WO2016070350A1

WO2016070350A1 - Method and apparatus for evaluating channel availability of station

Info

Publication number: WO2016070350A1
Application number: PCT/CN2014/090317
Authority: WO
Inventors: 李彦淳; 林梅露; 蓝洲
Original assignee: 华为技术有限公司
Priority date: 2014-11-05
Filing date: 2014-11-05
Publication date: 2016-05-12

Abstract

The present invention provides a method and apparatus for evaluating channel availability of a station. The method includes that: determining at least one first bandwidth mode supported by a station that needs to transmit data and at least one second bandwidth mode supported by the target device of the data transmission (210); according to at least one first bandwidth mode and at least one second bandwidth mode, determining at least one candidate bandwidth mode used for data transmission (220); determining the availability judging parameter and corresponding threshold of a first candidate bandwidth mode which is any one of at least one candidate bandwidth modes (230); according to the availability judging parameter and corresponding threshold, determining the availability of the first candidate bandwidth mode (240); according to the available first candidate bandwidth mode, determining the bandwidth mode used by the station for data transmission (250). When the present invention is used for evaluating channel availability, the station can avoid over protection to data transmission bandwidth having been set up and is able to use bandwidth resource reasonably and increase system throughput.

Description

Method and apparatus for channel availability assessment of a station

Technical field

Embodiments of the present invention relate to the field of wireless communication technologies, and, more particularly, to a method and apparatus for channel availability assessment of a station.

Background technique

With the development of the mobile Internet and the popularity of smart terminals, data traffic has grown rapidly. Wireless Local Area Network (English: Wireless Local Area Network, WLAN for short) has become one of the mainstream mobile broadband access technologies due to its high speed and low cost. At this stage, WLAN technology is evolving from traditional 20MHz single channel transmission to 40MHz, 80MHz, 160MHz or even wider multi-channel transmission. When using more channels to transmit data, the station (English: Station, abbreviation: STA) will be able to achieve a larger transmission rate.

The 802.11 protocol of the Institute of Electrical and Electronics Engineers (IEEE) adopts Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). The mechanism performs channel backoff and competition. The CSMA/CA mechanism requires access points and stations to listen to the channel before sending a signal to prevent collisions. The methods for the access point and the station to listen to the channel are physical carrier sensing and virtual carrier sensing. The signal can only be sent when both the physical carrier sense and the virtual carrier sense result indicate that the channel is idle.

Physical carrier sensing mainly uses the Clear Channel Assessment (CCA) method to determine the state of the channel. WLAN mainly works in the industrial, scientific and medical frequency bands (English: Industrial Scientific Medical Band, ISM for short). The ISM is an unlicensed band. The station needs to judge before transmitting data on the channel: if the received effective orthogonal frequency is complex If the power of the data transmitted by (English: Orthogonal Frequency Division Multiplexing, OFDM for short) is greater than or equal to the CCA threshold, the evaluation result of the CCA method is that the state of the channel is busy; otherwise, the state of the channel is considered to be idle.

In existing systems, the CCA threshold only changes with the bandwidth of the station where the data transmission has been established, that is, the established data transmission is preferentially protected. In this way, it is easy to cause excessive protection for the established data transmission, thereby reducing the transmission opportunities of the stations that need to initiate new data transmission, and ultimately resulting in low system throughput.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for channel availability assessment of a station, which can increase system throughput.

In a first aspect, a method for channel availability assessment of a station is provided, including: determining at least one first bandwidth mode supported by a station that needs to perform data transmission, and at least one second supported by a peer device of the data transmission a bandwidth mode; determining at least one candidate bandwidth mode for the data transmission according to the at least one first bandwidth mode and the at least one second bandwidth mode; determining availability determination parameters and the availability of the first candidate bandwidth mode Determining a threshold corresponding to the parameter, the first candidate bandwidth mode is any one of at least one candidate bandwidth mode; determining availability of the first candidate bandwidth mode according to the availability determination parameter and a threshold corresponding to the availability determination parameter; The first candidate bandwidth mode determines the bandwidth mode used by the station and the peer device for data transmission.

With reference to the first aspect, in an implementation manner of the first aspect, determining, by the availability determination parameter of the first candidate bandwidth mode, the threshold corresponding to the availability determination parameter includes: performing, for each channel of the first candidate bandwidth mode Listening, obtaining interference power of each channel of the first candidate bandwidth mode; determining a maximum allowed interference power of each channel of the first candidate bandwidth mode; wherein the availability determination parameter is the first candidate bandwidth mode The interference power of each channel, the threshold corresponding to the availability determination parameter is the maximum allowed interference power of each channel of the first candidate bandwidth mode.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, according to the availability determination parameter and the threshold corresponding to the availability determination parameter, determining the availability of the first candidate bandwidth mode includes: Determining that the first candidate bandwidth mode is available when the interference power of each channel of the candidate bandwidth mode is smaller than the maximum allowed interference power of each channel of the first candidate bandwidth mode; when the first candidate bandwidth mode is available When the interference power of any of the channels is greater than or equal to the maximum allowed interference power of any of the channels, it is determined that the first candidate bandwidth mode is unavailable.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining a maximum allowed interference power of each channel of the first candidate bandwidth mode includes: transmitting data according to a transmit power of the data transmission The transmitted transmit power is evenly distributed to each channel of the first candidate bandwidth mode, and the transmit power of each channel of the first candidate bandwidth mode is obtained; the transmit power of each channel according to the first candidate bandwidth mode. Determining a power backoff value of each channel of the first candidate bandwidth mode; determining the first to wait according to a power backoff value of each channel of the first candidate bandwidth mode The maximum allowed interference power for each channel of the bandwidth mode is selected.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining a maximum allowed interference power of each channel of the first candidate bandwidth mode includes: acquiring the first candidate bandwidth mode a minimum required power of each channel; determining a power backoff value of each channel of the first candidate bandwidth mode according to a minimum required power of each channel of the first candidate bandwidth mode; according to the first candidate bandwidth The power backoff value of each channel of the mode determines the maximum allowed interference power of each channel of the first candidate bandwidth mode.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, by the availability determining parameter of the first candidate bandwidth mode, the threshold corresponding to the availability determining parameter, includes: the first candidate bandwidth mode Each channel is intercepted to obtain interference power of each channel of the first candidate bandwidth mode; and each channel of the first candidate bandwidth mode is determined according to interference power of each channel of the first candidate bandwidth mode. Maximum allowable transmit power; determining the transmit power of the data transmitted by the station, the interference power of each channel of the first candidate bandwidth mode, and the maximum allowed transmit power of each channel of the first candidate bandwidth mode. a transmission capacity of the first candidate bandwidth mode, wherein the availability determination parameter is a transmission capacity of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is preset by the station and the first candidate bandwidth mode Corresponding minimum required transmission capacity.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, according to the availability determination parameter and the threshold corresponding to the availability determination parameter, determining the availability of the first candidate bandwidth mode includes: When the transmission capacity of the first candidate bandwidth mode is greater than the minimum required transmission capacity corresponding to the first candidate bandwidth mode, determining that the first candidate bandwidth mode is available; when the transmission capacity of the first candidate bandwidth mode is less than or equal to When the minimum required transmission capacity corresponding to the first candidate bandwidth mode is determined, it is determined that the first candidate bandwidth mode is unavailable.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, by the availability determination parameter of the first candidate bandwidth mode, the threshold corresponding to the availability determination parameter, includes: according to the first candidate bandwidth The modulation and coding mechanism of the mode transmission data determines a packet error rate of the first candidate bandwidth mode, wherein the availability determination parameter is a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the site The preset maximum allowed packet error rate corresponding to the first candidate bandwidth mode.

In combination with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining the first candidate bandwidth according to the availability determination parameter and a threshold corresponding to the availability determination parameter The availability of the mode includes: determining that the first candidate bandwidth mode is available when the packet error rate of the first candidate bandwidth mode is less than a maximum allowed packet error rate corresponding to the first candidate bandwidth mode; When the error rate of the candidate bandwidth mode is greater than or equal to the maximum allowed packet error rate corresponding to the first candidate bandwidth mode, it is determined that the first candidate bandwidth mode is unavailable.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, by the first candidate bandwidth mode that is available, the bandwidth mode used by the station and the peer device for data transmission includes: according to the first Interference power of each channel of a candidate bandwidth mode and transmission power of the data transmitted by the station, or interference power of each channel according to the first candidate bandwidth mode, transmission power and antenna of the station transmitting the data The transmission direction of the system determines a performance index of the at least one first candidate bandwidth mode that is available; determining, according to the performance index, a bandwidth mode used by the station and the peer device to perform the data transmission; wherein the performance index includes the following parameters At least one of: transmission bandwidth, transmission capacity, transmission energy consumption, and packet error rate.

In conjunction with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the at least one candidate bandwidth mode is an intersection of the at least one first bandwidth mode and the at least one second bandwidth mode.

A second aspect provides an apparatus for channel availability evaluation of a station, including: a first determining unit, configured to determine at least one first bandwidth mode supported by a station that needs to perform data transmission, and a peer device of the data transmission Supporting at least one second bandwidth mode; the second determining unit, configured to determine at least one for the data transmission according to the at least one first bandwidth mode and the at least one second bandwidth mode determined by the first determining unit a candidate bandwidth mode; a third determining unit, configured to determine a threshold of a first candidate bandwidth mode and a threshold corresponding to the availability determining parameter, where the first candidate bandwidth mode is in the at least one candidate bandwidth mode Any one of the fourth determining unit, configured to determine, according to the availability determination parameter determined by the third determining unit and the threshold corresponding to the availability determining parameter, the availability of the first candidate bandwidth mode; and the fifth determining unit, configured to: Determining the number of the site and the peer device to perform the number according to the available first candidate bandwidth mode determined by the fourth determining unit Transmission bandwidth mode employed.

With reference to the second aspect, in an implementation manner of the second aspect, the third determining unit is configured to perform, by using, listening to each channel of the first to-be-selected bandwidth mode, to obtain each of the first candidate bandwidth modes. The interference power of each channel, and determining the maximum allowed interference power of each channel in the first candidate bandwidth mode; wherein the availability determination parameter is the interference power of each channel of the first candidate bandwidth mode, the availability Determining a threshold corresponding to the parameter for each channel of the first candidate bandwidth mode Maximum allowable interference power.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the fourth determining unit is specifically configured to: when the interference power of each channel of the first candidate bandwidth mode is smaller than the first to be used Determining that the first candidate bandwidth mode is available when the maximum allowed interference power of each channel of the bandwidth mode is selected; or, if the interference power of any channel of the first candidate bandwidth mode is greater than or equal to any of When the maximum allowed interference power of the channel is determined, it is determined that the first candidate bandwidth mode is unavailable.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the third determining unit is specifically configured to allocate, according to the transmit power of the data transmission, the transmit power of the data transmission to the first Determining the transmit power of each channel of the first candidate bandwidth mode for each channel of the candidate bandwidth mode, and determining the first candidate bandwidth mode according to the transmit power of each channel of the first candidate bandwidth mode. a power backoff value of each channel, and determining a maximum allowed interference power of each channel of the first candidate bandwidth mode according to a power backoff value of each channel of the first candidate bandwidth mode.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the third determining unit is specifically configured to obtain a minimum required power of each channel of the first candidate bandwidth mode, according to the first a minimum required power of each channel of the candidate bandwidth mode, determining a power backoff value of each channel of the first candidate bandwidth mode, and performing power backoff according to each channel of the first candidate bandwidth mode a value that determines a maximum allowed interference power for each channel of the first candidate bandwidth mode.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the third determining unit is specifically configured to: listen to each channel of the first candidate bandwidth mode, and determine the first to be determined Selecting the interference power of each channel of the bandwidth mode, determining the maximum allowed transmit power of each channel of the first candidate bandwidth mode according to the interference power of each channel of the first candidate bandwidth mode, and transmitting according to the station Determining the transmission capacity of the first candidate bandwidth mode by the transmit power of the data, the interference power of each channel of the first candidate bandwidth mode, and the maximum allowed transmit power of each channel of the first candidate bandwidth mode The availability determination parameter is the transmission capacity of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a minimum required transmission capacity corresponding to the first candidate bandwidth mode preset by the station.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the fourth determining unit is specifically configured to: when the transmission capacity of the first candidate bandwidth mode is greater than the first candidate bandwidth mode Determining that the first candidate bandwidth mode is available when the minimum required transmission capacity is available; or When the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required transmission capacity corresponding to the first candidate bandwidth mode, determining that the first candidate bandwidth mode is unavailable.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the third determining unit is specifically configured to determine, according to the modulation and coding mechanism for transmitting data in the first candidate bandwidth mode, the first candidate bandwidth. The error rate of the mode; wherein the availability determination parameter is a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a maximum allowed by the site corresponding to the first candidate bandwidth mode. The rate of error packets.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the fourth determining unit is specifically configured to: when the packet loss ratio of the first candidate bandwidth mode is smaller than the first to wait When the maximum allowed packet error rate corresponding to the bandwidth mode is selected, determining that the first candidate bandwidth mode is available; or, when the packet error rate of the first candidate bandwidth mode is greater than or equal to the first candidate bandwidth mode, When the maximum allowed packet error rate is determined, it is determined that the first candidate bandwidth mode is unavailable.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the fifth determining unit is specifically configured to: use, according to the interference power of each channel of the first candidate bandwidth mode, and transmit the data by the station. Transmit power, or, according to the interference power of each channel of the first candidate bandwidth mode, the transmit power of the data transmitted by the station, and the transmit direction of the antenna system, determine at least one of the first candidate bandwidth modes that are available. a performance index, and determining, according to the performance index, a bandwidth mode used by the station and the peer device for the data transmission; wherein the performance index includes at least one of the following parameters: transmission bandwidth, transmission capacity, transmission energy consumption, and Packet error rate.

In conjunction with the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the at least one candidate bandwidth mode is an intersection of the at least one first bandwidth mode and the at least one second bandwidth mode.

In the embodiment of the present invention, when the channel is evaluated for the channel, the threshold is determined by using the threshold corresponding to the bandwidth mode of the site, instead of relying solely on the bandwidth mode of the station that has established the data transmission, so that the established mode can be avoided as much as possible. Over-protection of the bandwidth of data transmission, sites that need to transmit data can make reasonable use of bandwidth resources and increase the throughput of the system.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, One of ordinary skill in the art, without creative labor Further drawings can also be obtained from these drawings.

FIG. 1 is a schematic diagram of a typical WLAN deployment scenario in which an embodiment of the present invention is applicable.

2 is a schematic flow chart of a method for channel availability evaluation of a station according to an embodiment of the present invention.

FIG. 3 is a schematic flowchart of a method for channel availability evaluation of a station according to another embodiment of the present invention.

4 is a schematic flow chart of a method for channel availability evaluation of a station according to still another embodiment of the present invention.

Figure 5 is a schematic block diagram of a site for channel availability assessment in accordance with one embodiment of the present invention.

6 is a schematic block diagram of a site for channel availability assessment in accordance with another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

The station (English: Station, abbreviation: STA) can be a wireless communication chip, a wireless sensor or a wireless communication terminal. For example: a mobile phone that supports Wireless Fidelity (English: Wireless Fidelity, WiFi for short) communication, a tablet that supports WiFi communication, a set-top box that supports WiFi communication, and a computer that supports WiFi communication. Optionally, the site can support the 802.11ax system. Further optionally, the site supports multiple WLAN formats such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

Access Point (English: Access Point, referred to as AP), also known as wireless access point or hotspot. An AP is a special site that provides access to the site. It can be an access point for mobile users to enter the wired network. It is mainly deployed in the home, inside the building, and inside the campus. The typical coverage radius is tens of meters to hundreds of meters. Of course, it can also be deployed outdoors. An AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect the wireless network clients together and then connect the wireless network to the Ethernet. At present, the main standard adopted by AP is the Institute of Electrical and Electronics Engineers (English: 802.11 series). Specifically, the AP may be a terminal device or a network device with a WiFi chip. Optionally, the AP may be a device supporting the 802.11ax system. Further, the AP may be a wireless local area network supporting 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. , referred to as: WLAN) standard equipment.

The embodiment of the present invention can be applied to a wireless local area network, and the wireless local area network can be a basic service set (English: Basic Service Set, BSS for short). It should be understood that, under the basic network structure of the WiFi system, a plurality of basic service sets may be included in the network, and each basic service set may include one AP and multiple STAs associated with the AP. In the embodiment of the present invention, the site is taken as an example for illustrative purposes only, and the present invention is not limited thereto.

FIG. 1 is a schematic diagram of a typical WLAN deployment scenario in which an embodiment of the present invention is applicable. Figure 1 includes two sites: Site 1 and Site 2, and Site 1 and Site 2 communicate. In this system, station 1 can send a message to station 2, so that station 2 obtains the transmission data length of station 1, and likewise, station 2 can send a message to station 1, so that station 1 obtains the transmission data length of station 2, where the station is It may be the above-mentioned STA, or may be the above-mentioned AP. Among them, the number of sites can be multiple.

2 is a schematic flowchart of a method for channel availability evaluation of a station according to an embodiment of the present invention. The method of Figure 2 is performed by a site.

210. Determine at least one first bandwidth mode supported by a station that needs to perform data transmission and at least one second bandwidth mode supported by a peer device of the data transmission.

220. Determine at least one candidate bandwidth mode for the data transmission according to the at least one first bandwidth mode and the at least one second bandwidth mode.

230. Determine, according to the availability determination parameter of the first candidate bandwidth mode, a threshold corresponding to the availability determination parameter, where the first candidate bandwidth mode is any one of at least one candidate bandwidth mode.

240. Determine, according to the availability determination parameter and the threshold corresponding to the availability determination parameter, the availability of the first candidate bandwidth mode.

250. Determine, according to the available first candidate bandwidth mode, a bandwidth mode used by the station and the peer device for the data transmission.

Specifically, the bandwidth mode refers to a channel set or a frequency band selected by the station for data transmission. set. For IEEE 802.11ac systems, since all bandwidth modes include the primary channel, the set of channels used by each bandwidth mode can be uniquely determined by the channel bandwidth. For example, when the bandwidth mode is 20MHz, it means that the station uses the primary 20MHz channel for data transmission; when the bandwidth mode is 40MHz, it means that the station uses the primary 20MHz+secondary20MHz channel for a total of 40MHz for data transmission; when the bandwidth mode is 80MHz, it means that the site uses primary. 20MHz+secondary20MHz+secondary 40MHz A total of 80MHz channel for data transmission; when the bandwidth mode is 160MHz, it means that the station uses primary 20MHz+secondary20MHz+secondary 40MHz+secondary 80MHz total 160MHz channel for data transmission. The present invention is not limited to the above system, and can also be applied to the case where the general partial bandwidth mode does not include the primary channel.

As shown in Table 1 below, if the physical layer CCA module detects that the data being transmitted uses a channel containing primary 20MHz, all bandwidth modes must not be used (in the first column of the table below); if the physical layer CCA mode The group detects that the data being transmitted does not use a channel containing primary 20MHz, and uses a channel containing a secondary 20MHz, and can only use the primary 20MHz bandwidth mode for data transmission (in the second column of the table below); The CCA module detects that the data being transmitted does not use the channel containing the primary 20MHz and secondary, and uses the channel containing the secondary 40MHz, and can use the primary 20MHz, primary 40MHz bandwidth mode for data transmission (the third column in the table below) Case); if the physical layer CCA module detects that the data being transmitted does not use a channel containing primary 20MHz, secondary 20MHz and secondary 40MHz, and uses a channel containing a secondary 80MHz, the primary 20MHz, primary 40MHz, primary 80MHz bandwidth mode can be used. Data transmission (in the fourth column of the table below); if the physical layer CCA module detects If the transmitted data does not use a channel containing primary 20MHz, secondary 20MHz, secondary 40MHz and secondary 80MHz, data transmission can be performed using the primary 20MHz, primary 40MHz, primary 80MHz, primary160MHz or 80+80MHz bandwidth mode (fifth table below) The case of the column). Among them, the 80+80MHz bandwidth mode signal can be sent by two RF modules in different frequency bands, thus reducing the support bandwidth required for a single RF module. One of the 80MHz uses primary 80MHz and the other 80MHz uses secondary 80MHz. Influenced by the licensed frequency band, the two 80 MHz channels may be non-adjacent.

Table 1 Physical layer protocol idle channel evaluation channel indication channel element list

In one embodiment of the invention, the at least one candidate bandwidth mode may include all bandwidth modes supported by the station.

Optionally, in an embodiment of the present invention, in step 220, the at least one candidate bandwidth mode may be an intersection of at least one first bandwidth mode and at least one second bandwidth mode, or may be at least one first bandwidth. A true subset of the intersection of the pattern and the at least one second bandwidth pattern.

The embodiment of the present invention does not limit the form of the threshold for the availability judgment and the threshold of the availability judgment parameter. For example, the availability determination parameter may be interference power, and the threshold corresponding to the availability determination parameter may be the maximum allowed interference power; or the availability determination parameter may be the transmission capacity, and the threshold corresponding to the availability determination parameter may be the minimum required transmission capacity; or, the availability judgment The parameter may be a packet error rate, and the threshold corresponding to the availability judgment parameter may be a maximum allowed packet error rate. Those skilled in the art can design other forms of usability judgment parameters and corresponding thresholds as needed. Such designs fall within the scope of the embodiments of the present invention, and only the designed usability judgment parameters and corresponding thresholds depend on the data to be required. The bandwidth mode of the transmitted site is sufficient.

Optionally, in an embodiment of the present invention, the availability determination parameter may be the interference power of each channel of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter may be each of the first candidate bandwidth modes. The maximum allowable interference power of the channels. In this case, when the availability determination parameter of the first candidate bandwidth mode and the threshold corresponding to the availability determination parameter are determined in step 230, each channel of the first candidate bandwidth mode may be intercepted, and the first The interference power of each channel of a candidate bandwidth mode is used as the above-mentioned availability determination parameter; in addition, the maximum allowable interference power of each channel of the first candidate bandwidth mode may be determined as the threshold.

Specifically, for any candidate bandwidth mode (for example, the first candidate bandwidth mode described above), the site Each channel of the first candidate bandwidth mode may be intercepted to obtain interference information on each channel of the first candidate bandwidth mode. The interference information may include interference power, interference direction, and the like. Then, the station can use the interference power in the interference information as the availability judgment parameter of the first candidate bandwidth mode.

Optionally, as an embodiment, when determining a threshold corresponding to interference power of each channel of the first candidate bandwidth mode (ie, a maximum allowed interference power of each channel of the first candidate bandwidth mode), the site The transmit power of the data transmission may be first determined, and the transmit power is evenly distributed to each channel of the first candidate bandwidth mode to obtain the transmit power of each channel of the first candidate bandwidth mode. Then, the station may determine a power backoff value of each channel of the first candidate bandwidth mode according to the transmit power of each channel of the first candidate bandwidth mode. In this way, the station can determine the maximum allowed interference power of each channel of the first candidate bandwidth mode according to the power backoff value of each channel of the first candidate bandwidth mode.

Specifically, assuming that the station evenly distributes the transmit power to each channel of the first candidate bandwidth mode, the power size on each channel of the first candidate bandwidth mode is P_TX{ChannelSet_c}[i]. ChannelSet_c is the set of all channels of the first candidate bandwidth mode. For example, assuming ChannelSet_c = {1, 2}, it indicates that the first candidate bandwidth mode uses channels 1, 2 for data transmission. i∈ChannelSet_c, which represents the channel number. Therefore, P_TX {1, 2} [1] represents the transmission power on channel 1, and P_TX {1, 2} [2] represents the transmission power on channel 2. If the total transmit power when the first candidate bandwidth mode uses data transmission on channels 1 and 2 is P_TX_sum=15 dBm, then when the transmit power is equally distributed to 2 channels, the transmit power on channel 1 is P_TX{1 , 2}[1]=12dBm, the transmission power on channel 2 is P_TX{1, 2}[2]=12dBm.

According to the transmit power P_TX{ChannelSet_c}[i] of the data transmitted by each channel of the first candidate bandwidth mode of the station, the power backoff value on the channel i when the first candidate bandwidth mode is used can be obtained:

P_backoff{ChannelSet_c}[i]=P_max/P_TX{ChannelSet_c}[i]

Where P_max is the maximum transmit power when data transmission is performed using the bandwidth mode of 20 MHz, that is, the power corresponding to the I_CS_premit interference level.

According to the power backoff value P_backoff{ChannelSet_c}[i] of each channel of the first bandwidth mode, the maximum allowed interference power of each channel of the first bandwidth mode can be obtained: I_CS_premit{ChannelSet_c}[i]=I_CS_premit/P_backoff{ ChannelSet_c}[i] where I_CS_premit is for each channel of the first bandwidth mode without considering power backoff The maximum allowable interference power of i.

Optionally, as another embodiment, when determining a threshold corresponding to the interference power of each channel of the first candidate bandwidth mode (ie, the maximum allowed interference power of each channel in the first candidate bandwidth mode) The station may first obtain a minimum required power of each channel of the first candidate bandwidth mode, and then determine each of the first candidate bandwidth modes according to a minimum required power of each channel of the first candidate bandwidth mode. The power backoff value of the channel, and finally determining the maximum allowed interference power of each channel of the first candidate bandwidth mode according to the power backoff value of each channel of the first candidate bandwidth mode.

Specifically, the link adaptation module may preset a minimum required power P_min_req{ChannelSet_c}[i] of each channel in the first bandwidth mode, for example, P_min_req{1, 2}[1] is using channel 1, 2 The minimum required power on channel 1 for data transmission. Here, i∈ChannelSet_c,i is one channel included in the first candidate bandwidth mode, ChannelSet_c is the first candidate bandwidth mode, and ChannelSet_c∈ChannelSet_List, ChannelSet_List represents a set of at least one candidate bandwidth mode. According to the minimum required power of each channel of the first candidate bandwidth mode, a power backoff value of each channel of the first candidate bandwidth mode may be obtained:

P_backoff{ChannelSet_c}[i]=P_max/P_min_req{ChannelSet_c}[i]

Then, according to the power backoff value of each channel of the first candidate bandwidth mode, the maximum allowed interference power of each channel of the first candidate bandwidth mode may be obtained:

I_CS_premit{ChannelSet_c}[i]=I_CS_premit/P_backoff{ChannelSet_c}[i]. Here, I_CS_premit is the maximum allowable interference power on channel i without considering power backoff.

When the availability determination parameter is the interference power of each channel of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the maximum allowed interference power, optionally, in another embodiment of the present invention, at step 240 When the interference power of each channel of the first candidate bandwidth mode is smaller than the maximum allowed interference power of each channel of the first candidate bandwidth mode, that is, I_CS{ChannelSet_c} is satisfied for all channels i. [I_CS_premit{ChannelSet_c}[i], determining that the first candidate bandwidth mode is available; when the interference power of any channel of the first candidate bandwidth mode is greater than or equal to any channel of the first candidate bandwidth mode When the maximum allowable interference power, ie, for any channel i, I_CS{ChannelSet_c}[i]≥I_CS_premit{ChannelSet_c}[i] The first candidate bandwidth mode is determined to be unavailable.

Specifically, when the interference power of each channel of the first candidate bandwidth mode is smaller than the maximum allowed interference power of each channel of the first candidate bandwidth mode, the channel may be marked as idle; when the first candidate bandwidth is selected The first candidate bandwidth mode is determined to be available when the interference power of each channel of the mode is less than the maximum allowed interference power of each channel of the first candidate bandwidth mode. When the interference power of any channel i of the first candidate bandwidth mode is greater than or equal to the maximum allowed interference power of any channel i of the first candidate bandwidth mode, the channel i may be marked as busy, and the first is determined. The candidate bandwidth mode is not available.

After traversing all the candidate bandwidth modes supported by the site in the above manner, if at least one bandwidth mode is available, channel sensing is performed on the available bandwidth mode, and the first candidate to be selected including the primary channel is detected. When the bandwidth mode is transmitting data, the station performs backoff and reduces the backoff count value. When the backoff count value is reduced to 0, the backoff is completed, the station selects the optimal bandwidth mode for data transmission; if the backoff is not completed, the listener continues to listen for the next unit listening period, and then judges whether to evacuate according to the interception result. carry out.

Optionally, in another embodiment of the present invention, the availability determination parameter may be a transmission capacity of the first candidate bandwidth mode, and the threshold of the availability determination parameter may be preset by the station and the first candidate bandwidth mode. Corresponding minimum required capacity. In this case, when the availability determination parameter of the first candidate bandwidth mode and the threshold corresponding to the availability determination parameter are determined in step 230, the transmission capacity of the first candidate bandwidth mode may be determined as the availability determination parameter; The minimum required transmission capacity when data transmission using the first candidate bandwidth mode is used may be set in advance as the above threshold.

Optionally, as an embodiment, when determining a transmission capacity of any candidate bandwidth mode (for example, the foregoing first candidate bandwidth mode), the station may listen to each channel of the first candidate bandwidth mode. Obtaining interference power on each channel of the first candidate bandwidth mode, and then determining, by the station, the maximum of each channel of the first candidate bandwidth mode according to the interference power of each channel of the first candidate bandwidth mode Allowable transmit power, the last station may be based on the maximum allowed transmit power of each channel of the first candidate bandwidth mode, the interference power of each channel of the first candidate bandwidth mode detected by the station, and the station transmission data. The transmit power is predicted to predict the transmission capacity of the first candidate bandwidth mode.

Specifically, the station listens to each channel of the first candidate bandwidth mode, and obtains interference information on each channel of the first candidate bandwidth mode. The interference information may include interference power and interference Wait.

The power backoff value of each channel can be obtained according to the interference power I_CS{ChannelSet_c}[i] of each channel of the first candidate bandwidth mode:

P_backoff{ChannelSet_c}[i]

=I_CS{ChannelSet_c}[i]/I_CS_allowed{ChannelSet_c}[i]

Where I_CS_allowed{ChannelSet_c}[i] is the maximum allowed listening interference power on channel i.

According to the power backoff value on each channel of the first candidate bandwidth mode, the maximum allowed transmit power of each channel of the first candidate bandwidth mode may be obtained:

P_TX_premit{ChannelSet_c}[i]=P_TX/P_backoff{ChannelSet_c}[i]

Where P_TX is the maximum allowed transmit power on channel i without considering the power backoff value.

The station allocates the transmit power for data transmission to multiple channels according to the maximum allowed transmit power on the channel i of the first candidate bandwidth mode and the interference power on the channel i of the first candidate bandwidth mode, and the network can predict the The transmission capacity R{ChannelSet_c} of the first candidate bandwidth mode. The transmission capacity R can be obtained by a capacity estimation method such as RBIR/MMIB/EESM.

Optionally, as an embodiment, the minimum required transmission capacity R_premit{ChannelSet_c} of any candidate bandwidth mode (for example, the first candidate bandwidth mode described above) may be preset by the station according to different bandwidth modes.

When the availability determination parameter is the transmission capacity of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the minimum required capacity corresponding to the first candidate bandwidth mode preset by the station, optionally, in the present invention In another embodiment, in step 240, when the transmission capacity of the first candidate bandwidth mode is greater than the minimum required capacity corresponding to the first candidate bandwidth mode, that is, the first candidate bandwidth mode satisfies R{ ChannelSet_c}>R_premit{ChannelSet_c}, determining that the first candidate bandwidth mode is available; when the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required capacity, that is, the first candidate bandwidth mode satisfies R{ChannelSet_c When ≤ R_premit {ChannelSet_c}, it is determined that the first candidate bandwidth mode is unavailable.

It should be understood that, in an embodiment of the present invention, if the station is used to send data, the minimum required transmission capacity of the first candidate bandwidth mode may be the minimum required for the station to use the first candidate bandwidth mode for data transmission. Capacity; if the station is used to receive data, then the minimum required transmission capacity may be the minimum capacity required for the station to receive data in the first candidate bandwidth mode and then respond to the data sent by the sender, ie, the receiver replies with a confirmation. Received the packet sent by the sender The minimum capacity required.

After traversing all the bandwidth modes supported by the site in the above manner, if at least one bandwidth mode is available, the backoff module will reduce the backoff count value according to the idle state of the channel until the backoff is completed. The speed of backoff, ie the amount of backoff count reduction, can be adjusted by the number of available bandwidth modes or the predicted capacity. The initial backoff count value can be randomly selected by the station from 0 to the size of the congestion window. By selecting the initial backoff count value and backing off, it can be avoided that multiple sites simultaneously detect the simultaneous access and collision of the channel immediately after the channel is available.

It should be understood that, in one embodiment of the present invention, a channel may be a channel, a subchannel of a channel, or one or more subcarriers, which is not limited by the present invention.

Optionally, in another embodiment of the present invention, the availability determination parameter may be a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter may be the first candidate bandwidth mode preset by the station. The maximum allowed packet error rate. In this case, when the availability determination parameter corresponding to the first candidate bandwidth mode and the threshold corresponding to the availability determination parameter are determined in step 230, a modulation and coding mechanism for transmitting data according to the given first candidate bandwidth mode may be used ( English: Modulation and Coding Scheme (MCS) determines the packet error rate of the first candidate bandwidth mode as the availability determination parameter. In addition, the first candidate bandwidth mode corresponding to the first candidate bandwidth mode may be preset. The maximum allowable packet error rate is used as the above threshold.

Optionally, as an embodiment, when determining a packet error rate of any candidate bandwidth mode (for example, the foregoing first candidate bandwidth mode), the station may determine, according to a modulation and coding mechanism of the first candidate bandwidth mode transmission data. The transmission rate is then predicted based on the transmission rate of the packet error rate PER{ChannelSet_c, MCS} of the first candidate bandwidth mode.

Optionally, as an embodiment, the maximum allowed packet error rate PER_premit{ChannelSet_c, MCS} of any candidate bandwidth mode (for example, the first candidate bandwidth mode described above) may be preset by the station according to different bandwidth modes.

When the availability determination parameter is the packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the maximum allowed packet error rate of the first candidate bandwidth mode preset by the station, optionally, the present invention In another embodiment, in step 240, when the packet error rate of the first candidate bandwidth mode is smaller than the maximum allowed packet error rate of the first candidate bandwidth mode, that is, when the first candidate bandwidth mode satisfies PER When {ChannelSet_c, MCS}<PER_premit{ChannelSet_c, MCS}, it is determined that the first candidate bandwidth mode is available; when the packet error rate of the first candidate bandwidth mode is greater than or equal to the maximum allowed packet error rate, that is, when the first waiting is The selected bandwidth mode satisfies PER{ChannelSet_c, MCS}≥ When PER_premit{ChannelSet_c, MCS}, it is determined that the first candidate bandwidth mode is unavailable.

After traversing all the bandwidth modes supported by the site in the above manner, if at least one bandwidth mode is available, the backoff module will reduce the backoff count value according to the idleness of the channel, and the backoff is completed.

Optionally, in an embodiment of the present invention, when the station selects the bandwidth mode adopted by the station and the peer device for data transmission according to the available first candidate bandwidth mode in step 250, the first candidate bandwidth may be determined. The performance index of the mode is then determined based on the performance index for the bandwidth mode used by the site and the peer device to transmit data.

Specifically, the performance index of the first candidate bandwidth mode that is available may be determined according to the interference power of each channel of the first candidate bandwidth mode and the transmit power of the station transmission data; or may be according to the first candidate bandwidth mode. The interference power of each channel, the transmission power of the station transmission data, and the transmission direction of the antenna system determine the performance index of the available first candidate bandwidth mode.

The embodiment of the present invention does not limit the performance index of the bandwidth mode. For example, the performance index may be a transmission bandwidth, a transmission capacity, a transmission energy consumption, or a packet error rate. Those skilled in the art can design other forms of performance index as needed, and such designs fall within the scope of the embodiments of the present invention.

It should be understood that in one embodiment of the invention, the station may determine the transmission energy consumption based on the data transmission, the required transmission power, and the transmission duration of the station and the peer device.

It should be understood that, in step 250, determining, according to the available first candidate bandwidth mode, the bandwidth mode adopted by the station and the peer device for data transmission includes determining, according to the performance index, a bandwidth mode used by the station and the peer device for data transmission, The site can select the bandwidth mode with the best performance index as the bandwidth mode used for data transmission between the site and the peer device. For example, when the performance index is the transmission bandwidth, the bandwidth mode used by the corresponding site and the peer device for data transmission may be the bandwidth mode with the largest transmission bandwidth in the first candidate bandwidth mode; or, when the performance index is the transmission capacity, corresponding The bandwidth mode adopted by the site and the peer device for data transmission may be the bandwidth mode with the largest transmission capacity in the first candidate bandwidth mode; or, when the performance index is the transmission energy consumption, the corresponding site and the peer device perform data transmission. The bandwidth mode adopted may be the bandwidth mode in which the transmission energy consumption is the smallest in the first candidate bandwidth mode; or, when the performance index is the packet error rate, the corresponding bandwidth mode adopted by the site and the peer device for data transmission may be the first The bandwidth mode with the smallest packet error rate in the candidate bandwidth mode.

In the embodiment of the present invention, when performing channel availability evaluation on a site, the availability judgment is performed using a threshold corresponding to the bandwidth mode of the site, instead of relying solely on the site where the data transmission has been established. Bandwidth, and select the optimal bandwidth mode for data transmission from the available bandwidth modes, so as to avoid excessive protection of the bandwidth of the established data transmission, and the station that needs to transmit data can reasonably utilize the bandwidth resources and increase the throughput of the system. .

FIG. 3 is a schematic flow chart of a method for channel availability evaluation of a station according to another embodiment of the present invention. The method of Figure 3 is performed by the site.

301, listening to the channel. The station may listen to each channel of any candidate bandwidth mode (for example, the first candidate bandwidth mode) to obtain interference information on each channel of the first candidate bandwidth mode, where the interference information may include interference power. , interference direction, etc.

302. Determine a transmit power of the first candidate bandwidth mode. The station may first determine the transmit power of the first candidate bandwidth mode for data transmission, and allocate the transmit power to each channel of the first candidate bandwidth mode, to obtain each channel of the first candidate bandwidth mode. Transmit power P_TX{ChannelSet_c}[i]. ChannelSet_c is the set of channels included in the first candidate bandwidth mode. For example, assuming ChannelSet_c = {1, 2}, it means that the first candidate bandwidth mode uses channels 1, 2 for data transmission. P_TX {1, 2} [1] represents the transmission power on channel 1, and P_TX {1, 2} [2] represents the transmission power on channel 2. If the total transmit power when the first candidate bandwidth mode uses data transmission on channels 1 and 2 is P_TX_sum=15 dBm, then when the transmit power is equally distributed to 2 channels, the transmit power on channel 1 is P_TX{1 , 2}[1]=12dBm, the transmission power on channel 2 is P_TX{1, 2}[2]=12dBm.

303. Determine a power backoff value of each channel of the first candidate bandwidth mode. According to the transmission power P_TX{ChannelSet_c}[i] of the data transmitted by the station on each channel i, the power back value P_backoff{ChannelSet_c}[i]=P_max on the channel i when using the first candidate bandwidth mode can be obtained. /P_TX{ChannelSet_c}[i]. Among them, P_max is the maximum transmit power used in the bandwidth mode of 20MHz.

Optionally, as another embodiment, the power backoff value of each channel of the first bandwidth mode may also be obtained according to the minimum required power P_min_req{ChannelSet_c}[i] of each channel of the first bandwidth mode.

P_backoff{ChannelSet_c}[i]=P_max/P_min_req{ChannelSet_c}[i]. The minimum required power P_min_req{ChannelSet_c}[i] may be the minimum power required on the channel i of the first candidate bandwidth mode transmission data preset by the station.

304. Determine a maximum allowed interference power of each channel of the first candidate bandwidth mode. According to the power backoff value of each channel of the first candidate bandwidth mode, each of the first candidate bandwidth modes can be obtained. Maximum allowable interference power for each channel:

305. Determine availability of the first candidate bandwidth mode. The availability of the first candidate bandwidth mode is determined according to the maximum allowed interference power of each channel of the first candidate bandwidth mode and the interference information of each channel of the first candidate bandwidth mode detected by the station. When the interference power of each channel in the first candidate bandwidth mode is smaller than the maximum allowed interference power of the channel in the first candidate bandwidth mode, determining that the first candidate bandwidth mode is available; when the first candidate bandwidth mode is When the interference power of any channel is greater than or equal to the maximum allowed interference power of the any channel of the first candidate bandwidth mode, it is determined that the first candidate bandwidth mode is unavailable.

After traversing all of the bandwidth modes supported by the site in the manner described above, if all of the candidate bandwidth modes are unavailable, then 307 is not available for the bandwidth mode.

After traversing all of the candidate bandwidth modes supported by the site in the manner described above, if there is at least one first candidate bandwidth mode available, then execution 306 has an available first candidate bandwidth mode. The station then performs channel sounding on the available first candidate bandwidth mode. If the first candidate bandwidth mode including the primary channel is detected to be transmitting data, the station performs backoff. Then, 308 is performed to determine whether the backoff is completed. If the backoff is completed, the backoff count value is decreased, and then 309 is selected to select the optimal bandwidth mode to transmit data, and finally the station 310 and the peer device use the optimal bandwidth mode for data transmission. If the backoff is not completed, continue to listen during the next unit listening period, and then judge whether the backoff is completed according to the interception result.

FIG. 4 is a schematic flowchart of a method for determining a bandwidth mode of a station according to still another embodiment of the present invention. The method of Figure 4 is performed by the site.

401, listening to the channel. The station may listen to each channel of any candidate bandwidth mode (for example, the first candidate bandwidth mode) to obtain interference information on each channel of the first candidate bandwidth mode, where the interference information may include interference power. Information such as the direction of interference.

402. Determine a power backoff value of each channel of the first candidate bandwidth mode. The station may obtain the power backoff value of each channel of the first candidate bandwidth mode according to the interference power of each channel of the first candidate bandwidth mode:

P_backoff{ChannelSet_c}[i]

=I_CS{ChannelSet_c}[i]/I_CS_allowed{ChannelSet_c}[i],

Where I_CS{ChannelSet_c}[i] is the interference power on channel i of the first candidate bandwidth mode detected by the station, and I_CS_allowed{ChannelSet_c}[i] is the maximum allowed on channel i of the first candidate bandwidth mode. Listen for interference power.

403. Determine a maximum allowed transmit power of each channel of the first candidate bandwidth mode. According to the power backoff value on each channel of the first candidate bandwidth mode, the maximum allowed transmit power on each channel of the first wide mode can be obtained: P_TX_premit{ChannelSet_c}[i]=P_TX/P_backoff{ChannelSet_c}[ i]

404. Predict a transmission capacity of the first candidate bandwidth mode. The station may allocate the transmit power to the multiple channels according to the maximum allowed transmit power on the channel i of the first candidate bandwidth mode and the interference power on the channel i of the first candidate bandwidth mode, and may predict the first candidate to be selected. Bandwidth mode transmission capacity R{ChannelSet_c}. The transmission capacity R can be the Resource Block Information Rate (RBIR)/Mean Mutual Information per Bit (MMIB)/Efficient Index Signal to Noise Ratio Mapping (English: Effective) The capacity estimation method such as Exponential Signal-to-noise-ratio Mapping (EESM) is obtained.

405. Determine availability of the first candidate bandwidth mode. The station may first determine a predetermined minimum transmission capacity corresponding to the first candidate bandwidth mode. When the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required capacity corresponding to the first candidate bandwidth mode, determining that the first candidate bandwidth mode is unavailable; when the transmission capacity of the first candidate bandwidth mode is greater than the When the minimum required capacity corresponding to the first candidate bandwidth mode is determined, it is determined that the first candidate bandwidth mode is available.

After traversing all of the candidate bandwidth modes supported by the site in the manner described above, if all of the candidate bandwidth modes are unavailable, then 407 has no available bandwidth mode.

After traversing all of the bandwidth modes performed by the site in the manner described above, if at least one first candidate bandwidth mode is available, then execution 406 has an available bandwidth mode. The station performs channel sensing on the available first candidate bandwidth mode. If the first candidate bandwidth mode including the primary channel is being transmitted, the station performs backoff, and then performs 408 to determine whether the backoff is completed, if the backoff is performed. Upon completion, the backoff count value is reduced, then 409 is selected to select the optimal bandwidth mode to transmit data, and finally 410 sites and the peer device are used to perform data transmission using the optimal bandwidth mode. If the backoff is not completed, continue to listen during the next unit listening period, and then judge whether to withdraw based on the listening result. carry out.

The method for channel availability evaluation of a station according to an embodiment of the present invention is described in detail above with reference to FIG. 2 to FIG. 4, and a channel availability according to an embodiment of the present invention will be described from the perspective of a station in conjunction with FIG. 5. The site of the assessment.

Figure 5 is a schematic block diagram of a site for channel availability assessment in accordance with an embodiment of the present invention. One example of the apparatus 50 of FIG. 5 is a station (STA) including a first determining unit 51, a second determining unit 52, a third determining unit 53, a fourth determining unit 54, and a fifth determining unit 55.

The first determining unit 51 is configured to determine at least one first bandwidth mode supported by the station that needs to perform data transmission and at least one second bandwidth mode supported by the peer device of the data transmission.

The second determining unit 52 is configured to determine, according to the at least one first bandwidth mode and the at least one second bandwidth mode, at least one candidate bandwidth mode for the data transmission.

The third determining unit 53 is configured to determine a threshold of the availability determination parameter of the first candidate bandwidth mode and the threshold of the availability determination parameter, where the first candidate bandwidth mode is any one of the at least one candidate bandwidth mode.

The fourth determining unit 54 is configured to determine the availability of the first candidate bandwidth mode according to the availability determination parameter determined by the third determining unit and a threshold corresponding to the availability determining parameter.

The fifth determining unit 55 is configured to determine, according to the available first candidate bandwidth mode determined by the fourth determining unit, a bandwidth mode adopted by the station and the peer device for data transmission.

In the embodiment of the present invention, when the channel availability evaluation of the site is performed, the availability judgment is performed using a threshold corresponding to the bandwidth mode of the site, instead of relying solely on the bandwidth of the site where the data transmission has been established, so that the established data transmission can be avoided as much as possible. Over-protection of bandwidth, sites that need to transmit data can make reasonable use of bandwidth resources and increase system throughput.

The various units of the apparatus 50 of FIG. 5 may perform the various processes of the methods illustrated in FIGS. 2, 3, and 4, and are not described in detail to avoid redundancy.

Optionally, in an embodiment of the present invention, the third determining unit 53 is specifically configured to: listen to each channel of the first candidate bandwidth mode to obtain each channel of the first candidate bandwidth mode. Interference power, and determining a maximum allowed interference power of each channel in the first candidate bandwidth mode; wherein the availability determination parameter is interference power of each channel of the first candidate bandwidth mode, the availability determination parameter The corresponding threshold is the maximum allowed interference power of each channel of the first candidate bandwidth mode.

Optionally, in an embodiment of the present invention, the fourth determining unit 54 is specifically configured to be used as the first Determining that the first candidate bandwidth mode is available when the interference power of each channel of the candidate bandwidth mode is less than the maximum allowed interference power of each channel of the first candidate bandwidth mode; or, when the first When the interference power of any channel of a candidate bandwidth mode is greater than or equal to the maximum allowed interference power of the any channel, it is determined that the first candidate bandwidth mode is unavailable.

Optionally, in an embodiment of the present invention, the third determining unit 53 is specifically configured to allocate, according to the transmit power of the data transmission, the transmit power of the data transmission to each channel of the first candidate bandwidth mode. And obtaining a transmit power of each channel in the first candidate bandwidth mode, and determining a power backoff value of each channel in the first candidate bandwidth mode according to the transmit power of each channel in the first candidate bandwidth mode. And determining, according to the power backoff value of each channel of the first candidate bandwidth mode, a maximum allowed interference power of each channel of the first candidate bandwidth mode.

Optionally, in an embodiment of the present invention, the third determining unit 53 is specifically configured to obtain a minimum required power of each channel of the first candidate bandwidth mode, and each channel according to the first candidate bandwidth mode. a minimum required power, determining a power backoff value of each channel of the first candidate bandwidth mode, and determining the first candidate to be selected according to a power backoff value of each channel of the first candidate bandwidth mode The maximum allowed interference power for each channel of the bandwidth mode.

Optionally, in an embodiment of the present invention, the third determining unit 53 is specifically configured to: listen to each channel of the first candidate bandwidth mode, and determine each channel of the first candidate bandwidth mode. Interference power, determining, according to the interference power of each channel of the first candidate bandwidth mode, a maximum allowed transmit power of each channel of the first candidate bandwidth mode, and transmitting the transmit power of the data according to the station, The interference power of each channel of the first candidate bandwidth mode and the maximum allowed transmission power of each channel of the first candidate bandwidth mode determine a transmission capacity of the first candidate bandwidth mode; wherein the availability determination parameter is The transmission capacity of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a minimum required transmission capacity corresponding to the first candidate bandwidth mode preset by the station.

Optionally, in an embodiment of the present invention, the fourth determining unit 54 is specifically configured to: when the transmission capacity of the first candidate bandwidth mode is greater than a minimum required transmission capacity corresponding to the first candidate bandwidth mode, The first candidate bandwidth mode is available; or, when the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required transmission capacity corresponding to the first candidate bandwidth mode, determining that the first candidate bandwidth mode is unavailable use.

Optionally, in an embodiment of the present invention, the third determining unit 53 is specifically configured to determine, according to the modulation and coding mechanism of the first candidate bandwidth mode transmission data, the error of the first candidate bandwidth mode. a packet rate, wherein the availability determination parameter is a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a maximum allowed packet error corresponding to the first candidate bandwidth mode preset by the site. rate.

Optionally, in an embodiment of the present invention, the fourth determining unit 54 is specifically configured to: when the packet error rate of the first candidate bandwidth mode is smaller than the maximum allowed corresponding to the first candidate bandwidth mode. When the packet error rate is determined, determining that the first candidate bandwidth mode is available; or, when the packet error rate of the first candidate bandwidth mode is greater than or equal to a maximum allowed packet error rate corresponding to the first candidate bandwidth mode, It is determined that the first candidate bandwidth mode is unavailable.

Optionally, in an embodiment of the present invention, the fifth determining unit 55 is specifically configured to: according to the interference power of each channel of the first candidate bandwidth mode and the transmit power of the data transmitted by the station, or according to the Determining the interference power of each channel of the first candidate bandwidth mode, the transmission power of the data transmitted by the station, and the transmission direction of the antenna system, determining a performance index of at least one of the first candidate bandwidth modes available, and according to the performance The index determines a bandwidth mode adopted by the station and the peer device for the data transmission; wherein the performance index includes at least one of the following parameters: a transmission bandwidth, a transmission capacity, a transmission energy consumption, and a packet error rate.

Optionally, in an embodiment of the present invention, the at least one candidate bandwidth mode is an intersection of at least a first bandwidth mode and at least one second bandwidth mode.

It should be understood that the station of the channel usability evaluation according to the embodiment of the present invention in FIG. 5 may correspond to the corresponding subject in the method of performing the usability evaluation of the channel according to the embodiment of the present invention in FIGS. 2 to 4, and each of FIG. The above and other operations and/or functions of the unit or module are respectively omitted in order to implement the corresponding processes of the methods in FIG. 2 to FIG. 4 for brevity.

6 is a schematic block diagram of a site for channel availability assessment in accordance with another embodiment of the present invention. The station 600 of FIG. 6 can be used to implement the steps and methods of the above method embodiments. The station 600 of FIG. 6 includes a processor 610, a memory 620, a receiving circuit 630, and a transmitting circuit 640. The processor 610, the memory 620, the receiving circuit 630, and the transmitting circuit 640 are connected by a bus system 660.

Further, the station 600 may also include an antenna 650 or the like. Memory 620 can include read only memory and random access memory for storing instructions and providing instructions and data to processor 610. The processor 610 controls the operation of the station 600 for executing instructions stored by the memory 620 to control the receiver 630 to receive signals. A portion of the memory 620 may also include non-volatile line random access memory (NVRAM for short). In a particular application, transmit circuitry 640 and receive circuitry 630 can be coupled to antenna 650. The various components of the station 600 are coupled together by a bus system 660, wherein In addition to the data bus, bus system 660 includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 660 in the figure.

Processor 610 may be an integrated circuit chip with signal processing capabilities. The processor 510 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device. , separate hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. Processor 610 reads the information in memory 620 in conjunction with its hardware to control various components of site 600.

The method 600 of FIG. 6 can implement the methods of FIGS. 2, 3, and 4, and will not be described in detail in order to avoid redundancy.

Specifically, under the control of processor 610, station 600 does the following:

Determining at least one first bandwidth mode supported by the station requiring data transmission and at least one second bandwidth mode supported by the peer device of the data transmission.

Determining at least one candidate bandwidth mode for the data transmission based on the at least one first bandwidth mode and the at least one second bandwidth mode.

And determining, by the availability determination parameter of the first candidate bandwidth mode, a threshold corresponding to the availability determination parameter, where the first candidate bandwidth mode is any one of at least one candidate bandwidth mode.

The availability of the first candidate bandwidth mode is determined according to the availability determination parameter and the threshold corresponding to the availability determination parameter.

The bandwidth mode adopted by the station and the peer device for data transmission is determined according to the available first candidate bandwidth mode.

When performing channel availability evaluation on a site, the embodiment of the present invention uses the threshold corresponding to the bandwidth mode of the site to perform availability judgment, and not only depends on the bandwidth of the site where the data transmission has been established, so that the established data can be avoided as much as possible. Over-protection of the transmitted bandwidth, the site that needs to transmit data can make reasonable use of bandwidth resources and increase the throughput of the system.

Optionally, as an embodiment, the processor 610 may listen to each channel of the first candidate bandwidth mode, obtain interference power of each channel of the first candidate bandwidth mode, and determine the first The maximum allowable interference power of each channel in the candidate bandwidth mode; wherein the availability determination parameter is the interference power of each channel of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the first to-be The maximum allowed interference power for each channel of the bandwidth mode is selected.

Optionally, in another embodiment, the processor 610 may: when the interference power of each channel of the first candidate bandwidth mode is less than the maximum allowed interference power of each channel of the first candidate bandwidth mode, Determining that the first candidate bandwidth mode is available; or determining that the first candidate is selected when the interference power of any channel of the first candidate bandwidth mode is greater than or equal to the maximum allowed interference power of the any channel. Bandwidth mode is not available.

Optionally, as another embodiment, the processor 610 may allocate, according to the transmit power of the data transmission, the transmit power of the data transmission to each channel of the first candidate bandwidth mode, to obtain the first candidate. Determining, according to the transmit power of each channel of the first candidate bandwidth mode, a power backoff value of each channel of the first candidate bandwidth mode, according to the first waiting The power backoff value of each channel of the bandwidth mode is selected, and the maximum allowed interference power of each channel of the first candidate bandwidth mode is determined.

Optionally, as another embodiment, the processor 610 may obtain a minimum required power of each channel of the first candidate bandwidth mode, and determine the minimum required power of each channel of the first candidate bandwidth mode. Determining a power backoff value of each channel of the first candidate bandwidth mode, and determining, according to a power backoff value of each channel of the first candidate bandwidth mode, each channel of the first candidate bandwidth mode Maximum allowable interference power.

Optionally, as another embodiment, the processor 610 may listen to each channel of the first candidate bandwidth mode, and determine interference power of each channel of the first candidate bandwidth mode, according to the first The interference power of each channel of the candidate bandwidth mode determines the maximum allowed transmit power of each channel of the first candidate bandwidth mode, and transmits the transmit power of the data according to the station, the first candidate bandwidth mode. Determining the transmission capacity of the first candidate bandwidth mode by the interference power of each channel and the maximum allowed transmission power of each channel of the first candidate bandwidth mode; wherein the availability determination parameter is the first candidate bandwidth mode The transmission capacity, the threshold corresponding to the availability determination parameter is a minimum required transmission capacity corresponding to the first candidate bandwidth mode preset by the station.

Optionally, in another embodiment, the processor 610 may determine the first candidate bandwidth mode when a transmission capacity of the first candidate bandwidth mode is greater than a minimum required transmission capacity corresponding to the first candidate bandwidth mode. The first candidate bandwidth mode is determined to be unavailable when the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required transmission capacity corresponding to the first candidate bandwidth mode.

Optionally, in another embodiment, the processor 610 may determine, according to the modulation and coding mechanism of the first candidate bandwidth mode transmission data, a packet error rate of the first candidate bandwidth mode; wherein the availability The determining parameter is a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determining parameter is a maximum allowed packet error rate corresponding to the first candidate bandwidth mode preset by the station.

Optionally, as another embodiment, the processor 610 may determine, when the packet error rate of the first candidate bandwidth mode is less than the maximum allowed packet error rate corresponding to the first candidate bandwidth mode. The first candidate bandwidth mode is available; or, when the packet error rate of the first candidate bandwidth mode is greater than or equal to a maximum allowed packet error rate corresponding to the first candidate bandwidth mode, determining the first candidate bandwidth. Mode is not available.

Optionally, in another embodiment, the processor 610 may: according to the interference power of each channel of the first candidate bandwidth mode and the transmit power of the data transmitted by the station, or according to the first candidate bandwidth mode. Determining the interference power of each channel, the transmission power of the data transmitted by the station, and the transmission direction of the antenna system, determining a performance index of at least one of the first candidate bandwidth modes available, and determining the site and the pair according to the performance index The bandwidth mode adopted by the end device for the data transmission; wherein the performance index includes at least one of the following parameters: a transmission bandwidth, a transmission capacity, a transmission energy consumption, and a packet error rate.

It should be understood that, in the embodiment of the present invention, the processor 610 may be a central processing unit (English: Central Processing Unit, CPU for short), and the processor 610 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 620 can include read only memory and random access memory and provides instructions and data to the processor 610. A portion of the memory 620 can also include a non-volatile random access memory. For example, the memory 620 can also store information of the device type.

The bus system 660 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 660 in the figure.

In the implementation process, each step of the above method may be integrated by hardware in the processor 610. The logic circuit or the instruction in the form of software is completed. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 620, and the processor 610 reads the information in the memory 620 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. It should be understood that the serial numbers of the various steps in the process do not constitute a limitation or limitation of the chronological order of the steps.

The processor controls the operation of the communication device, which may also be referred to as a CPU. The memory can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include non-volatile line random access memory (NVRAM). In a particular application, the communication device can embed or itself be a wireless communication device such as a mobile telephone, and can also include a carrier that houses the transmitting circuitry and the receiving circuitry to allow for data transmission and reception between the communications device and the remote location. The transmit and receive circuits can be coupled to the antenna. The various components of the communication device are coupled together by a bus (which may also be referred to as a bus system), wherein the bus includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, various buses are labeled as buses in the figure. The communication device may also include a processing unit for processing signals, and further includes a power controller, a decoding processor. The decoder in a specific different product may be integrated with the processing unit.

The processor may implement or perform the steps and logic blocks disclosed in the method embodiments of the present invention. The processor can be a microprocessor or the processor can be any conventional processor, decoder or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the decoding unit or the processing unit reads the information in the memory, and completes the steps of the above method in combination with the hardware thereof.

It should be understood that, in the embodiment of the present invention, the processor may be a central processing unit (English: Central Processing Unit, CPU for short), and the processor may also be other general-purpose processors. Digital signal processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

It should be understood that in the embodiment of the present invention, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

Additionally, the terms "system" and "network" are used interchangeably herein. It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

It will be understood by those skilled in the art that all or part of the steps in implementing the above method embodiments may be completed by a program instructing related hardware, and the program may be stored in a computer readable storage medium, and the program is executed. The content of each embodiment of the communication method based on the MIP technology of the present invention may be included. The storage medium referred to herein is, for example, a ROM/RAM, a magnetic disk, an optical disk, or the like.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a magnetic disk or an optical disk, and the like. A variety of media that can store program code.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the protection of the present invention The scope should be determined by the scope of the claims.

Claims

A method for channel availability assessment of a station, comprising:

Determining at least one first bandwidth mode supported by the station that needs to perform data transmission and at least one second bandwidth mode supported by the peer device of the data transmission;

Determining at least one candidate bandwidth mode for the data transmission according to the at least one first bandwidth mode and the at least one second bandwidth mode;

Determining, by the availability determination parameter of the first candidate bandwidth mode, a threshold corresponding to the availability determination parameter, where the first candidate bandwidth mode is any one of the at least one candidate bandwidth mode;

Determining the availability of the first candidate bandwidth mode according to the threshold of the availability determination parameter and the availability determination parameter;

Determining, according to the available first candidate bandwidth mode, a bandwidth mode adopted by the station and the peer device for performing the data transmission.
The method according to claim 1, wherein the determining the threshold of the availability determination parameter of the first candidate bandwidth mode and the availability determination parameter comprises:

Listening to each channel of the first candidate bandwidth mode to obtain interference power of each channel of the first candidate bandwidth mode;

Determining a maximum allowed interference power of each channel of the first candidate bandwidth mode;

The availability determination parameter is the interference power of each channel in the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the maximum allowed interference power of each channel in the first candidate bandwidth mode. .
The method according to claim 2, wherein determining the availability of the first candidate bandwidth mode according to the threshold corresponding to the availability determination parameter and the availability determination parameter comprises:

Determining that the first candidate bandwidth mode is available when the interference power of each channel of the first candidate bandwidth mode is less than the maximum allowed interference power of each channel of the first candidate bandwidth mode;

When the interference power of any channel of the first candidate bandwidth mode is greater than or equal to the maximum allowed interference power of any of the channels, determining that the first candidate bandwidth mode is unavailable.
The method according to claim 2 or 3, wherein said determining said first waiting The maximum allowable interference power for each channel in the selected bandwidth mode includes:

And transmitting, according to the transmit power of the data transmission, the transmit power of the data transmission to each channel of the first candidate bandwidth mode, to obtain the transmit power of each channel of the first candidate bandwidth mode;

Determining, according to a transmit power of each channel of the first candidate bandwidth mode, a power backoff value of each channel of the first candidate bandwidth mode;

Determining a maximum allowed interference power of each channel of the first candidate bandwidth mode according to a power backoff value of each channel of the first candidate bandwidth mode.
The method according to claim 2 or 3, wherein the determining the maximum allowed interference power of each channel of the first candidate bandwidth mode comprises:

Obtaining a minimum required power of each channel of the first candidate bandwidth mode;

Determining, according to a minimum required power of each channel of the first candidate bandwidth mode, a power backoff value of each channel of the first candidate bandwidth mode;

Determining a maximum allowed interference power of each channel of the first candidate bandwidth mode according to a power backoff value of each channel of the first candidate bandwidth mode.
The method according to claim 1, wherein the determining the threshold of the availability determination parameter of the first candidate bandwidth mode and the availability determination parameter comprises:

Listening to each channel of the first candidate bandwidth mode to obtain interference power of each channel of the first candidate bandwidth mode;

Determining, according to interference power of each channel of the first candidate bandwidth mode, a maximum allowed transmit power of each channel of the first candidate bandwidth mode;

Determining the first to-be-served according to a transmit power of the station transmission data, an interference power of each channel of the first candidate bandwidth mode, and a maximum allowed transmit power of each channel of the first candidate bandwidth mode. Select the transmission capacity of the bandwidth mode;

The availability determination parameter is a transmission capacity of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a minimum required transmission capacity corresponding to the first candidate bandwidth mode preset by the station. .
The method according to claim 6, wherein the determining the availability of the first candidate bandwidth mode according to the threshold corresponding to the availability determination parameter and the availability determination parameter comprises:

When the transmission capacity of the first candidate bandwidth mode is greater than the first candidate bandwidth mode Determining that the first candidate bandwidth mode is available when the minimum required transmission capacity is corresponding;

When the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required transmission capacity corresponding to the first candidate bandwidth mode, determining that the first candidate bandwidth mode is unavailable.
The method according to claim 1, wherein the determining the threshold of the availability determination parameter of the first candidate bandwidth mode and the availability determination parameter comprises:

Determining, according to the modulation and coding mechanism of the first candidate bandwidth mode transmission data, a packet error rate of the first candidate bandwidth mode;

The availability determination parameter is a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a maximum allowed by the station corresponding to the first candidate bandwidth mode. Packet error rate.
The method according to claim 8, wherein the determining the availability of the first candidate bandwidth mode according to the threshold corresponding to the availability determination parameter and the availability determination parameter comprises:

Determining that the first candidate bandwidth mode is available when the packet error rate of the first candidate bandwidth mode is less than the maximum allowed packet error rate corresponding to the first candidate bandwidth mode;

When the packet error rate of the first candidate bandwidth mode is greater than or equal to the maximum allowed packet error rate corresponding to the first candidate bandwidth mode, determining that the first candidate bandwidth mode is unavailable.
The method according to any one of claims 1 to 9, wherein the determining, according to the available first candidate bandwidth mode, the bandwidth mode adopted by the station and the peer device for performing the data transmission comprises: :

The interference power of each channel according to the first candidate bandwidth mode and the transmission power of the data transmitted by the station, or the interference power of each channel according to the first candidate bandwidth mode, the site Transmitting a transmit power of the data and a transmit direction of the antenna system to determine a performance index of at least one of the first candidate bandwidth modes available;

Determining, according to the performance index, a bandwidth mode used by the site and the peer device to perform the data transmission;

The performance index includes at least one of the following parameters: transmission bandwidth, transmission capacity, transmission energy consumption, and packet error rate.
The method according to any one of claims 1 to 10, wherein the at least one candidate bandwidth mode is an intersection of the at least one first bandwidth mode and the at least one second bandwidth mode.
An apparatus for determining a channel availability assessment of a station, comprising:

a first determining unit, configured to determine at least one first bandwidth mode supported by a station that needs to perform data transmission, and at least one second bandwidth mode supported by the peer device of the data transmission;

a second determining unit, configured to determine, according to the at least one first bandwidth mode and the at least one second bandwidth mode determined by the first determining unit, at least one candidate bandwidth mode for the data transmission;

a third determining unit, configured to determine a threshold of a first candidate bandwidth mode and a threshold corresponding to the availability determining parameter, where the first candidate bandwidth mode is any one of the at least one candidate bandwidth mode;

a fourth determining unit, configured to determine, according to the availability determination parameter determined by the third determining unit and a threshold corresponding to the availability determining parameter, the availability of the first candidate bandwidth mode;

And a fifth determining unit, configured to determine, according to the available first candidate bandwidth mode determined by the fourth determining unit, a bandwidth mode adopted by the station and the peer device for performing the data transmission.
The apparatus according to claim 12, wherein the third determining unit is configured to listen to each channel of the first candidate bandwidth mode, and obtain each of the first candidate bandwidth modes. Interference power of the channels, and determining a maximum allowed interference power of each channel in the first candidate bandwidth mode;

The availability determination parameter is the interference power of each channel in the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is the maximum allowed interference power of each channel in the first candidate bandwidth mode. .
The apparatus according to claim 13, wherein the fourth determining unit is configured to: when each channel of the first candidate bandwidth mode has less interference power than each of the first candidate bandwidth modes Determining that the first candidate bandwidth mode is available when the maximum allowed interference power of the channels is; or, when the interference power of any channel of the first candidate bandwidth mode is greater than or equal to the any channel When the maximum allowed interference power is determined, it is determined that the first candidate bandwidth mode is unavailable.
The apparatus according to claim 13 or 14, wherein the third determining unit is specifically configured to evenly distribute the transmit power of the data transmission to the first according to the transmit power of the data transmission. Determining the transmit power of each channel of the first candidate bandwidth mode for each channel of the candidate bandwidth mode, and determining the first candidate to be selected according to the transmit power of each channel of the first candidate bandwidth mode The power backoff value of each channel of the bandwidth mode, and according to the first candidate to be selected A power backoff value of each channel of the bandwidth mode determines a maximum allowed interference power of each channel of the first candidate bandwidth mode.
The device according to claim 13 or 14, wherein the third determining unit is configured to acquire a minimum required power of each channel of the first candidate bandwidth mode, according to the first candidate bandwidth. a minimum required power of each channel of the mode, determining a power backoff value of each channel of the first candidate bandwidth mode, and determining a power backoff value of each channel according to the first candidate bandwidth mode Determining a maximum allowed interference power for each channel of the first candidate bandwidth mode.
The apparatus according to claim 12, wherein the third determining unit is configured to listen to each channel of the first candidate bandwidth mode, and determine each of the first candidate bandwidth modes. The interference power of the channels, determining the maximum allowed transmit power of each channel of the first candidate bandwidth mode according to the interference power of each channel of the first candidate bandwidth mode, and transmitting according to the station The transmission power of the data, the interference power of each channel of the first candidate bandwidth mode, and the maximum allowed transmission power of each channel of the first candidate bandwidth mode determine transmission of the first candidate bandwidth mode capacity;

The availability determination parameter is a transmission capacity of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a minimum required transmission capacity corresponding to the first candidate bandwidth mode preset by the station. .
The apparatus according to claim 17, wherein the fourth determining unit is specifically configured to: when a transmission capacity of the first candidate bandwidth mode is greater than a minimum requirement corresponding to the first candidate bandwidth mode Determining, when the capacity is transmitted, that the first candidate bandwidth mode is available; or, when the transmission capacity of the first candidate bandwidth mode is less than or equal to the minimum required transmission capacity corresponding to the first candidate bandwidth mode; And determining that the first candidate bandwidth mode is unavailable.
The apparatus according to claim 12, wherein the third determining unit is configured to determine a packet error rate of the first candidate bandwidth mode according to a modulation and coding mechanism of the first candidate bandwidth mode transmission data. ;

The availability determination parameter is a packet error rate of the first candidate bandwidth mode, and the threshold corresponding to the availability determination parameter is a maximum allowed by the station corresponding to the first candidate bandwidth mode. Packet error rate.
The apparatus according to claim 19, wherein the fourth determining unit is specifically configured to: when a packet error rate of the first candidate bandwidth mode is smaller than a maximum corresponding to the first candidate bandwidth mode Determining the first packet bandwidth mode is available; or The first candidate bandwidth mode is determined to be unavailable when the packet error rate of the first candidate bandwidth mode is greater than or equal to the maximum allowed packet error rate corresponding to the first candidate bandwidth mode.
The apparatus according to any one of claims 12 to 20, wherein the fifth determining unit is specifically configured to use interference power of each channel according to the first candidate bandwidth mode and the station transmission station. Determining the transmit power of the data, or determining, according to the interference power of each channel of the first candidate bandwidth mode, the transmit power of the station transmitting the data, and the transmit direction of the antenna system, determining at least one of the available a performance index of the candidate bandwidth mode, and determining, according to the performance index, a bandwidth mode used by the station and the peer device to perform the data transmission;

The performance index includes at least one of the following parameters: transmission bandwidth, transmission capacity, transmission energy consumption, and packet error rate.
The apparatus of any one of claims 12 to 21, wherein the at least one candidate bandwidth mode is an intersection of the at least one first bandwidth mode and the at least one second bandwidth mode.