CN106535345A

CN106535345A - Method for adjusting channel interception threshold value and base station

Info

Publication number: CN106535345A
Application number: CN201510587222.2A
Authority: CN
Inventors: 谷俊嵘; 刘建国; 韩锋; 陶涛; 孟艳; 沈钢
Original assignee: Alcatel Lucent Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2017-03-22
Anticipated expiration: 2035-09-15
Also published as: CN106535345B

Abstract

The embodiment of the invention relates to a method for adjusting a channel interception threshold value and a base station. The method may include determining that communication performance related with a channel interception threshold value is lower than a predetermined level; determining an optimal channel interception threshold value making the communication performance optimal; and adjusting a current channel interception threshold value based on the optimal channel interception threshold value. The method for adjusting the channel interception threshold value provided by the embodiment of the invention adopts a self-adaptive channel interception threshold value of channel interception to adjust and design, thus the possible hidden node problem and exposed node problem can be avoided, and the limitation of performing channel interception threshold value adjustment in a single base station can be broken through, thereby solving the problems in the prior art.

Description

The method of adjustment channel sense threshold value and base station

Technical field

Embodiment of the disclosure relates generally to wireless communication technology field, and more particularly to The method of adjustment channel sense threshold value and base station.

Background technology

Third generation partner program 3GPP being routinely deployed in licensed band it is long-term Evolution LTE is faced with the tremendous growth of data traffic.Even if LTE efficiently can be utilized Frequency spectrum, but permit that the frequency band for LTE is very limited amount of and is exclusively to be reserved 's.Therefore, considering LTE is deployed in the unlicensed band less than 6GHz, this The LTE auxiliary become to unlicensed band deployment is accessed into (LAA).Additionally, main attribution In the property of height scheduling, the performance of LAA has been better than WiFi (for example, 802.11ac). Therefore, LAA becomes operator by the candidate likely of the next stage LTE for disposing.

In wireless communication procedure, the radio environment of complexity is attributed to, for LTE auxiliary connects The interference for entering each base station of (LAA) is likely to what is differed.But, when they according to When the step of listem-before-talk (LBT), attempts carrying out channel sense (CCA or eCCA), mesh Front practice is using constant channel sense threshold value.Therefore, when being provided with incorrect in base station Channel sense threshold value when, base station is likely encountered one of following two problems.Even if first, It is noiseless that channel sense indicates channel, but also suffers from strong jamming when data are delivered, from And during UE (edge UE) receiving data of some quantity, signal and interference-to-noise ratio SINR It is very low.This belongs to hidden node problem.Second, although channel condition is reported as well, But throughput of system degenerates or very low, that is, possess good SINR, but emitter Can be less.This belongs to exposed node problems.

Why two kinds of problems above are because that the channel sense of base station arranges threshold value not Rationally.Obviously, each base station needs appropriate channel sense threshold value.In terms of this, to letter The adjustment of road sensed threshold is reached an agreement as research project in 3GPP 80bis meetings. Additionally, channel sense threshold value should be adaptive to the radio environment of complexity, so that UE tools There are gratifying performance, such as good SINR and handling capacity.

The content of the invention

In view of the above-mentioned problems in the prior art, the purpose of embodiment of the disclosure is to carry Method and base station for adjusting channel sense threshold value, which adopts the adaptive letter of channel sense Road sensed threshold adjusted design, so as to LAA can avoid possible hidden node problem and sudden and violent The problem of dew node, and can break through channel sense adjusting thresholds are carried out in single base station Limit, so as to solve of the prior art above-mentioned and other problems.

According to the first aspect of the disclosure, there is provided a kind of method of adjustment channel sense threshold value, The method can include：It is determined that the communication performance relevant with channel sense threshold value is less than predetermined water It is flat；It is determined that so that the optimum preferred channels sensed threshold of communication performance；And it is based on preferred channels Sensed threshold is adjusting current channel sense threshold value.

In certain embodiments, it is determined that so that the optimum preferred channels sensed threshold of communication performance can To include：In the predetermined interval of channel sense threshold value, it is determined that so that communication performance is optimum Preferred channels sensed threshold.

In certain embodiments, based on preferred channels sensed threshold adjusting current channel sense Threshold value can include：Current channel sense threshold value is adjusted towards preferred channels sensed threshold It is whole.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined It is better than at lower limit and at the upper limit, being better than the left neighborhood of the upper limit at the interval upper limit of value, it is determined that Preferred channels sensed threshold is the upper limit of predetermined interval.In these embodiments, based on most Excellent channel sense threshold value can include adjusting current channel sense threshold value：Increased with the first step-length Big current channel sense threshold value.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined At the interval upper limit of value better than at lower limit and the upper limit left neighborhood better than the upper limit at, it is determined that Preferred channels sensed threshold is located between the upper limit and lower limit of predetermined interval.In these enforcements In example, current channel sense threshold value is adjusted based on preferred channels sensed threshold can be included： If current channel sense threshold value is less than preferred channels sensed threshold, increased with the first step-length Current channel sense threshold value, if current channel sense threshold value intercepts threshold more than preferred channels Value, then reduce current channel sense threshold value with the first step-length.In certain embodiments, can be with Preferred channels sensed threshold is determined using binary search.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined It is better than at the upper limit and at lower limit, being better than the right neighborhood of lower limit at the interval lower limit of value, it is determined that Preferred channels sensed threshold is the lower limit of predetermined interval.In these embodiments, based on most Excellent channel sense threshold value can include adjusting current channel sense threshold value：Subtracted with the first step-length Little current channel sense threshold value.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined At the interval lower limit of value better than at the upper limit and lower limit right neighborhood better than lower limit at, it is determined that Preferred channels sensed threshold is located between the upper limit and lower limit of predetermined interval.In these enforcements In example, current channel sense threshold value is adjusted based on preferred channels sensed threshold can be included： If current channel sense threshold value is less than preferred channels sensed threshold, increased with the first step-length Current channel sense threshold value, if current channel sense threshold value intercepts threshold more than preferred channels Value, then reduce current channel sense threshold value with the first step-length.In certain embodiments, can be with Preferred channels sensed threshold is determined using binary search.

In certain embodiments, the method may further include：When communication performance be not less than it is pre- When determining level, stop the current channel sense threshold value of adjustment.

In certain embodiments, have been adjusted to preferred channels in current channel sense threshold value to detect When listening threshold value, and communication performance still to be below predeterminated level, the method may further include： Request message is sent to adjacent base station, to ask adjacent base station to carry out its channel sense threshold value Adjustment；Notification message is received from adjacent base station, to notify adjusted its channel of adjacent base station Sensed threshold；In response to receiving notification message, determine communication performance whether less than predeterminated level； And if communication performance is less than predeterminated level, then request message is sent simultaneously to adjacent base station again And repeat abovementioned steps；If communication performance is not less than predeterminated level, stop to adjacent base station Send request message.

In certain embodiments, it is possible to use X2 signalings are being communicated with adjacent base station.

In certain embodiments, communication performance can include short-time communication handling capacity.

In certain embodiments, method can semi-statically be performed.

In certain embodiments, method can be performed under the auxiliary of user equipment.

According to the second aspect of the disclosure, there is provided a kind of method of adjustment channel sense threshold value, The method can include：Request message is received from adjacent base station, request message is to ask to letter Road sensed threshold is adjusted；In response to request message, it is determined that so that having with channel sense threshold value The optimum preferred channels sensed threshold of the communication performance of pass；Adjusted based on preferred channels sensed threshold Whole current channel sense threshold value, while keeping communication performance to be not less than predeterminated level；And to Adjacent base station sends a notification message, to notify that channel sense threshold value is adjusted to adjacent base station It is whole.

In certain embodiments, based on preferred channels sensed threshold adjusting current channel sense Threshold value can include：Current channel sense threshold value is adjusted away from preferred channels sensed threshold It is whole.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined It is better than at lower limit and at the upper limit, being better than the left neighborhood of the upper limit at the interval upper limit of value, it is determined that Preferred channels sensed threshold is the upper limit of predetermined interval.In these embodiments, based on most Excellent channel sense threshold value can include adjusting current channel sense threshold value：Subtracted with the second step-length Little current channel sense threshold value.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined At the interval upper limit of value better than at lower limit and the upper limit left neighborhood better than the upper limit at, it is determined that Preferred channels sensed threshold is located between the upper limit and lower limit of predetermined interval.In these enforcements In example, current channel sense threshold value is adjusted based on preferred channels sensed threshold can be included： If current channel sense threshold value is less than preferred channels sensed threshold, reduced with the second step-length Current channel sense threshold value, if current channel sense threshold value intercepts threshold more than preferred channels Value, then increase current channel sense threshold value with the second step-length.In certain embodiments, use Binary search is determining preferred channels sensed threshold.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined It is better than at the upper limit and at lower limit, being better than the right neighborhood of lower limit at the interval lower limit of value, it is determined that Preferred channels sensed threshold is the lower limit of predetermined interval.In these embodiments, based on most Excellent channel sense threshold value can include adjusting current channel sense threshold value：Increased with the second step-length Big current channel sense threshold value.

In certain embodiments, in the predetermined interval of channel sense threshold value, it is determined that so that The optimum preferred channels sensed threshold of communication performance can include：If communication performance is taken predetermined At the interval lower limit of value better than at the upper limit and lower limit right neighborhood better than lower limit at, it is determined that Preferred channels sensed threshold is located between the upper limit and lower limit of predetermined interval.In these enforcements In example, current channel sense threshold value is adjusted based on preferred channels sensed threshold can be included： If current channel sense threshold value is less than preferred channels sensed threshold, reduced with the second step-length Current channel sense threshold value, if current channel sense threshold value intercepts threshold more than preferred channels Value, then increase current channel sense threshold value with the second step-length.In certain embodiments, use Binary search is determining preferred channels sensed threshold.

According to the third aspect of the disclosure, there is provided a kind of base station, the base station can include：The One determining unit, is configured to determine that the communication performance relevant with channel sense threshold value less than predetermined Level；Second determining unit, is configured to determine that so that the optimum preferred channels of communication performance are detectd Listen threshold value；And adjustment unit, it is configured to based on preferred channels sensed threshold current to adjust Channel sense threshold value.

According to the fourth aspect of the disclosure, there is provided a kind of base station, the base station can include：Connect Unit being received, being configured to request message be received from adjacent base station, request message is to ask to letter Road sensed threshold is adjusted；Determining unit, is configured to respond to request message, it is determined that making Obtain the optimum preferred channels sensed threshold of the communication performance relevant with channel sense threshold value；Adjustment is single Unit, is configured to based on preferred channels sensed threshold adjust current channel sense threshold value, together When keep communication performance be not less than predeterminated level；And transmitting element, it is configured to adjacent base Station sends a notification message, to notify that channel sense threshold value has been adjusted to adjacent base station.

Embodiment of the disclosure provides adaptive channel sense (CCA, eCCA) threshold value Adjusted design scheme, so as to LAA can avoid possible hidden node problem and exposed node Problem, and the restriction that channel sense adjusting thresholds are carried out in single base station can be broken through.

Description of the drawings

Detailed description below is read by reference to accompanying drawing, embodiment of the disclosure above-mentioned and Other purposes, feature and advantage will be easy to understand.In the accompanying drawings：

Fig. 1 schematically shows the concealed nodes caused by the too high channel sense threshold value of base station Problem.

Fig. 2 schematically shows the exposed node caused by the too low channel sense threshold value of base station Problem.

Fig. 3 schematically shows the relation between the handling capacity of base station and channel sense threshold value.

Fig. 4 schematically show in accordance with an embodiment of the present disclosure for adjusting channel sense threshold The method of value.

Fig. 5 schematically show in accordance with an embodiment of the present disclosure for adjusting channel sense threshold The other method of value.

Fig. 6 schematically show in accordance with an embodiment of the present disclosure for adjusting between the base stations The method of channel sense threshold value.

Fig. 7 schematically shows base station in accordance with an embodiment of the present disclosure.

Fig. 8 schematically shows another base station in accordance with an embodiment of the present disclosure.

Specific embodiment

Some exemplary embodiments shown in below with reference to the accompanying drawings are describing the disclosure Principle and spirit.It should be appreciated that describing these specific embodiments merely to making this area Technical staff better understood when and realize embodiment of the disclosure, and not by any way Limit the scope of the present disclosure.

Fig. 1 and Fig. 2 schematically show and use irrational channel sense due to base station Threshold value and two kinds of possible problems causing, i.e. hidden node problem and exposed node problems. In hidden node problem illustrated in fig. 1, base station to intercept scope less and can not detect which The node of his RAT/ operators, but the node can be to the radio communication between base station and UE Interfere.Conversely, in exposed node problems illustrated in fig. 2, scope is intercepted in base station Node that is excessive and detecting other RAT/ operators, but in fact the node can't be right Radio communication between base station and UE is interfered.

As it was noted above, why both problems are because the channel sense threshold value of base station Arrange unreasonable.Obviously, each base station is required for arranging appropriate channel sense threshold value.In order to This problem is solved, embodiment of the disclosure provides a kind of method of adjustment channel sense threshold value And a kind of base station.Hereinafter, the base station in general wireless communications environment will be provided first Handling capacity and its channel sense threshold value between relation, on this basis, will be further concrete Adjustment channel sense threshold method in accordance with an embodiment of the present disclosure and base station are described.

Fig. 3 schematically shows the relation between the handling capacity of base station and channel sense threshold value. As shown in Figure 3, the relation between the handling capacity of base station and channel sense threshold value may be deposited In three kinds of following possible situations.It will be understood to those skilled in the art that to channel sense threshold Value is adjusted between the quantity and quality of the spectrum opportunities in fact providing found Plant compromise.This compromise handling capacity for being directly related to base station, and this handling capacity is great majority One Major Systems performance indications of people's concern.

As shown in Figure 3, in situation 1, the maximum of handling capacity is in channel sense threshold Between the lower limit and the upper limit of value, handling capacity increases with the increase of channel sense threshold value first, Begin to decline after reaching the maximum.Throughput curve in situation 2 and situation 3 can be seen Make the translation of throughput curve in situation 1.In situation 2, handling capacity is with channel sense threshold Value increases between lower limit and the upper limit and monotonously reduces.In situation 3, handling capacity is with letter Road sensed threshold increases between lower limit and the upper limit and monotonously increases.

Every kind of situation in these three situations occurs under different disturbed conditions, correspondingly Ground, will take the different adjustment modes to channel sense threshold value.Therefore, base station regularly will be known Which kind of situation is relation not between its handling capacity and threshold value be in.Without loss of generality, below with nothing As an example, introduce based on monotonicity to recognize its handling capacity in a base station in line communication network Concrete grammar of the relation between threshold value in which kind of situation.

Make η₁For the channel sense threshold value of the base station, TP_ηmaxAnd TP_ηminRespectively η₁=η_max And η_minWhen handling capacity in short-term, △ is one little on the occasion of TP_ηmax’And TP_ηmin’Respectively Work as η₁=η_max- △ and η_minHandling capacity in short-term during+△.

Recognize concrete side of the relation between the handling capacity of the base station and threshold value in which kind of situation Method is：If TP_ηmax>TP_ηminAnd TP_ηmax>TP_ηmax’Then can determine that base station is in In situation 3, otherwise can determine base station in situation 1.If TP_ηmax<TP_ηminAnd And TP_ηmin>TP_ηmin’, then can determine that base station, in situation 2, otherwise can determine base Stand in situation 1.

Fig. 4 schematically shows adjustment channel sense threshold value in accordance with an embodiment of the present disclosure Method 400.Method 400 can be performed by the base station in cordless communication network, especially, The base station 700 that method 400 can be described later referring to Fig. 7 by this paper is performing.

As shown in Figure 4, method 400 can enter step 401 after start-up. In step 401, the base station of execution method 400 can determine relevant with channel sense threshold value leading to Letter performance is less than predeterminated level.In response to this determination, the base station of execution method 400 can be opened The channel sense threshold value current to which that begin is adjusted.

It will be understood to those skilled in the art that the communication performance in step 401 can be for example Handling capacity or communicate with handling capacity in short-term and relevant parameter, or can reflect in short-term Other suitable parameters of performance.In terms of this, those skilled in the art can be according to tool The application scenarios and technological accumulation and inheritance of body come be selected to characterize communication performance design parameter, this public affairs The embodiment opened is unrestricted in terms of this.It will also be understood by those skilled in the art that In step 401, " relevant with channel sense threshold value " means that the communication performance is detectd with channel Listen what threshold value was associated.In other words, by adjusting channel sense threshold value, correspondingly can adjust The whole communication performance.Especially, the communication performance can with channel sense threshold value exist similar to Relation as depicted in figure 3.Those skilled in the art is it is further appreciated that step 401 In predeterminated level can be predefined according to related technology scene and technical requirements.

Then, method 400 may be advanced to step 402.In step 402, perform method 400 base station may be determined such that the optimum preferred channels sensed threshold of communication performance.

As described above, the communication performance can be associated with channel sense threshold value. Therefore, it is possible to use appropriate method determines drawing so that the optimum preferred channels of communication performance are detectd Listen threshold value.It is, for example possible to use the method introduced after a while herein draws preferred channels to determine Sensed threshold.It is understood, however, that those skilled in the art can also be using in this area Determining preferred channels sensed threshold, embodiment of the disclosure is in this side for known additive method Face is unrestricted.Especially, preferred channels sensed threshold can be gulping down as depicted in figure 3 The amount of telling is with the maximum occurrences on the change curve of channel sense threshold value.

According to some embodiments of the present disclosure, step 402 may further include：Detect in channel Listen in the predetermined interval of threshold value, it is determined that so that the optimum preferred channels of communication performance intercept threshold Value.It will be understood to those skilled in the art that for the value of channel sense threshold value, base station can With with a predetermined interval.In this case, determine preferred channels sensed threshold The step of can be reduced in the predetermined interval determine preferred channels sensed threshold.

According to some embodiments of the present disclosure, if communication performance is in the upper limit of predetermined interval Place, better than at the left neighborhood of the upper limit is then can determine most better than at lower limit and at the upper limit Excellent channel sense threshold value is the upper limit of predetermined interval.Such case is can correspond to such as Fig. 3 In dotted line shown by situation 3.As shown in Figure 3, in situation 3, handling capacity It is monotone increasing in the predetermined interval of channel sense threshold value, when channel sense threshold value is arrived Up to predetermined span the upper limit when, reach peak throughput.

According to some embodiments of the present disclosure, if communication performance is in the upper limit of predetermined interval Place, better than at the upper limit is then can determine most better than at lower limit and at the left neighborhood of the upper limit Excellent channel sense threshold value is located between the upper limit and lower limit of predetermined interval.Such case can be with In corresponding to such as Fig. 3 it is shown in solid go out situation 1.As shown in Figure 3, in situation In 1, handling capacity in the predetermined interval of channel sense threshold value experienced first to rise and decline afterwards Change procedure, when channel sense threshold value is reached between the lower limit and the upper limit of predetermined span During certain value, peak throughput is reached.

According to some embodiments of the present disclosure, if communication performance is in the lower limit of predetermined interval Place better than at the upper limit and at lower limit better than at the right neighborhood of lower limit, it is determined that optimum letter Road sensed threshold is the lower limit of predetermined interval.Such case is can correspond to as in Fig. 3 Situation 2 shown by dotted line.As shown in Figure 3, in situation 2, handling capacity is in letter It is monotonic decreasing in the predetermined interval of road sensed threshold, when channel sense threshold value reaches pre- When determining the lower limit of span, peak throughput is reached.

According to some embodiments of the present disclosure, if communication performance is in the lower limit of predetermined interval Place better than at the upper limit and at the right neighborhood of lower limit better than at lower limit, it is determined that optimum letter Road sensed threshold is located between the upper limit and lower limit of predetermined interval.Such case can be corresponded to In such as Fig. 3 it is shown in solid go out situation 1.As shown in Figure 3, in situation 1, Handling capacity experienced in the predetermined interval of channel sense threshold value and first rise the change for declining afterwards Change process, when channel sense threshold value reaches certain between the lower limit and the upper limit of predetermined span During value, peak throughput is reached.

Then, method 400 may be advanced to step 403.In step 403, perform method 400 base station can adjust current channel sense threshold value based on preferred channels sensed threshold.

It will be understood to those skilled in the art that once it is determined that preferred channels sensed thresholds, hold The base station of row method 400 just can according to determined by preferred channels sensed threshold come to current Channel sense threshold value is adjusted, in order to optimize current channel sense threshold value.This area Technical staff is further appreciated that there may be a variety of concrete adjustment modes.For example, may be used To be adjusted using adjustment mode described later herein, it is also possible to using as is generally known in the art Other adjustment modes be adjusted, present disclosure is unrestricted in terms of this.

According to some embodiments of the present disclosure, step 403 may further include：Will be current Channel sense threshold value is adjusted towards preferred channels sensed threshold.As shown in Figure 3, In normal circumstances, no matter channel sense threshold value is in Fig. 3 with the relation curve of handling capacity Any situation, the current channel sense threshold value preferred channels towards determined by are intercepted into threshold Value is adjusted can make optimized throughput.That is, optimization communication performance is common In the case of be actually equivalent to and make the value of channel sense threshold value be closer to preferred channels to detect Listen threshold value.

According to some embodiments of the present disclosure, if it is determined that preferred channels sensed threshold is taken for predetermined It is worth the interval upper limit, then step 403 may further include：Increase current with the first step-length Channel sense threshold value.Such case can correspond to the situation 3 for going out as shown by the dotted line in fig. 3. As shown in Figure 3, in situation 3, increase current channel in predetermined interval Sensed threshold increases just can handling capacity.

According to some embodiments of the present disclosure, if it is determined that preferred channels sensed threshold is taken for predetermined It is worth interval lower limit, then step 403 may further include：Reduced with the first step-length current Channel sense threshold value.Such case can correspond to the situation 2 for going out as shown by the dotted line in fig. 3. As shown in Figure 3, in situation 2, reduce current channel in predetermined interval Sensed threshold increases just can handling capacity.

According to some embodiments of the present disclosure, if it is determined that preferred channels sensed threshold is located at predetermined Between the upper limit and lower limit of interval, then step 403 may further include：If current Channel sense threshold value be less than preferred channels sensed threshold, then current letter is increased with the first step-length Road sensed threshold, if current channel sense threshold value is more than preferred channels sensed threshold, with First step-length reduces current channel sense threshold value.Such case is can correspond to as in Fig. 3 It is shown in solid go out situation 1.As shown in Figure 3, in situation 1, if current Channel sense threshold value is less than preferred channels sensed threshold, then should increase current channel sense threshold Value is so as to close to preferred channels sensed threshold；If current channel sense threshold value is more than optimum Channel sense threshold value, then should reduce current channel sense threshold value so as to close to preferred channels Sensed threshold.According to some embodiments of the present disclosure, it is possible to use binary search (binary Search) determining preferred channels sensed threshold, in order to by itself and current channel sense threshold Value is compared.It will be understood to those skilled in the art that binary search is only for determining A kind of illustrative methods in the numerical analysis method of preferred channels sensed threshold, it is known that other Appropriate numerical analysis method can also be used to determine preferred channels sensed threshold, the disclosure Embodiment is unrestricted in terms of this.

According to some embodiments of the present disclosure, method 400 may further include：Work as communicativeness When can be not less than predeterminated level, stop the current channel sense threshold value of adjustment.The technology of this area Personnel are appreciated that after once being adjusted to channel sense threshold value, perform method 400 Base station can determine communication performance after adjustment whether less than predeterminated level.If communicativeness Predeterminated level can be no longer below, then the base station for performing method 400 can stop to channel sense threshold The adjustment of value.If communication performance still is below predeterminated level, the base station of method 400 is performed Again channel sense threshold value can be adjusted according to the flow process of method 400, until communicativeness Predeterminated level can be no longer below.

Embodiment of the disclosure is also to be recognized that in single base station to channel sense adjusting thresholds is It is very limited, this is mainly due to the unconscious interference from neighbouring base station or other nodes / transmitting.If reducing the channel sense threshold value of base station to reduce concealed nodes, while also reducing The quantity of launching opportunity, handling capacity are seriously lowered because of this reduction.If Increase channel sense threshold value for exposed node, then also increase the launching opportunity disturbed Quantity, cannot guarantee that handling capacity increase.

Therefore, the channel sense adjusting thresholds between base station are necessary.In order to solve channel sense Threshold value inappropriate problem, embodiment of the disclosure additionally provide it is a kind of via X2 interface from Method of adjustment is adapted to, and defines corresponding mechanism.

When there is the communication performance problem relevant with channel sense threshold value, base station will attempt to pass through The channel sense threshold value of adjustment its own is solving this problem.Channel is adjusted in single base station The effect of sensed threshold be it is limited, except solve the problems, such as it is original in addition to, meaning may be caused Problem outside material, for example, reduce handling capacity while concealed nodes are reduced.

If base station can not be solved and channel sense by the channel sense threshold value for adjusting its own The relevant problem of threshold value, then base station adjacent interference base station will be asked to adjust the threshold of its () Value.Adjacent interference base station is by it is determined whether adjusting the threshold value of its own and correspondingly replying The request.Additionally, the adjustment of channel sense threshold value can be semi-static.The enforcement of the disclosure Example also defines the signaling for the channel sense adjusting thresholds between base station.It is also noted that as master When the interference base station wanted belongs to identical operator with interfered base station, then can detect main Interference base station mark.Based on this, the request for adjusting channel sense threshold value can be only sent to This adjacent base station.In addition, the adjustment for adjusting channel sense threshold value can also be UE Auxiliary.

According to some embodiments of the present disclosure, the aforementioned step in method as described above 400 In rapid, preferred channels sensed threshold is had been adjusted in current channel sense threshold value, and led to When letter performance still is below predeterminated level, the base station for performing method 400 can be sent out to adjacent base station Request message is sent, to ask adjacent base station to be adjusted its channel sense threshold value.According to this Disclosed some embodiments, after adjacent base station have adjusted its channel sense threshold value, the side of execution The base station of method 400 can receive notification message from adjacent base station, to notify adjacent base station Adjust its channel sense threshold value.According to some embodiments of the present disclosure, the base of method 400 is performed Stand and communication performance can be determined whether less than predeterminated level in response to receiving notification message.Such as Fruit communication performance is less than predeterminated level, then the base station for performing method 400 can again to adjacent base Transmission request message of standing and repetition abovementioned steps；If communication performance is not less than predeterminated level, The base station for then performing method 400 can stop sending request message to adjacent base station.

According to some embodiments of the present disclosure, the base station of execution method 400 can be believed using X2 Make being communicated with adjacent base station.According to some embodiments of the present disclosure, method 400 is performed Base station can semi-statically perform method 400.According to some embodiments of the present disclosure, perform The base station of method 400 can perform method 400 under the auxiliary of user equipment.In terms of this, Base station for example can obtain some from user equipment to be had for carrying out channel sense adjusting thresholds Information, such as signal strength signal intensity of edge customer equipment, service quality, etc..

Fig. 5 schematically shows adjustment channel sense threshold value in accordance with an embodiment of the present disclosure Other method 500.Method 500 can be performed by the base station in cordless communication network, especially Ground, the base station 800 that method 500 can be described later referring to Fig. 8 by this paper is performing.

As shown in Figure 5, method 500 can enter step 501 after start-up. In step 501, the base station for performing method 500 can receive request message from adjacent base station, should Request message is to ask to be adjusted channel sense threshold value.Especially, perform method 500 The adjacent base station of base station can be carried out the base station of method 400 as depicted in figure 4.Ring Should can start the channel current to which and detect in this request message, the base station of execution method 500 Threshold value is listened to be adjusted.

Then, method 500 may be advanced to step 502.In step 502, perform method 500 base station can be in response to request message, it is determined that so that relevant with channel sense threshold value is logical The preferred channels sensed threshold of letter best performance.

It will be understood to those skilled in the art that the communication performance in step 502 can be for example Handling capacity or communicate with handling capacity in short-term and relevant parameter, or can reflect in short-term Other suitable parameters of performance.In terms of this, those skilled in the art can be according to tool The application scenarios and technological accumulation and inheritance of body come be selected to characterize communication performance design parameter, this public affairs The embodiment opened is unrestricted in terms of this.It will also be understood by those skilled in the art that In step 502, " relevant with channel sense threshold value " means that the communication performance is detectd with channel Listen what threshold value was associated.In other words, by adjusting channel sense threshold value, correspondingly can adjust The whole communication performance.Especially, the communication performance can with channel sense threshold value exist similar to Relation as depicted in figure 3.

According to some embodiments of the present disclosure, step 502 may further include：Detect in channel Listen in the predetermined interval of threshold value, it is determined that so that the optimum preferred channels of communication performance intercept threshold Value.It will be understood to those skilled in the art that for the value of channel sense threshold value, base station can With with a predetermined interval.In this case, determine preferred channels sensed threshold The step of can be reduced in the predetermined interval determine preferred channels sensed threshold.

Then, method 500 may be advanced to step 503.In step 503, perform method 500 base station can adjust current channel sense threshold value based on preferred channels sensed threshold, Communication performance is kept to be not less than predeterminated level simultaneously.

It will be understood to those skilled in the art that once it is determined that preferred channels sensed thresholds, hold The base station of row method 500 just can according to determined by preferred channels sensed threshold come to current Channel sense threshold value is adjusted, in order to reduce the optimization level of current channel sense threshold value Not, such that it is able to reduce to send request message base station interference.However, it should be noted that The base station of execution method 500 should be in the feelings for keeping the communication performance of oneself to be not less than predeterminated level The interference of oneself base station to transmission request is reduced under condition.Those skilled in the art can manage Solution, the predeterminated level in step 503 can be pre- according to related technology scene and technical requirements First determine.It will also be understood by those skilled in the art that there may be a variety of concrete tune Perfect square formula is adjusting channel sense threshold value.It is, for example possible to use adjustment side described later herein Formula is adjusted, it is also possible to be adjusted using other adjustment modes as known in the art, this Disclosure is unrestricted in terms of this.

According to some embodiments of the present disclosure, step 503 may further include：Will be current Channel sense threshold value is adjusted away from preferred channels sensed threshold.As shown in Figure 3, In normal circumstances, no matter channel sense threshold value is in Fig. 3 with the relation curve of handling capacity Any situation, current channel sense threshold value preferred channels away from determined by are intercepted into threshold Value is adjusted can make handling capacity reduce optimization rank.That is, reducing communication performance Optimization rank be actually equivalent in normal circumstances and make the value of channel sense threshold value more Plus it is away from preferred channels sensed threshold.

According to some embodiments of the present disclosure, if it is determined that preferred channels sensed threshold is taken for predetermined It is worth the interval upper limit, then step 503 may further include：Reduced with the second step-length current Channel sense threshold value.Such case can correspond to the situation 3 for going out as shown by the dotted line in fig. 3. As shown in Figure 3, in situation 3, reduce current channel in predetermined interval Sensed threshold reduces just can handling capacity.

According to some embodiments of the present disclosure, if it is determined that preferred channels sensed threshold is taken for predetermined It is worth interval lower limit, then step 503 may further include：Reduced with the second step-length current Channel sense threshold value.Such case can correspond to the situation 2 for going out as shown by the dotted line in fig. 3. As shown in Figure 3, in situation 2, increase current channel in predetermined interval Sensed threshold reduces just can handling capacity.

According to some embodiments of the present disclosure, if it is determined that preferred channels sensed threshold is located at predetermined Between the upper limit and lower limit of interval, then step 503 may further include：If current Channel sense threshold value be less than preferred channels sensed threshold, then current letter is reduced with the second step-length Road sensed threshold, if current channel sense threshold value is more than preferred channels sensed threshold, with Second step-length increases current channel sense threshold value.Such case is can correspond to as in Fig. 3 It is shown in solid go out situation 1.As shown in Figure 3, in situation 1, if current Channel sense threshold value is less than preferred channels sensed threshold, then should reduce current channel sense threshold Value is to be away from preferred channels sensed threshold；If current channel sense threshold value is more than optimum Channel sense threshold value, then should increase current channel sense threshold value to be away from preferred channels Sensed threshold.According to some embodiments of the present disclosure, it is possible to use binary search (binary Search) determining preferred channels sensed threshold, in order to by itself and current channel sense threshold Value is compared.It will be understood to those skilled in the art that binary search is only for determining A kind of illustrative methods in the numerical analysis method of preferred channels sensed threshold, it is known that other Appropriate numerical analysis method can also be used to determine preferred channels sensed threshold, the disclosure Embodiment is unrestricted in terms of this.

Then, method 500 may be advanced to step 504.In step 504, perform method 500 base station can send a notification message to adjacent base station, to notify channel to adjacent base station Sensed threshold has been adjusted.According to some embodiments of the present disclosure, the base of method 500 is performed Stand and can be communicated with adjacent base station using X2 signalings.After step 504 is completed, side Method 500 can terminate.

Fig. 6 schematically show in accordance with an embodiment of the present disclosure for adjusting between the base stations The method 600 of channel sense threshold value.It will be appreciated that though Fig. 6 is depicted with particular step Flow chart is illustrating the concrete grammar 600 of the specific embodiment of the disclosure, but these specific steps Suddenly it is only used for the purpose explained, it is not intended to limit the scope of the present disclosure by any way.

It will be understood to those skilled in the art that there is multiple performance tolerance can be chosen for using In estimating for the communication performance relevant with channel sense threshold value.In method 600, exemplarily Handling capacity TP is in short-term used_tempTo characterize communication performance.According to some embodiments of the present disclosure, Each base station should make its TP_tempMore than predefined value TP, in order to guarantee its communicativeness Energy.Without loss of generality, η is made respectively₁To initiate the letter of the base station of channel sense threshold adjustment Road sensed threshold, η_1pFor its preferred channels sensed threshold, η₂For interference base station adjacent thereto Channel sense threshold value, η_2pFor its preferred channels sensed threshold.

First, a base station in cordless communication network can obtain handling capacity TP in short-term_temp's Statistics.In step 601, work as TP_tempDuring less than predefined value TP, the base station can To initiate the adjustment to channel sense threshold value.Otherwise, work as TP_tempNot less than predefined value TP When, the flow process of method 600 can stop.

In step 602, the base station can be according between its handling capacity and channel sense threshold value Which kind of situation of the relation in three kinds of situations as depicted in figure 3 is adjusting its channel sense Threshold value.Specific determination methods may be referred to description above, and herein this is repeated no more.

If situation 1, then work as η₁<η_1pWhen, η is increased with step-length S1₁, otherwise with step-length S1 reduces η₁.If situation 2, then η is reduced with step-length S1₁.If situation 3, then η is increased with step-length S1₁.As mentioned above, wherein η_1pValue can pass through binary chop Method is determining.

If execution step 602 several times after, in situation 1, η₁=η_1pWhen, Huo Zhe In situation 2, work as η₁It is reduced to η_minWhen, or in situation 3, work as η₁It is increased to η_max When, TP_tempStill less than TP, then the base station can determine to believe via X2 in step 603 Make asking adjacent interference base station to carry out channel sense adjusting thresholds.Otherwise, the base station can be with Stop the adjustment to channel sense threshold value, the flow process of method 600 can stop.

In step 604, when adjacent interference base station receives asking for adjustment channel sense threshold value When asking, adjacent interference base station can similarly according between its handling capacity and channel sense threshold value Which kind of situation of the relation in three kinds of situations as depicted in figure 3 detect adjusting its channel Listen threshold value.

If situation 1, then work as η₂>η_2pWhen, η is increased with step-length S2₂, otherwise with step-length S2 reduces η₂.If situation 2, then η is increased with step-length S2₂.If situation 3, then η is reduced with step-length S2₁.Note, the adjacent interference base station is being carried out to channel sense threshold value During adjustment, its handling capacity TP should be kept simultaneously_temp>TP。

In step 605, adjacent interference base station can come to transmission request via X2 signalings Reply the base station of message：Channel sense threshold value has been adjusted.

In step 606, if initiating the TP of the base station of adjustment_tempMore than TP, then can stop The only adjustment of channel sense threshold value.Otherwise, the base station is asked adjacent interference base station to be adjusted again Whole channel sense threshold value.

According to some embodiments of the present disclosure, adjacent interference base station can using with send request The base station identical channel sense threshold adjustment of message.They can towards maximize they Handling capacity common objective advance.It will be understood to those skilled in the art that adjacent interference Base station can be asked to adjusting channel sense threshold value using the various known ways in this area Ask and reacted, embodiment of the disclosure is unrestricted in terms of this.

According to some embodiments of the present disclosure, the adjustment of channel sense threshold value can be semi-static 's.In terms of this, base station can be in the much bigger time compared with channel sense adjusting thresholds The identification to aforementioned three kinds of situations is performed on yardstick.

Fig. 7 schematically shows the block diagram of base station 700 in accordance with an embodiment of the present disclosure. In some embodiments of the present disclosure, base station 700 can be configured to perform above with reference to Fig. 4 institutes The method 400 of description.As shown in Figure 7, base station 700 can determine single including first First 701, second determining unit 702, and adjustment unit 703.

According to some embodiments of the present disclosure, the first determining unit 701 can be configured to determine that The communication performance relevant with channel sense threshold value is less than predeterminated level.Second determining unit 702 can To be configured to determine that the preferred channels sensed threshold for causing communication performance optimum.Adjustment unit 703 can be configured to based on preferred channels sensed threshold adjust current channel sense threshold Value.

According to some embodiments of the present disclosure, the second determining unit 702 can be further configured It is in the predetermined interval of channel sense threshold value, it is determined that so that the optimum optimum of communication performance Channel sense threshold value.

According to some embodiments of the present disclosure, adjustment unit 703 can be configured to by Current channel sense threshold value is adjusted towards preferred channels sensed threshold.

According to some embodiments of the present disclosure, the second determining unit 702 can be further configured For, if communication performance at the upper limit of predetermined interval better than at lower limit and in the upper limit Place is better than at the left neighborhood of the upper limit, it is determined that preferred channels sensed threshold is predetermined interval The upper limit.In these embodiments, adjustment unit 703 can be configured to first Step-length increases current channel sense threshold value.

According to some embodiments of the present disclosure, the second determining unit 702 can be further configured For, if communication performance at the upper limit of predetermined interval better than at lower limit and in the upper limit Left neighborhood at better than at the upper limit, it is determined that preferred channels sensed threshold be located at predetermined value area Between the upper limit and lower limit between.In these embodiments, adjustment unit 703 can further by It is configured to, if current channel sense threshold value is less than preferred channels sensed threshold, with first Step-length increases current channel sense threshold value, if current channel sense threshold value is more than optimum letter Road sensed threshold, then reduce current channel sense threshold value with the first step-length.According to the disclosure Some embodiments, it is possible to use binary search is determining preferred channels sensed threshold.This area Technical staff be appreciated that binary search is only for determining preferred channels sensed thresholds A kind of illustrative methods in numerical analysis method, it is known that other appropriate numerical analysis methods Can also be used to determine preferred channels sensed threshold, embodiment of the disclosure in terms of this not It is restricted.

According to some embodiments of the present disclosure, the second determining unit 702 can be further configured For, if communication performance at the lower limit of predetermined interval better than at the upper limit and in lower limit Place is better than at the right neighborhood of lower limit, it is determined that preferred channels sensed threshold is predetermined interval Lower limit.In these embodiments, adjustment unit 703 can be configured to first Step-length reduces current channel sense threshold value.

According to some embodiments of the present disclosure, the second determining unit 702 can be further configured For, if communication performance at the lower limit of predetermined interval better than at the upper limit and in lower limit Right neighborhood at better than at lower limit, it is determined that preferred channels sensed threshold be located at predetermined value area Between the upper limit and lower limit between.In these embodiments, adjustment unit 703 can further by It is configured to, if current channel sense threshold value is less than preferred channels sensed threshold, with first Step-length increases current channel sense threshold value, if current channel sense threshold value is more than optimum letter Road sensed threshold, then reduce current channel sense threshold value with the first step-length.According to the disclosure Some embodiments, it is possible to use binary search is determining preferred channels sensed threshold.

According to some embodiments of the present disclosure, adjustment unit 703 can be configured to, When communication performance is not less than predeterminated level, stop the current channel sense threshold value of adjustment.

According to some embodiments of the present disclosure, base station 700 may further include transmitting element 704.Transmitting element 704 can be configured to send request message to adjacent base station, to ask Adjacent base station is asked to be adjusted its channel sense threshold value.

According to some embodiments of the present disclosure, base station 700 may further include receiving unit 705.Receiving unit 705 can be configured to receive notification message from adjacent base station, to logical Know adjusted its channel sense threshold value of adjacent base station.

According to some embodiments of the present disclosure, the first determining unit 701 can be further configured In response to receiving notification message, to determine communication performance whether less than the predeterminated level.

According to some embodiments of the present disclosure, transmitting element 704 can be configured to, If communication performance is less than the predeterminated level, the request is sent to adjacent base station again and disappeared Breath；If communication performance is not less than predeterminated level, stop sending request message to adjacent base station.

According to some embodiments of the present disclosure, base station 700 can using X2 signalings come with it is adjacent Base station is communicated.

Fig. 8 schematically shows the frame of another base station 800 in accordance with an embodiment of the present disclosure Figure.In some embodiments of the present disclosure, base station 800 can be configured to perform above with reference to Method 500 described by Fig. 5.As shown in Figure 8, base station 800 can include receiving Unit 801, determining unit 802, adjustment unit 803, and transmitting element 804.

According to some embodiments of the present disclosure, receiving unit 801 can be configured to from adjacent base Stand and receive request message, the request message is to ask to be adjusted channel sense threshold value.Really Order unit 802 can be configured to respond to request message, it is determined that so that with channel sense threshold value The optimum preferred channels sensed threshold of relevant communication performance.Adjustment unit 803 can be configured It is adjusting current channel sense threshold value, while keeping communication based on preferred channels sensed threshold Performance is not less than predeterminated level.Transmitting element 804 can be configured to send logical to adjacent base station Know message, to notify that channel sense threshold value has been adjusted to adjacent base station.

According to some embodiments of the present disclosure, determining unit 802 can be configured to, In the predetermined interval of channel sense threshold value, it is determined that so that the optimum optimum letter of communication performance Road sensed threshold.

According to some embodiments of the present disclosure, adjustment unit 803 can be configured to by Current channel sense threshold value is adjusted away from preferred channels sensed threshold.

According to some embodiments of the present disclosure, determining unit 802 can be configured to, If communication performance is at the upper limit of predetermined interval better than at lower limit and at the upper limit Better than at the left neighborhood of the upper limit, it is determined that preferred channels sensed threshold is predetermined interval The upper limit.In these embodiments, adjustment unit 803 can be configured to second step It is long to reduce current channel sense threshold value.

According to some embodiments of the present disclosure, determining unit 802 can be configured to, If communication performance is at the upper limit of predetermined interval better than at lower limit and in the upper limit Better than at the upper limit at left neighborhood, it is determined that preferred channels sensed threshold is located at predetermined interval The upper limit and lower limit between.In these embodiments, adjustment unit 803 further can be matched somebody with somebody It is set to, if current channel sense threshold value is less than preferred channels sensed threshold, with second step It is long to reduce current channel sense threshold value, if current channel sense threshold value is more than preferred channels Sensed threshold, then increase current channel sense threshold value with the second step-length.According to the one of the disclosure A little embodiments, it is possible to use binary search is determining preferred channels sensed threshold.This area Technical staff is appreciated that binary search is only for determining the number of preferred channels sensed threshold Value analysis method in a kind of illustrative methods, it is known that other appropriate numerical analysis methods Preferred channels sensed threshold can be used to determine, embodiment of the disclosure is not received in terms of this Limit.

According to some embodiments of the present disclosure, determining unit 802 can be configured to, If communication performance is at the lower limit of predetermined interval better than at the upper limit and at lower limit Better than at the right neighborhood of lower limit, it is determined that preferred channels sensed threshold is predetermined interval Lower limit.In these embodiments, adjustment unit 803 can be configured to second step The current channel sense threshold value of long increase.

According to some embodiments of the present disclosure, determining unit 802 can be configured to, If communication performance is at the lower limit of predetermined interval better than at the upper limit and in lower limit Better than at lower limit at right neighborhood, it is determined that preferred channels sensed threshold is located at predetermined interval The upper limit and lower limit between.In these embodiments, adjustment unit 803 further can be matched somebody with somebody It is set to, if current channel sense threshold value is less than preferred channels sensed threshold, with second step It is long to reduce current channel sense threshold value, if current channel sense threshold value is more than preferred channels Sensed threshold, then increase current channel sense threshold value with the second step-length.According to the one of the disclosure A little embodiments, it is possible to use binary search is determining preferred channels sensed threshold.

According to some embodiments of the present disclosure, base station 800 can using X2 signalings come with it is adjacent Base station is communicated.

In the description of embodiment of this disclosure, term " including " and its similar term should It is interpreted as opening to include, i.e. " including but not limited to ".Term "based" should be understood to " being based at least partially on ".Term " one embodiment " or " embodiment " should be understood For " at least one embodiment ".

It should be noted that embodiment of the disclosure can pass through hardware, software or software and hardware Be implemented in combination in.Hardware components can be realized using special logic；Software section can be deposited Store up in memory, by appropriate instruction execution system, such as microprocessor or special designs Hardware is performing.It will be appreciated by those skilled in the art that above-mentioned apparatus and method can be used Computer executable instructions and/or in being included in processor control routine realizing, can for example compile Provide so in the data medium of the memory of journey or such as optics or electrical signal carrier Code.

Although additionally, describe the operation of method of disclosure in the accompanying drawings with particular order, This does not require that or implies and these operations must be performed according to the particular order, or necessary Perform the operation shown in whole and could realize desired result.Conversely, the step described in flow chart Suddenly execution sequence can be changed.Additionally or alternatively, it is convenient to omit some steps, will be multiple Step is combined as a step and performs, and/or a step is decomposed into execution of multiple steps.Also It should be noted that can be filled at one according to the feature and function of two or more devices of the disclosure Put middle materialization.Conversely, the feature and function of an above-described device further can be drawn It is divided into by multiple devices embodying.

Although describing the disclosure by reference to some specific embodiments, but it is to be understood that this It is open to be not limited to disclosed specific embodiment.The disclosure is intended to the essence of claims Included various modifications and equivalent arrangements in god and scope.

Claims

1. it is a kind of adjustment channel sense threshold value method, including：

It is determined that the communication performance relevant with channel sense threshold value is less than predeterminated level；

It is determined that so that the optimum preferred channels sensed threshold of the communication performance；And

Current channel sense threshold value is adjusted based on the preferred channels sensed threshold.

2. method according to claim 1, causes the communication performance most wherein determining Excellent preferred channels sensed threshold includes：

In the predetermined interval of the channel sense threshold value, it is determined that so that the communication performance Optimum preferred channels sensed threshold.

3. method according to claim 1, wherein intercepting threshold based on the preferred channels Value includes adjusting current channel sense threshold value：

Current channel sense threshold value is adjusted towards the preferred channels sensed threshold.

4. method according to claim 2, wherein in the pre- of the channel sense threshold value Determine in interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

If the communication performance at the upper limit of the predetermined interval better than at lower limit, And better than at the left neighborhood of the upper limit at the upper limit, it is determined that the preferred channels Sensed threshold is the upper limit of the predetermined interval.

5. method according to claim 2, wherein in the pre- of the channel sense threshold value Determine in interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

If the communication performance at the upper limit of the predetermined interval better than at lower limit, And better than at the upper limit at the left neighborhood of the upper limit, it is determined that the preferred channels Sensed threshold is located between the upper limit and lower limit of the predetermined interval.

6. method according to claim 2, wherein in the pre- of the channel sense threshold value Determine in interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

If the communication performance at the lower limit of the predetermined interval better than at the upper limit, And better than at the right neighborhood of the lower limit at the lower limit, it is determined that the preferred channels Sensed threshold is the lower limit of the predetermined interval.

7. method according to claim 2, wherein in the pre- of the channel sense threshold value Determine in interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

If the communication performance at the lower limit of the predetermined interval better than at the upper limit, And better than at the lower limit at the right neighborhood of the lower limit, it is determined that the preferred channels Sensed threshold is located between the upper limit and lower limit of the predetermined interval.

8. method according to claim 4, wherein intercepting threshold based on the preferred channels Value includes adjusting current channel sense threshold value：

The current channel sense threshold value is increased with the first step-length.

9. method according to claim 6, wherein intercepting threshold based on the preferred channels Value includes adjusting current channel sense threshold value：

The current channel sense threshold value is reduced with the first step-length.

10. the method according to claim 5 or 7, wherein being detectd based on the preferred channels Listening threshold value includes adjusting current channel sense threshold value：

If the current channel sense threshold value is less than the preferred channels sensed threshold, with First step-length increases the current channel sense threshold value；And if the current channel is detectd Listen threshold value more than the preferred channels sensed threshold, then the current letter is reduced with the first step-length Road sensed threshold.

11. methods according to claim 10, wherein being determined using binary search The preferred channels sensed threshold.

12. methods according to claim 1, further include：

When the communication performance is not less than the predeterminated level, stop the adjustment current letter Road sensed threshold.

13. methods according to claim 1, wherein in the current channel sense threshold Value has been adjusted to the preferred channels sensed threshold, and the communication performance still is below institute When stating predeterminated level, methods described is further included：

Request message is sent to adjacent base station, the adjacent base station is asked to its channel sense Threshold value is adjusted；

Notification message is received from the adjacent base station, to notify the adjacent base station adjusted Its channel sense threshold value；

In response to receiving the notification message, determine the communication performance whether less than described pre- Determine level；And

If the communication performance is less than the predeterminated level, send out to the adjacent base station again The request message is sent, and repeats abovementioned steps；And if the communication performance is not less than The predeterminated level, then stop sending the request message to the adjacent base station.

14. methods according to claim 13, wherein using X2 signalings come with the phase Adjacent base station is communicated.

15. methods according to claim 1, wherein the communication performance includes leading in short-term Letter handling capacity.

16. methods according to claim 1, wherein semi-statically performing methods described.

17. methods according to claim 1, wherein performing under the auxiliary of user equipment Methods described.

A kind of 18. methods of adjustment channel sense threshold value, including：

Request message is received from adjacent base station, the request message is to ask to channel sense threshold Value is adjusted；

In response to the request message, it is determined that so that the communication performance relevant with channel sense threshold value Optimum preferred channels sensed threshold；

Current channel sense threshold value is adjusted based on the preferred channels sensed threshold, while protecting Hold the communication performance and be not less than predeterminated level；And

Send a notification message to the adjacent base station, to notify that channel is detectd to the adjacent base station Threshold value is listened to be adjusted.

19. methods according to claim 18, cause the communication performance wherein determining Optimum preferred channels sensed threshold includes：

20. methods according to claim 1, wherein intercepting threshold based on the preferred channels Value includes adjusting current channel sense threshold value：

The current channel sense threshold value is adjusted away from the preferred channels sensed threshold It is whole.

21. methods according to claim 19, wherein in the channel sense threshold value In predetermined interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

22. methods according to claim 19, wherein in the channel sense threshold value In predetermined interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

23. methods according to claim 19, wherein in the channel sense threshold value In predetermined interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

24. methods according to claim 19, wherein in the channel sense threshold value In predetermined interval, it is determined that so that the optimum preferred channels sensed threshold bag of the communication performance Include：

25. methods according to claim 21, wherein being intercepted based on the preferred channels Threshold value includes adjusting current channel sense threshold value：

The current channel sense threshold value is reduced with the second step-length.

26. methods according to claim 23, wherein being intercepted based on the preferred channels Threshold value includes adjusting current channel sense threshold value：

The current channel sense threshold value is increased with the second step-length.

27. methods according to claim 22 or 24, wherein based on the preferred channels Sensed threshold includes adjusting current channel sense threshold value：

If the current channel sense threshold value is less than the preferred channels sensed threshold, with Second step-length reduces the current channel sense threshold value；And if the current channel is detectd Listen threshold value more than the preferred channels sensed threshold, then the current letter is increased with the second step-length Road sensed threshold.

28. methods according to claim 27, wherein being determined using binary search The preferred channels sensed threshold.

29. methods according to claim 18, wherein using X2 signalings come with the phase Adjacent base station is communicated.

30. methods according to claim 18, wherein the communication performance is included in short-term Communication throughput.

A kind of 31. base stations, including：

First determining unit, is configured to determine that the communication performance relevant with channel sense threshold value is low In predeterminated level；

Second determining unit, is configured to determine that the preferred channels for causing the communication performance optimum Sensed threshold；And

Adjustment unit, is configured to based on the preferred channels sensed threshold adjust current letter Road sensed threshold.

A kind of 32. base stations, including：

Receiving unit, is configured to receive request message from adjacent base station, and the request message is used To ask to be adjusted channel sense threshold value；

Determining unit, is configured to respond to the request message, it is determined that so that and channel sense The optimum preferred channels sensed threshold of the relevant communication performance of threshold value；

Adjustment unit, is configured to based on the preferred channels sensed threshold adjust current letter Road sensed threshold, while keeping the communication performance to be not less than predeterminated level；And

Transmitting element, is configured to the adjacent base station send a notification message, to described Adjacent base station notifies that channel sense threshold value has been adjusted.