54results about How to "Avoid transmission conflicts" patented technology

A contention based resource configuration method is disclosed. The method includes: configuring, by a network device, a contention based resource parameter, wherein the contention based resource parameter comprises one or any combination of the following: a period and/or a frequency of a contention based resource block, the number of contention based resource blocks allocated once, a size of the contention based resource block, a modulation and coding scheme, and expected reception power; and notifying, by the network device, a user equipment of the contention based resource parameter. Through the technical solutions provided by the embodiments of the present invention, a network side may allocate a contention based resource more properly, and the user equipment may know the contention based resource parameter and use the contention based resource more properly and flexibly.

A technique is disclosed which achieves both a reduction of the power consumption and an efficient access control at each of wireless nodes in a wireless communication system. According to this technique, a given period at the beginning of which a beacon is transmitted from a gateway (GW) (100) is specified that it is divided into an active interval during which each wireless node (P2P tag) transmits/receives frames and a sleep interval during which the frame transmission/reception operations are inactive. Further, the active interval is divided into a plurality of timeslots having a fixed length, and in particular, divided into intervals during which different types, that is, the GW, fixed nodes (P2P-S tags) and mobile nodes (P2P-M tags) may perform their respective frame transmissions. Each P2P tag selects, from the intervals of its own type, a timeslot at random and uses the selected timeslot to be on standby for a random standby time and then transmit a frame including information to be used for determining the ID of that P2P tag, the selected timeslot and the standby time.

The embodiment of the invention provides a UCI transmission method, a UCI receiving method, a terminal and network equipment. The method comprises the step of multiplexing afirst UCI and a second UCIin the same channel for transmission under the condition that transmission time domain resources of a first uplink channel for bearing the first UCI and transmission time domain resources of a seconduplink channel for bearing the second UCI are overlapped. According to the embodiment of the invention, the UCI transmission conflict can be avoided so as to improve the UCI transmission effect of theterminal.

Provided is a data transmission method and device for a direct memory access controller. When multiple system-to-equipment DMA engines send reading request commands to a system through an arbitration mechanism, the system sends first messages or reading operation commands to be sent to equipment to a receiving massage distribution module, and the receiving massage distribution module analyzes the request identifiers of the first messages or the request identifiers of the reading operation commands, and sends the first messages or the reading operation commands to the corresponding system-to-equipment DMA engines according to the request identifiers; multiple equipment-to-system DMA engines send writing request commands to the system through the arbitration mechanism, the system sends writing operation commands to the receiving massage distribution module, and then transmits the writing operation commands to the equipment-to-system DMA engines, and then the equipment-to-system DMA engines send second messages to the system through the arbitration mechanism. Multiple sets of parallel DMA engines are adopted to work simultaneously, the efficiency of DMA equipment for receiving and sending data can be improved remarkably, and system performance can be improved.

The embodiment of the present invention provides an uplink data transmission method, device, apparatus, and system, and relates to the field of communication, wherein the method includesthat a first terminal sends uplink data of a first service type on a first uplink resource; the first terminal receives a scheduling indication sent by an access network access device, wherein the scheduling indication includes a starting location and a scheduling period of the semi-persistent scheduling; the first terminal stopping sending the uplink data of the first service type before the starting location;the first terminal, after the location, sends the uplink data of the first service type again according to the scheduling period. The first terminal determines the scheduling start location and the scheduling period according to the scheduling indication, and the first terminal performs the operations of suspending sending and resending according to the starting location, so that the uplink transmission of the first service type can avoid the uplink transmission of a second service type so as to ensure the transmission delay requirement of the second service type.

A system and method are described for reducing data transmission collisions in a shared transmission medium. In one embodiment, transmission priorities are set by means of priority-defining transmissions. In another embodiment, statistically equal access is assured by means of unique transmit start time slot pairs wherein the paired start time slots are substantially equally spaced in time from a center start time slot. In yet another embodiment, data transmission traffic analysis is used to set unique transmission start time slots or to select from pools of start time slots associated with classes of data to be transmitted, thus establishing relative preemption priorities. In still another embodiment, transmission begins in statically assigned start time slots that are subsets of an available array of transmission start time slots.

The invention provides an underwater acoustic network reservation multi-access method based on active time reversal, and relates to the technical field of underwater acoustic communication and underwater networks. Multiple access in the data transmission process among nodes, which is applicable to a distributed acoustic network MAC layer, is adopted, so that the transmission conflicts are avoided, the success probability and channel utilization rate of once transmission are substantially improved, and the networking energy consumption is lowered; by means of active TR space-time focusing and the space change characteristic of an underwater acoustic channel, the disadvantages are converted into advantages, the broadcasting characteristics of the underwater acoustic channel is weakened, the signal interference among adjacent links under a distributed multi-hop environment is effectively isolated, and the good transmission concealment and security of the multi-access method are realized by channel broadcasting weakening, so that the space multiplexing is improved, the network throughput is increased, the time delay of the system is shortened, and energy is saved.

The invention discloses a process layer tri-play message transport real-time scheduling method. The method includes the steps: slaves transmit time merging requests containing message feature information to a master; the master generates a message transport time node table according to the message transport feature data transmitted by all slaves, enters a mode of merging ready, and informs the slaves of time merging update information; the slaves update their message transport time node tables according to the time merging update information transmitted by the master; the master and the slaves both control message transport according to the same message transport time node tables. According to the method, the master is used to collect and analyze message transport feature data of all slaves in a network, message transport scheduling information, the message transport time node table, of the whole network is generated, the problem of possible message transport conflicts is prevented accordingly, and network delay stability, SV message uniformity and GOOSE message real-time transport are maximally increased.

The embodiments of the present application disclose a data transmission method and related products. The data transmission method includes the steps: establishing an NAN (neighbor awareness network) between a first NAN device and at least one second NAN device; receiving a file transmission request sent by each second NAN device in the at least one second NAN device, and obtaining at least one file transmission request; acquiring receiving association information that the first NAN device receives the plurality of files; according to the transmission association information of the at least onesecond NAN device and the receiving association information, determining a target transmission policy of the plurality of files; transmitting a transmission instruction to each second NAN device of the at least one second NAN device; and receiving the plurality of files sent by the each second NAN device of the at least one second NAN device, thus enabling the first NAN device to solve the transmission conflicts among the plurality of files and improve the transmission efficiency when performing multi-file transmission with the plurality of NAN devices.

The invention provides a time reversal underwater acoustic network multiple access method for inter-link interference suppression, which adopts multiple access suitable for a distributed underwater acoustic network MAC (Media Access Control) layer and an inter-node data transmission process, avoids transmission conflicts, greatly improves the probability of one-time transmission success and the channel utilization rate, and reduces the networking energy consumption. Through the active TR space-time focusing property, the space-variant characteristic of an underwater acoustic channel is utilized, the disadvantages are converted into advantages, the broadcast characteristic of the underwater acoustic channel is weakened, and the key effect of effectively isolating signal interference betweenadjacent links in a distributed multi-hop environment is achieved; the power control method not only saves the transmitting power, but also greatly reduces the probability of conflict.

The invention discloses an information transmission method, device and system, which relate to the technical field of communications and can solve the problem of transmission conflicts of a pluralityof types of services when resources for transmitting the plurality of types of services overlap. According to the specific scheme, M power control parameters are determined, the M power control parameters are power control parameters of M pieces of uplink information to be sent, each piece of uplink information is uplink control information or uplink data information, M is an integer larger than or equal to 2, sending priorities of the M pieces of uplink information are determined according to the M power control parameters, and under the condition that the sending resources of the M pieces ofuplink information are all overlapped, at least one piece of uplink information in the M pieces of uplink information is sent according to the sending priority. The embodiment of the invention is applied to the process that the UE sends at least one piece of uplink information in the M pieces of uplink information according to the sending priorities of the M pieces of uplink information.

The invention relates to a pickup, and discloses a multi-channel audio pickup method and system based on a synchronous Ethernet. The method comprises the following steps: in N time slices of a synchronization period, a switch sends synchronization cells to N paths of audio collection ends in sequence, each time slice sends the synchronization cell corresponding to the audio collection end to one path of audio collection end, and each time slice sends the synchronization cell corresponding to the audio collection end to the other path of audio collection end; the synchronous cell comprises synchronous clock information and a signal-to-noise ratio of an audio signal in audio data which is received in a previous synchronous period and corresponds to the audio collection end; and when each path of audio collection end receives the synchronous cell corresponding to the path, the cached audio data is packaged and sent to a switch, a local clock is calibrated according to the synchronous clock, and voice enhancement processing is performed on a preset frequency band signal in subsequent audio collection according to the signal-to-noise ratio. According to the embodiment of the invention, the problem of synchronous transmission of multiple paths of audio data is solved, the transmission delay is low, and the transmission requirement of high real-time performance of the audio signal is met.

The invention discloses a data scheduling method based on a time-sensitive network. The method comprises the following steps: acquiring current network data in a transmission network based on the time-sensitive network; determining a transmission path used by the current network data; acquiring target network data using the same transmission path as the current network data in the transmission network; judging whether the current network data or the target network data can be scheduled at the current industrial moment or not to obtain a judgment result; and performing data scheduling accordingto the judgment result. Through the technical scheme of the invention, reasonable data scheduling can be performed according to the judgment result of whether the current network data or the target network data can be scheduled or not at the current industrial moment, so that transmission conflicts of different network data on the same transmission path are avoided.

The embodiment of the present invention discloses an indication method, a coordinator and a user equipment of an uplink channel state, which can avoid the transmission conflict problem of the uplink channel and improve the throughput of the system. The method in the embodiment of the present invention includes: the coordinator determines the state of the uplink channel; the coordinator generates a downlink signal according to the state of the uplink channel; the coordinator sends the downlink signal to the user equipment UE; wherein the downlink signal is a downlink A signal frame or an idle pattern frame, the frame headers of the downlink signal frame and the idle pattern frame both include an uplink channel state indication field, and the uplink channel state indication field is used to indicate the state of the uplink channel; or the downlink signal is an idle pattern sequence, where the idle pattern sequence indicates the state of the uplink channel.