CN112074014B - Channel selection method, device, electronic equipment and storage medium - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the application discloses a channel selection method, a device, electronic equipment and a storage medium. Comprising the following steps: acquiring a gateway uplink channel sequence; periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, wherein the gateway uplink channels selected in each adjacent period are different; and carrying out information interaction with the terminal through an uplink channel of the repeater. The repeater periodically selects a second number of gateway uplink channels from the acquired gateway uplink channel sequence, and takes the selected gateway uplink channels as repeater uplink channels, and because the gateway uplink channels selected in each adjacent period are different, the determined repeater uplink channels are not fixed on one channel in the adjacent period, the anti-interference capability of the repeater is enhanced, and because channel resources are automatically selected by the repeater without participation of the gateway, the working pressure of the gateway is reduced.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a channel selection method, a device, electronic equipment and a storage medium.
Background
In the process of communicating with the terminal through the repeater, the gateway and the repeater are respectively single-transmission multi-reception devices, namely, the gateway can only transmit on one channel at the same time in downlink transmission, and can simultaneously receive on a plurality of channels in uplink reception. Therefore, a plurality of repeaters can work under one gateway at the same time, in order to avoid the conflict among the plurality of repeaters, two modes of static configuration and gateway planning are adopted to set up the uplink channel of the repeater at present, wherein the static configuration refers to that when the repeater gateway is deployed, the available uplink channel is found out through on-site frequency sweep and is statically configured for the repeaters; the gateway planning refers to accurately planning an uplink channel of each repeater through a gateway, so as to ensure that resources among different repeaters are not conflicted.
However, when adopting static configuration, the repeater always uses a fixed repeater uplink channel, and when a certain repeater uplink channel is interfered for a long time, the repeater is continuously influenced, so that the anti-interference capability of the repeater is reduced; when the gateway planning is adopted, the gateway is used for distributing the uplink channel of the repeater to each repeater, and although the uplink channels of the repeaters among different repeaters can be ensured not to collide, the gateway is required to acquire the geographic position information of each repeater and to determine the geographic position information by adopting a complex algorithm, so that the working pressure and the deployment difficulty of the gateway are increased. Therefore, the existing determination mode of the uplink channel of the repeater can not meet the communication requirement of the user.
Disclosure of Invention
The embodiment of the application provides a channel selection method, a device, electronic equipment and a storage medium, so as to realize the selection of an uplink channel of a repeater.
In a first aspect, an embodiment of the present application provides a channel selection method, which is applied to a repeater, including:
acquiring a gateway uplink channel sequence, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels;
periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, wherein the gateway uplink channels selected in each adjacent period are different, and the second number is smaller than the first number;
and carrying out information interaction with the terminal through an uplink channel of the repeater.
In a second aspect, an embodiment of the present application provides a channel selection apparatus, including: the gateway uplink channel sequence determining module is used for obtaining a gateway uplink channel sequence, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels;
the repeater uplink channel selection module is used for periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, wherein the gateway uplink channels selected in each adjacent period are different, and the second number is smaller than the first number;
and the information interaction module is used for carrying out information interaction with the terminal through the uplink channel of the repeater.
In a third aspect, an embodiment of the present application provides an electronic device, including:
one or more processors;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the methods in any of the embodiments of the present application.
In a fourth aspect, embodiments of the present application also provide a computer storage medium having stored thereon a computer program which, when executed by a processor, implements a method as in any of the embodiments of the present application.
According to the technical scheme of the embodiment of the application, the repeater periodically selects the second number of gateway uplink channels from the acquired gateway uplink channel sequence, and takes the selected gateway uplink channels as the repeater uplink channels, and because the gateway uplink channels selected in each adjacent period are different, the determined repeater uplink channels cannot be fixed on one channel in the adjacent period, so that the anti-interference capability of the repeater is enhanced, and because the channel resources are automatically selected through the repeater without participation of the gateway, the working pressure of the gateway is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 (a) is a flowchart of a channel selection method according to a first embodiment of the present application;
fig. 1 (b) is a schematic diagram of an application scenario of a channel selection method according to an embodiment of the present application;
FIG. 1 (c) is a schematic diagram of the selection result of the uplink channel of the repeater selected by the 8-channel repeater;
fig. 2 (a) is a flowchart of a channel selection method according to a second embodiment of the present application;
FIG. 2 (b) is a schematic diagram of a random selection algorithm according to a second embodiment of the present application;
fig. 2 (c) is a schematic structural diagram of indication information provided in the second embodiment of the present application;
fig. 3 is a schematic structural diagram of a channel selection device according to a third embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings.
It should be further noted that, for convenience of description, only some, but not all of the matters related to the present application are shown in the accompanying drawings. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example 1
Fig. 1 (a) is a flowchart of a channel selection method according to an embodiment of the present application, where the embodiment is applicable to a case of selecting an uplink channel of a repeater, the method may be performed by a channel selection device according to an embodiment of the present application, and the device may be implemented in a software and/or hardware manner. As shown in fig. 1 (a), the method specifically includes the following operations:
step 101, acquiring a gateway uplink channel sequence, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels.
Optionally, acquiring the gateway uplink channel sequence may include: scanning in a preset resource range to determine that a periodic broadcast message is received; extracting gateway identification for sending the periodic broadcast message from the periodic broadcast message; and acquiring a gateway uplink channel sequence and a gateway downlink channel corresponding to the gateway according to the gateway identifier.
As shown in fig. 1 (b), which is a schematic diagram of an application scenario of a channel selection method, when a gateway sends a periodic broadcast message to a terminal through a repeater, an unoccupied frequency point is selected in a designated downlink channel resource area, the unoccupied frequency point is used as a gateway downlink channel, and a gateway uplink channel is selected in a designated uplink channel resource area. For example, the downlink channel resource region includes d_ch0-15, the selected gateway downlink channel is dch=d_ch1, and the selected gateway uplink channel includes 16 UCH [0] -UCH [15] =u_ch0-15 ], and the 16 gateway uplink channels selected by the gateway are formed into a gateway uplink channel sequence. Since the gateway uplink channel sequence includes the first number of gateway uplink channels, the first number is 16 in this embodiment, but the specific value of the first number is not limited thereto. The gateway may send a periodic broadcast message on the determined gateway downlink channel, where the periodic broadcast message is sent according to a specified period, for example, the broadcast message is sent every 1ms, and in this embodiment, the specific value of the specified period is not limited. The repeater scans and receives periodic broadcast messages in a preset resource area after being started, wherein the preset resource area can specifically refer to the downlink channel resource area d_ch0-15, the broadcast messages in the embodiment can specifically be beacon messages, and gateway identifications are carried in the beacon messages, and because gateway uplink channels and gateway downlink channels corresponding to the gateways are determined in advance, gateway uplink channel sequences UCH 0-UCH 15 and gateway downlink channels DCH corresponding to the gateways can be obtained according to the gateway identifications and stored.
Step 102, periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and using the selected gateway uplink channels as repeater uplink channels.
Wherein the selected gateway uplink channels are different for each adjacent period and the second number is less than the first number.
Specifically, after determining that the gateway uplink channel sequence is acquired, the repeater selects a second number of gateway uplink channels from the determined gateway uplink channel sequence in order to avoid resource waste, and a specific value of the second number may be determined according to the supporting capability of the repeater.
Optionally, before periodically selecting the second number of gateway uplink channels from the gateway uplink channel sequence and taking the selected gateway uplink channels as the repeater uplink channels, the method further includes: periodically switching to a gateway downlink channel; receiving a periodic broadcast message on a gateway downlink channel; time synchronization is maintained with the gateway by periodically broadcasting messages.
Specifically, the repeater is periodically switched to the determined gateway uplink channel dch=d_ch1, and receives the broadcast message on the gateway uplink channel, where the time of receiving the broadcast message by the repeater is consistent with the time of sending the broadcast message by the gateway, so as to realize synchronization of the repeater and the gateway time.
When determining that the time synchronization with the gateway is performed, the repeater may turn on the sweep again, select an unoccupied frequency bin in the designated downlink channel resource region, and use the unoccupied frequency bin as a repeater downlink channel, for example, the repeater downlink channel selected in the downlink channel resource region d_ch0-15 is rdch=d_ch2. And the repeater will also periodically select a second number, i.e., 8 gateway uplink channels RUCH 0-RUCH 7, from the acquired gateway uplink channel sequence, with the selected gateway uplink channel being the repeater uplink channel.
Optionally, periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and using the selected gateway uplink channels as repeater uplink channels may include: generating a random number sequence when determining to be time-synchronized with the gateway and receiving the periodic broadcast message, wherein the random number sequence comprises a first number of integers; and selecting a second number of gateway uplink channels from the gateway uplink channel sequence by adopting a random selection algorithm according to the random number sequence, and taking the selected gateway uplink channels as repeater uplink channels.
Specifically, each time the repeater receives a periodic broadcast message, a random number sequence is generated, including a first number of integers, e.g., generatedThe resultant random number is R16]＝[r 0 ,r 1 ,r 2 ,r 3 ,r 4 ,r 5 ,r 6 ,r 7 ,r 8 ,r 9 ,r 10 ,r 11 ,r 12 ,r 13 ,r 14 ,r 15 ]In the present embodiment, the random number sequence R16 is used]The description is given by taking 16 integers as examples. Based on a randomly-generated random number sequence R16]UCH [0] of uplink channel sequence from gateway by adopting random selection algorithm]-UCH[15]And selecting 8 gateway uplink channels, and taking the selected 8 gateway uplink channels as repeater uplink channels. As shown in fig. 1 (c), the selection result of the uplink channel of the repeater selected by the 8-channel repeater is shown schematically, so that it can be seen that the uplink channel of the gateway selected by each adjacent period is different in the above manner, and thus, the situation that the channel is continuously interfered is avoided.
And step 103, performing information interaction with the terminal through the repeater uplink channel.
Optionally, the information interaction with the terminal through the uplink channel of the repeater may include: adding the random number sequence as the relay indication information into the periodic broadcast message and sending the periodic broadcast message to the terminal so that the terminal determines a relay uplink channel according to the random number sequence; and receiving service data sent by the terminal through the uplink channel of the repeater.
Specifically, after completing the downlink channel RDCH and the uplink channels RUCH 0-RUCH 7, the repeater adds the generated random number sequence as the repeater indication information to the periodic broadcast message, and sends the information to the terminal through the downlink channel RDCH, so that the terminal can calculate the uplink channel selected by the repeater according to the random number sequence by adopting the same random selection algorithm as the repeater. Thereby enabling the repeater to receive traffic data transmitted by the terminal through the repeater uplink channel.
It should be noted that, the repeater will be in a receiving state at the uplink time, when receiving the service data sent by the terminal from one repeater uplink channel, the repeater will change to a sending state, and randomly select one channel from the gateway uplink channel sequences UCH 0-UCH 15 to forward the service data of the terminal to the gateway, and the repeater will switch to an inoculation state again after the forwarding operation is completed.
According to the technical scheme of the embodiment of the application, the repeater periodically selects the second number of gateway uplink channels from the acquired gateway uplink channel sequence, and takes the selected gateway uplink channels as the repeater uplink channels, and because the gateway uplink channels selected in each adjacent period are different, the determined repeater uplink channels cannot be fixed on one channel in the adjacent period, so that the anti-interference capability of the repeater is enhanced, and because the channel resources are automatically selected through the repeater without participation of the gateway, the working pressure of the gateway is reduced.
Example two
Fig. 2 (a) is a flowchart of a channel selection method according to a second embodiment of the present application, where the second number of gateway uplink channels is periodically selected from the gateway uplink channel sequence in the first embodiment, and the selected gateway uplink channels are specifically described as repeater uplink channels, based on the foregoing embodiments. Correspondingly, the method of the embodiment specifically comprises the following operations:
step 201, acquiring a gateway uplink channel sequence, wherein the gateway uplink channel sequence includes a first number of gateway uplink channels.
Optionally, acquiring the gateway uplink channel sequence may include: scanning in a preset resource range to determine that a periodic broadcast message is received; extracting gateway identification for sending the periodic broadcast message from the periodic broadcast message; and acquiring a gateway uplink channel sequence and a gateway downlink channel corresponding to the gateway according to the gateway identifier.
Step 202, when determining to synchronize with the gateway time and receive periodic broadcast messages, a random number sequence is generated.
Wherein the random number sequence includes a first number of integers, and the first number is specifically 16, so that the repeater generates a random number sequence including 16 integers when determining time synchronization with the gateway and receiving the periodic broadcast message, in this embodimentWherein the generated random number is R16]Exemplified, and R < 16]]＝[r 0 ,r 1 ,r 2 ,r 3 ,r 4 ,r 5 ,r 6 ,r 7 ,r 8 ,r 9 ,r 10 ,r 11 ,r 12 ,r 13 ,r 14 ,r 15 ]And each time a periodic broadcast message is received, and the random number sequence generated by the repeater each time is dynamically changed and not fixed. Since the principle of generating dynamically changing random number sequences in different periods is not an important point of the present application, a detailed description is omitted in this embodiment.
Step 203, selecting a second number of gateway uplink channels from the gateway uplink channel sequence by adopting a random selection algorithm according to the random number sequence, and taking the selected gateway uplink channels as repeater uplink channels.
Optionally, selecting a second number of gateway uplink channels from the gateway uplink channel sequence by using a random selection algorithm according to the random number sequence, and taking the selected gateway uplink channels as the repeater uplink channels may include: by RUCH [0]]＝UCH[r 0 ]The formula determines the first repeater uplink channel, wherein RUCH 0]The repeater uplink channel, r, representing sequence number 0 0 UCH [ r ] representing an integer with a sequence number of 0 in a random number sequence 0 ]And the gateway uplink channel with the sequence number of 0 in the gateway uplink channel sequence is shown. Using a given formula RUCH [ p ]]＝UCH[(q+r p ) mod first quantity]Determining a repeater uplink channel, wherein p represents the sequence number of the determined initial repeater uplink channel, is a positive integer, and 0<p<Second quantity, RUCH [ p ]]The initial repeater uplink channel with the sequence number p is represented, q represents the sequence number of the gateway uplink channel corresponding to the adjacent last repeater uplink channel, and r p Represents an integer with the sequence number p in the random number sequence, UCH [ (q+r) p ) mod first quantity]The expression sequence number is [ (q+r) p ) mod first quantity]Gateway upstream channel of (a).
Alternatively, the specified formula RUCH [ p ] is used]＝UCH[(q+r p ) mod first quantity]Determining the repeater uplink channel may include: determining the initial using a specified formulaAn initial repeater uplink channel; judging initial relay uplink channel RUCH [ p ]]Whether to overlap with the previously selected repeater uplink channel, if so, using the specified number of steps in [ (q+r) p ) mod first quantity]Overlapping until obtaining non-overlapping gateway uplink channel sequence number f, and UCH [ f ]]As the determined repeater uplink channel, otherwise, the initial repeater uplink channel is directly used as the determined repeater uplink channel.
Wherein, as shown in FIG. 2 (b), a schematic diagram of a random selection algorithm is shown, and when it is determined that a periodic broadcast message is received, the generated random number is R16]＝[4,5,5,6,4,5,5,6,0,0,0,0,0,0,0,0,]And the uplink channel sequence of gateway is UCH 0]-UCH[15]The second number is 8, then according to RUCH 0]＝UCH[r 0 ]＝UCH[4]Namely, the gateway uplink channel with the sequence number of 4 in the gateway uplink channel sequence is used as the repeater uplink channel with the sequence number of 0. According to RUCH [ p ]]＝UCH[(q+r p ) mod first quantity]The formula selects the subsequent repeater uplink channel, and 0<p<8, and p is a positive integer, the designated step number is 1.
For example, RUCH [1] =uch [ (4+5) mod16] =uch [9], since RUCH [1] does not overlap with the existing RUCH [0], RUCH [1] =uch [9]; ruch [2] = UCH [ (9+5) mod16] = UCH [14], since RUCH [2] does not overlap with the existing RUCH [0] and RUCH [1], RUCH [2] = UCH [14]; ruCH [3] =UCH [ (14+6) mod16] =UCH [4], since RUCH [3] overlaps with the existing RUCH [0], since the number of designated steps is 1, RUCH [3] =UCH [4+1] =UCH [5], at this time RUCH [3] no longer overlaps with the existing RUCH [0] -RUCH [2], thus RUCH [3] =UCH [5]; ruch [4] =UCH [ (5+4) mod16] =UCH [9], since RUCH [4] overlaps with the existing RUCH [1], RUCH [4] =UCH [9+1] =UCH [10], when RUCH [4] does not overlap with the existing RUCH [0] -RUCH [3], RUCH [4] =UCH [10]; ruch [5] = UCH [ (10+5) mod16] = UCH [15], since RUCH [5] does not overlap with the existing RUCH [0] -RUCH [4], RUCH [5] = UCH [15]; ruch [6] = UCH [ (15+5) mod16] = UCH [4], since RUCH [6] overlaps with the existing RUCH [0], RUCH [6] = UCH [4+1] = UCH [5], but after increasing by 1 with the specified step number, RUCH [6] still overlaps with the existing RUCH [3], then continue to increase by 1 with the specified step number, RUCH [6] = UCH [5+1] = UCH [6], since RUCH [6] no longer overlaps with the existing RUCH [0] -RUCH [5], RUCH [6] = UCH [6]; ruch [7] = UCH [ (6+6) mod16] = UCH [12], and since RUCH [7] does not overlap with the existing RUCH [0] -RUCH [6], RUCH [7] = UCH [12].
And 204, performing information interaction with the terminal through the uplink channel of the repeater.
Optionally, the information interaction with the terminal through the uplink channel of the repeater may include: adding the random number sequence as the relay indication information into the periodic broadcast message and sending the periodic broadcast message to the terminal so that the terminal determines a relay uplink channel according to the random number sequence; and receiving service data sent by the terminal through the uplink channel of the repeater.
As shown in fig. 2 (c), the indication information occupies 9 bytes in the periodic broadcast message, wherein each integer in the random number sequence occupies 4 bits, so each two integers occupy 1 byte, and the number Num of integers contained in the random number sequence occupies 1 byte, and num=16 in this embodiment.
It should be noted that, the periodic broadcast message includes a network identifier NetID, which occupies 3 bytes; the broadcast Type identifier Beacon Type Ind occupies 1 byte, when Beacon Type ind=0, the broadcast message is sent by the gateway, and when Beacon Type ind=1, the broadcast message is sent by the repeater; the Repeater identity Repeater ID takes 2 bytes and is valid when Beacon Type ind=1; the Repeater indication information Repeater Ind occupies 9 bytes and is valid when Beacon Type ind=1.
According to the technical scheme of the embodiment of the application, the repeater periodically selects the second number of gateway uplink channels from the acquired gateway uplink channel sequence, and takes the selected gateway uplink channels as the repeater uplink channels, and because the gateway uplink channels selected in each adjacent period are different, the determined repeater uplink channels cannot be fixed on one channel in the adjacent period, so that the anti-interference capability of the repeater is enhanced, and because the channel resources are automatically selected through the repeater without participation of the gateway, the working pressure of the gateway is reduced.
Example III
Fig. 3 is a schematic structural diagram of a channel selection device according to a third embodiment of the present application, where the device includes:
a gateway uplink channel sequence determining module 301, configured to obtain a gateway uplink channel sequence, where the gateway uplink channel sequence includes a first number of gateway uplink channels;
a repeater uplink channel selection module 302, configured to periodically select a second number of gateway uplink channels from the gateway uplink channel sequence, and use the selected gateway uplink channels as repeater uplink channels, where the selected gateway uplink channels in each adjacent period are different, and the second number is smaller than the first number;
and the information interaction module 303 is configured to interact information with a terminal through the uplink channel of the repeater.
The device can execute the channel selection method provided by any embodiment of the application, and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment may be found in the method provided by any embodiment of the present application.
Optionally, the gateway uplink channel sequence determining module 301 is configured to scan within a preset resource range to determine that a periodic broadcast message is received;
extracting gateway identification for transmitting the periodic broadcast message from the periodic broadcast message;
and acquiring a gateway uplink channel sequence and a gateway downlink channel corresponding to the gateway according to the gateway identifier.
Optionally, the device further includes a time synchronization module, configured to periodically switch to the gateway downlink channel;
receiving the periodic broadcast message on the gateway downlink channel;
time synchronization is maintained with the gateway through the periodic broadcast messages.
Optionally, the repeater uplink channel selection module includes:
a random number sequence generation sub-module, configured to generate a random number sequence when determining that the random number sequence is time-synchronized with the gateway and receiving the periodic broadcast message, where the random number sequence includes a first number of integers;
and the repeater uplink channel selection sub-module is used for selecting a second number of gateway uplink channels from the gateway uplink channel sequence by adopting a random selection algorithm according to the random number sequence, and taking the selected gateway uplink channels as the repeater uplink channels.
Optionally, the repeater uplink channel selection sub-module further includes:
a first selection module for passing RUCH 0]＝UCH[r 0 ]The formula determines the first repeater uplink channel, wherein RUCH 0]The repeater uplink channel, r, representing sequence number 0 0 Represents an integer with a sequence number of 0 in the random number sequence, UCH [ r ] 0 ]Representing a gateway uplink channel with a sequence number of 0 in the gateway uplink channel sequence;
a second selection module for applying a specified formula RUCH [ p ]]＝UCH[(q+r p ) mod first quantity]Determining a repeater uplink channel, wherein p represents a sequence number of the determined initial repeater uplink channel, and 1<p<Second quantity-1, RUCH [ p ]]The initial repeater uplink channel with the sequence number p is represented, q represents the sequence number of the gateway uplink channel corresponding to the adjacent last repeater uplink channel, and r p Represents the integer with the sequence number p in the random number sequence, UCH [ (q+r) p ) mod first quantity]The expression sequence number is [ (q+r) p ) mod first quantity]Gateway upstream channel of (a).
Optionally, the second selecting module is further configured to: determining an initial repeater uplink channel by adopting the specified formula;
judging the RUCH [ p ] of the initial repeater uplink channel]Whether overlapping with the previously selected repeater uplink channel, if so, using a specified number of steps at the [ (q+r) p ) mod first quantity]Overlapping until obtaining non-overlapping gateway uplink channel sequence number f, and UCH [ f ]]As the determined repeater uplink channel, otherwise, directly taking the initial repeater uplink channel as the determined repeaterAn upstream channel.
Optionally, the information interaction module is further configured to add the random number sequence as a repeater indication information to the periodic broadcast message and send the information to the terminal, so that the terminal determines the uplink channel of the repeater according to the random number sequence;
and receiving service data sent by the terminal through the uplink channel of the repeater.
Example IV
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Fig. 4 illustrates a block diagram of an exemplary electronic device 412 suitable for use in implementing embodiments of the application. The electronic device 412 shown in fig. 4 is only an example and should not be construed as limiting the functionality and scope of use of embodiments of the application.
As shown in fig. 4, the electronic device 412 is in the form of a general purpose computing electronic device. Components of electronic device 412 may include, but are not limited to: one or more processors 416, a memory 428, a bus 418 that connects the various system components (including the memory 428 and the processor 416).
Bus 418 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Electronic device 412 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by electronic device 412 and includes both volatile and nonvolatile media, removable and non-removable media.
Memory 428 is used to store instructions. Memory 428 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 430 and/or cache memory 432. The electronic device 412 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 434 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, commonly referred to as a "hard disk drive"). Although not shown in fig. 4, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 418 via one or more data medium interfaces. Memory 428 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of embodiments of the application.
A program/utility 440 having a set (at least one) of program modules 442 may be stored in, for example, memory 428, such program modules 442 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 442 generally perform the functions and/or methodologies in the described embodiments of the application.
The electronic device 412 may also communicate with one or more external electronic devices 414 (e.g., keyboard, pointing electronic device, display 424, etc.), with one or more electronic devices that enable a user to interact with the electronic device 412, and/or with any electronic device (e.g., network card, modem, etc.) that enables the electronic device 412 to communicate with one or more other computing electronic devices. Such communication may occur through an input/output (I/O) interface 422. Also, the electronic device 412 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through the network adapter 420. As shown, network adapter 420 communicates with other modules of electronic device 412 over bus 418. It should be appreciated that although not shown in fig. 4, other hardware and/or software modules may be used in connection with electronic device 412, including, but not limited to: microcode, electronic device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
Processor 416 executes instructions stored in memory 428 to thereby perform various functional applications and data processing, such as implementing channel selection methods provided by embodiments of the present application: acquiring a gateway uplink channel sequence, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels; periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, wherein the gateway uplink channels selected in each adjacent period are different, and the second number is smaller than the first number; and carrying out information interaction with the terminal through an uplink channel of the repeater.
Example five
A fifth embodiment of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a channel selection method as provided by all the embodiments of the present application:
acquiring a gateway uplink channel sequence, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels; periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, wherein the gateway uplink channels selected in each adjacent period are different, and the second number is smaller than the first number; and carrying out information interaction with the terminal through an uplink channel of the repeater.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Note that the above is only a preferred embodiment of the present application and the technical principle applied. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the application, which is set forth in the following claims.
Claims (8)
1. A channel selection method applied to a repeater, comprising:
scanning in a preset resource range to determine that a periodical broadcast message is received, wherein the preset resource range refers to a downlink channel resource area;
extracting gateway identification for transmitting the periodic broadcast message from the periodic broadcast message;
acquiring a gateway uplink channel sequence and a gateway downlink channel sequence corresponding to a gateway according to the gateway identifier, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels;
periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, wherein the gateway uplink channels selected in each adjacent period are different, and the second number is smaller than the first number;
information interaction is carried out with the terminal through the uplink channel of the repeater;
the periodically selecting a second number of gateway uplink channels from the gateway uplink channel sequence, and taking the selected gateway uplink channels as repeater uplink channels, includes:
generating a random number sequence when determining to synchronize with the gateway time and receiving the periodical broadcast message, wherein the random number sequence comprises a first number of integers;
and selecting a second number of gateway uplink channels from the gateway uplink channel sequence by adopting a random selection algorithm according to the random number sequence, and taking the selected gateway uplink channels as the repeater uplink channels.
2. The method of claim 1, wherein the periodically selecting a second number of gateway upstream channels from the sequence of gateway upstream channels and using the selected gateway upstream channels as repeater upstream channels further comprises:
periodically switching to the gateway downlink channel;
receiving the periodic broadcast message on the gateway downlink channel;
time synchronization is maintained with the gateway through the periodic broadcast messages.
3. The method of claim 1, wherein selecting a second number of gateway upstream channels from the sequence of gateway upstream channels using a random selection algorithm based on the sequence of random numbers and using the selected gateway upstream channels as the repeater upstream channels comprises:
by RUCH [0]]=UCH[r 0 ]The formula determines the first repeater uplink channel, wherein RUCH 0]The repeater uplink channel, r, representing sequence number 0 0 Represents an integer with a sequence number of 0 in the random number sequence, UCH [ r ] 0 ]Representing a gateway uplink channel with a sequence number of 0 in the gateway uplink channel sequence;
using a given formula RUCH [ p ]]=UCH[（q+r p ) mod first quantity]Determining a repeater uplink channel, wherein p represents the sequence number of the determined initial repeater uplink channel, is a positive integer, and 0<p<Second quantity, RUCH [ p ]]The initial repeater uplink channel with the sequence number p is represented, q represents the sequence number of the gateway uplink channel corresponding to the adjacent last repeater uplink channel, and r p Represents the integer with the sequence number p in the random number sequence, UCH [ (q+r) p ) mod first quantity]The expression sequence number is [ (q+r) p ) mod first quantity]Gateway upstream channel of (a).
4. The method of claim 3, wherein the formula RUCH [ p ] is specified]=UCH[（q+r p ) mod first quantity]Determining a repeater uplink channel, comprising:
determining an initial repeater uplink channel by adopting the specified formula;
judging the RUCH [ p ] of the initial repeater uplink channel]Whether overlapping with the previously selected repeater uplink channel, if so, using a specified number of steps in the UCH [ (q+r) p ) mod first quantity]Overlapping until obtaining non-overlapping gateway uplink channel sequence number f, and UCH [ f ]]And otherwise, directly taking the initial repeater uplink channel as the determined repeater uplink channel.
5. A method according to claim 3, wherein the information interaction with the terminal via the repeater uplink channel comprises:
adding the random number sequence as a repeater indication information into the periodic broadcast message and sending the periodic broadcast message to the terminal so that the terminal determines the repeater uplink channel according to the random number sequence;
and receiving service data sent by the terminal through the uplink channel of the repeater.
6. A channel selection apparatus, comprising:
the gateway uplink channel sequence determining module is used for scanning and determining that a periodic broadcast message is received in a preset resource range, wherein the preset resource range refers to a downlink channel resource area; extracting gateway identification for transmitting the periodic broadcast message from the periodic broadcast message; acquiring a gateway uplink channel sequence and a gateway downlink channel sequence corresponding to a gateway according to the gateway identifier, wherein the gateway uplink channel sequence comprises a first number of gateway uplink channels;
a repeater uplink channel selection module, configured to periodically select a second number of gateway uplink channels from the gateway uplink channel sequence, and use the selected gateway uplink channels as repeater uplink channels, where the gateway uplink channels selected in each adjacent period are different, and the second number is smaller than the first number;
the information interaction module is used for carrying out information interaction with the terminal through the uplink channel of the repeater;
the repeater uplink channel selection module includes:
a random number sequence generation sub-module, configured to generate a random number sequence when determining that the random number sequence is time-synchronized with a gateway and receiving the periodic broadcast message, where the random number sequence includes a first number of integers;
and the repeater uplink channel selection sub-module is used for selecting a second number of gateway uplink channels from the gateway uplink channel sequence by adopting a random selection algorithm according to the random number sequence, and taking the selected gateway uplink channels as the repeater uplink channels.
7. An electronic device, the electronic device comprising:
one or more processors;
a storage means for storing one or more programs;
when executed by the one or more processors, causes the one or more processors to implement the method of any of claims 1-5.
8. A computer storage medium having stored thereon a computer program, which when executed by a processor performs the method according to any of claims 1-5.
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