Channel control method, communication device and communication system

Abstract

The embodiments of the present disclosure relate to a channel control method, a communication device and a communication system. The channel control method comprises: when sensing that a primary channel is busy, a first device sensing a channel state of a secondary channel, wherein the channel state includes idle or busy; and on the basis of the channel state of the secondary channel, determining a processing operation on a random backoff window of the primary channel and / or other secondary channels. A first device senses a channel state of a secondary channel, and then determines a processing operation on a random backoff window of a primary channel and / or other secondary channels on the basis of the channel state of the secondary channel, wherein the processing operation is, for example, maintaining the count of the random backoff window, or generating a new random backoff number; and on the basis of the channel state of the secondary channel, the processing operation on the random backoff window of the primary channel and / or other secondary channels is made clear, and the communication mechanism of a WLAN device in the primary channel and the secondary channel is improved, so as to meet the requirements for UHR transmission.

Description

Channel control method, communication device and communication system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a channel control method, communication equipment, and communication system. Background Art

[0002] Currently, Wi-Fi technology research focuses on Ultra High Reliability (UHR), with the goal of improving the reliability of Wireless Local Area Networks (WLAN) connections, reducing latency, improving manageability, increasing throughput at different signal-to-noise ratio (SNR) levels, and reducing device-level power consumption.

[0003] In UHR, in order to fully utilize channel resources and support WLAN devices to communicate on secondary channels, it is necessary to further improve the communication mechanism of WLAN devices on primary and secondary channels to meet the transmission requirements of UHR.

[0004] Summary of the Invention

[0005] The embodiments of the present disclosure provide a channel control method, a communication device, and a communication system to further improve the mechanism of WLAN devices in primary and secondary channels.

[0006] In one aspect, an embodiment of the present disclosure provides a channel control method, the method comprising:

[0007] The first device senses that the primary channel is busy and senses a channel state of the secondary channel; wherein the channel state includes idle or busy;

[0008] According to the channel status of the secondary channel, a processing operation of the random backoff window of the primary channel and / or other secondary channels is determined.

[0009] On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, and the communication device includes:

[0010] A sensing module, configured for the first device to sense that the primary channel is busy and sense the channel status of the secondary channel; wherein the channel status includes idle or busy;

[0011] The determining module is configured to determine a processing operation for the random backoff window of the primary channel and / or other secondary channels according to the channel status of the secondary channel.

[0012] On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, including:

[0013] one or more processors;

[0014] The communication device is used to execute the channel control method described in the embodiment of the present disclosure.

[0015] An embodiment of the present disclosure further provides a communication system, including a communication device; wherein the communication device is configured to implement the channel control method described in the embodiment of the present disclosure.

[0016] The embodiment of the present disclosure further provides a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the channel control method as described in the embodiment of the present disclosure.

[0017] In an embodiment of the present disclosure, after the first device senses the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.

[0018] Additional aspects and advantages of the embodiments of the present disclosure will be given in part in the following description, which will become apparent from the following description or be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0020] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0021] FIG2 is a flow chart of a channel control method according to an embodiment of the present disclosure;

[0022] FIG3 is one of the exemplary schematic diagrams provided by an embodiment of the present disclosure;

[0023] FIG4 is a second exemplary schematic diagram provided by an embodiment of the present disclosure;

[0024] FIG5 is a second flow chart of the channel control method provided in an embodiment of the present disclosure;

[0025] FIG6 is a third flow chart of the channel control method provided in an embodiment of the present disclosure;

[0026] FIG7 is a fourth flow chart of the channel control method provided in an embodiment of the present disclosure;

[0027] FIG8 is a fifth flow chart of the channel control method provided in an embodiment of the present disclosure;

[0028] FIG9 is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure;

[0029] FIG10 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] The embodiments of the present disclosure provide a channel control method, a communication device, and a communication system.

[0031] In a first aspect, an embodiment of the present disclosure provides a channel control method, the method comprising:

[0032] The first device senses that the primary channel is busy and senses a channel state of the secondary channel; wherein the channel state includes idle or busy;

[0033] According to the channel status of the secondary channel, a processing operation of the random backoff window of the primary channel and / or other secondary channels is determined.

[0034] In the above embodiment, the first device senses that the main channel is busy and senses the channel status of the secondary channel; after the first device senses the channel status of the secondary channel, the first device determines the processing operation of the random backoff window of the main channel and / or other secondary channels according to the channel status of the secondary channel; the processing operation is, for example, maintaining the count of the random backoff exposure, or generating a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is clarified, and the communication mechanism of the WLAN device on the main and secondary channels is improved to meet the transmission requirements of the UHR.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, the first device senses that the primary channel is busy, including:

[0036] The first device senses that the primary channel is busy, performs a random backoff operation, and generates a random backoff number and a NAV timer for the primary channel.

[0037] In the above embodiment, the first device senses that the primary channel is busy and performs a random backoff operation in a timely manner.

[0038] In conjunction with some embodiments of the first aspect, in some embodiments, sensing the channel state of the secondary channel includes:

[0039] The secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.

[0040] In the above embodiment, the order of sensing in the secondary channels is defined to improve the processing operation of the random backoff window of the primary channel and / or other secondary channels.

[0041] With reference to some embodiments of the first aspect, in some embodiments, sequentially sensing the secondary channels includes:

[0042] Performing time-sharing sensing on each of the secondary channels in turn according to a preset secondary channel sequence number;

[0043] The NAV timer of the secondary channel is 0, the random backoff number counting is completed, and the channel state of the secondary channel is sensed again.

[0044] In the above embodiment, a specific implementation method of sequence perception is provided.

[0045] In conjunction with some embodiments of the first aspect, in some embodiments, determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and / or other secondary channels includes:

[0046] If the Nth secondary channel is busy, a random backoff number is generated for the Nth secondary channel; and before transmitting data, the random backoff number is counted in the primary channel, the N-1th secondary channel, and the Nth secondary channel at the same time; and according to the duration setting of the NAV timer in each channel, the count is performed and a new random backoff number is generated.

[0047] If the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff counts in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff counts in the primary channel and the NAV timer count of the primary channel are maintained.

[0048] In the above embodiment, the processing operation of determining the random backoff window for the primary channel and / or other secondary channels is implemented according to the channel status of the secondary channel.

[0049] With reference to some embodiments of the first aspect, in some embodiments, the simultaneously sensing the secondary channels includes:

[0050] Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.

[0051] In the above embodiment, a specific implementation method of simultaneous perception is provided.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and / or other secondary channels includes:

[0053] If the first channel is idle, data is transmitted on the first channel, the NAV timers of the primary channel and other secondary channels are set to 0, and / or the random backoff counts of the primary channel and other secondary channels are maintained;

[0054] If all the secondary channels are busy, sensing is continued on the channel with the smallest random backoff number and / or the NAV timer count is 0.

[0055] In the above embodiment, the processing operation of determining the random backoff window for the primary channel and / or other secondary channels is implemented according to the channel status of the secondary channel.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the EDCA access parameter of the secondary channel is the same as the EDCA access parameter of the primary channel.

[0057] In a second aspect, an embodiment of the present disclosure further provides a communication device, which is a first device, and includes at least one of a determination module and a sending module; wherein the communication device is used to execute an optional implementation method of the first aspect.

[0058] In a third aspect, an embodiment of the present disclosure further provides a B device, comprising: a first receiving module; wherein the above-mentioned B device is used to execute the optional implementation method of the second aspect.

[0059] In a fourth aspect, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, including:

[0060] one or more processors;

[0061] The communication device is used to execute the optional implementation of the first aspect.

[0062] In a fifth aspect, an embodiment of the present disclosure further provides a B device, including:

[0063] one or more processors;

[0064] The B device is used to execute the optional implementation of the second aspect.

[0065] In a sixth aspect, an embodiment of the present disclosure further provides a communication system, comprising a communication device; wherein the communication device is configured to perform the optional implementation method described in the first aspect, and the B device is configured to perform the optional implementation method described in the second aspect.

[0066] On the seventh aspect, an embodiment of the present disclosure further provides a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the optional implementation method described in the first aspect.

[0067] In an eighth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of the first aspect.

[0068] In a ninth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation manner of the first aspect.

[0069] In a tenth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first aspect.

[0070] It is understandable that the above-mentioned communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0071] The embodiments of the present disclosure provide a channel control method, a communication device, and a communication system. In some embodiments, the terms channel control method, signal transmission method, wireless frame transmission method, etc. can be used interchangeably, and the terms information processing system, communication system, etc. can be used interchangeably.

[0072] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0073] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0074] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0075] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0076] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0077] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0078] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0079] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0080] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0081] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0082] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0083] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0084] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0085] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0086] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0087] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0088] As shown in Figure 1, a communication system 100 includes communication devices, which may be station devices (STA) 101 and access point devices (AP) 102. For ease of description, the communication device is taken as the first device in the following examples.

[0089] In some embodiments, the site device 101 includes, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports WiFi communication. Optionally, the wireless communication terminal includes, but is not limited to, at least one of a mobile phone, a wearable device, an Internet of Things device that supports WiFi communication, a car with WiFi communication, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device used in industrial control, a wireless terminal device used in self-driving, a wireless terminal device used in remote medical surgery, a wireless terminal device used in a smart grid, a wireless terminal device used in transportation safety, a wireless terminal device used in a smart city, and a wireless terminal device used in a smart home.

[0090] Specifically, the station device 101 may be a terminal device or network device equipped with a wireless fidelity (WiFi) chip. Optionally, the station device 101 may support multiple WLAN standards, such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next generation 802.11 protocol, but is not limited thereto.

[0091] In some embodiments, the access point device 102 can be an access point for a mobile terminal to enter a wired network. The AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the AP can be a terminal device or a network device with a wireless fidelity chip. Optionally, the AP can support multiple WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a, 802.11bf, 802.11bn, and support the next generation 802.11 protocol, but is not limited to this.

[0092] Optionally, in an embodiment of the present disclosure, the AP and STA may be devices supporting multiple connections, for example, they may be represented as a multi-connection access point device (AP MLD) and a multi-connection site device (Non-Access Point Multi-Link Device, Non-AP MLD), respectively; the AP MLD may represent an access point supporting multi-connection communication functions, and the non-AP MLD may represent a site supporting multi-connection communication functions.

[0093] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0094] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0095] The various embodiments of the present disclosure can be applied to wireless local area networks (WLANs), such as those using the 802.11 series of protocols. In a WLAN, a Basic Service Set (BSS) is a fundamental component of a WLAN. A BSS network consists of station devices with some association within a specific coverage area. One scenario of association is that stations communicate directly with each other in an ad hoc network, which is called an Independent Basic Service Set (IBSS). Another more common scenario is that in a BSS network, there is only one central station dedicated to managing the BSS, called an access point, and all other STAs in the network are associated with it. Other stations in the BSS network that are not the central station are called terminals, also called non-AP STAs. Terminals and non-AP STAs are collectively referred to as STAs. When describing STAs, there is no need to distinguish between APs and non-AP STAs. In the same BSS network, due to distance, transmission power, and other factors, a STA cannot detect other STAs that are farther away from it, and the two STAs are each other's hidden nodes.

[0096] FIG2 is a schematic diagram of a channel control method according to an embodiment of the present disclosure. As shown in FIG2 , the method includes:

[0097] Step 201: The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy.

[0098] In WLAN, channels are typically divided into primary channels and secondary channels (also known as auxiliary channels or non-primary channels). A secondary channel can contain one or more sub-channels. For example, if the basic bandwidth unit is 20 MHz, when the channel bandwidth is 20 MHz, there is only one primary channel with a bandwidth of 20 MHz. When the channel bandwidth is greater than 20 MHz, there is one channel with a bandwidth of 20 MHz as the primary channel, and the remaining one or more 20 MHz channels are secondary channels. The primary 20 MHz channel is the common channel of operation for stations that are members of the basic service set (BSS). Stations in the BSS can compete for channels on the primary 20 MHz channel to seize channel resources.

[0099] As an example, as shown in FIG3 , the primary channel is, for example, the primary 20 MHz channel in FIG3 ; wherein the secondary channel may include one or more sub-channels, for example, the 20 MHz secondary channel and the 40 MHz secondary channel in FIG3 .

[0100] During the channel contention process, if the primary channel is in the OBSS busy state (OBSS interference), as shown in the T1 and T2 time periods in the figure, for example, it is occupied by other devices in the same OBSS as the WLAN, and other devices send physical layer protocol data units (PPDUs) on the primary channel, then the primary channel is in the OBSS busy state. If the primary channel is in the OBSS busy state, in order to fully utilize the channel resources, it can be switched to a secondary channel for communication to improve the communication system throughput and maximize channel resource utilization. For example, in the T1 time period, it can switch to a 20MHz secondary channel for communication, or in the T2 time period, it can switch to a 40MHz secondary channel for communication.

[0101] If the primary channel is in an idle state, as shown in the T3 time period in the figure, the AP and STA can send PPDUs to each other.

[0102] In addition, when communication is carried out on the primary channel (the secondary channel is busy), when the secondary channel is idle, the primary and secondary channels can be aggregated for communication to improve the system throughput; as an example, as shown in Figure 4, during the transmission of each frame, the primary channel and at least one secondary channel can be aggregated for transmission.

[0103] In an embodiment of the present disclosure, when the first device senses (or listens) that the primary channel is busy, it senses the channel state of the secondary channel; wherein the channel state includes idle or busy, and subsequently determines the processing operation of the random backoff window of the primary channel and / or other secondary channels based on the idle or busy state of the secondary channel.

[0104] Step 202: Determine a processing operation for the random backoff window of the primary channel and / or other secondary channels according to the channel status of the secondary channel.

[0105] During wireless communication, a communication device checks whether each channel is idle before transmitting data. If a channel is busy, the device delays access and uses a random backoff algorithm to avoid collisions, waiting until the channel becomes idle again. This delay results in access delay, a process known as random backoff. Specifically, when a WLAN device in a WLAN network detects that a channel is idle, it does not immediately transmit data, but instead waits for a period of time. For example, the WLAN device may randomly select a value (referred to as a random number) within the contention window (CW), i.e., [0, CW]. After detecting that the channel is idle for the following distributed inter-frame space (DIFS) time, it begins a countdown, decrementing the random number by 1 for each slot time (typically 9 microseconds). Before the random number reaches 0, if the channel is busy during a slot time, the count is paused. Afterwards, the count is resumed when the channel transitions from busy to idle. When the random number reaches 0, data transmission begins on the channel. Possible CW values ​​include 31, 63, 127, 255, 511, and 1023, corresponding to backoff times of 279 microseconds, 567 microseconds, 1143 microseconds, 2295 microseconds, 4599 microseconds, and 9207 microseconds, respectively. DCF refers to the distributed coordination function (DCF).

[0106] In an embodiment of the present disclosure, after the first device senses the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.

[0107] In some embodiments, the first device senses that the primary channel is busy, including:

[0108] The first device senses that the primary channel is busy, performs a random backoff operation, and generates a random number for the primary channel and a network allocation vector timer (NAV timer).

[0109] The first device senses that the primary channel is busy, performs a random backoff operation on the primary channel, and generates a random number for the primary channel. The random number is used to perform the random backoff process on the primary channel. Furthermore, a NAV timer for the primary channel at the MAC layer is generated. A device can maintain one or more NAV timers, where the NAV timer is set using the duration value in the MAC header of the frame. The NAV timer value decreases over time. A non-zero NAV indicates that the primary channel is busy. A zero NAV indicates that the primary channel is idle.

[0110] In some embodiments, enhanced distributed channel access (EDCA) access parameters of the secondary channel are the same as EDCA access parameters of the primary channel.

[0111] The EDCA access parameters in these secondary channels are the same and may be consistent with the EDCA access parameters in the primary channel. The EDCA in the primary channel is the EDCA parameter carried in the beacon frame broadcast by the AP the last time the STA receives it.

[0112] In some embodiments, sensing the channel state of the secondary channel includes:

[0113] The secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.

[0114] Sequential sensing means performing sensing in each sub-channel in a time-sharing manner; simultaneous sensing means performing sensing in multiple sub-channels at the same time, and the random backoff numbers generated in each sub-channel are independent of each other.

[0115] In some embodiments, the process of sequential perception includes:

[0116] Performing time-sharing sensing on each of the secondary channels in turn according to a preset secondary channel sequence number;

[0117] The NAV timer of the secondary channel is 0, the random backoff number counting is completed, and the channel state of the secondary channel is sensed again.

[0118] The secondary channel sequence numbers may be pre-negotiated between the site device and the access point device, or may be sorted from large to small according to the channel bandwidth, which is not limited in the embodiment of the present disclosure.

[0119] In the process of time-sharing sensing under multiple secondary channels, time-sharing sensing is performed on each of the secondary channels in turn according to the preset secondary channel sequence number; and, under any secondary channel, the remaining time value of the NAV timer is 0 and the random backoff number counting is completed, the channel status of the secondary channel is sensed again.

[0120] As an example, refer to FIG5 , which shows a second schematic diagram of the channel control method provided by an embodiment of the present disclosure.

[0121] The method comprises:

[0122] Step 501: The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy.

[0123] In step 502, if the Nth secondary channel is busy, a random backoff number is generated for the Nth secondary channel. Before transmitting data, the random backoff number is counted simultaneously in the primary channel, the N-1th secondary channel, and the Nth secondary channel. The number is counted according to the NAV timer duration setting in each channel, and a new random backoff number is generated.

[0124] Where N is a positive integer. For the Nth secondary channel sensed sequentially, if the channel is detected as busy on that secondary channel, a random backoff is performed on that secondary channel, and a random number (i.e., a random backoff number) is generated. Furthermore, before the first device transmits data again, the random backoff number is counted simultaneously on the primary channel, the N-1th secondary channel, and the Nth secondary channel. The backoff number is counted based on the NAV timer setting for each channel, along with the generated random number.

[0125] In step 503, if the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff counts in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff counts in the primary channel and the NAV timer count of the primary channel are maintained.

[0126] Among them, for the Nth secondary channel sensed in sequence, if the channel is sensed to be idle under this secondary channel, data transmission is performed on this secondary channel; the random numbers in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; at the same time, the random numbers in the primary channel are maintained, and the NAV timer of the primary channel is kept counting.

[0127] In some embodiments, the simultaneous sensing process includes:

[0128] Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.

[0129] The sensing is performed simultaneously in multiple sub-channels, and the random backoff numbers generated in each sub-channel are independent of each other.

[0130] As an example, refer to FIG6 , which shows a third schematic diagram of the channel control method provided by an embodiment of the present disclosure.

[0131] The method comprises:

[0132] Step 601: The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy.

[0133] Step 602: If the first channel is idle, data is transmitted on the first channel, the NAV timers of the primary channel and other secondary channels are set to 0, and / or the random backoff counts of the primary channel and other secondary channels are maintained.

[0134] Among them, for a sub-channel among multiple sub-channels sensed simultaneously, if the channel is sensed to be idle under the sub-channel, data transmission is performed under the sub-channel; the NAV timer of the main channel and other sub-channels is set to 0, and / or the random backoff number count of the main channel and other sub-channels is maintained.

[0135] Step 603: If all the secondary channels are busy, continue sensing on the channel with the smallest random backoff number and / or a NAV timer count of 0.

[0136] If all the secondary channels are busy, sensing is continued on a channel with the minimum random backoff number and / or a NAV timer count of 0.

[0137] In an embodiment of the present disclosure, after the first device senses the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.

[0138] In an embodiment of the present disclosure, after the first device senses the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is determined according to the channel status of the secondary channel; the processing operation, for example, maintains the count of the random backoff exposure, or generates a new random backoff number; according to the channel status of the secondary channel, the processing operation of the random backoff window of the main channel and / or other secondary channels is clarified, and the communication mechanism of the WLAN device in the primary and secondary channels is improved to meet the transmission requirements of UHR.

[0139] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0140] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0141] In some embodiments, terms such as wireless access scheme and waveform may be used interchangeably.

[0142] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0143] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0144] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0145] The channel control method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 201 can be implemented as an independent embodiment, step 202 can be implemented as an independent embodiment, step 501 can be implemented as an independent embodiment, step 502 can be implemented as an independent embodiment, step 503 can be implemented as an independent embodiment, step 601 can be implemented as an independent embodiment, step 602 can be implemented as an independent embodiment, and step 603 can be implemented as an independent embodiment; the combination of step 501 and step 502 can be implemented as an independent embodiment, the combination of step 501 and step 503 can be implemented as an independent embodiment, the combination of step 201 and step 202 can be implemented as an independent embodiment, the combination of step 601 and step 602 can be implemented as an independent embodiment, and the combination of step 601 and step 603 can be implemented as an independent embodiment.

[0146] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 to FIG. 6 .

[0147] FIG7 is a fourth flow chart of a channel control method according to an embodiment of the present disclosure.

[0148] As shown in FIG7 , the above method includes:

[0149] Step 701: The first device senses that the primary channel is busy and senses the channel status of the secondary channel; wherein the channel status includes idle or busy;

[0150] Step 702: Determine a processing operation for the random backoff window of the primary channel and / or other secondary channels according to the channel status of the secondary channel.

[0151] Optionally, in the embodiment of the present disclosure, the first device senses that the primary channel is busy, including:

[0152] The first device senses that the primary channel is busy, performs a random backoff operation, and generates a random backoff number and a NAV timer for the primary channel.

[0153] Optionally, in the embodiment of the present disclosure, sensing the channel state of the secondary channel includes:

[0154] The secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.

[0155] Optionally, in the embodiment of the present disclosure, the sequentially sensing the secondary channels includes:

[0156] Performing time-sharing sensing on each of the secondary channels in turn according to a preset secondary channel sequence number;

[0157] The NAV timer of the secondary channel is 0, the random backoff number counting is completed, and the channel state of the secondary channel is sensed again.

[0158] Optionally, in the embodiment of the present disclosure, determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and / or other secondary channels includes:

[0159] If the Nth secondary channel is busy, a random backoff number is generated for the Nth secondary channel; and before transmitting data, the random backoff number is counted in the primary channel, the N-1th secondary channel, and the Nth secondary channel at the same time; and according to the duration setting of the NAV timer in each channel, the count is performed and a new random backoff number is generated.

[0160] If the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff counts in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff counts in the primary channel and the NAV timer count of the primary channel are maintained.

[0161] Optionally, in the embodiment of the present disclosure, the simultaneously sensing the secondary channels includes:

[0162] Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.

[0163] Optionally, in the embodiment of the present disclosure, determining, based on the channel state of the secondary channel, a processing operation for a random backoff window of the primary channel and / or other secondary channels includes:

[0164] If the first channel is idle, data is transmitted on the first channel, the NAV timers of the primary channel and other secondary channels are set to 0, and / or the random backoff counts of the primary channel and other secondary channels are maintained;

[0165] If all the secondary channels are busy, sensing is continued on the channel with the smallest random backoff number and / or the NAV timer count is 0.

[0166] Optionally, in the embodiment of the present disclosure, the EDCA access parameter of the secondary channel is the same as the EDCA access parameter of the primary channel.

[0167] The channel control method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 701 may be implemented as an independent embodiment, and step 702 may be implemented as an independent embodiment; the combination of step 701 and step 702 may be implemented as an independent embodiment, but is not limited thereto.

[0168] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 7 .

[0169] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0170] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0171] In the embodiment of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0172] FIG8 is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure. As shown in FIG8 , the communication device 800 may include at least one of a sensing module 801 and a determining module 802 .

[0173] In some embodiments, the above-mentioned perception module 801 is used by the first device to perceive that the main channel is busy and perceive the channel status of the secondary channel; wherein the channel status includes idle or busy; the sending module 802 is used to determine the processing operation of the random backoff window of the main channel and / or other secondary channels based on the channel status of the secondary channel.

[0174] Optionally, the determining module 801 is configured to execute at least one of the communication steps (e.g., step 201, step 501, step 601, step 701, but not limited thereto) performed by the first device in any of the above methods, which are not described in detail here. The sending module 802 is configured to execute at least one of (e.g., step 202, step 502, step 503, step 602, step 603, step 702, but not limited thereto), which are not described in detail here.

[0175] Figure 9 is a schematic diagram of the structure of a terminal 900 (e.g., user equipment) proposed in an embodiment of the present disclosure. Terminal 900 can be a chip, chip system, or processor that supports a network device implementing any of the above methods, or a chip, chip system, or processor that supports a terminal implementing any of the above methods. Terminal 900 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0176] As shown in Figure 9, terminal 900 includes one or more processors 901. Processor 901 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Terminal 900 is used to perform any of the above methods.

[0177] In some embodiments, the terminal 900 further includes one or more memories 902 for storing instructions. Optionally, all or part of the memories 902 may be located outside the terminal 900.

[0178] In some embodiments, the terminal 900 further includes one or more transceivers 904. When the terminal 900 includes one or more transceivers 904, the transceiver 904 performs the communication steps such as sending and / or receiving in the above method, and the processor 901 performs at least one of the other steps (for example, step 201, step 202, step 501, step 502, step 503, step 601, step 602, step 603, step 701, step 702, but not limited thereto).

[0179] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0180] In some embodiments, terminal 900 may include one or more interface circuits 903. Optionally, interface circuit 903 is connected to memory 902. Interface circuit 903 may be configured to receive signals from memory 902 or other devices, and may be configured to send signals to memory 902 or other devices. For example, interface circuit 903 may read instructions stored in memory 902 and send the instructions to processor 901.

[0181] The terminal 900 described in the above embodiment may be a communication device such as a user device, but the scope of the terminal 900 described in the present disclosure is not limited thereto, and the structure of the terminal 900 may not be limited by FIG. 9 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0182] FIG10 is a schematic diagram of the structure of a chip 1000 according to an embodiment of the present disclosure. If the terminal 900 is a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 1000 shown in FIG10 , but the present disclosure is not limited thereto.

[0183] The chip 1000 includes one or more processors 1001 , and the chip 1000 is configured to execute any of the above methods.

[0184] In some embodiments, chip 1000 further includes one or more 1003. Optionally, interface circuit 1003 is connected to memory 1002. Interface circuit 1003 can be used to receive signals from memory 1002 or other devices, and interface circuit 1003 can be used to send signals to memory 1002 or other devices. For example, interface circuit 1003 can read instructions stored in memory 1002 and send the instructions to processor 1001.

[0185] In some embodiments, the interface circuit 1003 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 1001 performs at least one of the other steps (for example, step 201, step 202, step 501, step 502, step 503, step 601, step 602, step 603, step 701, step 702, but not limited to this).

[0186] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0187] In some embodiments, the chip 1000 further includes one or more memories 1002 for storing instructions. Alternatively, all or part of the memory 1002 may be external to the chip 1000.

[0188] The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the terminal 900, the terminal 900 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0189] The present disclosure also provides a program product, which, when executed by the terminal 900, enables the terminal 900 to perform any of the above methods. Optionally, the program product is a computer program product.

[0190] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A channel control method, characterized in that: The method comprises: The first device senses that the primary channel is busy and senses a channel state of the secondary channel; wherein the channel state includes idle or busy; According to the channel status of the secondary channel, a processing operation of the random backoff window of the primary channel and / or other secondary channels is determined.

2. The channel control method according to claim 1, wherein: The first device senses that the primary channel is busy, including: The first device senses that the primary channel is busy, performs a random backoff operation, and generates a random backoff number and a network allocation vector timer NAV timer for the primary channel.

3. The channel control method according to claim 2, wherein: The sensing of the channel state of the secondary channel includes: The secondary channels include at least two, and the secondary channels are sensed sequentially or simultaneously.

4. The channel control method according to claim 3, wherein: The sequentially sensing the secondary channels includes: Performing time-sharing sensing on each of the secondary channels in turn according to a preset secondary channel sequence number; The NAV timer of the secondary channel is 0, the random backoff number counting is completed, and the channel state of the secondary channel is sensed again.

5. The channel control method according to claim 3 or 4, characterized in that: The determining of a processing operation of a random backoff window for a primary channel and / or other secondary channels according to the channel state of the secondary channel includes: If the Nth secondary channel is busy, a random backoff number is generated for the Nth secondary channel; and before transmitting data, the random backoff number is counted in the primary channel, the N-1th secondary channel, and the Nth secondary channel at the same time; and according to the duration setting of the NAV timer in each channel, the count is performed and a new random backoff number is generated. If the Nth secondary channel is idle, data is transmitted on the Nth secondary channel, the random backoff counts in the first N-1 secondary channels are released, and the NAV timers of the first N-1 secondary channels are set to 0; and the random backoff counts in the primary channel and the NAV timer count of the primary channel are maintained.

6. The channel control method according to claim 3, wherein: The simultaneously sensing the secondary channels includes: Sensing is performed simultaneously in each of the secondary channels, and a random backoff number is generated and counted for each of the secondary channels.

7. The channel control method according to claim 3 or 6, characterized in that: The determining of a processing operation of a random backoff window for a primary channel and / or other secondary channels according to the channel state of the secondary channel includes: If the first channel is idle, data is transmitted on the first channel, the NAV timers of the primary channel and other secondary channels are set to 0, and / or the random backoff counts of the primary channel and other secondary channels are maintained; If all the secondary channels are busy, sensing is continued on the channel with the smallest random backoff number and / or the NAV timer count being 0.

8. The channel control method according to any one of claims 1 to 7, characterized in that: The EDCA access parameters of the secondary channel are the same as the enhanced distributed channel access EDCA access parameters of the primary channel.

9. A communication device, the communication device being a first device, characterized in that: The communication device comprises: A sensing module, configured for the first device to sense that the primary channel is busy and sense the channel status of the secondary channel; wherein the channel status includes idle or busy; The determining module is configured to determine a processing operation for the random backoff window of the primary channel and / or other secondary channels according to the channel status of the secondary channel.

10. A communication device, the communication device being a first device, characterized in that: include: one or more processors; The communication device is configured to execute the channel control method according to any one of claims 1 to 8.

11. A communication system, characterized in that: The invention comprises a communication device; wherein the communication device is configured to implement the channel control method according to any one of claims 1 to 8.

12. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the channel control method according to any one of claims 1 to 8.

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