To revised signal strength.
Wherein, revised signal strength and resource occupation information positive correlation.Due to only considering on each sub-channels
Signal strength can cause the load imbalance of resource.The problem of in order to avoid resource load imbalance, the embodiment of the present invention utilize acquisition
To the resource occupation information of each sub-channels the signal strength of corresponding subchannel is modified, obtain revised signal
Intensity.That is, resource occupation information to be determined as to the modifying factor of signal strength, the value of resource occupation information is higher to letter
The influence of number intensity is bigger, and the revised signal strength finally obtained is higher.It is worth noting that the embodiment of the present invention only arranges
For embodiment of the resource occupation information as signal strength modifying factor, other radio resource configuration parameters can also be used as signal
The modifying factor of intensity, the amendment weights of different modifying factors can be true according to its influence size to radio resource transfer performance
It is fixed.
Step 14：Resource selection is carried out according to revised signal strength.
Revised signal strength is considered outside the signal strength of the subchannel of different resource, has also examined each sub-channels
Occupancy situation, when carrying out resource selection, the resource that preferentially selects load relatively low when actual signal intensity is identical is with equilibrium
System resource improves the transmission performance of system.
Second embodiment
As shown in Fig. 2, the second embodiment of the present invention provides a kind of resource selection method, following steps are specifically included：
Step 21：Each resource pool is obtained in default measurement period in each channel busy than the letter in CBR measurement period
Road busy compares CR than CBR and in each resource occupation than the resource occupation in CR measurement period.
Wherein, channel busy is than CBR (Channel Busy Ratio, hereinafter referred to as CBR) and resource occupation compares CR
(Consumption Ratio, hereinafter referred to as CR) is both provided with corresponding measurement period.Default measurement period includes multiple CBR
Measurement period and/or multiple CR measurement periods, the length of CR measurement periods are more than the length of CBR measurement periods.Such as：CBR unites
The meter period is set as TCBR, in each CBR measurement periods, calculate other transmission terminals (UE) of system in each reception resource pool and occupy
Subchannel and TCBRThe ratio of interior sub-channel resource sum by CBR, can know each reception resource pool of receiving node
Occupation condition.In addition, CR measurement periods are set as TCR, in each CR measurement periods, computing terminal is from each transmission
The ratio for occupying sub-channel resource sum in subchannel and TCR is sent in resource pool, each hair of the terminal can be known by CR
Send the occupation condition of resource pool.
Further, the default measurement period of each resource pool can it is identical can also be different, and each resource pool is pre-
If measurement period should be preferably set to the CBR measurement periods in corresponding resource pond and the common multiple of CR measurement periods.
Step 22：According to the CR in the CBR in each CBR measurement periods and each CR measurement periods, each resource is calculated
CBR average value and CR average value of the pond in default measurement period.
Since default measurement period includes multiple CBR measurement periods or multiple CR measurement periods, and CBR measurement periods are small
In CR measurement periods, therefore the statistical result number statistical result than CR of the CBR counted in default measurement period
Number is more.It calculates each resource pool CBR average values and CR average values in default measurement period and specifically can refer in the following manner realization：
Assuming that the statistic period T of each resource pool occupancy situationpoolFor 2000ms.CBR statistic period TsCBRIt is counted for representative value 100ms, CR
Cycle TCRFor representative value 1000ms；So in TpoolIt can count to obtain 20 CBR statistical results and 2 CR statistics knots in period
Fruit.Assuming that some resource pool is 5% and 4% in 2 CR statistical results that default measurement period counts, 20 CBR statistics
The results are shown in Table 1：
Table 1
Above-mentioned statistical result can be calculated into CBR average values in the default measurement period by following equation and CR is put down
Mean value.
Wherein, CBRpoolFor CBR average value of the Current resource pond in default measurement period, CBR (i) represents the resource pool
The CBR counted in default measurement period, M are the number of CBR counted in default measurement period.It will be in table 1
Data are substituted into the formula, and CBR is calculatedpool=52%.It is similar with the mode of above-mentioned calculating CBR average values, CR average values
It can be calculated by following formula：
Wherein, CRpoolFor CR average value of the Current resource pond in default measurement period, CR (j) represents that the resource pool exists
The CR that statistics obtains in default measurement period, P are the number of CR counted in default measurement period.Above-mentioned 2 CR are united
Data (5% and 4%) in meter result are substituted into the formula, and CR is calculatedpool=4.5%.
Step 23：By the resource occupation information for being determined as corresponding resource pond with value of CBR average values and CR average values.
Specifically, according to RORpool=CBRpool+CRpoolCalculate the value of the resource occupation information in corresponding resource pond, then on
The value for stating the resource occupation information of resource pool is 56.5%.It is similar to above-mentioned calculating process, the money of other resource pools can be calculated
Source occupied information, it is assumed that the value of the resource occupation information of other two resource pool of terminal is 40% and 35.5%.Wherein, resource
Occupied information is higher, and the load for illustrating the resource pool is higher.
Step 24：When carrying out resource selection, the signal strength of resource to be selected is obtained.
When terminal has information transmission, when especially needing to send resource, need to carry out the selection of resource, at this moment in resource
The signal strength measurement that each subchannel is carried out in transmission resource can be used in selection window.
Step 25：By the resource occupation information of the resource pool where resource to be selected, the signal strength with resource to be selected
Product, be determined as revised signal strength.
That is, even if the signal strength of terminal measurement is identical, since the resource occupation information in different resource pond is different,
Resource occupation information is multiplied with the signal strength in corresponding resource pond so that the high resource pool of load actually causes signal strength
Measurement result become larger, (by signal strength ascending order arrangement for) in resource selection process, corresponding resource pool meets low
Sequence may be come before the high resource Pooled resources of load.
Step 26：Revised signal strength is subjected to ascending sort, obtains a signal strength sequence.
Step 27：By the corresponding resource to be selected of top n signal strength in signal strength sequence, it is determined as the available of terminal
Resource.
In addition, can also revised signal strength be subjected to descending arrangement, it in this way can be by N number of letter rear in signal strength sequence
Number corresponding resource to be selected of intensity is determined as the available resources of terminal.Although terminal is random selection available resources, due to money
Source occupied information is corrected signal strength, therefore can reduce the possibility that the higher resource pool of load falls into available resources
Property, to realize balanced system resource, improve the technique effect of the transmission performance of system.
In this way, the resource selection method of second embodiment of the invention, by terminal, each CBR unites in default measurement period
The CR in the CBR and each CR measurement periods in the period is counted, and calculates the resource occupation information of itself each resource pool.Specifically,
UE is sent in each transmission resource pool, the signal strength measurement RSSI of sub-channel resource is multiplied by resource occupation information ROR,
Revised signal strength is obtained, so as to screen the available resources of itself, the higher resource pool of load is reduced and falls into available resources
Possibility, to realize balanced system resource, improve the technique effect of the transmission performance of system.
3rd embodiment
More than second embodiment describes the resource occupation that the CBR arrived that terminal counts according to itself and CR carries out resource pool
The calculating of information, below the present embodiment introduce base station plan as a whole computing resource occupied information mode.
As shown in figure 3, the second embodiment of the present invention provides a kind of resource selection method, following steps are specifically included：
Step 31：It periodically acquires the CBR of each resource pool and is sent to base station.
The CBR of each resource pool that measurement obtains is reported to eNB by each UE, and eNB receives some money that multiple UE are reported
The resource occupation information in source pond, calculates the occupation proportion of the resource pool, such as power weightings, the method that is averaged calculate.Assuming that
Having 3 UE (such as A, B, C) to report respective transmission resource pool occupied information CBR respectively, wherein terminal A configurations send money to eNB
Source pond P1 and P2；Terminal B configurations send resource pool P1 and P3；Terminal C configurations send resource pool P2 and P3.ENB receives terminal A, B
The CBR of each resource pool reported with C is as shown in table 2：
Table 2
In this way, eNB calculates accounting for for the resource pool according to the resource occupation information for receiving some resource pool that multiple UE are reported
It is calculated with the method that ratio, such as use are averaged：CBR=(the 50%+ of CBR=(60%+40%)/2=50%, P2 of P1
70%) CBR=(30%+34%)/2=32% of/2=60%, P3, eNB is periodically each resource pool after the completion of calculating
Resource occupation information allocating respectively send UE.
Step 32：Receive the resource occupation information for each resource pool that base station is sent.
Wherein, resource occupation information is that the CBR in corresponding resource pond that base station is reported according to multiple terminals is calculated.
Since distant terminal is configured with identical resource pool, but it respectively occupies the situation of resource pool not
Can have an adverse effect, in order to eliminate the influence error of resource occupation information between distant terminal, before step 32,
The resource selection method still further comprises：The step of location information of itself is periodically reported into base station, so that base station root
The adjacent end of terminal is determined according to location information, the CBR of each resource pool further reported according to terminal and adjacent end
Calculate the resource occupation information in respective resources pond.In this way, base station calculates respective resources according to the CBR that terminal closer to the distance reports
The resource occupation information in pond, and then eliminate the resource collision problem of terminal closer to the distance.
Step 33：When carrying out resource selection, the signal strength of resource to be selected is obtained.
Step 34：By the resource occupation information of the resource pool where resource to be selected, the signal strength with resource to be selected
Product, be determined as revised signal strength.
Resource occupation information is multiplied with the signal strength in corresponding resource pond so that the high resource pool of load actually causes
The measurement result of signal strength becomes larger, and by taking terminal A as an example, basis is in each transmission resource pool during resource selection, antithetical phrase
Channel resource measurement result RSSI is multiplied by the resource occupation information of the resource pool of eNB configurations.Even if the RSSI in different resource pond is real
Border measured value is identical, and the resource occupation information of the resource pool due to being multiplied by eNB configurations, value is suitable after the RSSI processing of each resource pool
Sequence is followed successively by P2>P1>P3.The high resource pool of load actually causes RSSI results to become larger, and causes in resource selection process
Before RSSI sequences can come the high resource Pooled resources of load, falling into the possibility of 20% minimum resource of measurement result reduces.
Step 35：Revised signal strength is subjected to ascending sort, obtains a signal strength sequence.
Step 36：By the corresponding resource to be selected of top n signal strength in signal strength sequence, it is determined as the available of terminal
Resource.
Signal strength (RSSI) after correcting process is ranked up, in 20% minimum resource of measurement result carry out with
Machine selects the transmission resource of this terminal.
In this way, the resource selection method of third embodiment of the invention, eNB receives multiple UE (UE especially closer to the distance)
The resource occupation information of some resource pool reported calculates the resource occupation information of each resource pool；And periodically each money
The resource occupation information in source pond is sent to each transmission UE；UE is during resource selection, according to the antithetical phrase in each transmission resource pool
Channel resource measurement result RSSI be multiplied by the resource occupation information of the resource pool of eNB configurations to the signal strength of each resource pool into
Row is corrected, and so as to screen the available resources of itself, the possibility that the higher resource pool of load falls into available resources is reduced, to realize
Balanced system resource improves the technique effect of the transmission performance of system.
To sum up, in the scene for supporting more resource pool configurations, first embodiment to 3rd embodiment considers multiple resources
Load difference between pond has an impact the optional resource collection during resource selection, in the feelings of identical energy measurement result
Under condition, the possibility that the high resource of resource load enters optional available resources is reduced, increases the low resource of resource load
Into the possibility of optional available resources, the randomness of resource selection is maintained.While load balancing is carried out,
The probability of resource collision can be reduced, improves system performance.
Fourth embodiment
First embodiment above to 3rd embodiment respectively just the present invention resource selection method make introduction, below this reality
Example is applied to be described further its corresponding terminal with reference to attached drawing.
Specifically, as shown in figure 4, the terminal 400 of the embodiment of the present invention, including：
First acquisition module 410, for obtaining the resource occupation information of each resource pool, wherein, resource occupation information table
Show ratio of the occupied resource in resource pool；
Second acquisition module 420, for when carrying out resource selection, obtaining the signal strength of resource to be selected；
Correcting module 430, for the resource occupation information according to the resource pool where resource to be selected, to signal strength into
Row is corrected, and obtains revised signal strength；Wherein, revised signal strength and resource occupation information positive correlation；
Selecting module 440, for carrying out resource selection according to revised signal strength.
Wherein, correcting module 430 includes：
Amending unit, for by the resource occupation information of the resource pool where resource to be selected, with the letter of resource to be selected
The product of number intensity, is determined as revised signal strength.
Wherein, the first acquisition module 410 includes：
First acquisition unit counts for obtaining each resource pool in default measurement period in each channel busy than CBR
Channel busy in period compares CR than CBR and in each resource occupation than the resource occupation in CR measurement period；Wherein, in advance
If measurement period includes multiple CBR measurement periods or CR measurement periods, the length of CR measurement periods is more than the length of CBR measurement periods
Degree；
Computing unit, for according to the CR in the CBR in each CBR measurement periods and each CR measurement periods, calculating each
CBR average value and CR average value of a resource pool in default measurement period；
First determining module, for the resource for being determined as corresponding resource pond with value of CBR average values and CR average values to be accounted for
Use information.
Wherein, the first acquisition module 410 includes：
Second acquisition unit, for periodically acquiring the CBR of each resource pool and being sent to base station；
First receiving unit, for receiving the resource occupation information of each resource pool of base station transmission；Wherein, resource occupation
Information is that the CBR in corresponding resource pond that base station is reported according to multiple terminals is calculated.
Wherein, the first acquisition module 410 further includes：
The location information of itself is reported to base station by reporting unit for periodicity；So that base station is true according to location information
Determine the adjacent end of terminal, the CBR of each resource pool further reported according to terminal and adjacent end calculates respective resources
The resource occupation information in pond.
Wherein, selecting module 440 includes：
Sequencing unit for revised signal strength to be carried out ascending sort, obtains a signal strength sequence；
Second determination unit, for by the corresponding resource to be selected of top n signal strength in signal strength sequence, being determined as
The available resources of terminal.
The terminal embodiment of the present invention is terminal corresponding with the embodiment of above-mentioned resource selection method, and the above method is implemented
All realization rates in example can also reach identical technique effect suitable for the embodiment of the terminal.The terminal is being propped up
In the scene for holding multiple resource pool configurations, the occupied information of each resource pool is obtained, is considered when carrying out resource selection each
The signal strength and load condition of a resource pool, the resource for preferentially selecting load relatively low when signal strength is identical are to improve
System performance；In addition, in the probability for ensureing also to be able to reduce resource collision while load balancing.
5th embodiment
As shown in figure 5, the present embodiment provides a kind of terminal, including：
Processor 510；And the memory 530 being connected by bus interface 520 with the processor 510, it is described to deposit
Reservoir 530 is for storing the processor 510 used program and data when performing operation, when processor 510 calls simultaneously
When performing the program and data stored in the memory 530, following process is performed：
Processor 510 obtains the resource occupation information of each resource pool, wherein, resource occupation information represents occupied resource
Ratio in resource pool；
When carrying out resource selection, processor 510 further obtains the signal strength of resource to be selected；
Processor 510 also further performs：According to the resource occupation information of the resource pool where resource to be selected, to signal
Intensity is modified, and obtains revised signal strength；And resource selection is further carried out according to revised signal strength.Its
In, revised signal strength and resource occupation information positive correlation.
Wherein, transceiver 540 is connect with bus interface 520, for sending and receiving number under the control of the processor 510
According to.
It should be noted that in Figure 5, bus architecture can include the bus and bridge of any number of interconnection, specifically by
The various circuits of memory that the one or more processors and memory 530 that processor 510 represents represent link together.Always
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can also be linked at one by line architecture
It rises, these are all it is known in the art, and therefore, it will not be further described herein.Bus interface provides interface.It receives
Hair machine 540 can be multiple element, i.e., including transmitter and transceiver, provide for over a transmission medium with various other devices
The unit of communication.For different terminals, user interface 550, which can also be, external can be inscribed the interface for needing equipment, connection
Equipment include but not limited to keypad, display, loud speaker, microphone, control stick etc..Processor 510 is responsible for bus
Framework and common processing, memory 530 can store the used data when performing operation of processor 510.
It will be understood by those skilled in the art that realize above-described embodiment all or part of step can by hardware come
It completes, relevant hardware can also be indicated by computer program to complete, the computer program includes performing above-mentioned side
The instruction of some or all of step of method；And the computer program can be stored in a readable storage medium storing program for executing, storage medium
It can be any type of storage medium.
Sixth embodiment
First embodiment above treats that side describes the resource selection of the embodiment of the present invention respectively to the 5th embodiment with regard to terminal
Method and corresponding terminal, below the present embodiment the resource selection method of its network side will be done further with reference to attached drawing
Explanation.
Specifically, as shown in fig. 6, the resource selection method of the embodiment of the present invention, applied to base station, specifically includes following step
Suddenly：
Step 61：The channel busy for receiving each resource pool that multiple terminal periodics are sent compares CBR.
The CBR of each resource pool that measurement obtains is reported to eNB by each UE, and eNB receives some money that multiple UE are reported
The resource occupation information in source pond, calculates the occupation proportion of the resource pool, such as power weightings, the method that is averaged calculate.
Step 62：According to the CBR of each resource pool, the resource occupation information of each resource pool is calculated.
ENB calculates the occupancy ratio of the resource pool according to the resource occupation information for receiving some resource pool that multiple UE are reported
Example, as calculated using the method being averaged.
Specifically, since distant terminal is configured with identical resource pool, but it respectively occupies resource pool
Situation can't have an adverse effect, can be according in order to eliminate the influence error of resource occupation information between distant terminal
It is realized according to following steps：The location information that terminal periodic is sent is received, and the adjacent end of terminal is determined according to the location information
End；The CBR of each resource pool reported according to terminal and adjacent end calculates the resource occupation information of each resource pool.This
Sample, the CBR that base station is reported according to terminal closer to the distance calculate the resource occupation information in respective resources pond, so eliminate distance compared with
The resource collision problem of near terminal.
Step 63：The resource occupation information for each resource pool being calculated is sent to corresponding terminal.
The resource allocation occupied information for each resource pool being calculated periodically is sent to each transmission UE by eNB, with
Convenient for UE during resource selection, according in each transmission resource pool sub-channel resource measurement result RSSI be multiplied by eNB and match
The mode of the resource occupation information for the resource pool put is modified signal strength, so as to screen the available resources of itself, reduces
The higher resource pool of load falls into the possibility of available resources, to realize balanced system resource, improves the transmission performance of system
Technique effect.
7th embodiment
More than sixth embodiment just the present invention resource selection method make introduction, below the present embodiment will be with reference to attached drawing pair
Its corresponding base station is described further.
Specifically, as shown in fig. 7, the base station 700 of the embodiment of the present invention, including：
Receiving module 710, the channel busy for receiving each resource pool that multiple terminal periodics are sent compare CBR；
Computing module 720 for the CBR according to each resource pool, calculates the resource occupation information of each resource pool；
Sending module 730, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
Wherein, computing module 720 includes：
Second receiving unit for receiving the location information of terminal periodic transmission, and determines terminal according to location information
Adjacent end；
Second computing unit for the CBR of each resource pool reported according to terminal and adjacent end, calculates each money
The resource occupation information in source pond.
The base station embodiment of the present invention is base station corresponding with the embodiment of above-mentioned resource selection method, and the above method is implemented
All realization rates in example can also reach identical technique effect suitable for the embodiment of the base station.The base station.
8th embodiment
In order to preferably realize above-mentioned purpose, as shown in figure 8, the sixth embodiment of the present invention additionally provides a kind of base station,
The base station includes：Processor 800；The memory 820 that is connected by bus interface with the processor 800 and by total
The transceiver 810 that line interface is connected with processor 800；The memory 820 is performing operation for storing the processor
When used program and data；By the 810 transmission data information of transceiver or pilot tone, also pass through the transceiver
810 receive uplink control channel；When processor 800 calls and performs the program and data that are stored in the memory 820,
Realize following function module：
Receiving module, the channel busy for receiving each resource pool that multiple terminal periodics are sent compare CBR；
Computing module for the CBR according to each resource pool, calculates the resource occupation information of each resource pool；
Sending module, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
Processor 800 is used to read the program in memory 820, performs following process：According to the CBR of each resource pool,
Calculate the resource occupation information of each resource pool.
Transceiver 810 for sending and receiving data under the control of processor 800, specifically performs following process：It receives
The CBR for each resource pool that multiple terminal periodics are sent and the resource occupation information by each resource pool being calculated
It is sent to corresponding terminal.
Wherein, in fig. 8, bus architecture can include the bus and bridge of any number of interconnection, specifically by processor 800
The various circuits for the memory that the one or more processors and memory 820 of representative represent link together.Bus architecture is also
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can be linked together, these are all
It is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 810 can
To be multiple element, i.e., including transmitter and transceiver, provide the list for communicating over a transmission medium with various other devices
Member.Processor 800 is responsible for bus architecture and common processing, and memory 820 can store processor 800 and perform operation
When used data.
In addition it should be pointed out that in apparatus and method of the present invention, it is clear that each component or each step are can to divide
It solves and/or reconfigures.These decompose and/or reconfigure the equivalent scheme that should be regarded as the present invention.Also, perform above-mentioned system
The step of column processing, can perform in chronological order according to the sequence of explanation naturally, but not need to be centainly suitable according to the time
Sequence performs, and certain steps can perform parallel or independently of one another.For those of ordinary skill in the art, it is to be understood that this
The whole either any steps or component of the method and apparatus of invention, can be in any computing device (including processor, storage
Medium etc.) either to be realized with hardware, firmware, software or combination thereof in the network of computing device, this is this field
What those of ordinary skill can be achieved in the case of the explanation for having read the present invention with their basic programming skill.
Therefore, the purpose of the present invention can also by run on any computing device a program or batch processing come
It realizes.The computing device can be well known fexible unit.Therefore, the purpose of the present invention can also be included only by offer
The program product of the program code of the method or device is realized to realize.That is, such program product is also formed
The present invention, and the storage medium for being stored with such program product also forms the present invention.Obviously, the storage medium can be
Any well known storage medium or any storage medium that developed in the future.It may also be noted that the present invention's
In device and method, it is clear that each component or each step can be decomposed and/or be reconfigured.These decomposition and/or again group
Close the equivalent scheme that should be regarded as the present invention.Also, the step of performing above-mentioned series of processes can be naturally according to the sequence of explanation
It performs in chronological order, but does not need to centainly perform sequentially in time.Certain steps can parallel or independently of one another
It performs.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (16)
1. a kind of resource selection method, applied to terminal, which is characterized in that including：
The resource occupation information of each resource pool is obtained, wherein, the resource occupation information represents occupied resource in the money
Ratio in the pond of source；
When carrying out resource selection, the signal strength of resource to be selected is obtained；
According to the resource occupation information of the resource pool where the resource to be selected, the signal strength is modified, is obtained
Revised signal strength；Wherein, revised signal strength and the resource occupation information positive correlation；
Resource selection is carried out according to revised signal strength.
2. resource selection method according to claim 1, which is characterized in where resource to be selected described in the basis
The resource occupation information of resource pool, the step of being modified to the signal strength, obtain revised signal strength, including：
Multiply by the resource occupation information of the resource pool where the resource to be selected, with the signal strength of the resource to be selected
Product, is determined as revised signal strength.
3. resource selection method according to claim 1, which is characterized in that the resource occupation for obtaining each resource pool
The step of information, including：
Obtain in default measurement period each resource pool each channel busy than the channel busy in CBR measurement period than CBR,
And compare CR than the resource occupation in CR measurement period in each resource occupation；Wherein, the default measurement period includes multiple
CBR measurement periods or CR measurement periods, the length of the CR measurement periods are more than the length of CBR measurement periods；
According to the CR in the CBR in each CBR measurement periods and each CR measurement periods, each resource pool is calculated in default statistics
CBR average values and CR average values in period；
By the resource occupation information for being determined as corresponding resource pond with value of the CBR average values and CR average values.
4. resource selection method according to claim 1, which is characterized in that the resource occupation for obtaining each resource pool
The step of information, including：
It periodically acquires the CBR of each resource pool and is sent to base station；
Receive the resource occupation information for each resource pool that the base station is sent；Wherein, the resource occupation information is the base
Stand what the CBR in corresponding resource pond reported according to multiple terminals was calculated.
5. resource selection method according to claim 4, which is characterized in that each money for receiving the base station and sending
Before the step of resource occupation information in source pond, further include：
The location information of itself is periodically reported into base station；So that base station determines the phase of the terminal according to the location information
Adjacent terminal, the CBR of each resource pool further reported according to the terminal and adjacent end calculate the money in respective resources pond
Source occupied information.
6. resource selection method according to claim 1, which is characterized in that described to be carried out according to revised signal strength
The step of resource selection, including：
Revised signal strength is subjected to ascending sort, obtains a signal strength sequence；
By the corresponding resource to be selected of top n signal strength in the signal strength sequence, it is determined as the available resources of terminal.
7. a kind of resource selection method, applied to base station, which is characterized in that including：
The channel busy for receiving each resource pool that multiple terminal periodics are sent compares CBR；
According to the CBR of each resource pool, the resource occupation information of each resource pool is calculated；
The resource occupation information for each resource pool being calculated is sent to corresponding terminal.
8. resource selection method according to claim 7, which is characterized in that the CBR according to each resource pool,
The step of calculating the resource occupation information of each resource pool, including：
The location information that terminal periodic is sent is received, and the adjacent end of the terminal is determined according to the location information；
The CBR of each resource pool reported according to the terminal and adjacent end calculates the resource occupation letter of each resource pool
Breath.
9. a kind of terminal, which is characterized in that including：
First acquisition module, for obtaining the resource occupation information of each resource pool, wherein, the resource occupation information represents quilt
Occupy ratio of the resource in the resource pool；
Second acquisition module, for when carrying out resource selection, obtaining the signal strength of resource to be selected；
Correcting module, for the resource occupation information of the resource pool where the resource to be selected according to, to the signal strength
It is modified, obtains revised signal strength；Wherein, revised signal strength and the resource occupation information positive correlation；
Selecting module, for carrying out resource selection according to revised signal strength.
10. terminal according to claim 9, which is characterized in that the correcting module includes：
Amending unit, for by the resource occupation information of the resource pool where the resource to be selected, with the resource to be selected
Signal strength product, be determined as revised signal strength.
11. terminal according to claim 9, which is characterized in that first acquisition module includes：
First acquisition unit, for obtaining in default measurement period each resource pool in each channel busy than CBR measurement period
Interior channel busy compares CR than CBR and in each resource occupation than the resource occupation in CR measurement period；Wherein, it is described pre-
If measurement period includes multiple CBR measurement periods or CR measurement periods, the length of the CR measurement periods is more than CBR measurement periods
Length；
Computing unit, for according to the CR in the CBR in each CBR measurement periods and each CR measurement periods, calculating each money
CBR average value and CR average value of the source pond in default measurement period；
First determining module, for the resource for being determined as corresponding resource pond with value of the CBR average values and CR average values to be accounted for
Use information.
12. terminal according to claim 9, which is characterized in that first acquisition module includes：
Second acquisition unit, for periodically acquiring the CBR of each resource pool and being sent to base station；
First receiving unit, for receiving the resource occupation information for each resource pool that the base station is sent；Wherein, the resource
Occupied information is that the CBR in corresponding resource pond that the base station is reported according to multiple terminals is calculated.
13. terminal according to claim 12, which is characterized in that first acquisition module further includes：
The location information of itself is reported to base station by reporting unit for periodicity；So that base station is true according to the location information
The adjacent end of the fixed terminal, the CBR of each resource pool further reported according to the terminal and adjacent end are calculated
The resource occupation information in respective resources pond.
14. terminal according to claim 9, which is characterized in that the selecting module includes：
Sequencing unit for revised signal strength to be carried out ascending sort, obtains a signal strength sequence；
Second determination unit, for by the corresponding resource to be selected of top n signal strength in the signal strength sequence, being determined as
The available resources of terminal.
15. a kind of base station, which is characterized in that including：
Receiving module, the channel busy for receiving each resource pool that multiple terminal periodics are sent compare CBR；
Computing module for the CBR according to each resource pool, calculates the resource occupation information of each resource pool；
Sending module, for the resource occupation information for each resource pool being calculated to be sent to corresponding terminal.
16. base station according to claim 15, which is characterized in that the computing module includes：
Second receiving unit, for receiving the location information of terminal periodic transmission, and according to determining the location information
The adjacent end of terminal；
Second computing unit for the CBR of each resource pool reported according to the terminal and adjacent end, calculates each money
The resource occupation information in source pond.
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| CN108271209B (en) | 2019-09-17 |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210604 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |