CN101677257B - Method, device and system for obtaining silent period parameters - Google Patents

Abstract

The embodiment of the present invention discloses a method for obtaining silent period parameters, which is characterized in that it includes: adjusting the silent period parameter survival corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value Duration value; when the adjusted silent period parameter survival time value reaches the preset trigger value, set the current silent period parameter value as the expected silent period parameter value, and set the silent period parameter survival time The value is set to the initial value. By adopting the invention, each base station can lower the parameter value of the quiet period according to its own needs, and finally realize the lowering of the silent period synchronization parameter of the base stations in the same network.

Description

A method, device and system for obtaining silent period parameters

technical field

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

Background technique

With the development of radio technology, cognitive radio technology has been more and more widely used, and spectrum detection is cognitive radio technology to realize the use of existing allocated but often idle spectrum by the network.

In order to improve the accuracy of spectrum detection, during the detection period, the IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) 802.22 standard requires each base station to schedule a quiet period (quiet period, QP) to detect the spectrum being used. In order to avoid interference between base stations and make spectrum detection results more effective, IEEE802.22 requires base stations to achieve synchronization of silent periods by exchanging silent period parameters.

Among them, the IEEE802.22 standard adopts a two-level detection structure for spectrum detection and defines two silent periods, namely, QP for intra-frame sensing and QP for inter-frame sensing. frame sensing). Among them, QP for intra-frame sensing can be placed inside a normal frame, and the length is less than the length of a 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 (customer-premise equipment, CPE) and adjacent BSs about the scheduling information of the silent period through the following information:

Detection cycle parameter (Intra-frame Sensing Cycle Length): We use N to represent Intra-frameSensing Cycle Length, that is, select a superframe every few superframes to arrange QP for intra-framesensing for spectrum detection, and the larger N is, it means the sensing cycle The longer, therefore, each base station should select the minimum value of the adjacent cell when synchronizing.

It should be noted that the IEEE802.22 standard designs a superframe structure for the Media Access Control (MAC) layer. Specifically, the channel time of the MAC layer is divided into equal-length superframes (superframes). The length of each superframe is 160ms, consisting of superframe preamble+frame preamble, superframe control header (superframe Control Header, SCH) and 16 ordinary frames with a length of 10ms.

Detection position parameter (Intra-frame Sensing Cycle Offset): The position of the superframe selected for spectrum detection in a cycle, its value only indicates the position, not a quantitative value, and is not very important in synchronization.

Detection frame bitmap parameter (Intra-frame Sensing Cycle frame Bitmap): We use m to represent the Intra-frame Sensing Cycle frame Bitmap, which indicates the number of common frames involved in detection in a superframe, and this field has 16 bits , each bit represents whether a common frame participates in the detection status. The larger m is, the more ordinary frames are involved in the detection. Therefore, each base station should select the maximum value of the adjacent cell when synchronizing.

Detection duration parameter (Intra-frame Sensing Duration): We use d to represent Intra-frame Sensing Duration, which represents the length of the detection period in a normal frame, in units of symbols. During synchronization, the length of the detection period in a frame should be adjusted to the maximum value of the adjacent cell.

In the prior art, when the QP for Intra-frame Sensing in the IEEE802.22 network is synchronized, the variables N, m, and d defined above are the minimum (N) or maximum ( m,d). Suppose there are K base stations BS1, BS2, ..., BSK in a certain area, and these base stations can be directly or indirectly interconnected. We define two sets of variables (Ni, mi, di) and (Ni’, mi’, di’) related to BSi, 1<=i<=K. Among them, (Ni, mi, di) is the value when BSi sends SCH, and (Ni’, mi’, di’) is one of the minimum values that can meet the measurement requirements. At initialization, we have, (Ni, mi, di) = (Ni', mi', di'). Then after synchronization we have:

N _syn =min(Ni',i=1,2,...k);

m _syn, =max(mi',i=1,2,...k);

d _syn = max(di',i=1,2,...k);

N _syn , m _{syn ,} and d _syn represent the values used by each base station in QP for Intra-frame Sensing scheduling after synchronization respectively. After synchronization, (Ni, mi, di) = (N _syn , m _syn, , d _syn ), i=1, 2,..., K. The parameters related to QP for Intra-frame Sensing in the SCH message of each base station are directly Or indirectly reflect N _syn , m _syn, , d _syn . In general, we have, Ni<Ni',mi>mi', and di>di'.

The value of N _syn , m _syn, , d _syn may change with the value of Ni, mi, di. In the prior art, when using the silent period parameter values (Ni, mi, di) of the base station for synchronization, each base station does not know precisely whether to readjust each parameter, which may easily cause unnecessary reselection, and if the silent period If the period scheduling information is lost during the transmission process, it will also affect the global quiet period adjustment of the network, and the fault tolerance is poor.

Contents of the invention

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

In order to solve the above technical problems, an embodiment of the present invention provides a method for obtaining silent period parameters, including:

According to the current silent period parameter value and the expected silent period parameter value, adjust the silent period parameter survival time value corresponding to the current silent period parameter value, the adjustment is specifically: when the expected silent period parameter value and the current silent period parameter value When the silent period parameter values are equal, the silent period parameter survival time value corresponding to the current silent period parameter value is set as the initial value; when the current silent period parameter value is better than the expected silent period parameter, it will be the same as The survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented, and the current silent period parameter value is better than the expected silent period parameter value in any one of the following situations or a combination of multiple situations: expected detection The period parameter value is greater than the current detection period parameter value, or the expected detection frame bitmap parameter value is greater than the current detection frame bitmap parameter value, or the expected detection duration parameter value is greater than the current detection duration parameter value;

When the adjusted silent period parameter survival duration value reaches a preset trigger value, the current silent period parameter value is set as the expected silent period parameter value, and the silent period parameter survival duration value is set as initial value.

The embodiment of the present invention also provides a method for obtaining silent period parameters, including:

receiving silent period scheduling information sent by other base stations, where the silent period scheduling information includes silent period parameter values and silent period parameter survival time values of the other base stations;

According to the silent period parameter value of the current base station and the silent period scheduling information of the other base stations, the silent period parameter value and the silent period parameter survival time value of the current base station are adjusted, and the adjustment is specifically: when the silent period parameter of the other base station When the value is equal to the parameter value of the silent period of the current base station, it is further judged whether the survival time value of the silent period parameter of the current base station is less than the survival time value of the silent period parameter of the other base stations, and if it is judged to be yes, the current base station is silent The period parameter survival duration value is set as the silent period parameter survival duration value of the other base stations; when the silent period parameter value of the other base station is better than the current base station silent period parameter value, the current base station silent period parameter The value is set as the received silent period parameter value of other base stations, and the corresponding silent period parameter survival time value of the current base station is set as the silent period parameter survival time value of the other base station.

Correspondingly, an embodiment of the present invention provides an apparatus for obtaining silent period parameters, including:

The first adjustment unit is configured to adjust the survival time value of the silent period parameter corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value, the adjustment specifically being: when the expected silent period When the 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 greater than the expected silent period When the parameter is better, the survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented, and the current silent period parameter value is better than the expected silent period parameter value in any one or more of the following situations A combination of the following situations: the expected detection period parameter value is greater than the current detection period parameter value, or the expected detection frame bitmap parameter value is greater than the current detection frame bitmap parameter value, or the expected detection duration parameter value is greater than the current detection duration parameter value;

A setting unit, when the adjusted silent period parameter survival time value reaches a preset trigger value, the current silent period parameter value is set as the expected silent period parameter value, and the silent period parameter survival time value is set as the initial value.

The embodiment of the present invention also provides a device for obtaining silent period parameters, including:

The second receiving unit receives silent period scheduling information sent by other base stations, and the silent period scheduling information includes the silent period parameter value and silent period parameter survival time value of the other base station;

The third adjustment unit is configured to adjust the silent period parameter value and the silent period parameter survival time value of the current base station according to the silent period parameter value of the current base station and the received silent period scheduling information of other base stations, and the adjustment is specifically: When the silent period parameter value of the other base station is equal to the silent period parameter value of the current base station, it is further judged whether the silent period parameter survival time value of the current base station is less than the silent period parameter survival time value of the other base station, and it is judged as If yes, set the silent period parameter survival duration value of the current base station as the silent period parameter survival duration value of the other base station; when the silent period parameter value of the other base station is better than the silent period parameter value of the current base station , setting the silent period parameter value of the current base station as the received silent period parameter value of other base stations, and setting the corresponding survival time value of the silent period parameter of the current base station as the silent period parameter survival time of the other base stations value.

The embodiment of the present invention also provides a corresponding system, including:

The first base station is configured to obtain 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 other base stations;

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 is configured to receive silent period scheduling information sent by other base stations, and perform silent period synchronization according to the silent period scheduling information of the other base stations.

Implementing the embodiment of the present invention has the following beneficial effects:

Each base station can know whether to adjust its silent period parameter value through the change of the silent parameter survival time value, so as to avoid unnecessary reselection. At the same time, when the silent scheduling information between base stations is lost during the transmission process, the base station can still By comparing the current silent period parameter value with the expected silent period parameter value, the parameter value of the silent period is adjusted, which reduces the impact of information loss on the global network and improves the fault tolerance and stability of the network.

Description of drawings

FIG. 1 is a schematic flow diagram of Embodiment 1 of a method for realizing silent period synchronization according to the present invention;

Fig. 2 is a schematic flow chart of Embodiment 1 of a method for realizing silent period synchronization according to the present invention;

Fig. 3 is a schematic flow chart of Embodiment 2 of a method for realizing silent period synchronization in the present invention

Fig. 4 is a schematic flow chart of Embodiment 2 of a synchronization method for realizing a silent period in the present invention;

Fig. 5 is a structural schematic diagram of Embodiment 1 of the system of the present invention;

FIG. 6 is a schematic structural diagram of a device 1 for implementing silent period synchronization in a first base station according to a system embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second base station for implementing silent period synchronization in the first embodiment of the system of the present invention;

Fig. 8 is a schematic structural diagram of the second embodiment of the system of the present invention;

FIG. 9 is a schematic structural diagram of Embodiment 3 of the system of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The solution in the embodiment of the present invention is to use the result of comparing the current silent period parameter value of the base station with the expected silent period parameter value to adjust the silent period parameter survival time value corresponding to the current silent period parameter, and then decide whether to set The current silent period parameter value is replaced with the expected silent period parameter value, so as to realize the adjustment of the current silent period parameter value.

Referring to Fig. 1, a method embodiment one of the present invention obtains silent period parameter comprises the following steps:

100. According to the current silent period parameter value and the expected silent period parameter value, adjust the survival time value of the silent period parameter corresponding to the current silent period parameter value.

Wherein, 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; One or any combination of the detection period parameter survival time value corresponding to the period parameter, the detection frame bitmap parameter survival time value, and the detection time length parameter survival time value.

For example, the survival time value of the silent period parameter corresponding to the current detection cycle parameter value is the detection cycle parameter survival time value.

At the same time, the expected silent period parameter value is an expected silent period parameter value determined by the base station according to its own needs and current network conditions.

The step of adjusting the survival time value of the silent period parameter corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value includes:

When the expected silent period parameter value is equal to the current silent period parameter value, set the silent period parameter survival time value corresponding to the current silent period parameter value as an initial value;

When the current silent period parameter value is better than the expected silent period parameter, the survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented.

The current silent period parameter value is better than the expected silent period parameter in any of the following situations or any combination: the expected detection cycle parameter value is greater than the current detection cycle parameter value, the expected detection frame bitmap parameter value is greater than the current detection frame bit Figure 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 duration value reaches a preset trigger value, set the current silent period parameter value as the expected silent period parameter value, and set the silent period parameter survival duration value as an initial value.

For example, if the preset trigger value is set to zero, usually the initial value of the silent period parameter survival time value ranges from 1 to 255, and the initial value of the silent period parameter survival time value of each base station is consistent. At the same time, the initial value of the survival time value of the silent period parameter is usually greater than the diameter of the network where the base station is located, otherwise it will cause synchronization failure, usually preset as 1.5*network diameter<=the initial value of the silent period parameter survival time value<=2 *Network diameter.

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

Each base station can know whether to adjust its own silent period parameter value through the change of the silent parameter survival time value, avoiding unnecessary reselection, and also reducing the loss of silent scheduling information between base stations during transmission. The impact caused by the network improves the fault tolerance and stability of the network.

Fig. 2 is a schematic flow chart of the specific implementation of a method for obtaining silent period parameters according to the present invention, including:

200. Obtain an expected silent period parameter value of the current base station.

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

We replace the corresponding parameters with letters in Table 1, see Table 1 for details.

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

Table 1:

201. Compare N value and N' value, when N=N', TN=Tmax. When N<N', TN=TN-1.

For example, the value of N in the base station BS1 is 3 and less than the value of N', then the TN in the base station BS1 is subtracted by one, that is, TN=TN-1=0 in the BS1.

202. Judging whether TN reaches a preset trigger value, if it is judged yes, N=N', and TN=Tmax. When the judgment is negative, no adjustment is made.

For example, it is judged whether the TN in BS1 reaches the trigger value, and the judgment is yes. Therefore, the N value in BS1 is adjusted to the N' value, and the TN value corresponding to the N value is set as the initial value Tmax, that is, in the base station BS1, N=N'=4, TN=Tmax=5.

203. Comparing the M value and the M' value, when M=M', TM=Tmax. When M>M', TM=TM-1.

For example, the M value in the base station BS1 is 3 greater than the M' value, then the TM in the base station BS1 is subtracted by one, that is, TM=TM-1=0 in the BS1.

204. Judging whether TM reaches the expected trigger value, if it is judged yes, M=M', and TM=Tmax. When the judgment is negative, no adjustment is made.

For example, it is judged whether the TM in BS1 reaches the trigger value, and the judgment is yes. Therefore, the M value in BS1 is adjusted to the M' value, and the TM value corresponding to the M value is set as the initial value Tmax, that is, in the base station BS1, M=M'=3, TM=Tmax=5.

205. Compare D value and D' value, when D=D', TD=Tmax. When D>D', TD=TD-1.

For example, if the value of D in the base station BS1 is 5 equal to the value of D', then the TD in the base station BS1 is set as the initial value, that is, TD=Tmax=5 in the base station BS1.

206. Judging whether TD reaches the expected trigger value, if it is judged yes, D=D', and TD=Tmax. When the judgment is negative, no adjustment is made.

After the above adjustments, the current silent period parameter value of base station BS1 is adjusted to (N=4, M=3, D=5), and the corresponding silent period parameter survival time value is adjusted to (TN=5, TM=5 , TD=5), realized the downward adjustment of silent period parameter value (that is, increase N value, decrease M value and D value).

It should be noted that there is no necessary contextual relationship between 201, 203, and 205, and they can be executed simultaneously or in a certain order.

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

The silent period scheduling information of other base stations includes silent period parameter values and silent period parameter survival time values of other base stations.

We use the letters in Table 2 to replace the corresponding parameters of other base stations, see Table 1 for details.

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

Table 2:

208. Compare N with n, and when N=n, judge whether TN is smaller than tn, and if the judgment is yes, TN=tn. When N>n, execute N=n, and TN=tn.

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

209. Compare M with m, and when M=m, judge whether TM is smaller than tm, and if it is judged to be yes, execute TM=tm. When M<m, execute M=m, and TM=tm.

For example, M=3 in the base station BS1 is smaller than m=5 in the 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, that is, M=m=5, and TM=tm=3.

210. Compare D with d, and when D=d, judge whether TD is smaller than td, and if the judgment is yes, TD=td. When D<d, execute D=d, and TD=td.

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

Therefore, the parameters of the silent period of the base station BS1 are adjusted to (N=3, M=5, D=6) and (TN=3, TM=3, TD=3), and the parameters of the silent period and the silent period of the base station BS2 are realized. Synchronization of the parameter time-to-live value.

It should be noted that there is no necessary contextual relationship among 208, 209, and 210, and they can be executed simultaneously or in a certain order.

For another example, assume 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 base station BSi (1<=i<=K) is (Ni, Mi, Ni), then after synchronization, we have:

N _syn =min(Ni',i=1,2,...k);

M _syn, =max(Mi',i=1,2,...k);

D _syn =max(Di',i=1,2,...k);

N _syn , M _syn , and D _syn respectively represent the quantities used by each base station in silent period scheduling after synchronization. Assume Di>Di' in BSi, therefore, TNi=TNi-1. If each Di'(i=2,...,K) is smaller than Di, then the value of TNi, (i=1,2,...,K) will gradually become 0, so all base stations will reselect the value of D, In this way the network can be synchronized to a smaller D _syn value. Similarly, all base stations can be synchronized to a larger N _syn value or a smaller M _syn value.

It can be seen from the above that the first embodiment of the method of the present invention can realize the synchronization of the silent period between the base stations in the same area, and can not only adjust the synchronization parameters of the silent period between the base stations upward (that is, the value of N decreases, and the value of M and D increases). , can also accurately down-regulate the silent period synchronization parameters between base stations (that is, the N value increases, and the M and D values decrease). Each base station can know whether to adjust its silent period parameter value through the change of the silent parameter survival time value, so as to avoid unnecessary reselection. At the same time, when the silent scheduling information between base stations is lost during the transmission process, the base station can still By comparing the current silent period parameter value with the expected silent period parameter value, the parameter value of the silent period is adjusted, which reduces the impact of information loss on the global network and improves the fault tolerance and stability of the network.

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

300. Receive silent period scheduling information from other base stations that includes silent period parameter values and silent period parameter survival time values of the other base stations.

301. Adjust the silent period parameter value and the silent period parameter survival time value of the current base station according to the silent period parameter value of the current base station and received silent 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 values are one or any combination of the detection period parameter value, detection frame bitmap parameter value, and detection duration parameter value, and the current silent period parameter survival value or other The survival value of the silent period parameter of the base station is one or any combination of the corresponding detection period parameter survival duration value, detection frame bitmap parameter survival duration value, and detection duration parameter survival duration value.

It should be noted that when the current base station receives multiple pieces of silent period scheduling information sent by other base stations within the same unit time, the current base station will compare the silent period parameter values of the current base station with the received silent period parameter values of other base stations. , and finally the optimal silent period parameter value is selected as the silent period synchronization parameter value of the current unit time of the current base station through comparison.

FIG. 4 is a schematic flowchart of Embodiment 2 of a method for obtaining silent period parameters according to an embodiment of the present invention, including:

400. The current base station receives silent period scheduling information from other base stations that includes silent period parameter values and silent period parameter survival time values of other base stations.

It should be noted that the specific flow diagram of Embodiment 2 of this method is only a detailed description of the comparison and adjustment of a quiet period parameter value. When multiple silent period scheduling information is received within the same unit of time, multiple comparisons and adjustments will be made and The optimal silent period parameter value is used as the silent period synchronization parameter value of the current unit time of the current base station, and the process of each comparison and adjustment is roughly the same as that shown in this specific flowchart.

We use the letters in Table 1 to replace the corresponding parameters of the current base station, see Table 1 for details.

We use the letters in Table 3 to replace the corresponding parameters of other base stations, see Table 3 for details.

For example, base station BS1 receives silent period scheduling information sent by base station BS2. The silent period parameter value and the silent period parameter survival time value of the base station BS1 are shown in the corresponding "value" item of the value in Table 1, and the silent period parameter assignment of the base station BS2 is 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 the convenience of expression, the parameter values of other base stations are replaced by letters as shown in Table 3.

table 3:

401. Compare N with n, and when N=n, judge whether TN is less than tn, and if the judgment is yes, TN=tn. When N>n, execute N=n, and TN=tn.

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

402. Compare M with m, and when M=m, judge whether TM is smaller than tm, and if it is judged to be yes, execute TM=tm. When M<m, execute M=m, and TM=tm.

For example, M=3 in the base station BS1 is smaller than m=5 in the 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, that is, M=m=5, and TM=tm=3.

403. Compare D with d, and when D=d, judge whether TD is smaller than td, and if the judgment is yes, TD=td. When D<d, execute D=d, and TD=td.

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

Therefore, 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).

It can be seen from the above that the second embodiment of the method of the present invention can achieve better silent period parameter values and silent period parameter survival duration values obtained through comparison between base stations, and keep the obtained better silent period parameter values and silent period parameters alive. The duration value is further compared with other base stations in the same network until finally the silent period parameter value and the silent period parameter survival time value of all base stations are synchronized. Among them, obtaining a better survival time value of the silent period parameter can make the corresponding quiet period parameter value more stable and effective, and improve the stability of the overall network.

It should be noted that 401, 402, and 403 have no necessary context and can be executed at the same time or in a certain order.

Fig. 5 is a schematic structural diagram of the first embodiment of the system of the present invention, and the first embodiment of the system of the present invention includes:

The first base station 1 is configured to obtain 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 adjust its own silent period parameters according to the silent period scheduling information of the first base station 1 .

Wherein, the first base station 1 includes a device for obtaining silent period parameters, and FIG. 6 is a schematic structural diagram of device one for obtaining silent period parameters, and said device one includes:

The first adjustment unit 11 is configured to adjust the survival time value of the silent period parameter 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 as the expected silent period parameter value when the adjusted silent period parameter survival time value reaches a preset trigger value, and sets the silent period parameter survival time The value is set to the initial value.

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

For example, the first base station 1 sends the compared and adjusted current silent period parameter value and silent period parameter survival time value as the silent period scheduling information of the first base station to the second base station 2 within the current unit time.

Wherein, the first adjustment unit 1 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 survival time value of the corresponding silent period parameter 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, setting the silent period parameter survival time value corresponding to the current silent period parameter value as an initial value;

When the current silent period parameter value is better than the expected silent period parameter, the survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented. During specific implementation, the decrement value of the silent parameter survival time value is usually set to one.

The current silent period parameter value is better than the expected silent period parameter in any of the following situations or any combination: the expected detection cycle parameter value is greater than the current detection cycle parameter value, the expected detection frame bitmap parameter value is greater than the current detection frame bit Figure parameter value, the expected detection duration parameter value is greater than the current detection duration parameter value.

It can be seen from the above that the synchronization device 1 in the system embodiment 1 of the present invention can realize the synchronization of the silent period between base stations in the same area, and can not only adjust the synchronization parameters of the silent period between the base stations upward (that is, the detection period parameter value decreases, the detection frame Bitmap parameter values and detection duration parameter values increase), and the silent period synchronization parameters between base stations can also be accurately adjusted (that is, detection cycle parameter values increase, detection frame bitmap parameter values and detection duration parameter values decrease). Simultaneously when the silent scheduling information between base stations is lost in the transmission process, the synchronization device in each base station can still carry out the adjustment of the silent period parameter value to the base station by comparing the current silent period parameter value and the expected silent period parameter value of the base station, reducing The impact of information loss on the global network is eliminated, and the fault tolerance and stability of the network are improved.

In Embodiment 1 of the system of the present invention, the second base station 2 also includes a device for obtaining parameters of the silent period. FIG. 7 is a schematic structural diagram of the device 2 for obtaining parameters of the silent period. 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 silent period parameter value and the survival time value of the silent period parameter of the other base stations.

The third adjustment unit 22 is configured to adjust the silent period parameter value and the silent period parameter survival time value of the current base station according to the silent period parameter value of the current base station and the received silent period parameter value of the first base station 1 .

It should be noted that when the current base station receives multiple pieces of silent period scheduling information sent by other base stations within the same unit time, the current base station will perform a one-by-one calculation based on the silent period parameter value of the current base station and the received silent period parameter values of other base stations. After comparison, the optimal silent period parameter value is finally selected as the silent period synchronization parameter value of the current unit time of the current base station.

Wherein, the third adjustment unit 22 specifically includes a second comparison unit 221, configured to compare the current silent period parameter value with the expected silent period parameter value of the other base station;

The third processing unit 222 is configured to adjust the corresponding survival time value of the silent period parameter of the current base station according to the comparison result of the first comparing unit.

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

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

The detection period parameter value of the other base stations is less than the detection period parameter value of the current base station; the detection frame bitmap parameter value of the other base station is greater than the detection frame bitmap parameter value of the current base station; the detection duration parameter value of other base stations is greater than the current base station The value of the detection duration parameter.

It can be seen from the above that the synchronization device 2 in the first embodiment of the system of the present invention can achieve better silent period parameter values and silent period parameter survival time values obtained through comparison between base stations, and combine the obtained better quiet period parameter values and The survival time value of the silent period parameter is further compared with other base stations in the same network until finally the silent period parameter value and the silent period parameter survival time value of all base stations are synchronized. Among them, obtaining a better survival time value of the silent period parameter 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 set in the same base station. The device one and the device two can also be made into the same part and realize the corresponding functions of the device one and the device two.

Fig. 8 is a schematic structural diagram of Embodiment 2 of the system of the present invention, wherein the first base station 1 and the second base station 2 can respectively send silent period scheduling information to the other party, and can also receive the silent period scheduling information sent by the other party respectively, and according to the other party The silent period scheduling information sent realizes silent period synchronization.

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

By implementing the present invention, each base station can lower the silent period parameter value according to its own needs (that is, the value of N increases, and the value of D and M decreases). Synchronous N increases, synchronous D value and synchronous M value decrease). At the same time, it also makes the silent period synchronization efficient and stable, because each BS knows exactly whether to re-adjust each parameter, thus avoiding unnecessary reselection, and if the scheduling information is lost during the silent period transmission, it is also possible The silent period adjustment will not affect the overall network, effectively improving fault tolerance.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (16)

1. A method for obtaining silent period parameters, characterized in that, comprising: According to the current silent period parameter value and the expected silent period parameter value, adjust the silent period parameter survival time value corresponding to the current silent period parameter value, the adjustment is specifically: when the expected silent period parameter value and the current silent period parameter value When the silent period parameter values are equal, the silent period parameter survival time value corresponding to the current silent period parameter value is set as the initial value; when the current silent period parameter value is better than the expected silent period parameter, it will be the same as The survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented, and the current silent period parameter value is better than the expected silent period parameter value in any one of the following situations or a combination of multiple situations: expected detection The period parameter value is greater than the current detection period parameter value, or the expected detection frame bitmap parameter value is greater than the current detection frame bitmap parameter value, or the expected detection duration parameter value is greater than the current detection duration parameter value; When the adjusted silent period parameter survival duration value reaches a preset trigger value, the current silent period parameter value is set as the expected silent period parameter value, and the silent period parameter survival duration value is set as initial value. 2. The method of claim 1, 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 time value includes the detection period parameter survival time value or the detection frame bitmap parameter survival time value or the detection time length parameter survival time value corresponding to the silent period parameter value. 3. The method according to claim 2, wherein when the current silent period parameter value is better than the expected silent period parameter, the silent period parameter survival duration value corresponding to the current silent period parameter value The steps to perform the decrement include: When the silent period parameter value includes a detection cycle parameter value, and the expected detection cycle parameter value is greater than the current detection cycle parameter value, the detection cycle parameter survival time value is decremented; or When the silent 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 duration value is decremented. 4. The method according to any one of claims 1 to 3, further comprising: receiving silent period scheduling information sent by other base stations, where the silent period scheduling information includes silent period parameter values and silent period parameter survival time values of the other base stations; Adjusting the silent period parameter value and the silent period parameter survival time value of the current base station according to the silent period parameter value of the current base station and the silent period scheduling information of the other base stations. 5. The method according to claim 4, wherein the silent period parameter value of the current base station and the survival time of the silent period parameter are adjusted according to the silent period parameter value of the current base station and the silent period scheduling information of the other base stations Value steps include: When the silent period parameter value of the other base station is equal to the silent period parameter value of the current base station, it is further judged whether the silent period parameter survival time value of the current base station is less than the silent period parameter survival time value of the other base station, and it is judged as If yes, set the silent period parameter survival time value of the current base station as the silent period parameter survival time value of the other base station; When the silent period parameter value of the other base station is better than the silent period parameter value of the current base station, set the silent period parameter value of the current base station as the received silent period parameter value of other base stations, and set the corresponding The silent period parameter survival time value of the current base station is set as the silent period parameter survival time value of the other base stations. 6. A method for obtaining silent period parameters, comprising: receiving silent period scheduling information sent by other base stations, where the silent period scheduling information includes silent period parameter values and silent period parameter survival time values of the other base stations; According to the silent period parameter value of the current base station and the silent period scheduling information of the other base stations, the silent period parameter value and the silent period parameter survival time value of the current base station are adjusted, and the adjustment is specifically: when the silent period parameter of the other base station When the value is equal to the parameter value of the silent period of the current base station, it is further judged whether the survival time value of the silent period parameter of the current base station is less than the survival time value of the silent period parameter of the other base stations, and if it is judged to be yes, the current base station is silent The period parameter survival duration value is set as the silent period parameter survival duration value of the other base stations; when the silent period parameter value of the other base station is better than the current base station silent period parameter value, the current base station silent period parameter The value is set as the received silent period parameter value of other base stations, and the corresponding silent period parameter survival time value of the current base station is set as the silent period parameter survival time value of the other base station. 7. The method of claim 6, 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 time value includes the detection period parameter survival time value or the detection frame bitmap parameter survival time value or the detection time length parameter survival time value corresponding to the silent period parameter value. 8. A device for obtaining silent period parameters, comprising: The first adjustment unit is configured to adjust the survival time value of the silent period parameter corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value, the adjustment specifically being: when the expected silent period When the 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 greater than the expected silent period When the parameter is better, the survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented, and the current silent period parameter value is better than the expected silent period parameter value in any one or more of the following situations A combination of the following situations: the expected detection period parameter value is greater than the current detection period parameter value, or the expected detection frame bitmap parameter value is greater than the current detection frame bitmap parameter value, or the expected detection duration parameter value is greater than the current detection duration parameter value; The setting unit is configured to set the current silent period parameter value as the expected silent period parameter value when the adjusted silent period parameter survival time value reaches a preset trigger value, and set the silent period parameter survival time The value is set to the initial value. 9. The device according to claim 8, wherein the first adjusting unit comprises: The first comparison unit is used to compare the current silent period parameter value with the expected silent period parameter value; The first processing unit is configured to adjust the survival time value of the corresponding silent period parameter according to the comparison result of the first comparison unit. 10. The apparatus of claim 9, further comprising: The first receiving unit receives silent period scheduling information sent from other base stations, and the silent period scheduling information includes the silent period parameter value and silent period parameter survival time value of the other base station; The second adjustment unit is configured to adjust the silent period parameter value and the silent period parameter survival time value of the current base station according to the silent period parameter value of the current base station and the received silent period scheduling information of other base stations. 11. The apparatus of claim 10, further comprising: a second comparing unit, configured to compare the current silent period parameter value with the silent period parameter values of the other base stations; The second processing unit is configured to adjust the corresponding survival time value of the silent period parameter of the current base station according to the comparison result of the first comparison unit. 12. A device for obtaining silent period parameters, comprising: The second receiving unit receives silent period scheduling information sent by other base stations, and the silent period scheduling information includes the silent period parameter value and silent period parameter survival time value of the other base station; The third adjustment unit is configured to adjust the silent period parameter value and the silent period parameter survival time value of the current base station according to the silent period parameter value of the current base station and the received silent period scheduling information of other base stations, and the adjustment is specifically: When the silent period parameter value of the other base station is equal to the silent period parameter value of the current base station, it is further judged whether the silent period parameter survival time value of the current base station is less than the silent period parameter survival time value of the other base station, and it is judged as If yes, set the silent period parameter survival duration value of the current base station as the silent period parameter survival duration value of the other base station; when the silent period parameter value of the other base station is better than the silent period parameter value of the current base station , setting the silent period parameter value of the current base station as the received silent period parameter value of other base stations, and setting the corresponding survival time value of the silent period parameter of the current base station as the silent period parameter survival time of the other base stations value. 13. The apparatus of claim 12, further comprising: A third comparison unit, configured to compare the current silent period parameter value with the silent period parameter values of the other base stations; The third processing unit is configured to adjust the corresponding survival time value of the silent period parameter of the current base station according to the comparison result of the third comparing unit. 14. A communication system, characterized in that it comprises: The first base station is configured to adjust the survival time value of the silent period parameter corresponding to the current silent period parameter value according to the current silent period parameter value and the expected silent period parameter value, and the adjustment is specifically: when the expected silent period When the parameter value is equal to the current silent period parameter value, the silent period parameter survival time value corresponding to the current silent period parameter value is set as an initial value; when the current silent period parameter value is greater than the expected silent period parameter When it is more optimal, the survival time value of the silent period parameter corresponding to the current silent period parameter value is decremented, and the current silent period parameter value is better than the expected silent period parameter value in any one or more of the following situations Combination of situations: the expected detection period parameter value is greater than the current detection period parameter value, or the expected detection frame bitmap parameter value is greater than the current detection frame bitmap parameter value, or the expected detection duration parameter value is greater than the current detection duration parameter value; when the adjusted When the survival duration value of the silent period parameter reaches a preset trigger value, set the current silent period parameter value as the expected silent period parameter value, and set the silent period parameter survival duration value as an initial value, and set The current silent period parameter value and the silent period parameter survival duration value are sent as silent period scheduling information; The second base station is configured to receive the silent period scheduling information sent by the first base station, and adjust its own silent period parameter value and silent period parameter survival time value according to the silent period scheduling information of the first base station, the adjustment specifically is: when the silent period parameter value of the first base station is equal to the silent period parameter value of the second base station, further judging whether the silent period parameter survival time value of the second base station is shorter than the silent period parameter value of the first base station period parameter survival duration value, when judged to be yes, the silent period parameter survival duration value of the second base station is set as the silent period parameter survival duration value of the first base station; when the silent period parameter value of the first base station When it is better than the silent period parameter value of the second base station, set the silent period parameter value of the second base station as the received silent period parameter value of the first base station, and set the corresponding silent period parameter value of the second base station The silent period parameter survival time value of the first base station is set as the silent period parameter survival time value of the first base station. 15. The system of claim 14, the first base station comprising: The first adjustment unit is configured to adjust the survival time value of the silent period parameter 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 is configured to set the current silent period parameter value as the expected silent period parameter value when the adjusted silent period parameter survival time value reaches a preset trigger value, and set the silent period parameter survival time The value is set to the initial value. 16. The system of claim 14, the second base station comprising: The second receiving unit receives silent period scheduling information sent from the first base station, where the silent period scheduling information includes the silent period parameter value of the first base station and the survival time value of the silent period parameter; The third adjustment unit is configured to adjust the silent period parameter value and the silent period parameter survival time value of the second base station according to the silent period parameter value of the second base station and the received silent period scheduling information of the first base station.

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