Low-delay service transmission method, communication device and communication system
Patent Information
- Application Number
- CN202380011612.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-09
- Publication Date
- 2026-01-30
AI Technical Summary
In UHR, the transmission of low-latency services has problems with delay and co-frequency interference, which affects network performance and reliability.
By determining the first transmit power of the first wireless frame in the first device, the transmit power is greater than the reference transmit power, including the second transmit power that transmits a non-low delay service or the third transmit power that was last transmitted by the first device, to identify the transmission of the low delay service within the TXOP of the second device and to avoid co-frequency interference in the OBSS.
It realizes efficient transmission of low-latency services in OBSS environment, reduces latency and co-frequency interference, and improves network reliability and performance.
Smart Images
Figure CN121444571A_ABST
Abstract
Description
Low-latency service transmission method, communication equipment, and communication system Technical Field
[0001] The present disclosure relates to the field of communication technologies, and in particular to a low-latency service transmission 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, the transmission of low latency services is one of the research focuses. Therefore, the transmission of low latency services needs to be further improved.
[0004] Summary of the Invention
[0005] The embodiments of the present disclosure provide a low-latency service transmission method, a communication device, and a communication system to further improve the transmission of low-latency services.
[0006] In one aspect, an embodiment of the present disclosure provides a low-latency service transmission method, applied to a first device, the method comprising:
[0007] Determining a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device sends a low-latency service within a TXOP of the second device; and the first device and the second device are in an OBSS;
[0008] The first transmit power is greater than a reference transmit power; the reference transmit power includes: a second transmit power of the second device transmitting a non-low-latency service, or a third transmit power of the first device sending the first radio frame for the last time;
[0009] The first radio frame is sent.
[0010] On the other hand, an embodiment of the present disclosure further provides a low-latency service transmission method, applied to a third device, the method comprising:
[0011] receiving a first wireless frame sent by a first device;
[0012] The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS;
[0013] Among them, the first transmission power of the first wireless frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0014] 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 first device includes:
[0015] A determination module, configured to determine a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device sends a low-latency service within a TXOP of a second device; and the first device and the second device are in an OBSS;
[0016] The first transmit power is greater than a reference transmit power; the reference transmit power includes: a second transmit power of the second device transmitting a non-low-latency service, or a third transmit power of the first device sending the first radio frame for the last time;
[0017] A sending module is used to send the first wireless frame.
[0018] On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a third device, and the third device includes:
[0019] A first receiving module, configured to receive a first wireless frame sent by a first device;
[0020] The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS;
[0021] Among them, the first transmission power of the first wireless frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0022] On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, including:
[0023] one or more processors;
[0024] Among them, the first device is used to execute the low-latency service transmission method described in the embodiment of the present disclosure.
[0025] On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a third device, including:
[0026] one or more processors;
[0027] Among them, the third device is used to execute the low-latency service transmission method described in the embodiment of the present disclosure.
[0028] An embodiment of the present disclosure also provides a communication system, including a first device and a third device; wherein the first device is configured to implement the low-latency service transmission method described in the embodiment of the present disclosure, and the third device is configured to implement the low-latency service transmission method described in the embodiment of the present disclosure.
[0029] An 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 low-latency service transmission method as described in the embodiment of the present disclosure.
[0030] In an embodiment of the present disclosure, a first device determines a first transmission power of a first wireless frame; wherein the first transmission power is greater than a reference transmission power; the reference transmission power includes: a second transmission power of the second device for transmitting non-low-latency services, or a third transmission power of the first device for sending the first wireless frame last time; the first device sends a first wireless frame at the first transmission power to indicate that it will send a low-latency service within the TXOP of the second device; and at the same time, the first transmission power is used to avoid the co-channel interference problem in the OBSS to ensure the transmission of low-latency services.
[0031] 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
[0032] 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.
[0033] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;
[0034] FIG2 is one of the exemplary schematic diagrams of the method provided according to an embodiment of the present disclosure;
[0035] FIG3 is a second exemplary schematic diagram of a method according to an embodiment of the present disclosure;
[0036] FIG4 is a third exemplary schematic diagram of a method according to an embodiment of the present disclosure;
[0037] FIG5 is a flowchart of a low-latency service transmission method according to an embodiment of the present disclosure;
[0038] FIG6 is a second flow chart of a low-latency service transmission method according to an embodiment of the present disclosure;
[0039] FIG7 is a schematic structural diagram of a first device proposed in an embodiment of the present disclosure;
[0040] FIG8 is a schematic structural diagram of a third device proposed in an embodiment of the present disclosure;
[0041] FIG9 is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure;
[0042] FIG10 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION
[0043] The embodiments of the present disclosure provide a low-latency service transmission method, a communication device, and a communication system.
[0044] In a first aspect, an embodiment of the present disclosure provides a low-latency service transmission method, which is applied to a first device. The method includes:
[0045] Determining a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device sends a low-latency service within a TXOP of the second device; and the first device and the second device are in an OBSS;
[0046] The first transmit power is greater than a reference transmit power; the reference transmit power includes: a second transmit power of the second device transmitting a non-low-latency service, or a third transmit power of the first device sending the first radio frame for the last time;
[0047] The first radio frame is sent.
[0048] In the above embodiment, the first device determines the first transmission power of the first wireless frame; wherein the first transmission power is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device for transmitting non-low-latency services, or the third transmission power of the first device for sending the first wireless frame last time; the first device sends the first wireless frame at the first transmission power to indicate that it will send low-latency services within the TXOP of the second device; at the same time, the first transmission power is used to avoid the co-channel interference problem in the OBSS to ensure the transmission of low-latency services.
[0049] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first transmit power of the first radio frame includes:
[0050] receiving a PPDU transmitted by the second device, and determining a second transmit power at which the second device transmits the PPDU;
[0051] The second transmission power is increased by a first preset power value to obtain a first transmission power of the first radio frame.
[0052] In the above embodiment, the first transmit power of the first radio frame is obtained by increasing the second transmit power by the first preset power value, thereby avoiding the co-channel interference problem in the OBSS.
[0053] In conjunction with some embodiments of the first aspect, in some embodiments, receiving the PPDU transmitted by the second device includes:
[0054] parsing the PPDU transmitted by the second device;
[0055] According to the BSS color identifier of the PPDU, determine that the PPDU is a data frame transmitted by the OBSS of the first device; and / or, according to the target identification bit of the PPDU, determine that the PPDU is a data frame for a low-latency service.
[0056] In the above embodiment, the OBSS PPDU is identified by the BSS color identifier, and the service transmitted by the second device is identified as a non-low-latency service by the target identifier.
[0057] In conjunction with some embodiments of the first aspect, in some embodiments, before determining the first transmit power of the first radio frame, the method includes:
[0058] sending the first radio frame at the third transmit power;
[0059] The second radio frame fed back by the receiving end is not received, or the fourth transmission power of the second radio frame fed back by the receiving end is received is greater than the third transmission power.
[0060] In the above embodiment, when the first device is unable to detect the non-low-latency service transmission of the second device, the first wireless frame is sent at the third transmission power, and based on whether the receiving end feeds back the second wireless frame and the transmission power of the fed-back second wireless frame, it is determined whether there is a hidden node, and then whether to adjust the transmission power.
[0061] In conjunction with some embodiments of the first aspect, in some embodiments, after sending the first radio frame, the method includes:
[0062] The low-latency service is transmitted at the first transmission power.
[0063] In the above embodiment, the first device sends data frames of the low-latency service at the first transmit power, thereby avoiding the co-channel interference problem in the OBSS and ensuring the transmission of the low-latency service.
[0064] In conjunction with some embodiments of the first aspect, in some embodiments, before sending the first radio frame, the method includes:
[0065] Update the NAV of the first device to an idle state.
[0066] In the above embodiment, before the first device sends the first radio frame, its NAV is updated to an idle state, so that the first device can access the channel to send the first radio frame.
[0067] In conjunction with some embodiments of the first aspect, in some embodiments, after determining the first transmit power of the first radio frame, the method includes:
[0068] The first device includes an access point device, and the access point device broadcasts a third radio frame, wherein the third radio frame carries the first transmit power.
[0069] In the above embodiment, the access point device broadcasts in the third radio frame that it is in the OBSS TXOP and needs to send the transmission power value of the low-latency service, so that other devices in the OBSS can avoid the first transmission power when working.
[0070] In combination with some embodiments of the first aspect, in some embodiments, the first radio frame includes a request to send RTS frame or a low latency indication LLI frame.
[0071] In a second aspect, an embodiment of the present disclosure provides a low-latency service transmission method, which is applied to a third device. The method includes:
[0072] receiving a first wireless frame sent by a first device;
[0073] The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS;
[0074] Among them, the first transmission power of the first wireless frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0075] In conjunction with some embodiments of the second aspect, in some embodiments, before receiving the first radio frame sent by the first device, the method includes:
[0076] receiving, by the first device, the first radio frame sent at the third transmit power;
[0077] Send a second radio frame to the first device at a fourth transmit power; wherein the fourth transmit power is greater than the third transmit power.
[0078] In conjunction with some embodiments of the second aspect, in some embodiments, after receiving the first radio frame sent by the first device, the method includes:
[0079] Receive a low-latency service transmitted by the first device at the first transmit power.
[0080] In combination with some embodiments of the second aspect, in some embodiments, the first radio frame includes a request to send RTS frame or a low latency indication LLI frame.
[0081] In a third aspect, an embodiment of the present disclosure further provides a communication device, which is a first device, and the first device includes at least one of a determination module and a sending module; wherein the first device is used to execute an optional implementation method of the first aspect.
[0082] In a fourth aspect, an embodiment of the present disclosure further provides a communication device, which is a third device and includes: a first receiving module; wherein the above-mentioned third device is used to execute the optional implementation method of the second aspect.
[0083] In a fifth aspect, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first device, including:
[0084] one or more processors;
[0085] The first device is used to execute an optional implementation of the first aspect.
[0086] In a sixth aspect, an embodiment of the present disclosure further provides a communication device, where the communication device is a third device, including:
[0087] one or more processors;
[0088] The third device is used to execute the optional implementation of the second aspect.
[0089] In the seventh aspect, an embodiment of the present disclosure further provides a communication system, comprising a first device and a third device; wherein the first device is configured to execute the optional implementation method as described in the first aspect, and the third device is configured to execute the optional implementation method as described in the second aspect.
[0090] In an eighth aspect, an embodiment of the present disclosure further provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the optional implementation methods described in the first and second aspects.
[0091] In a ninth 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 of the first and second aspects.
[0092] In a tenth 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 of the first and second aspects.
[0093] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.
[0094] It is understandable that the first device, third device, communication system, storage medium, program product, computer program, chip, or chip system described above 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.
[0095] The present disclosure provides a low-latency service transmission method, communication device, and communication system. In some embodiments, the terms "low-latency service transmission method" and "signal transmission method" and "wireless frame transmission method" are interchangeable, and the terms "information processing system" and "communication system" are interchangeable.
[0096] 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.
[0097] 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.
[0098] 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.
[0099] In the embodiments of the present disclosure, “plurality” refers to two or more.
[0100] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.
[0101] 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.
[0102] 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.
[0103] 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.
[0104] 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.
[0105] 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.
[0106] 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.
[0107] 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.
[0108] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
[0109] In some embodiments, data, information, etc. may be obtained with the user's consent.
[0110] 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.
[0111] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.
[0112] The communication system shown in the embodiments of the present disclosure includes a first device, a second device, and a third device. As shown in FIG1 , the first device, the second device, and the third device may be a station device (STA) and an access point device (AP), respectively. For example, the first device may be AP1 or STA1 in FIG1 , the second device may be AP2 or STA2 in FIG1 , and the third device may be AP1 or STA1 in FIG1 .
[0113] In some embodiments, the site device 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 function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home.
[0114] Specifically, the station device may be a terminal device or network device with a Wireless Fidelity (WiFi) chip. Optionally, the station device 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.
[0115] In some embodiments, the access point device 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.
[0116] 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.
[0117] 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.
[0118] 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.
[0119] 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. As shown in the figure, AP1 and STA1 form BSS1, and AP2 and STA2 form BSS2. If the coverage of two or more BSSs overlap, an Overlapping Basic Service Set (BSS) (OBSS) is formed. In Figure 1, BSS1 and BSS2 overlap to form an OBSS.
[0120] FIG2 is an interactive diagram of a low-latency service transmission method according to an embodiment of the present disclosure. As shown in FIG2 , the method includes:
[0121] Step 201: Determine a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device transmits a low-latency service within a TXOP of a second device; and the first device and the second device are in an OBSS.
[0122] Among them, the first transmission power is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0123] In UHR, the transmission of low-latency services is one of the research focuses. In low-latency transmission scenarios, the real-time data traffic of many applications has strict latency requirements. For example, the average or maximum latency is on the order of a few milliseconds to tens of milliseconds, and the applications require real-time data traffic to have extremely low jitter and strong reliability.
[0124] In an OBSS, when a first device (which may be an AP or a STA, such as AP1 or STA1 in FIG1 ) senses that the OBSS is in a busy state; for example, when a second device (which may be an AP or a STA, such as AP2 or STA2 in FIG1 ) acts as a TXOP holder or TXOP responder of a transmission opportunity (TXOP) and transmits a non-low-latency service to its communication counterpart, and the first device senses that the OBSS is in a busy state, the first device sets its network allocation vector (NAV) duration to the aforementioned TXOP duration and does not access the channel during this period. In an embodiment of the present disclosure, in order to ensure the communication of low-latency services, within the TXOP of the second device, if the first device has a low-latency service to transmit, the first device sends a first wireless frame to indicate that it will send a low-latency service within the TXOP of the second device.
[0125] In the process of sending the first wireless frame, the first device first determines the first transmission power of the first wireless frame, and the value of the first transmission power is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device for transmitting non-low-latency services, or the third transmission power of the first device when it last sent the first wireless frame.
[0126] The reference transmit power is the second transmit power used by the second device to transmit non-low-latency services. Subsequently, the first device transmits the first radio frame at the first transmit power, or continues to transmit data frames for low-latency services at the first transmit power, to avoid co-channel interference with the second device. Specifically, with the rapid increase in wireless devices and applications, more and more wireless local area networks (WLANs) are being deployed in dense environments consisting of multiple OBSSs (OBSSs), and wireless communication devices with different protocol standards often exist within limited environments. High-density WLAN deployment inevitably leads to overlapping areas of adjacent BSSs. To avoid interference, APs in adjacent BSSs must operate on different frequency bands, but this requirement is often not met due to limited available frequency band resources. When multiple unrelated BSSs operating in the same frequency band or with partial frequency band overlap are close enough to receive each other's transmissions, an AP or STA in one BSS may block APs or STAs in other BSSs from transmitting information. This creates co-channel interference in OBSS networks, which can severely impact network performance and even paralyze the network. Therefore, in order to avoid co-channel interference with the second device, the first transmit power is set higher than the second transmit power of the second device for transmitting non-low-latency services, so as to ensure the transmission of low-latency services of the first device.
[0127] For example, when the first device can detect that the second device is transmitting a non-low-latency service, such as in the following cases 1 to 3:
[0128] In case 1, both AP1 (the first device, i.e., the transmitter that will subsequently send low-latency service data) and STA1 (the third device, i.e., the receiver that will subsequently receive low-latency service data) can monitor;
[0129] Case 2: AP1 (first device) can listen, STA1 (third device) cannot listen, and AP1 has downlink low-latency service transmission;
[0130] Case three: AP1 (the third device) cannot monitor, STA1 (the first device) can monitor, and STA1 has an uplink low-latency service.
[0131] When the first device is able to detect that the second device is transmitting a non-low-latency service, the first device receives the physical layer protocol data unit (PPDU) of the non-low-latency service transmitted by the first and second devices, that is, for the first device, the PPDU is an OBSS PPDU; after the first device receives the OBSS PPDU, it can calculate the transmission power of the OBSS PPDU based on the value of the received signal strength indication (RSSI) of the received OBSS PPDU. The specific calculation method can adopt the calculation method in the existing communication protocol, which will not be repeated here in the embodiments of the present disclosure.
[0132] The reference transmit power may also be the third transmit power at which the first device last transmitted the first radio frame. For example, in the case where the first device (at least one of AP1 and STA1 in FIG1 ) cannot detect the second device transmitting a non-low-latency service, such as in the following cases 4 to 6:
[0133] Case 4: neither AP1 (first device) nor STA1 (third device) can listen;
[0134] Case 5: AP1 (first device) cannot listen, STA1 (third device) can listen, and AP1 has downlink low-latency service transmission;
[0135] Case 6: AP1 (the third device) can monitor, STA1 (the first device) cannot monitor, and STA1 has an uplink low-latency service.
[0136] In the case where the first device cannot detect the second device transmitting a non-low-latency service, it cannot receive the OBSS PPDU and therefore cannot determine the second transmission power. In this way, within the TXOP of the second device, when there is a low-latency service to be transmitted, the first device first sends the first radio frame once, and the transmission power of this time is changed to the third transmission power. After sending the first radio frame this time, if the confirmation message frame for the feedback of the third device for the first radio frame is not received, or the transmission power of the received confirmation message frame (hereinafter referred to as the fourth transmission power) is higher than the third transmission power, it can be determined that there is a hidden node in the OBSS where the first device is located, and the working power of the hidden node may be the same as or very close to the third transmission power. At this time, in order to avoid the same-channel interference caused by the hidden node, the first device increases the transmission power of the first radio frame and increases the third transmission power to the first transmission power to avoid the same-channel interference.
[0137] Optionally, in an embodiment of the present disclosure, the first wireless frame includes a request to send (RTS) frame or a low latency indication (Low Latency Indication, LLI) frame.
[0138] Optionally, the first transmit power may be obtained by adding ndB to the reference transmit power. For example, when n is 3, the power is increased to twice the original power.
[0139] Step 202: Send the first wireless frame.
[0140] The first device sends a first radio frame at a first transmission power to indicate that it will send a low-latency service within the TXOP of the second device; at the same time, the first transmission power is used to avoid the co-channel interference problem in the OBSS and ensure the transmission of the low-latency service.
[0141] Step 203: Transmit the low-latency service at the first transmission power.
[0142] Similarly, the first device sends data frames of the low-latency service at the first transmission power, thereby avoiding the co-channel interference problem in the OBSS and ensuring the transmission of the low-latency service.
[0143] In some embodiments, as shown in FIG3 , step 202 includes step 302 and step 303 ; optionally, before step 302 , step 301 is further included, as specifically shown in FIG3 :
[0144] Step 301: The second device transmits a PPDU.
[0145] For example, AP2 or STA2 in FIG1 , as a TXOP holder or TXOP responder of a TXOP, transmits a non-low-latency service to its communication counterpart and sends a PPDU; and for the first device, the PPDU is an OBSS PPDU.
[0146] Step 302: The first device receives the PPDU transmitted by the second device, and determines a second transmit power used by the second device to transmit the PPDU.
[0147] In the case where the first device can detect the second device performing non-low-latency service transmission, such as the following cases 1 to 3:
[0148] In case 1, both AP1 (the first device, i.e., the transmitter that will subsequently send low-latency service data) and STA1 (the third device, i.e., the receiver that will subsequently receive low-latency service data) can monitor;
[0149] Case 2: AP1 (first device) can listen, STA1 (third device) cannot listen, and AP1 has downlink low-latency service transmission;
[0150] Case three: AP1 (the third device) cannot monitor, STA1 (the first device) can monitor, and STA1 has an uplink low-latency service.
[0151] Among them, after the first device receives the OBSS PPDU, it can calculate the transmission power of the OBSS PPDU based on the value of the received signal strength indication (RSSI) of the received OBSS PPDU. The specific calculation method can adopt the calculation method in the existing communication protocol, which will not be repeated in the embodiment of the present disclosure.
[0152] Step 303: Increase the second transmit power by a first preset power value to obtain a first transmit power of the first radio frame.
[0153] The first transmit power may be obtained by adding a first preset power value to the reference transmit power. For example, when the first preset power value is 3 dB, the power is increased to twice the original value.
[0154] Step 304: Send the first wireless frame.
[0155] Step 305: Transmit the low-latency service at the first transmission power.
[0156] In some embodiments, step 302 includes:
[0157] parsing the PPDU transmitted by the second device;
[0158] According to the BSS color identifier of the PPDU, determine that the PPDU is a data frame transmitted by the OBSS of the first device; and / or, according to the target identification bit of the PPDU, determine that the PPDU is a data frame for a low-latency service.
[0159] The first device parses the BSS color in the physical layer preamble (PHY preamble) of the PPDU transmitted by the second device, and determines that it is a data frame transmitted by the OBSS where the first device is located based on the BSS color; in addition, the PPDU may carry a target identification bit to identify that the transmission is a non-low-latency service, specifically, a bit in the PHY preamble or a bit in the Media Access Control (MAC) frame header can be used as the target identification bit;
[0160] In some embodiments, as shown in FIG4 , before step 202 , steps 401 and 402 are further included, as specifically shown in FIG3 :
[0161] Step 401: A first device sends a first radio frame at a third transmission power.
[0162] In the case where the first device (at least one of AP1 and STA1 in FIG1 ) cannot detect the non-low-latency service transmission performed by the second device, such as the following cases 4 to 6:
[0163] Case 4: neither AP1 (first device) nor STA1 (third device) can listen;
[0164] Case 5: AP1 (first device) cannot listen, STA1 (third device) can listen, and AP1 has downlink low-latency service transmission;
[0165] Case 6: AP1 (the third device) can monitor, STA1 (the first device) cannot monitor, and STA1 has an uplink low-latency service.
[0166] The first device cannot receive the OBSS PPDU, and therefore cannot determine the second transmission power. In this way, within the TXOP of the second device, when there is a low-latency service that needs to be transmitted, the first device first sends a first radio frame at the third transmission power. After sending the first radio frame this time, if the confirmation message frame for the first radio frame is not received from the third device, or the transmission power of the received confirmation message frame (hereinafter referred to as the fourth transmission power) is higher than the third transmission power, it can be determined that there is a hidden node in the OBSS where the first device is located, and the working power of the hidden node may be the same as or very close to the third transmission power. At this time, in order to avoid the same-channel interference caused by the hidden node, the first device increases the transmission power of the first radio frame and increases the third transmission power to the first transmission power to avoid the same-channel interference.
[0167] That is to say, the first device first attempts to send the first wireless frame at the third transmission power. If the confirmation message frame for the first wireless frame is not received from the third device, or the transmission power of the received confirmation message frame (hereinafter referred to as the fourth transmission power) is higher than the third transmission power, the transmission power can be increased by a certain amount each time, and the first wireless frame can be tried again until the confirmation message frame for the first wireless frame is received from the third device, and the transmission power of the received confirmation message frame is the same as the transmission power of the first wireless frame this time. At this time, the first wireless frame is sent successfully, and the transmission power of the first wireless frame can be used as the transmission power for transmitting low-latency services subsequently.
[0168] In step 402 , if the second wireless frame fed back by the third device for the first wireless frame is not received, or the fourth transmission power of the second wireless frame fed back by the receiving end is greater than the third transmission power, the first device may determine that a hidden node exists and execute step 403 .
[0169] The second radio frame may be an ACK frame or a clear to send (CTS) frame. For example, if the first radio frame is an RTS frame, the second radio frame may be a CTS frame; if the first radio frame is an LLI frame, the second radio frame may be an ACK frame.
[0170] Step 403: Increase the third transmit power by a first preset power value to obtain a first transmit power of the first radio frame.
[0171] The first transmit power may be obtained by adding a first preset power value to the reference transmit power. For example, when the first preset power value is 3 dB, the power is increased to twice the original value.
[0172] The third transmit power is increased by the first preset power value, and the first radio frame is continuously transmitted at the increased power until a second radio frame is received as feedback from the third device regarding the first radio frame. If the transmit power of the received second radio frame is the same as the transmit power of the first radio frame, it is determined that the transmit power for the first radio frame is feasible. The transmit power is confirmed as the first transmit power, and step 404 is executed.
[0173] Step 404: Send the first wireless frame.
[0174] Step 405: Transmit low-latency services at the first transmission power.
[0175] In some embodiments, before sending the first radio frame, the method includes:
[0176] Update the NAV of the first device to an idle state.
[0177] Before the first device sends the first radio frame, the NAV of the first device is updated to an idle state at the MAC layer, so that the first device can access the channel to send the first radio frame.
[0178] In some embodiments, after determining the first transmit power of the first radio frame, the method includes:
[0179] The first device includes an access point device, and the access point device broadcasts a third radio frame, wherein the third radio frame carries the first transmit power.
[0180] The third wireless frame may be a beacon frame, a probe response frame, or a (Re)association response frame.
[0181] When the access point device broadcasts in the third radio frame that it is in the OBSS TXOP, it needs to send the transmission power value of the low-latency service so that other devices in the OBSS can avoid the first transmission power when working.
[0182] 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.
[0183] 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.
[0184] In some embodiments, terms such as wireless access scheme and waveform may be used interchangeably.
[0185] 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.
[0186] 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.
[0187] 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.
[0188] FIG5 is one of the flowcharts of the low-latency service transmission method according to an embodiment of the present disclosure.
[0189] As shown in FIG5 , the above method may be applied to a first device, and the above method includes:
[0190] Step 501: Determine a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device transmits a low-latency service within a TXOP of a second device; and the first device and the second device are in an OBSS.
[0191] The first transmit power is greater than a reference transmit power; the reference transmit power includes: a second transmit power of the second device transmitting a non-low-latency service, or a third transmit power of the first device sending the first radio frame for the last time;
[0192] Step 502: Send the first wireless frame.
[0193] Optionally, in the embodiment of the present disclosure, determining the first transmit power of the first radio frame includes:
[0194] Step 503: Receive the PPDU transmitted by the second device, and determine a second transmit power for transmitting the PPDU by the second device;
[0195] Step 504: Increase the second transmit power by a first preset power value to obtain a first transmit power of the first radio frame.
[0196] Optionally, in the embodiment of the present disclosure, step 503 includes:
[0197] Step 5031: Parse the PPDU transmitted by the second device;
[0198] Step 5032: Determine, based on the BSS color identifier of the PPDU, that the PPDU is a data frame transmitted by the OBSS of the first device; and / or, step 5033: Determine, based on the target identifier of the PPDU, that the PPDU is a data frame for a low-latency service.
[0199] Optionally, in the embodiment of the present disclosure, before determining the first transmit power of the first radio frame, the method includes:
[0200] Step 505: Send the first radio frame at the third transmit power;
[0201] Step 506: The second radio frame fed back by the receiving end is not received, or, in step 506, the fourth transmission power of the second radio frame fed back by the receiving end is greater than the third transmission power.
[0202] Optionally, in the embodiment of the present disclosure, after sending the first radio frame, the method includes:
[0203] Step 507: Transmit the low-latency service at the first transmission power.
[0204] Optionally, in the embodiment of the present disclosure, before sending the first radio frame, the method includes:
[0205] Update the NAV of the first device to an idle state.
[0206] Optionally, in the embodiment of the present disclosure, after determining the first transmit power of the first radio frame, the method includes:
[0207] Step 508: The first device includes an access point device, and the access point device broadcasts a third radio frame, in which the first transmit power is carried.
[0208] Optionally, in an embodiment of the present disclosure, the first radio frame includes a request to send RTS frame or a low latency indication LLI frame.
[0209] The low-latency service transmission method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, 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 505 can be implemented as an independent embodiment, step 507 can be implemented as an independent embodiment, and step 508 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 503 and step 504 can be implemented as an independent embodiment, and the combination of step 505 and step 506 can be implemented as an independent embodiment, but are not limited thereto.
[0210] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 5 .
[0211] FIG6 is a second flow chart of a low-latency service transmission method according to an embodiment of the present disclosure.
[0212] As shown in FIG6 , the above method may be applied to a third device, and the above method includes:
[0213] Step 601: receiving a first radio frame sent by a first device;
[0214] The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS;
[0215] Among them, the first transmission power of the first wireless frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0216] Optionally, in the embodiment of the present disclosure, before receiving the first radio frame sent by the first device, the method includes:
[0217] Step 602: Receive the first radio frame sent by the first device at the third transmit power;
[0218] Step 603: Send a second radio frame to the first device at a fourth transmit power; wherein the fourth transmit power is greater than the third transmit power.
[0219] Optionally, in the embodiment of the present disclosure, after receiving the first radio frame sent by the first device, the method includes:
[0220] Step 604: Receive the low-latency service transmitted by the first device at the first transmit power.
[0221] Optionally, in an embodiment of the present disclosure, the first radio frame includes a request to send RTS frame or a low latency indication LLI frame.
[0222] The low-latency service transmission method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 601 can be implemented as an independent embodiment, step 602 can be implemented as an independent embodiment, step 603 can be implemented as an independent embodiment, and step 604 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 602 and step 603 can be implemented as an independent embodiment, but are not limited thereto.
[0223] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 6 .
[0224] 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.
[0225] 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.
[0226] 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.
[0227] FIG7 is a schematic diagram of the structure of a first device according to an embodiment of the present disclosure. As shown in FIG7 , the first device 700 may include at least one of a determining module 701 and a sending module 702 .
[0228] In some embodiments, the determining module 701 is configured to determine a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device sends a low-latency service within a TXOP of the second device; and the first device and the second device are in an OBSS;
[0229] Among them, the first transmission power is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0230] The sending module 702 is configured to send the first radio frame.
[0231] Optionally, the determination module 701 is configured to execute at least one of the communication steps (e.g., steps 201, 501, 302, 303, and 403, but not limited thereto) performed by the first device in any of the above methods, and will not be described in detail here. The sending module 702 is configured to execute at least one of the communication steps (e.g., steps 202, 203, 304, 305, 401, 402, 404, 405, 502, 505, 507, and 508, but not limited thereto) performed by the first device in any of the above methods, and will not be described in detail here.
[0232] FIG8 is a schematic diagram of the structure of a third device proposed in an embodiment of the present disclosure. As shown in FIG8 , the third device 800 may include: a first receiving module 801 .
[0233] In some embodiments, the first receiving module 801 is configured to receive a first radio frame sent by a first device;
[0234] The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS;
[0235] Among them, the first transmission power of the first wireless frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when sending the first wireless frame last time.
[0236] Optionally, the first receiving module 801 is used to execute at least one of the communication steps (such as step 601, but not limited thereto) performed by the third device in any of the above methods, which will not be described in detail here.
[0237] 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.
[0238] 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.
[0239] 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.
[0240] 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 at least one of the communication steps such as sending and / or receiving in the above method (for example, step 202, step 203, step 301, step 302, step 303, step 304, step 305, step 401, step 402, step 403, step 404, step 405, step 502, step 503, step 505, step 507, step 508, step 601, step 603, step 604, but not limited thereto), and the processor 901 performs at least one of the other steps (for example, step 201, step 303, step 501, step 5031, step 5032, step 504, step 506, step 603, but not limited thereto).
[0241] 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.
[0242] 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.
[0243] 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.
[0244] 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.
[0245] The chip 1000 includes one or more processors 1001 , and the chip 1000 is configured to execute any of the above methods.
[0246] 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.
[0247] In some embodiments, the interface circuit 1003 executes at least one of the communication steps such as sending and / or receiving in the above method, such as step 202, step 203, step 301, step 302, step 303, step 304, step 305, step 401, step 402, step 403, step 404, step 405, step 502, step 503, step 505, step 507, step 508, step 601, step 603, step 604, but not limited to these), and the processor 1001 executes at least one of the other steps (such as step 201, step 303, step 501, step 5031, step 5032, step 504, step 506, step 603, but not limited to these).
[0248] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.
[0249] 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.
[0250] 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.
[0251] 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.
[0252] 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 low-latency service transmission method, applied to a first device, characterized in that: The method comprises: Determine a first transmit power of a first radio frame; wherein the first radio frame identifies that the first device sends a low-latency service within a transmission opportunity TXOP of the second device; the first device and the second device are in an overlapping basic service set OBSS; The first transmit power is greater than a reference transmit power; the reference transmit power includes: a second transmit power of the second device transmitting a non-low-latency service, or a third transmit power of the first device sending the first radio frame last time; The first radio frame is sent.
2. The low-latency service transmission method according to claim 1, characterized in that: The determining a first transmit power of a first radio frame includes: receiving a physical layer protocol data unit PPDU transmitted by the second device, and determining a second transmit power at which the second device transmits the PPDU; The second transmission power is increased by a first preset power value to obtain a first transmission power of the first radio frame.
3. The low-latency service transmission method according to claim 2, characterized in that: The receiving the PPDU transmitted by the second device includes: parsing the PPDU transmitted by the second device; According to the BSS color identifier of the PPDU, determine that the PPDU is a data frame transmitted by the OBSS of the first device; and / or, according to the target identifier of the PPDU, determine that the PPDU is a data frame for a low-latency service.
4. The low-latency service transmission method according to claim 1, characterized in that: Before determining the first transmit power of the first radio frame, the method includes: Sending the first radio frame at the third transmit power; The second radio frame fed back by the receiving end is not received, or the fourth transmission power of the second radio frame fed back by the receiving end is received is greater than the third transmission power.
5. The low-latency service transmission method according to claim 1, characterized in that: After sending the first radio frame, the method includes: The low-latency service is transmitted at the first transmission power.
6. The low-latency service transmission method according to claim 1, characterized in that: Before sending the first wireless frame, the method includes: The network allocation vector NAV of the first device is updated to an idle state.
7. The low-latency service transmission method according to claim 1, characterized in that: After determining the first transmit power of the first radio frame, the method includes: The first device includes an access point device, and the access point device broadcasts a third radio frame, in which the first transmission power is carried.
8. The low-latency service transmission method according to any one of claims 1 to 7, characterized in that: The first radio frame includes a request to send RTS frame or a low latency indication LLI frame.
9. A low-latency service transmission method, applied to a third device, characterized in that: The method comprises: Receiving a first wireless frame sent by a first device; The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS; Among them, the first transmission power of the first radio frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when it last sent the first radio frame.
10. The low-latency service transmission method according to claim 9, characterized in that: Before receiving the first wireless frame sent by the first device, the method includes: Receiving the first wireless frame sent by the first device at the third transmit power; The second wireless frame is sent to the first device at a fourth transmission power; wherein the fourth transmission power is greater than the third transmission power. power.
11. The low-latency service transmission method according to claim 9, characterized in that: After receiving the first wireless frame sent by the first device, the method includes: Receive a low-latency service transmitted by the first device using the first transmit power.
12. The low-latency service transmission method according to any one of claims 9 to 11, characterized in that: The first radio frame includes a request to send RTS frame or a low latency indication LLI frame.
13. A communication device, the communication device being a first device, characterized in that: The first device comprises: A determination module, configured to determine a first transmit power of a first radio frame; wherein the first radio frame indicates that the first device sends a low-latency service within a TXOP of a second device; and the first device and the second device are in OBSS; The first transmit power is greater than a reference transmit power; the reference transmit power includes: a second transmit power of the second device transmitting a non-low-latency service, or a third transmit power of the first device sending the first radio frame last time; A sending module is used to send the first wireless frame.
14. A communication device, the communication device being a third device, characterized in that: The third device comprises: A first receiving module, configured to receive a first wireless frame sent by a first device; The first radio frame indicates that the first device sends a low-latency service within the TXOP of the second device; the first device and the second device are in the same OBSS; Among them, the first transmission power of the first radio frame is greater than the reference transmission power; the reference transmission power includes: the second transmission power of the second device transmitting non-low-latency services, or the third transmission power of the first device when it last sent the first radio frame.
15. A communication device, the communication device being a first device, characterized in that: include: one or more processors; The first device is used to execute the low-latency service transmission method according to any one of claims 1 to 8.
16. A communication device, the communication device being a third device, characterized in that: include: one or more processors; The third device is used to execute the low-latency service transmission method described in any one of claims 9 to 12.
17. A communication system, characterized in that: It includes a first device and a third device; wherein the first device is configured to implement the low-latency service transmission method described in any one of claims 1 to 8, and the third device is configured to implement the low-latency service transmission method described in any one of claims 9 to 12.
18. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device executes the low-latency service transmission method as described in any one of claims 1 to 8, or executes the low-latency service transmission method as described in any one of claims 9 to 12.