65 results about "Channel contention" patented technology

The invention belongs to the technical field of computer communication, and particularly relates to a communication link dynamic channel allocation method based on a swan gap system. The method comprises the implementation steps that a cooperative communication monitoring module is established at a gap communication node, multi-dimensional link state parameters such as channel idle degree are collected in a distributed mode, and the collection period is dynamically adjusted along with state changes; constructing an evaluation model by using an improved LSTM algorithm, fusing the space coordinate frequency domain features and the time sequence parameters, and generating a channel state evaluation matrix; dynamically allocating channels in combination with channel stability, task priorities and data types; and a rapid re-evaluation mechanism is set, and when the channel score deviates from a threshold value, re-allocation is performed, so that the communication stability is guaranteed. Through dynamic monitoring, intelligent evaluation and self-adaptive distribution, the channel resource utilization rate and communication stability are improved, the method is suitable for a distributed internet of things scene of the swan mongolian system, and the problems of channel competition and real-time scheduling under high-density deployment are solved.

This disclosure discloses a multi-link communication method and a related apparatus. In a scenario in which simultaneous transmission and reception over a plurality of links is not supported, a multi-link device first sends a first physical layer protocol data unit (PPDU) over a first link, and then sends a second PPDU over a second link through channel contention, where an end time of the second PPDU is not later than an end time of the first PPDU. The method not only ensures fairness of multi-link access, but also can reduce an idle rate of the plurality of links.

The invention relates to the technical field of distributed quantum computing, in particular to a distributed quantum circuit state transfer evaluation method based on state transfer group scoring. According to the method, the problems that the existing method depends on a simplified scheduling model and channel contention possibly caused by parallel communication operation is not restrained are solved, and meanwhile, the defect that a scheduling feasibility verification mechanism is lacked is overcome. According to the technical scheme, the method comprises the following steps that S1, a quantum circuit partition structure is analyzed; s2, calculating potential scores of two bits in the global gate as state transmission bits; s3, expanding a state transmission group: moving the interference gate based on a gate exchange rule to expand the state transmission group; s4, performing scheduling feasibility verification on the state transfer group; S5, performing final state transfer frequency statistics; and calculating the total communication cost according to whether the state transfer group needs to return the cost. The method has the beneficial effects that the state transfer times are accurately evaluated; identification and optimization of the combined transmission opportunity are supported; and an evaluation strategy with adjustable parameters is supported.

A control method employed by a wireless fidelity (Wi-Fi) multi-link device (MLD) includes: in response to gaining access of a first link at a first time point through channel contention, enabling a multi-link coherent operation mode on the first link for performing frame exchange process on the first link by using N spatial streams, wherein N is a positive integer not smaller than 2; and in response to gaining access of a second link at a second time point through channel contention, blocking the multi-link coherent operation mode from being enabled on the second link, wherein performance of the second link is lower than performance of the first link.

A method of a first radio node. The method includes: transmitting, from the first radio node, sidelink position reference signal configuration defining at least one position reference signal to be transmitted from a first radio node to the second radio node; generating at least one position reference signal as defined by the SPRS configuration transmitted to the second radio node; performing channel contention for the purpose of position reference signal transmission in a bandwidth range at least partially included in an unlicensed radio band, wherein the contention is performed using a listen before talk mechanism; based on a positive result of the channel contention, accessing the channel for the duration of a channel on time; and transmitting the at least one position reference signal to the second radio node during the channel on time.

A channel contention method includes performing, by a first station and a second station of a multi-link device (MLD), channel contention based on a first enhanced distributed channel access (EDCA) parameter; generating, by the first station and the second station, a point coordination function (PCF) inter-frame space (PIFS) access t imer when the first station performs EDCA access and the second station performs PIFS access; and performing, by the first station and the second station, channel contention based on a second EDCA parameter before the PIFS access timer backs off to 0.

Provided are a wireless communication method and device, an AP having an uplink multi-user detection capability in a channel competition stage, so that the AP can reasonably select to grant a TXOP to an STA or the AP based on an uplink service demand quantity and a downlink service demand quantity, thereby reducing the time delay of uplink and downlink data transmission, and alleviating time delay jitter. The wireless communication method comprises: a first STA sending a first PPDU, the first STA having uplink data to be transmitted; wherein the first PPDU comprises a first MAC frame and a first identification field, the first MAC frame is used for competing for a channel, and the first identification field is used for indicating an AID of the first STA; or, the first PPDU comprises a second MAC frame, the second MAC frame is used for competing for a channel, and the second MAC frame is also used for triggering all STAs receiving the second MAC frame to feed back whether a medium needs to be acquired to transmit uplink data.

The embodiment of the invention discloses a communication method and device, and the method comprises the steps: an access point transmits a transmission opportunity TXOP initial control frame to a station after switching from a non-main channel to a main channel in a non-main channel access mode; and performing channel access based on whether the acknowledgement frame is received or not. By adopting the embodiment of the invention, the communication interference caused by the change of the OBSS TXOP on the main channel is avoided, the time for restarting normal channel competition after switching from the non-main channel to the main channel is opportunistically shortened, and the communication efficiency is improved.

The embodiments of the present application provide a wireless communication method and a device. An STA grouping function is introduced during channel contention, such that the allocation of a TXOP is more efficient, and the usage frequency of a multi-user uplink (MU UL) is increased, thus reducing the delay of uplink and downlink data transmission, and alleviating the delay jitter. The wireless communication method is applied to an STA, wherein the STA has uplink data to be transmitted. The method comprises: an STA sending a first MAC frame, wherein the first MAC frame is used for channel contention, and a channel contention result corresponding to the first MAC frame is associated with group information of the STA.

The present application provides a communication method and apparatus for use in providing a contention channel mechanism suitable for NearLink communication technology. The method comprises: a first node determining M measurement time domain resources; determining M time domain resources on the basis of the M measurement time domain resources; and on the basis of a state of the first node on a k-th time domain resource and / or a channel state measurement result on a k-th measurement time domain resource, determining a channel contention result of the first node in a first contention channel period, wherein the M measurement time domain resources are used for measuring channel states, M is an integer greater than 1, the k-th time domain resource is one of the M time domain resources, and the k-th measurement time domain resource is one of the M measurement time domain resources. There are many measurement time domain resources within the first contention channel period, so that a channel contention result can be more accurately determined by comprehensively considering a plurality of channel state measurement results, and the first node is also provided with more opportunities to contend for a channel, thereby increasing the probability that the first node obtains the channel.

The embodiment of the invention provides a wireless communication method and equipment, an STA grouping function is introduced in channel competition, the distribution of TXOP is more efficient, and the use frequency of multi-user uplink (MU UL) is improved, so that the time delay of uplink and downlink data transmission is reduced, and the time delay jitter is relieved. The wireless communication method is applied to an STA, the STA has uplink data to be transmitted, and the method comprises the following steps: the STA sends a first MAC frame; wherein the first MAC frame is used for competing for a channel, and a channel competition result corresponding to the first MAC frame is associated with grouping information of the STA.

The invention discloses a network access control method and system for a multi-band wireless local area network, and belongs to the technical field of wireless communication. The method comprises: on a first frequency band, an access point sends a probe response frame carrying a neighbor report element to a station device, the element comprising target beacon transmission time TBTT offset or target wake-up time TWT offset information of the access point on a second frequency band, and access permission information; and the site equipment calculates accurate scanning starting time based on the offset information, and executes a controlled access process according to the access permission information. According to the invention, by constructing a double-layer architecture of an auxiliary transfer layer and a target service layer and utilizing a cross-band accurate time sequence calibration and authority control mechanism, the problems of low discovery efficiency, high scanning power consumption, serious channel competition conflict, uneven load and the like of a 6GHz band network in the prior art are solved; and the access efficiency, the resource utilization rate and the user experience of the multi-band network are remarkably improved.

This invention discloses a method and apparatus for selecting hop nodes for wireless sensors. The method includes: extracting node information of the current node corresponding to the wireless sensor within a communication network; calculating node energy efficiency, node data packet transmission success rate, and node overall load based on the current node information; calculating neighbor node values ​​using the node energy efficiency, data packet transmission success rate, and node overall load; calculating a node overall value based on the neighbor node values; selecting the node with the largest overall value from several node overall values; and using the communication node with the largest overall value as the hop node. This invention calculates the node overall value through various node information and then selects nodes based on the overall value. This can filter nodes with short paths, low packet loss rates, and high communication performance, improving the accuracy and practicality of the selection process and avoiding serious problems such as data redundancy and radio channel contention.

A method and a communication device for communication can be applied to a WLAN system supporting IEEE 802.11ax next-generation Wi-Fi protocol, such as 802.11be, again such as 802.11bn, again such as 802.11bn next-generation, and the like 802.11 series protocol, and can also be applied to a wireless personal area network system based on UWB and a sensing system. In the method, when a first station detects interaction of an OBSS station about unavailable information, the first station can enable NPCA based on the length of a PPDU, that is, in the case of detecting a PPDU meeting the condition of triggering NPCA, switching from a main channel to an NPCA main channel, and switching back to the main channel based on the end time of the PPDU, so as to switch back to the main channel in time for channel competition, and avoid wasting transmission resources of the main channel.

The present application provides a communication method and a related apparatus. The method is applied to a power line communication-based communication network. In a frame transmitted to a first communication apparatus, a second communication apparatus not only occupies a first frequency resource, but also occupies a second frequency resource, so that a third communication apparatus easily detects that a channel corresponding to the frame is occupied, thereby reducing the probability of collisions during channel contention.

The application supports the related standards of IEEE (Institute of Electrical and Electronic Engineers), such as IEEE 802.11be, IEEE 802.11bn, IEEE 802.11bf, IEEE 802.15, Wi-Fi (Wireless Fidelity) 7, Wi-Fi 8, EHT, UHR, IMMW, UWB (Ultra Wide Band) or perception protocols, and also can support a spark link / nearlink standard protocol. Provided are a communication method and a communication device, a second station can learn an end moment when a first station is unavailable through first information, and learn that the first station needs the second station to assist in recovering medium synchronization based on second information. Therefore, the second station sends the first frame to the first station after the first station is unavailable, so that the first station can be assisted to recover the medium synchronization state more quickly, the first station can normally participate in channel competition, and possible transmission opportunities are prevented from being lost.

The invention provides a communication method and device, and is used for providing a competition channel mechanism suitable for a satellite flash communication technology. The method comprises the following steps: a first node determines M measurement time domain resources, determines M segments of time domain resources according to the M measurement time domain resources, determines a channel competition result of the first node in a first competition channel period according to a state of the first node on the kth segment of time domain resource and / or a channel state measurement result on the kth measurement time domain resource, the M measurement time domain resources are used for measuring the channel state, M is an integer greater than 1, the kth time domain resource is one of the M time domain resources, and the kth measurement time domain resource is one of the M measurement time domain resources. In the embodiment of the invention, the measurement time domain resources in the first competition channel period are more, multiple channel state measurement results can be comprehensively considered, the channel competition result can be more accurately determined, and the chance of the first node to compete for the channel is more, so that the first node has higher probability to compete for the channel.

This application provides a communication method and apparatus, relating to the field of communication technology, for ensuring fairness between an ML entity and an SL entity in channel contention. The communication method is applied to an ML entity, which supports a master link and at least one slave link. A backoff counter is configured on the master link, while no backoff counter is configured on the slave links. The communication method includes: the ML entity executing a backoff procedure for the master link based on the backoff counter; when the backoff counter value is 0, the ML entity transmits a first PPDU on each of K first links, where the K first links include the master link and K-1 first slave links, and the first slave links are in an idle state during a first inter-frame interval before the backoff counter value reaches 0. This application is applicable to multi-link channel access processes.

This application provides a channel contention method and a related apparatus. The method includes: After data transmission on a first link is completed or a block acknowledgment corresponding to data is received on the first link, a first non-access point station of a first multi-link device performs clear channel assessment CCA detection on a second link in a first time period, where a start moment corresponding to the first time period is the same as a moment at which the data transmission on the first link is completed; and when the CCA detection on the second link fails, the first non-access point station performs channel contention on the second link based on a second time period.

Example channel access methods and apparatus are described. One example method includes performing first channel contention by a multi-link device on a first link, where an initial value of a backoff counter in the first channel contention is determined based on a first value of a contention window. The multi-link device may perform second channel contention on the first link when a value of the backoff counter becomes 0 in the first channel contention and when the multi-link device does not perform transmission on the first link. An initial value of the backoff counter in the second channel contention is determined based on a second value of the contention window, and the second value is equal to the first value or a minimum value of the contention window.

The invention provides an MAC (Media Access Control) layer channel access method and device based on multi-service priorities. The method provided by the invention comprises the following steps: establishing a plurality of priority queues in a terminal; determining a first priority queue corresponding to each data packet based on the service type of the MAC layer data packet; determining the position of the data packet in a corresponding first priority queue and a first priority intensity value based on the time information of the data packet; determining a target data packet from the plurality of priority queues, and putting the target data packet into the tail of the sending queue; calculating a user service probability based on the user service level of each terminal; and determining whether to send data based on the user service probability, determining a channel competition mode based on the terminal density of the terminal when determining to send the data, determining a sending terminal of the current sending period based on the channel competition mode, and sending the data packet in the sending queue by the sending terminal.

Embodiments of the present application provide a wireless communication method and a device. An AP has the uplink multi-user sounding capability in a channel contention phase, so that the AP can reasonably select, on the basis of an uplink service demand quantity and a downlink service demand quantity, to grant a TXOP to an STA or an AP, thereby reducing the delay of uplink and downlink data transmission and relieving the delay jitter. The wireless communication method comprises: a first STA sends a first PPDU, the first STA having uplink data to be transmitted, wherein the first PPDU comprises a first MAC frame and a first identification field, the first MAC frame is used for contending for a channel, and the first identification field is used for indicating an AID of the first STA; or, the first PPDU comprises a second MAC frame, the second MAC frame is used for contending for a channel, and the second MAC frame is further used for triggering all STAs receiving the second MAC frame to feed back whether a medium needs to be acquired so as to transmit uplink data.

To ensure fairness of an SL entity in channel contention.SOLUTION: A communication method is applied to an ML entity, the ML entity supporting a primary link and at least one nonprimary link. A backoff counter is disposed on the primary link, and no backoff counter is disposed on the nonprimary link. The communication method includes a step in which the ML entity performs a backoff procedure of the primary link based on the backoff counter of the primary link; and a step in which when a count value of the backoff counter is 0, the ML entity sends a first PPDU on each first link in K first links, the K first links including the primary link and K-1 first nonprimary links, and the first nonprimary link being in an idle state in a first inter-frame space before a time point at which the count value of the backoff counter decreases to 0.SELECTED DRAWING: Figure 5

Embodiments of the present application disclose a communication method and apparatus. The method comprises: after being switched from a non-primary channel to a primary channel by using a non-primary channel access mode, an access point sends a transmission opportunity (TXOP) initial control frame to a station; and, on the basis of whether an acknowledgement frame is received, performs channel access. By using the embodiments of the present application, communication interference produced by changes in an OBSS TXOP on a primary channel is prevented, so that the time to resume normal channel contention after switching from a non-primary channel to a primary channel is opportunistically shortened, thereby improving communication efficiency.

The application relates to a channel competition method and device, which can limit the station from frequently initiating competition, thereby reducing interference on other devices. In the method, a station acquires a channel competition rule and performs channel competition according to the channel competition rule, and the channel competition rule is a first rule, a second rule, a third rule or a fourth rule. The first rule comprises that the number of RTS frames sent during the running of each competition timer in a plurality of competition timers is less than or equal to a first threshold value; the second rule comprises that channel competition is performed after a target time length; the third rule comprises that the station is prohibited from sending a clear to send (CTS) frame with a destination address of the station; and the fourth rule comprises that the station transmits an RTS frame as an initial frame to start a TXOP before the MSD timer expires, and the number of started TXOPs is less than or equal to a second threshold value. The fourth rule further comprises at least one of the following: a CCA-ED threshold before the MSD timer expires is dot11OFDMEDThreshold, or a condition for resetting the MSD timer to 0 is not set.

The application provides a 5G terminal power consumption optimization method and device based on discontinuous reception and a medium. The method comprises the following steps: constructing a Markov decision model according to the discontinuous reception state cycle length of a 5G terminal and the terminal state transition action, and obtaining the corresponding system time delay and energy saving trade-off benefit based on different terminal state transition actions; obtaining the target discontinuous reception activation state cycle length and the target terminal short sleep cycle length corresponding to the maximum state value of the Markov decision model according to the system time delay and the energy saving trade-off benefit, and constructing the optimal discontinuous reception cycle parameters corresponding to the 5G terminal; and sending the optimal discontinuous reception cycle parameters to the 5G terminal, so that the 5G terminal performs power consumption optimization adjustment according to the optimal discontinuous reception cycle parameters. The application reduces the additional power consumption and time delay overhead caused by beam search and channel competition of the 5G terminal in the unlicensed frequency band.

Provided in the present application is a multi-access point transmission method. The method comprises: in response to a trigger frame of a first access point, a second access point together with the first access point executing coordinated multi-access-point transmission; and after the second access point executes the coordinated multi-access-point transmission and confirms that the transmission has been successful, updating a channel contention parameter of the second access point, so as to reduce the probability of the second access point accessing a channel again, wherein the channel contention parameter is used for performing contention to obtain channel resources. Further provided in the present application are an access point device and a computer-readable storage medium.

The present invention belongs to the field of computer communication technology, and in particular to a method for dynamic channel allocation of communication links based on the Hongmeng system. The implementation steps include: establishing a collaborative communication monitoring module in the Hongmeng communication node, distributing and collecting multi-dimensional link status parameters such as channel idleness, and dynamically adjusting the collection period as the status changes; using the improved LSTM algorithm to build an evaluation model, integrating spatial coordinate frequency domain features and time series parameters to generate a channel status evaluation matrix; dynamically allocating channels based on channel stability, task priority and data type; setting a fast re-evaluation mechanism to reallocate when the channel score deviates from the threshold to ensure communication stability. The present invention improves channel resource utilization and communication stability through dynamic monitoring, intelligent evaluation and adaptive allocation. It is suitable for distributed IoT scenarios of the Hongmeng system and solves the problems of channel competition and real-time scheduling under high-density deployment.

The present application discloses a method and apparatus used for wireless communication. A first receiver receives a first message and a second message, the first message indicating a first transmission opportunity on a first channel, and the end moment of the first transmission opportunity being a first moment. The second message indicates that the first transmission opportunity ends at a second moment, the second moment being earlier than the first moment. A first transmitter sends a third message, the third message indicating a second transmission opportunity on the first channel, and the end moment of the second transmission opportunity being the first moment. The first channel is a main channel of a first basic service set, and a first node belongs to the first basic service set. The transmission time required by data to be sent of the first node is greater than the time which can be used for data transmission within the second transmission opportunity. According to the present application, delay reduction is facilitated, and the fairness of channel contention is ensured.