WO2010031355A1

WO2010031355A1 - Method, apparatus for obtaining quiet period parameters and system thereof

Info

Publication number: WO2010031355A1
Application number: PCT/CN2009/074043
Authority: WO
Inventors: 王海光; 冯淑兰; 刘劲楠
Original assignee: 华为技术有限公司
Priority date: 2008-09-19
Filing date: 2009-09-18
Publication date: 2010-03-25
Also published as: CN101677257A; CN101677257B

Abstract

A method, apparatus for obtaining quiet period parameters and system thereof, wherein the method includes: valid time length values of the quiet period parameters corresponding to current quiet period parameter values are adjusted according to the current quiet period parameter values and expected quiet period parameter values, the current quiet period parameter values are set to be the expected quiet period parameter values and the valid time length values of the quiet period parameters are set to be initial values when adjusted valid time length values of the quiet period parameters reach preset trigger values. With the application of the present invention, each base station can reduce the quiet period parameter values according to self requirement and quiet period synchronization parameters of base stations in the same network can be reduced finally.

Description

Method, device and system for obtaining silent period parameters

This application claims priority to Chinese Patent Application No. 200810198635. The invention is entitled "A Method, Apparatus and System for Obtaining Quiet Period Parameters" on September 19, 2008. The citations are incorporated herein by reference. Technical field

The present invention relates to the field of communications, and in particular, to a method, device and system for obtaining a silent period parameter.

Background technique

With the development of radio technology, cognitive radio technology has become more and more widely used, and spectrum detection is a cognitive radio technology that enables the use of existing allocated but often idle spectrum.

In order to improve the accuracy of spectrum detection, the IEEE (Institute of Electrical and Electronics Engineers) 802.22 standard requires each base station to schedule a quiet period (QP) to the spectrum being used during the test. To perform detection, in order to avoid interference between the base stations to make the spectrum detection result more effective, IEEE 802.22 requires each base station to synchronize the silent period by exchanging the silent period parameter.

Among them, the IEEE 802.22 standard adopts a structure of secondary detection for spectrum detection and defines two silent periods, namely, QP for intra-frame sensing and inter-frame detection silent period (QP for inter). -frame sensing). The QP for intra-frame sensing can be placed inside a normal frame, and the length is less than the length of one normal frame. QP for inter-frame sensing is longer than a normal frame and is usually used for fine detection.

When performing QP for intra-frame sensing synchronization, a base station (BS) mainly informs its subordinate devices (CPE) and neighboring BSs about the silent period scheduling information by using the following information: Detection period parameters (Intra) -frame Sensing Cycle Length): We use N to indicate the Intra-frame Sensing Cycle Length, that is, select a superframe every few superframes to arrange QP for intra-frame sensing for spectrum detection. The larger N is, the longer the sensing period is. Therefore, at the time of synchronization, each base station should select the minimum value of the neighboring cell.

It should be noted that the IEEE 802.22 standard designs a superframe structure for the Media Access Control (MAC) layer, specifically, the channel time of the MAC layer is divided into superframes (superframes) of equal length. Each superframe is 160ms long and consists of a superframe preamble + frame preamble, a superf rame control header (SCH) and 16 regular frames of length 10ms.

Intra-frame Sensing Cycle Offset: The position of the superframe selected for spectrum detection in one cycle. Its value is only the specified position, not a quantity. It is not very important in synchronization. Intra-frame Sensing Cycle Frame Bitmap: We use m to indicate the Intra-frame Sensing Cycle frame Bitmap. This value indicates the number of normal frames involved in detection in a superframe. There are 16 fields in this field. Bit, each bit represents a state in which a normal frame participates in detection. The larger m is, the more normal frames are detected to participate in the detection. Therefore, in synchronization, each base station should select the maximum value of the neighboring cell.

Intra-frame Sensing Duration: We use d to indicate the Intra-frame Sensing Duration, which represents the length of the detection period in a normal frame, in symbols. When synchronizing, the length of the detection period within one frame should be adjusted to the maximum value of the neighboring cell.

In the prior art, after the QP for Intra-frame Sensing in the IEEE 802.22 network is synchronized, the variables N, m, and d defined above are the minimum (N) or maximum values of the base stations in a certain area ( m, d). Suppose there are K base stations BS1, BS2, "BSK in a certain area, these base stations can be directly or indirectly interconnected. We define two sets of variables (Ni, mi, di) related to BSi, 1<= i <= K, And (Ni, , mi, , di, ), where (Ni, mi , di ) is the value when SCH is transmitted by BSi, and (Ni ' , mi ' , di ' ) is one of the minimum values that can satisfy the measurement demand. At initialization, we have (Ni, mi , di ) = (Ni, , mi, , di, ). After synchronization, we have:

N _syn =min (Ni, , i=l, 2,•••k);

m _s , _nj =max (mi, , i=l, 2,•••k);

d _syn =max (di ' , i=l, 2, "'k);

N _syn , m _syn , , d _syn respectively represent the magnitudes used by each base station in the QP for Intra-frame Sensing scheduling after synchronization. After synchronization, (Ni , mi , di ) = (N _syn , m _syn , , d _syn ), i=l, 2, ···, K. Parameters of QP for Intra-frame Sensing in the SCH message of each base station N _Syn , m _syn , , d _syn are directly or indirectly reflected. In general, we have, Ni < Ni ' , mi > mi ' , and di > di '.

The values of N _syn , m _syn , , d _syn may vary with the values of Ni, mi , di. In the prior art, when synchronizing with the quiet period parameter values (Ni, mi , di ) of the base station, each base station does not know exactly whether the parameters should be re-adjusted, which may cause unnecessary reselection, and if silent If there is a loss in the process of scheduling information transmission, it will also affect the global silent period adjustment, and the fault tolerance is poor. Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a method, a device, a base station, and a system for implementing synchronization period synchronization, which can implement adjustment of synchronization silent parameters between base stations.

In order to solve the above technical problem, an embodiment of the present invention provides a method for acquiring a silent period parameter, including: adjusting, according to a current silent period parameter value and an expected silent period parameter value, a value corresponding to the current silent period parameter value. Quiet The duration value of the silent period parameter;

When the adjusted duration value of the silent period parameter reaches a preset trigger value, the current silent period parameter value is set to the expected silent period parameter value, and the silent period parameter lifetime duration value is set to Initial value.

The embodiment of the invention further provides a method for obtaining a silent period parameter, including:

Receiving the silent period scheduling information sent by the other base station, where the silent period scheduling information includes the silent period parameter value of the other base station and the lifetime duration value of the silent period parameter;

And adjusting a quiet period parameter value and a silent period parameter lifetime duration value of the current base station according to the current base station quiet period parameter value and the silent period scheduling information of the other base station.

Correspondingly, an embodiment of the present invention provides an apparatus for acquiring a quiet period parameter, including:

a first adjusting unit, configured to adjust, according to the current silent period parameter value and the expected silent period parameter value, a silent period parameter survival duration value corresponding to the current silent period parameter value;

a setting unit, configured to set the current silent period parameter value to the expected silent period parameter value when the surviving period parameter survival time value reaches a preset trigger value, and set the silent period parameter survival time value Is the initial value.

An embodiment of the present invention further provides an apparatus for obtaining a silent period parameter, including:

a second receiving unit, configured to receive the quiet period scheduling information sent by the other base station, where the silent period scheduling information includes the quiet period parameter value of the other base station and the lifetime duration value of the silent period parameter;

And a third adjusting unit, configured to adjust a quiet period parameter value and a silent period parameter lifetime duration value of the current base station according to the current base station quiet period parameter value and the received silent period scheduling information of the other base station.

The embodiment of the invention further provides a system, including:

a first base station, configured to adjust, according to the current silent period parameter value and the expected silent period parameter value, a silent period parameter survival duration value corresponding to the current silent period parameter value; and the adjusted duration of the silent period parameter When the preset trigger value is reached, the current silent period parameter value is set to the expected silent period parameter value, and the silent period parameter survival time value is set to an initial value, and the current silent period parameter value is The quiet period parameter survival time value is sent as the silent period scheduling information;

The second base station is configured to receive the quiet period scheduling information sent by the first base station, and adjust the silent period parameter value and the silent period parameter lifetime duration value according to the silent period scheduling information of the first base station.

Embodiments of the present invention have the following beneficial effects:

Each base station can know whether the parameter value of the silent period should be adjusted by the change of the quiet duration of the quiet static parameter, thereby avoiding unnecessary reselection, and the base station can still be lost when the quiet static scheduling information between the base stations is lost during transmission. By comparing the current silent period parameter value with the expected silent period parameter value, the self-quiet period parameter value is adjusted, and the letter is reduced. The impact of loss of interest on the global network improves the fault tolerance and stability of the network. DRAWINGS

1 is a schematic flow chart of Embodiment 1 of a method for implementing silent period synchronization according to the present invention;

2 is a schematic diagram of a specific process of a method for implementing a silent period synchronization according to the present invention;

3 is a schematic flow chart of Embodiment 2 of a method for implementing silent period synchronization according to the present invention;

4 is a schematic diagram of a specific process of implementing the second embodiment of the silent period synchronization method according to the present invention;

Figure 5 is a schematic structural view of Embodiment 1 of the system of the present invention;

6 is a schematic structural diagram of a device 1 for implementing silent period synchronization in a first base station according to Embodiment 1 of the system of the present invention; FIG. 7 is a structure of a device 2 for implementing silent period synchronization in a second base station according to Embodiment 1 of the system of the present invention; Figure 8 is a schematic structural view of a second embodiment of the system of the present invention;

9 is a schematic structural view of a third embodiment of the system of the present invention. detailed description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more comprehensible, the invention will be further described in detail with reference to the accompanying drawings.

In the embodiment of the present invention, the quiet period parameter survival time value corresponding to the current silent period parameter is adjusted by using the result of comparing the current silent period parameter value and the expected silent period parameter value of the base station, and then determining whether the silent static parameter survival time value is determined according to the quiet static parameter survival time value. The current silent period parameter value is replaced with the expected silent period parameter value, thereby realizing the adjustment of the current silent period parameter value.

Referring to FIG. 1, a method for obtaining a silent period parameter in the first embodiment of the present invention includes the following steps:

100. Adjust, according to the current silent period parameter value and the expected silent period parameter value, a quiet period parameter survival time value corresponding to the current silent period parameter value.

The current silent period parameter value or the expected silent period parameter value is one or any combination of the detection period parameter value, the detection frame bitmap parameter value, and the detection duration parameter value; the silent period parameter survival duration value is the current silence The period parameter corresponds to one of the detection period parameter survival time value, the detection frame bitmap parameter survival duration value, and the detection duration parameter survival time value.

For example, the duration of the silent period parameter corresponding to the current detection period parameter value is the lifetime value of the detection period parameter. At the same time, the expected silent period parameter value is the value of the quiet period parameter that the base station determines according to its own needs and current network conditions.

Adjusting, according to the current silent period parameter value and the expected silent period parameter value, corresponding to the current silent period parameter value The steps of the silent period parameter survival time value include:

When the expected silent period parameter value is equal to the current silent period parameter value, setting a silent period parameter survival duration value corresponding to the current silent period parameter value to an initial value;

When the current silent period parameter value is better than the expected silent period parameter, the silent period parameter lifetime duration value corresponding to the current silent period parameter value is decremented.

The current silent period parameter value is superior to the expected silent period parameter as any one of the following conditions or any combination: The expected detection period parameter value is greater than the current detection period parameter value, and the expected detection frame bitmap parameter value is greater than the current detection frame position. Graph parameter value, the expected detection duration parameter value is greater than the current detection duration parameter value.

101. When the adjusted silent period parameter survival time reaches the preset trigger value, set the current silent period parameter value to the expected silent period parameter value, and set the silent period parameter survival time value to the initial value.

For example, the preset trigger value is set to zero. Generally, the initial value of the quiet period parameter survival time value ranges from 255, and the initial value of the quiet period parameter survival time value of each base station is consistent. At the same time, the initial value of the lifetime value of the quiet period parameter is usually larger than the diameter of the network where the base station is located. Otherwise, the synchronization will be invalid. Usually, the default is 1. 5 X network diameter <= the initial value of the lifetime value of the silent period parameter < =2 X network diameter.

The silent period parameter survival time value is preset to be equal to the initial value of the silent period parameter survival time value.

It should be noted that the current silent period parameter value of the current base station and the corresponding quiet period parameter survival time value are compared and adjusted in each unit time specified by the network, and the current silent period parameter value and corresponding corresponding after the adjustment are compared. The silent period parameter lifetime value is sent to other base stations in the same network as the silent period scheduling information of the current base station in the current unit time, and the silent period is synchronized.

Each base station can know whether the parameter value of the silent period should be adjusted by the change of the quiet duration of the quiet static parameter, thereby avoiding unnecessary reselection, and also reducing the loss of the silent static scheduling information in the transmission process between the base stations. The impact of the network improves the fault tolerance and stability of the network.

FIG. 2 is a schematic flowchart of a specific implementation method for obtaining a silent period parameter according to the present invention, including:

200. Acquire an expected quiet period parameter value of the current base station.

The expected silent period parameter value is the expected silence period parameter value determined by the base station according to its own needs and current network conditions.

We replace the corresponding parameters with the letters in Table 1, as shown in Table 1.

For example, assuming that the trigger value preset in the base station BS1 is equal to 0, the value of the lifetime value of the silent period parameter is one, and the other parameters are assigned as shown in the "value" item in Table 1.

Table 1 - Letter corresponding parameter value letter corresponding parameter value

N base station current detection 3 Ν' base station expected detection 4

Periodic parameter value

Value

M base station current detection 4 Μ' base station expected check 3

Frame bitmap parameter value

Numerical value

D base station current detection 5 D, base station expected check 5

Duration parameter value

Numerical value

TN current detection period 1 TM current detection frame 1

Parameter survival time bitmap parameter storage

Value time value

TD current detection time 1 Tmax initial value 5

Parameter survival time

Value

201, comparing the N value with the N, value, when, TN = Tmax. When N < N, TN = TN_1.

For example, if the value of N in the base station BS1 is less than 3', the TN in the base station BS1 is decremented by one, that is, T1 = TN_1 = 0 in BS1. 202. Determine whether the TN reaches a preset trigger value. When the determination is yes, Ν=Ν', and TN=Tmax. When the judgment is no, no adjustment is made.

For example, it is judged whether or not the TN in the BS1 reaches the trigger value. Therefore, the value of N in BS1 is adjusted to the value of N', and the value of TN corresponding to the value of N is set to the initial value Tmax, that is, in the base station BS1, Ν = Ν ' = 4, TN = Tmax = 5.

203, comparing the M value with the M, value, when 3⁄41=3⁄41, TM=Tmax. When M>M, TM=TM_1.

For example, if the value of M in the base station BS1 is greater than 3, the TM in the base station BS1 is decremented by one, that is, TM = TM_1 = 0 in BS1. 204. Determine whether the TM reaches the expected trigger value. When the determination is yes, Μ=Μ', and TM=Tmax. When the judgment is no, no adjustment is made.

For example, it is judged whether or not TM in the BS1 has reached the trigger value, and it is judged as YES. Therefore, the M value in BS1 is adjusted to the M' value, and the TM value corresponding to the M value is set to the initial value Tmax, that is, in the base station BS1, M = M, = 3, TM = Tmax = 5.

205, comparing D value and D, value, when D=D, TD=Tmax. When D>D, yes, TD=TD-1. For example, if the value of D in the base station BS1 is equal to 5, the TD in the base station BS1 is set to an initial value, that is, TD=Tmax=5 in BS1.

206: Determine whether the TD reaches the expected trigger value. When the judgment is yes, D=D', and TD=Tmax. When the judgment is no, no adjustment is made.

After the above adjustment, the current silent period parameter value of the base station BS1 is adjusted to (N=4, M=3, D=5), and the corresponding quiet period parameter survival time value is adjusted to (TN=5, TM=5). , TD=5), realizes the downward adjustment of the silent period parameter value (ie, increasing the N value, decreasing the M value and the D value).

It should be noted that there is no inevitable relationship between 201, 203, and 205, which can be performed at the same time or in a certain order.

207. The current base station receives the silent period scheduling information sent by other base stations.

The silent period scheduling information of the other base stations includes a silent period parameter value and a silent period parameter survival time value of other base stations.

We replace the corresponding parameters of other base stations with the letters in Table 2, as shown in Table 1.

For example, the base station BS1 receives the silent period scheduling information transmitted by the base station BS2. The silent period parameter assignment of the base station BS2 is as shown in the "Value" item in Table 2.

Table 2:

208: Compare N with n, and when N=n, determine whether TN is less than tn, and if it is YES, TN=tn. When N>n, N=n is executed, and TN=tn.

For example, N=4 in the base station BS1 is larger than n=3 in the base station BS2. Therefore, the value of N in the base station BS1 is adjusted to the value of n of the base station BS2, and the value of TN in the base station BS1 is adjusted to the value of tn of the base station BS2, that is, N=n=3, and TN=tn=3. 209, comparing M with m, and when M=m, determining whether TM is less than tm, and if it is YES, executing TM=tm. When M < m, M=m is performed, and TM=tm.

For example, M=3 in base station BS1 is smaller than m=5 in base station BS2. Therefore, the M value in the base station BS1 is adjusted to the m value of the base station BS2, and the TM value in the base station BS1 is adjusted to the tm value of the base station BS2, i.e., M = m = 5, and TM = tm = 3.

210, compare D with d, and when D=d, determine whether TD is less than td, and if it is YES, TD=td. When D < d, D=d is executed, and TD=td.

For example, D=5 in base station BS1 is smaller than d=6 in base station BS2. Therefore, the D value in the base station BS1 is adjusted to the d value of the base station BS2, and the TD value in the base station BS1 is adjusted to the td value of the base station BS2, that is, D = d = 6, and TD = td = 3.

Thereby, the silent period parameter of the base station BS1 is adjusted to (N=3, M=5, D=6) and (TN=3, TM=3, TD=3), and the silent period parameter value and the silent period are implemented with the base station BS2. Synchronization of parameter lifetime values.

It should be noted that there is no inevitable relationship between 208, 209, and 210, which can be performed at the same time or in a certain order.

For another example, it is assumed that there are K base stations BS1, BS2, BSK in a certain area, and these base stations can be directly or indirectly interconnected. Among them, the silent period parameter value of the base station BSi ( 1 <= i <= K) is (Ni, Mi , Ni ), then after synchronization, we have:

N _syn =min (Ni, , i=l, 2,•••k);

M _syn , =max (Mi, , i=l, 2,•••k);

D _syn =max (Di, , i=l, 2,•••k);

N _syn , M _syn , and D _syn respectively represent the magnitudes used by each base station in the silent period scheduling after synchronization. It is assumed that Di > Di ' in BSi, therefore, TNi = TNi -1. If each Di, (i=2, ···, !() is less than Di, then the value of TNi, (i=l, 2, ···, K) will gradually become 0, so all base stations will be re- Select the value of D so that the network can synchronize to a smaller D _syn value. Similarly, all base stations can synchronize to a larger N _syn value or a smaller M _syn value.

It can be seen that the first embodiment of the method of the present invention can implement the silent period synchronization of the base stations in the same area, which can not only adjust the silent period synchronization parameters between the base stations (ie, the N value decreases, and the M value and the D value increase). The silent period synchronization parameter between the base stations can also be accurately adjusted (ie, the value of N increases, and the value of M and D decreases). Each base station can know whether the parameter value of the silent period should be adjusted by the change of the quiet duration of the quiet static parameter, thereby avoiding unnecessary reselection, and when the silent static scheduling information between the base stations is lost during transmission, the base station can still By comparing the current silent period parameter value and the expected silent period parameter value to adjust the self-quiet period parameter value, the impact on the global network due to information loss is reduced, and the fault tolerance and stability of the network are improved.

FIG. 3 is a schematic flowchart of Embodiment 2 of a method for obtaining a silent period parameter according to an embodiment of the present invention, including:

300. Receive, by using another base station, a quiet period parameter value of the other base station and a lifetime duration value of the silent period parameter. Quiet period scheduling information.

301. Adjust a quiet period parameter value of the current base station and a lifetime duration value of the silent period parameter according to the current base station quiet period parameter value and the received silence period parameter values of other base stations.

It should be noted that the current silent period parameter value or other base station silent period parameter value is one or any combination of the detection period parameter value, the detection frame bitmap parameter value, the detection duration parameter value, the current silent period parameter survival value or other The base station quiet period parameter survival value is one or any combination of the corresponding detection period parameter survival duration value, the detection frame bitmap parameter survival duration value, and the detection duration parameter survival duration value.

It should be noted that when the current base station receives the silent period scheduling information sent by multiple other base stations in the same unit time, the current base station compares the current base station silent period parameter value with the received silent period parameter values of other base stations. Finally, the optimal silent period parameter value is selected as the silent period synchronization parameter value of the current base station current unit time.

FIG. 4 is a schematic flowchart of a second embodiment of a method for obtaining a silent period parameter according to an embodiment of the present invention, including:

400. The current base station receives quiet period scheduling information that is sent by other base stations and includes other base station silent period parameter values and silent period parameter lifetime duration values.

It should be noted that the specific process diagram of the second embodiment of the method is only a detailed description of the comparison of the parameter values in the silent period. When multiple silent period scheduling information is received in the same unit time, multiple comparison adjustments are performed and selected. The optimal quiet period parameter value is used as the silent period synchronization parameter value of the current base station current unit time, and the process of each comparison adjustment is substantially the same as the process shown in the specific flow diagram.

We replace the corresponding parameters of the current base station with the letters in Table 1, as shown in Table 1.

We replace the corresponding parameters of other base stations with the letters in Table 3, as shown in Table 3.

For example, the base station BS1 receives the silent period scheduling information transmitted by the base station BS2. The silent period parameter value and the quiet period parameter survival time value of the base station BS1 are as shown in the corresponding value of the value of Table 1, and the silent period parameter assignment of the base station BS2 is as shown in the "value" item in Table 3.

For example, the base station BS1 receives the silent period scheduling information sent by the base station BS2. For convenience of description, the parameter values of other base stations are replaced by the letters in Table 3.

table 3:

Letter corresponding parameter value letter corresponding parameter value

n Other base station detection 3 m Other base station check 5

Period parameter value

Numerical value

d Other base station detection 6 tn Other base station check 3 Duration parameter measurement period parameter

Time to live

Tm other base station detection 3 td other base station check 3

Frame bitmap parameter storage duration parameter

Long-lived value

401, comparing N with n, and when N=n, determining whether TN is smaller than tn, and when it is judged as YES, TN=tn. When N>n, N=n is executed, and TN=tn.

For example, N=4 in the base station BS1 is larger than n=3 in the base station BS2. Therefore, the value of N in the base station BS1 is adjusted to the value of n of the base station BS2, and the value of TN in the base station BS1 is adjusted to the value of tn of the base station BS2, that is, N = n = 3, and TN = tn = 3.

402, comparing M with m, and when M=m, determining whether TM is less than tm, and if it is YES, executing TM=tm. When M < m, M = m is performed, and TM = tm.

403, comparing D with d, and when D=d, determining whether TD is less than td, and when it is judged as YES, TD=td. When D < d, D=d is executed, and TD=td.

Thus, the silent period parameters of the base station BS1 are adjusted to (N = 3, M = 5, D = 6) and (TN = 3, TM = 3, TD = 3).

As can be seen from the above, the second embodiment of the method of the present invention can obtain a better quiet period parameter value and a silent period parameter survival time value between the base stations, and survive the obtained better silent period parameter value and the silent period parameter. The duration value is further compared with other base stations in the same network until the silent period parameter value and the silent period parameter lifetime value of all the base stations are synchronized. Among them, obtaining a better quiet period parameter survival time value can make the corresponding silent period parameter value more stable and effective, and the stability of the overall network is increased.

It should be noted that there is no inevitable relationship between 401, 402, and 403, and they may be executed at the same time or in a certain order.

FIG. 5 is a schematic structural diagram of Embodiment 1 of the system of the present invention, and Embodiment 1 of the system of the present invention includes:

The first base station 1 is configured to obtain the silent period scheduling information according to the current silent period parameter value and the expected silent period parameter value, and send the silent period scheduling information to the second base station 2;

The silent period scheduling information includes a silent period parameter value and a silent period parameter survival time value corresponding to the silent period parameter value; The second base station 2 is configured to receive the silent period scheduling information sent by the first base station 1, and perform adjustment of the self-silence period parameter according to the silent period scheduling information of the first base station 1.

The first base station 1 includes a device for acquiring a silent period parameter, and FIG. 6 is a schematic structural diagram of a device 1 for acquiring a silent period parameter, where the device includes:

The first adjusting unit 11 is configured to adjust a quiet period parameter lifetime duration value corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value.

The setting unit 12 sets the current silent period parameter value to the expected silent period parameter value when the adjusted silent period parameter survival time value reaches a preset trigger value, and the duration of the silent period parameter is long The value is set to the initial value.

For example, the first base station 1 transmits the compared current quiet period parameter value and the silent period parameter lifetime duration value to the second base station 2 as the silent period scheduling information of the first base station in the current unit time.

The first adjusting unit 11 specifically includes:

The first comparison unit 111 is configured to compare the current silent period parameter value with the expected silent period parameter value. The first processing unit 112 is configured to adjust the corresponding quiet period parameter survival duration value according to the comparison result of the first comparison unit. .

Specifically, when the expected silent period parameter value is equal to the current silent period parameter value, the silent period parameter survival duration value corresponding to the current silent period parameter value is set as an initial value;

When the current silent period parameter value is better than the expected silent period parameter, the silent period parameter lifetime duration value corresponding to the current silent period parameter value is decremented. In the specific implementation, the decrement value of the quiet duration parameter of the quiet static parameter is usually set to one.

It can be seen that the synchronization device in the first embodiment of the system of the present invention can implement the silent period synchronization of the base stations in the same area, which can not only adjust the silent period synchronization parameter between the base stations upwards (ie, the detection period parameter value decreases, and the detection frame is detected. The bitmap parameter value and the detection duration parameter value are increased, and the silent period synchronization parameter between the base stations can be accurately adjusted (that is, the detection period parameter value is increased, the detection frame bitmap parameter value and the detection duration parameter value are decreased). At the same time, when the static and static scheduling information between the base stations is in the transmission process When a loss occurs, the synchronization device in each base station can still adjust the quiet period parameter value of the base station by comparing the current quiet period parameter value and the expected silent period parameter value of the base station, thereby reducing the impact of the information loss on the global network. , improve the fault tolerance and stability of the network.

The second base station 2 in the first embodiment of the system of the present invention also includes a device for acquiring a silent period parameter, and FIG. 7 is a schematic structural diagram of the device 2 for acquiring a silent period parameter, where the device 2 includes:

The second receiving unit 21 is configured to receive the silent period scheduling information sent by the first base station 1, where the silent period scheduling information includes the other base station silent period parameter value and the silent period parameter survival duration value.

The third adjusting unit 22 is configured to adjust a quiet period parameter value and a silent period parameter lifetime duration value of the current base station according to the current base station silent period parameter value and the received silent period parameter value of the first base station 1.

It should be noted that, when the current base station receives the silent period scheduling information sent by multiple other base stations in the same unit time, the current base station performs one-to-one according to the current base station silent period parameter value and the received quiet period parameter value of the base station. In comparison, the optimal silent period parameter value is finally selected as the silent period synchronization parameter value of the current base station current unit time.

The third adjusting unit 22 specifically includes a second comparing unit 221, configured to compare the current silent period parameter value with an expected silent period parameter value of the other base station;

The third processing unit 222 is configured to adjust, according to the comparison result of the first comparing unit, the current base station quiet period parameter lifetime duration value.

Specifically, when the quiet period parameter value of the received other base station is better than the current base station quiet period parameter value, the current base station silent period parameter value is adjusted to the received silent period parameter value of the other base station, and the corresponding current base station silent period parameter is obtained. The lifetime value is adjusted to the quiet period parameter survival time value of other base stations.

The silent period parameter value of the received other base station is better than the current base station silent period parameter value, and is specifically any one of the following situations or any combination:

The detection period parameter value of the other base station is smaller than the detection period parameter value of the current base station; the detection bitmap parameter value of the other base station is greater than the detection frame bitmap parameter value of the current base station; and the detection time length parameter value of other base stations is greater than the current base station. The detection time parameter value.

It can be seen that, in the first embodiment of the system of the present invention, the synchronization device 2 can obtain a better quiet period parameter value and a quiet period parameter survival time value between the base stations, and obtain the better silent period parameter value and The quiet period parameter survival time value is further compared with other base stations in the same network until the silent period parameter value and the silent period parameter survival time value of all the base stations are synchronized. Among them, obtaining a better quiet period parameter survival time value can make the corresponding silent period parameter value more stable and effective, and improve the stability of the overall network.

It should be noted that the synchronization device 1 and the synchronization device 2 may be disposed in the same base station. Device 1 and device 2 are also available Make the same part and implement the corresponding functions of device one and device two.

FIG. 8 is a schematic structural diagram of Embodiment 2 of the system according to the present invention. The first base station 1 and the second base station 2 may respectively send silent period scheduling information to each other, and may also separately receive silent period scheduling information sent by the other party, and according to the other party. The silent period scheduling information sent is synchronized during the silent period.

9 is a schematic structural diagram of Embodiment 3 of a system according to the present invention, which includes multiple base stations, each of which can send silent period scheduling information to other base stations, and can also receive silent period scheduling information sent by other base stations, and receive according to The silent period scheduling information of other base stations implements silent period synchronization.

By implementing the present invention, each base station can lower the silent period parameter value according to its own requirement (that is, the N value increases, the D value and the M value decrease), and the synchronization between the base stations can be achieved by synchronizing between the base stations (ie, The synchronization N increases, and the synchronous D value and the synchronous M value decrease. At the same time, the silent period synchronization is efficient and stable, because each BS knows precisely whether to adjust the parameters again, thus avoiding unnecessary reselection, and if there is a loss during the silent period scheduling information transmission, It will not affect the global silent period adjustment, and effectively improve fault tolerance.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

A method for obtaining a silent period parameter, comprising:

Adjusting a quiet period parameter survival time value corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value;

The method according to claim 1, wherein the step of adjusting a silent period parameter survival time value corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value Includes:

3. The method of claim 2, wherein:

The silent period parameter value includes a detection period parameter value or a detection frame bitmap parameter value or a detection duration parameter value; the silent period parameter survival duration value includes a detection period parameter survival time value or detection corresponding to the silent period parameter value. Frame bitmap parameter survival time value or detection time parameter survival time value.

The method according to claim 3, wherein, when the current silent period parameter value is better than the expected silent period parameter, the silent period parameter survival time value corresponding to the current silent period parameter value is The step of performing the decrementing includes: when the silent period parameter value includes a detection period parameter value, where the expected detection period parameter value is greater than the current detection period parameter value, the detection period parameter survival time value is decremented; or

When the quiet period parameter value includes a detection frame bitmap parameter value, and the expected detection frame bitmap parameter value is smaller than the current detection frame bitmap parameter value, the detection frame bitmap parameter survival time value is decremented; or

When the silent period parameter value includes a detection duration parameter value, and the expected detection duration parameter value is smaller than the current detection duration parameter value, the detection duration parameter survival time value is decremented.

5. The method of any of claims 4, further comprising:

6. The method according to claim 5, wherein: according to a current base station silent period parameter value and the other The step of adjusting the silent period parameter value and the silent period parameter lifetime duration value of the current base station by the silent period scheduling information of the base station includes:

When the quiet period parameter value of the other base station is equal to the current base station quiet period parameter value, further determining whether the current base station silent period parameter survival duration value is smaller than the quiet period parameter survival time value of the other base station, and determining that If yes, the current base station quiet period parameter lifetime duration value is set to the quiet period parameter lifetime duration value of the other base station; when the quiet period parameter value of the other base station is better than the current base station silent period parameter value And setting the current base station quiet period parameter value to the received silent period parameter value of the other base station, and setting the corresponding current base station silent period parameter survival duration value to the silent period parameter survival time of the other base station. value.

7. A method for obtaining a silent period parameter, comprising:

8. The method of claim 7 wherein:

The method according to any one of the preceding claims, wherein the adjusting the silent period parameter value and the silent period of the current base station according to the current base station silent period parameter value and the quiet period scheduling information of the other base station The steps of the parameter survival time value include:

When the quiet period parameter value of the other base station is equal to the current base station quiet period parameter value, further determining whether the current base station silent period parameter survival duration value is smaller than the quiet period parameter survival time value of the other base station, and determining that If yes, the current base station quiet period parameter lifetime duration value is set to the quiet period parameter lifetime duration value of the other base station; when the silent period parameter value of the other base station is better than the current base station silent period parameter value And setting the current base station quiet period parameter value to the received silent period parameter value of the other base station, and setting the corresponding current base station silent period parameter survival duration value to the silent period parameter survival time of the other base station. value.

10, A device for obtaining a silent period parameter, comprising:

a setting unit, configured to: when the adjusted duration value of the silent period parameter reaches a preset trigger value, The pre-quiet period parameter value is set to the expected silent period parameter value, and the silent period parameter survival duration value is set to an initial value.

The apparatus according to claim 10, wherein the first adjustment unit comprises:

a first comparing unit, configured to compare a current silent period parameter value with an expected silent period parameter value;

And a first processing unit, configured to adjust a corresponding quiet period parameter survival time value according to the comparison result of the first comparison unit.

The device of claim 11, further comprising:

The first receiving unit is configured to receive the silent period scheduling information sent by the other base station, where the silent period scheduling information includes the other base station silent period parameter value and the silent period parameter survival duration value;

And a second adjusting unit, configured to adjust, according to the current base station quiet period parameter value and the received silent period scheduling information of the other base station, the silent period parameter value and the silent period parameter survival duration value of the current base station.

13. The apparatus according to claim 12, wherein the second adjustment unit comprises:

a second comparing unit, configured to compare the current silent period parameter value with the silent period parameter value of the other base station; the second processing unit, configured to adjust the corresponding current base station according to the comparison result of the first comparing unit The quiet period parameter survival time value.

14. A device for obtaining a silent period parameter, comprising:

The device according to claim 14, wherein the third adjusting unit comprises:

a third comparing unit, configured to compare the current silent period parameter value with the silent period parameter value of the other base station; the third processing unit, configured to adjust the corresponding current base station according to the comparison result of the first comparing unit The quiet period parameter survival time value.

A communication system, comprising:

a first base station, configured to adjust, according to the current silent period parameter value and the expected silent period parameter value, a silent period parameter survival duration value corresponding to the current silent period parameter value; and the adjusted duration of the silent period parameter When the preset trigger value is reached, the current silent period parameter value is set to the expected silent period parameter value, and the silent period parameter survival time value is set to an initial value, and the current silent period parameter value is The quiet period parameter survival time value is sent as the silent period scheduling information; The second base station is configured to receive the quiet period scheduling information sent by the first base station, and adjust the silent period parameter value and the silent period parameter survival time value according to the silent period scheduling information of the first base station.

17. The system of claim 16, the first base station comprising:

a setting unit, configured to: when the adjusted duration value of the silent period parameter reaches a preset trigger value, set the current silent period parameter value to the expected silent period parameter value, and set the silent period parameter The lifetime value is set to the initial value.

18. The system of claim 16, the second base station comprising: