71 results about "Beam hopping" patented technology

The invention provides a beam hopping control method, electronic equipment, a storage medium and a program product, and the method comprises the steps that a satellite load receives a transparent forwarding signal sent by a base station and corresponding beam control information, the beam control information is sent earlier than the transparent forwarding signal, and the beam control information is used for the satellite load to carry out beam hopping control; the satellite load determines the effective moment of the beam control information according to the transparent forwarding signal and the local frame header moment of the satellite load, and the effective moment of the beam control information is synchronous with the transparent forwarding signal. Under the condition that the base station is not required to synchronously send the transparent forwarding signal and the corresponding beam control information, the satellite load can determine the effective moment of the beam control information according to the transparent forwarding signal sent by the base station and the local frame header moment of the satellite load, so that the effective moment of the beam control information is synchronized with the transparent forwarding signal; therefore, accurate and efficient control of the satellite load hopping beam can be realized.

The invention discloses a multi-satellite communication network dynamic beam scheduling and power control method, and belongs to the field of resource allocation in satellite communication. The implementation method comprises the following steps: constructing a multi-satellite communication network model, constructing a multi-satellite communication network data queue model based on the network model, and constructing a multi-satellite communication network energy queue model; constructing a queue control model based on a Lyapunov equation; constructing a joint optimization problem of hopping beam scheduling and power control based on a drift and penalty function; reconstructing and approximating the joint optimization problem of the hopping beam scheduling and the power control by using an SCA algorithm; decomposing an approximated joint optimization problem by adopting a Benders decomposition framework, wherein the joint optimization problem is divided into a power control sub-problem and a beam scheduling main problem; solving the power control sub-problem and the beam scheduling main problem to obtain an optimal solution; and iterative optimization is carried out, and dynamic beam scheduling and power control of the multi-satellite communication network are realized according to the optimal solution, so that a multi-satellite network dynamic system reaches long-term stability, and user fairness is realized on flow distribution.

The invention discloses a dynamic beam hopping and resource allocation method for NGSO satellite security communication, and belongs to the field of sixth-generation mobile communication security communication and wireless resource allocation. According to the method, significant non-uniformity of distribution of ground flow requirements in a time domain and a space domain is considered, and a satellite-ground security communication network dynamic beam hopping and resource allocation problem model is constructed by considering ground user flow requirements and composition elements and channel characteristics of an NGSO multi-beam satellite network. Through joint optimization of satellite hopping beam scheduling, power resource allocation and auxiliary interference unmanned aerial vehicle deployment strategies, service requirements of different users and ground eavesdropping environments are dynamically adapted, and the safety throughput and queue delay fairness of the system are improved. According to the method, mixed integer linear programming modeling is adopted, and a low-complexity approximation algorithm is combined, so that the method not only has optimality guarantee, but also can be deployed and operated in an actual satellite communication system, and thus unification of secure communication and efficient resource scheduling is realized.

A method of a base station may comprise: configuring an allocation time, a hopping pattern period, and a beam hopping scheduling interval; generating a hopping pattern by allocating beams to N×M hopping slots according to scheduling information collected from a plurality of terminals based on a number M of simultaneously transmittable beams, a number N of hopping rounds within the hopping pattern period, a basic allocation power, and the allocation time; and transmitting information on the hopping pattern to a terminal, wherein the hopping pattern period is an integer multiple of the allocation time, the beam hopping scheduling interval is an integer multiple of the hopping pattern period, and M and N are positive integers.

A non-terrestrial network communication method, a base station, and user equipment, relating to the field of wireless communications. A base station determining the gain of each beam position in a first beam hopping position period; according to the gain of each beam position in the first beam hopping position period, allocating a beam hopping pattern for each beam position in a second beam hopping position period, wherein the first beam hopping position period is the beam hopping position period preceding the second beam hopping position period; and sending the beam hopping pattern of each beam position in the second beam hopping position period to user equipment. A "beam hopping position" activation mode is used in an activated beam, and on the basis of the beam hopping pattern, more refined activation control at the granularity of beam positions within the beam is achieved, satellite transmit power is further concentrated, and satellite coverage and service performance are improved.

Systems, methods, and circuitries are provided for adjusting the timing of random access channel occasions (ROs) and paging occasions (POs) based on a beam coverage pattern. In on example, a method includes determining a sequence of one or more radio frames that include random access channel (RACH) occasions (ROs) or paging occasion (PO) based on a beam coverage pattern with respect to a user equipment (UE), wherein the UE has discontinuous beam coverage according to the beam coverage pattern. The method includes monitoring for a RACH message from the UE or transmitting a paging message to the UE during at least one of the sequence of radio frames.

The invention relates to the technical field of satellite communication, in particular to a mobile phone direct connection communication system resource allocation method based on double-satellite distributed beam forming, which comprises the following steps of: initializing a double-low orbit satellite communication scene, establishing a cooperative communication model based on distributed beam forming, and establishing a beam hopping decision model based on A3C reinforcement learning. Through joint optimization of beam hopping and power distribution, the method provided by the invention can provide precise high-power signal enhancement for a smart phone user, and dynamically adapt to spatial and temporal changes of ground service requirements, so that the power and time resources of a double-satellite system can be fully utilized, and the method is suitable for popularization and application. And finally, collaborative optimization of service fairness between the users and the overall energy efficiency of the system is realized.

Example embodiments of the present disclosure are directed to a solution for beam hoping in wireless communication. A method comprises receiving, from a second apparatus, a configuration of one or more hybrid periods within a beam hopping cycle associated with at least one beam footprint or a cell; and at least based on a reception of the configuration and / or an activation indication for at least one hybrid period, perform, during the at least one hybrid period, at least one of a downlink reception or an uplink transmission.

The invention discloses a block coordinate descent and matching theory-based low-orbit satellite hopping beam calculation unloading method, and belongs to the field of low-orbit satellite communication. The method comprises the following steps: firstly, a core network counts the reported service demand of each user, considers the lower limit of time delay satisfaction, and constructs a hopping beam and resource scheduling initial model; and then, based on a matching theory, carrying out hopping beam pattern initialization, and obtaining an optimal solution of unloading-resource scheduling by using a block coordinate descent algorithm, thereby obtaining the delay satisfaction degree of each sink node corresponding to the hopping beam pattern. And then, the core network randomly selects satellites and two different time slots to execute exchange matching, updates a beam hopping pattern and unloading-resource scheduling, selects and rejects the updated beam hopping pattern according to the time delay satisfaction degree, and iteratively updates repeatedly until the number of times is reached. And sending the finally reserved hopping beam pattern and the corresponding optimal resource scheduling strategy to each user / satellite node, and carrying out beam lightening and unloading strategy execution. According to the invention, the management complexity is effectively reduced.

The invention discloses a DTX (Discontinuous Transmission) and / or DRX (Discontinuous Reception) configuration method, device, equipment, medium and program product. A network side sends cell-level and / or beam-level DTX and / or DRX configuration information to a terminal side for data transceiving. By adopting the technical means of the invention, the DTX and / or DRX configuration of the beam granularity can be provided, the DTX and / or DRX mechanism enhancement of the NTN multi-beam hopping scene can be realized, and the power consumption of the NTN system can be effectively reduced.

The embodiment of the invention provides a satellite communication method based on a hopping beam, a cell grid division method and a base station, and relates to the technical field of satellite communication. The longitude and latitude position of a user terminal is obtained; obtaining a preset cell grid definition rule; the cell grid definition rule comprises a grading and partitioning rule based on geographic latitude and longitude and is configured to enable the grid area to be smaller than the minimum coverage range of a satellite beam; according to the latitude and longitude positions and the cell grid definition rule, determining the latitude and longitude position of a central point of a target cell grid where the user terminal is located; beam pointing is controlled according to the longitude and latitude position of the central point, aggregation service is provided for the user terminal in the target cell grid, the effect of reducing satellite calculation complexity is achieved, and the method can be applied to a beam resource scheduling scene in a satellite internet communication scene or a position management scene of the user terminal in a core network.

The invention discloses a low-orbit satellite beam hopping and power distribution method. The method comprises the following steps: establishing a system model of a low-orbit satellite beam communication system, and formulating an optimal beam scheduling target in the system model into a utility function G; solving the maximum value of the utility function G through the two cooperative agents; wherein the first collaborative agent is a beam hopping agent and is used for optimizing a global beam hopping mode; the second collaborative agent is a power distribution agent and is used for determining the communication power of each satellite according to a beam hopping decision; and determining an optimal beam scheduling method of each satellite in the low-orbit satellite beam communication system according to the maximum value of the utility function G. According to the invention, limited satellite resources can be matched with non-uniform service requirements, load requirements between satellites are balanced, fair service provision is ensured, and mutual interference between beams is reduced. A simulation experiment result shows that the method is obviously superior to an existing method in a plurality of key performance indexes.

Provided are a communication method and a communication apparatus, which are applied to the field of communications. The method comprises: determining a plurality of pieces of SSB period information, wherein each piece of SSB period information comprises an SSB period length and / or an SSB start offset; and sending an SSB signal on the basis of the plurality of pieces of SSB period information. Compared with the solution of the same set of SSB period information in the related art, the present application introduces a plurality of pieces of SSB period information, so that a network can use different periods to send SSBs for different regions and / or different time periods. Moreover, a terminal device can determine the position of an SSB on the basis of the plurality of pieces of SSB period information, thereby helping to reduce the complexity of searching for the SSB by the terminal device. In addition, in order to better support an NTN beam hopping scenario, a configuration solution regarding the transmission power is further provided. By configuring power information of a plurality of SSBs to adapt to the NTN beam hopping scenario, different beams are allowed to use different powers at different times for transmission.

Systems, methods, and circuitries are provided for monitoring for and transmitting system information based on a beam coverage pattern or extended synchronization signal block. In one example, a method includes, determining a sequence of radio frames in which to transmit system information based on a beam coverage pattern for a user equipment (UE) that is out of beam coverage during a portion of the beam coverage pattern; and monitoring for or transmitting system information during the sequence of radio frames.

The invention relates to the technical field of satellite communication, in particular to a low-orbit satellite beam hopping method, device and equipment. The low-orbit satellite beam hopping method provided by the embodiment of the invention is applied to a low-orbit satellite communication system, and aims to solve the technical problem that the service continuity is seriously influenced due to the fact that terminal equipment is difficult to finish synchronization quickly in high-dynamic scenes such as extremely short beam service time, high-speed terminal movement and frequent cross-satellite switching. According to the method, on the basis of a 5G NTN protocol framework, on the premise that an uplink channel is not modified at all, only the PDSCH is subjected to adaptive adjustment, and efficient resource scheduling and rapid synchronization capability are achieved through refined hopping beam granularity design and an optimized frame structure.

The invention provides a digital twinborn enabling low earth orbit satellite network beam hopping and power distribution method. The method comprises the following steps: constructing a global digital twinborn model covering a plurality of low earth orbit satellites and a plurality of ground cells; based on the predicted ground cell service requirements, adopting an MA3C-BH algorithm to optimize a beam hopping mode for each low-orbit satellite; and each low-orbit satellite optimizes power distribution for each beam by adopting a multi-agent depth deterministic strategy gradient algorithm by taking maximization of the total throughput of a system and minimization of time delay fairness as an optimization target on the premise of meeting single-beam power constraint and satellite total power constraint according to the determined beam hopping mode. According to the method, a twin model and predicted ground cell service requirements are constructed, beam jump coordination and load balancing among multiple satellites are realized by using an MA3C-BH algorithm, and fine power distribution in a single satellite is completed based on an MAPA algorithm, so that the purpose of collaborative optimization of throughput, load balancing and delay fairness in a multi-satellite multi-beam scene is achieved.

The invention relates to the technical field of communication, and particularly provides a communication method, device and system, electronic equipment, a storage medium and a product. In the invention, a terminal can receive first information from a network node, wherein the first information is used for indicating m sets of discontinuous reception (DRX) / discontinuous transmission (DTX) configuration information; m is an integer greater than 0; afterwards, the terminal can receive and / or send data and / or signaling and / or perform cell access according to the first information. Wherein the m sets of DRX / DTX configuration information can have different configuration granularity relations, the different DRX / DTX configuration information comprises active state information and inactive state information, multi-level sub-periods can be nested in a first period in the DRX / DTX configuration information, and the first period in the DRX / DTX configuration information can be composed of a plurality of sub-periods with different lengths. In conclusion, according to the technical scheme provided by the invention, the reasonable receiving and transmitting of the data and / or signaling by the terminal can be realized under the dual mechanisms of beam hopping and DRX / DTX.

The present disclosure relates to the technical field of communications, and in particular to a communication method and apparatus, a system, an electronic device, a storage medium, and a product. In the present disclosure, a terminal may receive first information from a network node, wherein the first information is used for indicating m sets of discontinuous reception (DRX) / discontinuous transmission (DTX) configuration information, and m is an integer greater than 0; and then, the terminal may receive and / or transmit data and / or signaling and / or perform cell access on the basis of the first information. The m sets of DRX / DTX configuration information may have different configuration granularity relationships; and each set of DRX / DTX configuration information comprises information of an active state and an inactive state, multiple levels of sub-periods may be nested in a first period in the DRX / DTX configuration information, and the first period in the DRX / DTX configuration information may consist of a plurality of sub-periods of different lengths. In summary, the technical solution provided by the present disclosure enables the terminal to appropriately transmit and receive data and / or signaling under a dual mechanism of beam hopping and DRX / DTX.

Various solutions for enhancements on cell reselection in wireless communications are described. An apparatus receives a configuration from a serving cell, and performs measurements on the serving cell and the neighbor cell (s) based on the configuration. The configuration includes at least one of the following parameters: (i) a first parameter and a second parameter for assisting the apparatus with an elevation-based cell reselection; (ii) a third parameter indicating a number of beam hopping synchronization signal blocks (SSBs) to average for cell measurement derivation; (iii) a fourth parameter indicating a threshold for consolidation of layer-1 (L1) measurements per beam SSB index; and (iv) a fifth parameter defined as a sum of a received signal power term and a beam distance ratio term with respective weighting factors.

The invention relates to a cross-cell switching resource management method and device under satellite beam hopping, and belongs to the technical field of satellite communication. According to the invention, a resource adjustment strategy is executed according to the position of the terminal and the allocation condition of the beam resources, and resource allocation is carried out according to a decision sequence of only adjusting beam pointing, allocating other time slot resources in the beam to point to a new position area, changing beams to serve the terminal and changing satellites to allocate resources for the terminal, so that optimal use of resources by cross-cell switching terminals is ensured; the resource utilization rate is improved, large adjustment of resources is reduced as much as possible, and engineering implementation of satellite-ground products is facilitated.

Embodiments of the present application relate to the technical field of wireless communications and the like, and provide a communication method and apparatus. The method comprises: obtaining at least one beam hopping pattern, the beam hopping pattern comprising at least one piece of first configuration information corresponding to at least one beam, and the first configuration information indicating the duration of at least one first beam state of the beam; and applying a first beam hopping pattern among the at least one beam hopping pattern. The communication method and apparatus provided in the embodiments of the present application are used for avoiding unnecessary energy consumption by a terminal device.

The invention provides a GEO satellite user access method and system based on bidirectional beam hopping, and relates to the field of satellite communication, and the method comprises the steps: employing a user-oriented beam hopping polling strategy for spacecraft users, and carrying out the processing of the access demands of the spacecraft users through a first access strategy; a wave position-oriented wave beam hopping polling strategy is adopted for the earth surface type users, and the access requirements of the earth surface type users are processed through a second access strategy; and under the condition of determining to initiate network access, completing transmission and interaction of access control information in a time interval in which a beam covers a user by using a forward backward hopping beam channel of a satellite system. According to the invention, differentiated beam scheduling strategies are adopted for the position information characteristics of spacecraft users and earth surface users, so that the user access time efficiency and the utilization rate of beam resources can be improved; beam hopping is adopted in the forward direction and the backward direction, so that the user access efficiency is improved, and the overall performance of a satellite communication system is remarkably improved.

Embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium. The method comprises: receiving first information sent by a network device, wherein the first information is used for indicating a first time at which a terminal performs monitoring. The technical solution provided in the embodiments of the present disclosure enables a communication mechanism to be adapted to an introduced beam hopping technology.

The invention provides a hopping beam scheduling method based on a time slot division rule in a low earth orbit satellite network, and belongs to the technical field of satellite communication and resource scheduling. The method comprises the following steps: establishing a satellite-ground topology and visibility matrix; time slots are dynamically divided according to the ground service load weight, and time domain resource self-adaptive distribution is achieved; constructing a three-dimensional scheduling matrix according to a time slot result, and controlling multi-satellite beam dynamic jump; inter-beam interference is calculated, transmitting power is adjusted according to a threshold value, and interference suppression and power balance are achieved; the ground center issues an instruction and collects feedback information for closed-loop optimization. According to the invention, by introducing a dynamic time slot division mechanism, multi-satellite cooperative beam time domain scheduling and interference adaptive control are realized. Compared with the prior art, the method has the advantages that the spectrum utilization rate can be remarkably improved, inter-satellite interference is reduced, and the service continuity and the system throughput of a hot spot area are improved.

Embodiments of systems and methods are disclosed that relate to Handover (HO) or Conditional Handover (CHO) in which source and target cells operate in accordance with a same or different beam on / off schedules. In one embodiment, a method performed by a UE comprises obtaining information about an on / off schedule of at least one beam of at least one cell involved in a HO or CHO, where the at least one cell comprises a source cell for the HO or CHO, at least one candidate target cell for the HO or CHO, or both the source cell and the at least one candidate target cell for the HO or CHO. The method further comprises performing one or more actions related to the HO or CHO based on the information about the on / off schedule of the at least one beam of the at least one cell.

The embodiments of the present disclosure relate to a paging processing method, device and apparatus, and a medium. The method comprises: acquiring beam position system information, wherein the beam position system information comprises beam position association information and paging configuration information which correspond on a one-to-one basis to a first beam position where a user equipment is located and adjacent beam positions of the first beam position; on the basis of the beam position association information of the adjacent beam positions, determining, from among the adjacent beam positions, a second beam position for the next dwell of the user equipment; and on the basis of the paging configuration information of the first beam position and the paging configuration information of the second beam position, performing paging monitoring processing. In the present technical solution, beam position system information of adjacent beam positions of the current beam position is further broadcast under the current serving beam position, thereby reducing the paging power consumption of a user equipment while implementing paging processing in a satellite beam hopping mode.

This invention claims protection for a low-Earth orbit (LEO) satellite beam scheduling method for ensuring QoS across multiple services, belonging to the field of wireless communication technology. Addressing the difficulty in guaranteeing differentiated QoS in multi-service scenarios, leading to high average queuing delay and packet loss rate, a beam scheduling scheme based on dynamic beam position partitioning is proposed. First, a LEO satellite network model based on hopping beams is constructed, and a dynamic beam position priority modeling method is proposed based on this. A scheduling weight function is defined according to the delay margin of each type of data packet to achieve quantitative evaluation of ground beam position priority. Second, an optimization problem model is established with the objective of minimizing the weighted sum of the system's average queuing delay and packet loss rate, and this is decoupled into two sub-problems: beam position partitioning and solving the optimal beam hopping pattern for a single cycle. Finally, a beam position partitioning algorithm based on an improved P-center algorithm and an optimal hopping pattern solving algorithm based on an improved genetic algorithm are proposed to solve the sub-problems.

The invention discloses a flow balance type flexible clustering method for beam hopping satellite communication, which is applicable to the field of satellite communication. By constructing a flow demand and spatial distribution model of a beam hopping satellite coverage cell, each cluster center obtains a feasible cell set meeting a spatial isolation condition, and the feasible cell set is used for flow balance-oriented clustering configuration; the number of wave beams activated through a satellite time slot is limited, the effectiveness of resources on a satellite is represented, and the cluster size is limited; a clustering method based on splitting-merging operation and meeting spatial constraint and cluster size limitation is provided, a greedy clustering sub-process with flow balance is designed, flow load judgment and splitting / merging operation are executed on clusters through iterative loop, and a final clustering result is determined based on an inter-cluster flow difference minimization rule; according to the method, flexible clustering and flow balanced scheduling of satellite coverage beams are realized under limited beam resources through spatial isolation and flow dynamic adaptation characteristics of a satellite beam coverage cell.

Techniques are described for demodulating burst communications, such as for demodulating satellite beam-hopping communications in a demodulator of a very small aperture terminal (VSAT) satellite receiver. The demodulator includes a front-end and a sample / symbol domain processor. The front-end is configured to selectively operate in either of an adaptive mode or a freeze mode. During demodulation, the sample / symbol domain processor detects start of superframe (SOSF) and end of superframe (EOSF) locations to determine where each dwell time and non-dwell time begins and ends. During at least a portion or each dwell time, the front-end is set to operate in adaptive mode, in which the front-end uses feedback control from the sample / symbol domain processor to continuously adapt to timing and frequency of the received burst transmission. During at least the duration of each non-dwell time, the front-end is set to operate in freeze mode, in which adaptation of the front-end is frozen.

An information transmission method and a communication apparatus. In multi-satellite joint transmission of a non-terrestrial network, a primary satellite may send, to a terminal device by means of signaling in advance, identifiers of TCI states (i.e., a TCI state sequence) of secondary satellites corresponding to the terminal device within different time periods (e.g., different beam hopping periods). Alternatively, the following information is added to the TCI state corresponding to each secondary satellite: a time length during which an identifier (tci-StateId) of the current TCI state remains unchanged, and an identifier (next-tci-StateId) of the TCI state within the next time period. After receiving the signaling or the TCI state, the terminal device may determine a corresponding TCI state within a corresponding time period, and then determine a corresponding secondary satellite on the basis of the TCI state, thereby avoiding the situation where upon each change of the secondary satellite, it is necessary to indicate the change of the secondary satellite by means of activating one TCI state, and thus reducing signaling overheads.