476 results about "Transmission scheduling" patented technology

A method and an apparatus for scheduling transmissions of a plurality of cells in a wireless communications system including one or more base stations is provided. The method comprises providing a set of virtual channels to enable an intra-cell transmission orthogonal to another transmission within each cell of the plurality of cells and inter-cell transmissions orthogonal to other transmissions across a cluster of cells associated with the one or more base stations. The method further comprises exchanging signaling messages between two or more base stations to coordinate scheduling of the intra-cell transmission with the inter-cell transmissions for the cluster of cells. For optimizing a parameter associated with scheduling of a plurality of users from a cluster of cells in a wireless communication system, an optimal power level for the parameter of each active user may be searched to maximize an indication of system capacity of the wireless communication system. This enables a coordinated jointly scheduling of the users active in the cluster of cells based on the optimal power levels such that the total interference within the cluster may be minimized to maximize the system throughput / capacity.

A method of transmitting scheduling information in time-division-duplex(TDD) system is provided. The method comprises configuring a radio frame, the radio frame comprising at least one downlink subframe and at least one uplink subframe, wherein a downlink subframe is reserved for downlink transmission and an uplink subframe is reserved for uplink transmission, and transmitting scheduling information on a downlink control channel in a downlink subframe, the scheduling information comprising an uplink indicator and uplink resource assignment, the uplink indicator indicating which at least one uplink subframe the uplink resource assignment is valid for. Data can be efficiently transmitted by using an uplink indicator which indicates a specific location of a subframe.

An improved method for packet transmission scheduling and an improved packet transmission scheduling system in mobile telecommunication systems. Both the improved method and the system especially adapted to be used for UMTS systems. A quality of service scheduling of multiple data flows in a mobile telecommunication system is proposed, wherein a priority order of protocol data units (PDU) of multiple data flows with regard to predefined flow's quality of service requirements is determined, a serving of the protocol data units (PDU) is performed by dynamically determining transport blocks (TB) to be transmitted by the physical layer (PHY-layer) with regard to the defined priority order and in dependence of allocated radio resource constraints, by assigning to each transport block (TB) a respective associated transport format (TF), and by creating transport block sets (TBS) with the determined transport blocks (TB) to be transmitted by the physical layer (PHY-layer) by using the respective associated transport format (TF) as assigned.

In various embodiments of the present invention, methods are provided for transmitting scheduling requests over uplink channels. One embodiment includes determining whether a first resource for transmission of a scheduling request over an unscheduled uplink control channel is allocated concurrently with a second resource for transmission of user data over a scheduled uplink shared channel. This embodiment also includes encoding the user data and bit(s) of control information to form encoded information for transmission using the second resource. The additional bit(s) indicate whether the mobile unit is transmitting the scheduling request. Another embodiment includes determining whether a first resource for transmission of a scheduling request over an unscheduled uplink control channel is allocated concurrently with a second resource for transmission of other control information over the unscheduled uplink control channel. This embodiment includes modulating the scheduling request and the other control information into one symbol for transmission using the first resource.

A runtime adaptable protocol processor is disclosed. The processor architecture provides capabilities to transport and process Internet Protocol (IP) packets from Layer 2 through transport protocol layer and may also provide packet inspection through Layer 7. Further, a runtime adaptable processor is coupled to the protocol processing hardware and may be dynamically adapted to perform hardware tasks as per the needs of the network traffic being sent or received and / or the policies programmed or services or applications being supported. A set of engines may perform pass-through packet classification, policy processing and / or security processing enabling packet streaming through the architecture at nearly the full line rate. A scheduler schedules packets to packet processors for processing. An internal memory or local session database cache stores a session information database for a certain number of active sessions. The session information that is not in the internal memory is stored and retrieved to / from an additional memory. An application running on an initiator or target can in certain instantiations register a region of memory, which is made available to its peer(s) for access directly without substantial host intervention through RDMA data transfer. A security system is also disclosed that enables a new way of implementing security capabilities inside enterprise networks in a distributed manner using a protocol processing hardware with appropriate security features.

The invention includes a method and apparatus for generating a link transmission schedule for handling traffic variation in wireless networks without dynamic scheduling or routing. The method includes determining fixed traffic capacities associated with respective wireless links of a wireless network according to a routing algorithm, and generating, using the routing algorithm and the fixed traffic capacities, a link transmission schedule including at least one condition by which traffic is transmitted using each of the network links. The link transmission schedule is adapted to remain substantially fixed during dynamic traffic changes. The routing algorithm may be a two-phase routing algorithm in which traffic is distributed by each node in the wireless network to every node in the wireless network using traffic split ratios. For two-phase routing, fixed traffic capacities may be determined using ingress and egress traffic capacities and traffic split ratios associated with respective nodes in the wireless network.

A method for communicating over a wireless backhaul channel comprising generating a radio frame comprising a plurality of time slots, wherein each time slot comprises a plurality of symbols in time and a plurality of sub-carriers in a system bandwidth, broadcasting a broadcast channel signal comprising a transmission schedule to a plurality of remote units in a number of consecutive sub-carriers centered about a direct current (DC) sub-carrier in at least one of the time slots in the radio frame regardless of the system bandwidth, and transmitting a downlink (DL) control channel signal and a DL data channel signal to a first of the remote units, wherein the DL data channel signal is transmitted by employing a single carrier block transmission scheme comprising a Discrete Fourier Transform (DFT) spreading for frequency diversity.

A method for handling a contention-based random access procedure in a user equipment (UE) of a wireless communication system is disclosed. The method includes steps of sending a Scheduled Transmission message, which applies an HARQ (Hybrid Automatic Repeat request) process for transmission, starting a Contention Resolution Timer and monitoring a PDCCH (Physical Downlink Control Channel), and flushing a buffer of the HARQ process used for transmission of the Scheduled Transmission message when a contention result of the random access procedure is determined.

A method of performing packet level transmission scheduling in a communications systems including a plurality of cells,each cell including a base station and plurarity of mobile stations. The method performs scheduling while considering radio resource allocation at the wireless access node. In a schedule plan phase of the method, average power and average effective data rate are determined for all mobile stations in the system. In addition, the planned fractions of frames rho that each mobile in the system will transmit is determined so that resources are allocated fairly. In the actual schedule phase of the method, current power and effective data rate values are compared to the average power values. This information along with the rho values is used to determine the actual schedule of packet transmissions for all mobiles in a particular cell.

A communications protocol in a system such as an IEEE 802.11 wireless LAN multi-hop system providing transmission scheduling information is disclosed. The transmission scheduling is formatted within a CF-Poll+Data+SIPS data frame transmitted by the point coordinator (PC) which may be any one of the access point (AP) nodes transmitting in turn as dictated by the scheduling parameters within the scheduling information parameter set (SIPS). The SIPS comprises an offset field, the time left for the presently functioning PC; a delay field, where an AP delays functioning as a PC; and the interval field, the time allowed for an AP to function as a PC. The subsequent scheduling of assigned transmission slots by providing boundaries for the transmission frames through SIPS eliminates collisions resulting from multiple units transmitting simultaneously, thereby supporting interactive media and voice communications on WLAN multi-hop systems.

The present inventions relates to a system for communication of data information, e.g. multimedia content, over a wireless network connecting a plurality of end user stations and supporting broadcast / multicast transmission. It comprises central server means with at least one central cache arrangement for storing at least selected parts of data information relevant for at least a segment of the wireless network, transmission scheduling means for transmission scheduling, central cache arrangement control means for, by using scheduling information, controlling a central cache arrangement push engine for multicast / broadcast pushing of information to end user stations within said at least one segment of the wireless network. The end user stations comprise or are associated with proprietary, local push content caching means for holding the pushed data information, and, upon request by the respective end user, selected data information may be presented to the end user in a customized manner via a user client from said local caching means.

The invention discloses a method and device for transmitting uplink control information in a wireless communication system. The method includes the steps that the number of channel state information reports needing transmitting in the same subframe is determined; automatic retransmission requests are mixed to determine or deny the number of HARQ-ACKs or NACKs; whether dispatch requests need to be transmitted in the same subframe or not is determined; a corresponding physical uplink control channel format is selected to transmit the CSI reports and / or the HARQ-ACKs or NACKs and / or the dispatch requests in the same subframe according to the determined result so that reusing of multiple pieces of PUCCH format information on the same antenna port is avoided. According to the method and device for transmitting the uplink control information in the wireless communication system, good PAPE performance is achieved, the throughput is not reduced systematically, and limited resources are effectively utilized.

A method for collocated nodes communicating over a first interface to agree on a conflict-free transmission schedule among themselves, which they can then use to collaborate with neighbors accessed through a second interface, for example through wireless links in order to obtain collision-free transfers of unicast, multicast and broadcast packets over wireless channels, and channel access delay guarantees. The collocated nodes behave as a single virtual node for the purpose of establishing a consistent transmission schedule throughout the nodes of a multihop wireless network.

The invention discloses a time-sensitive network gating mechanism traffic shaping and route planning scheduling method, and relates to the technical field of wired communication networks. The method comprises the following steps of: performing routing and transmission joint scheduling on periodic TC traffic according to real-time requirements and priorities, and performing communication transmission scheduling of non-TC traffic on the premise of not influencing deterministic real-time transmission of the TC traffic; according to a TC queue GCL design and a GCL cycle idle period plan, generating an output queue GCL of each switch port, generating an optimal joint scheduling scheme of mixed traffic transmission based on the optimal communication transmission path set of the TC traffic and the non-TC traffic, generating configuration files of the switch ports and the terminal equipment through related configuration software, and configuring the configuration files to each switch and the terminal equipment. On the premise of ensuring multi-period TC traffic deterministic real-time transmission with different real-time requirements, the communication transmission performance of the non-TC traffic is improved as much as possible, and the problems of communication resource waste and schedulable solution space reduction are avoided.

Systems, methods, and instrumentalities are provided to implement transmission scheduling. A multiband device may send a request via a first frequency band. The request may include a multiband Request to Send (MRTS) transmission. The request may be associated with a second frequency band and / or a heamforming training schedule. The first frequency band may be associated with a quasi-omni transmission and the second frequency band may be associated wiih a directional transmission. The first frequency band may be a 5 GHz band and the second frequency band may be a 60 GHz band. The multiband device may receive a multiband Clear to Send (MCTS) transmission via the first frequency band confirming the request. The multiband device may be configured to send a beamforming signal in accordance with the request, for example, via the second frequency band. The beamforming signal may be sent in accordance with a beamforming training schedule.

The invention discloses a method for transmission scheduling, which is used for reducing inter-UE (User Equipment) cross interference. The method provided by the invention comprises the following steps that: a base station acquires uplink and downlink configuration information of a neighboring cell; according to the uplink and downlink configuration information of a local cell and the neighboringcell, the base station judges whether the UE of the local cell and the UE of the neighboring cell simultaneously proceed to transmit in different directions; when the UE of the local cell and the UE of the neighboring cell simultaneously proceed to transmit in different directions, the base station judges whether the UE of the local cell is positioned near the edge of the neighboring cell; and when the UE of the local cell is interfered, uplink and downlink transmission of the UE of the local cell is at least scheduled by the base station to perform transmission together with the UE of the neighboring cell in the same direction. The invention also discloses a device for implementing the method.

A method and system for dynamic rate switching via medium access channel layer signaling is disclosed, wherein data rates for high data rate channels are automatically shifted up or down based on a predetermined metric. In a preferred embodiment, data rates are automatically shifted up or down based on transmit channel gain required to maintain a required signal to noise ratio.

The invention relates to a device and a method of uplink control signaling for transmitting scheduling request indicating information. The method for multiplexing SRI information and CQI information by the user device: when there is no need to emit SRI information, the user device uses whole uplink power to transmit CQI information, thus improving transmission performance of CQI information. The method for processing generalized ACK / NACK channel can increase the chance of transmitting SRI information by the user device, thus lowering the transmission delay of uplink scheduling request, and lowering cost for allocating SRI channel signaling. The CAZAC sequence method for arranging uplink channel can equalize interface from adjacent zones, therefore improving the transmission performance of uplink control signaling.

A method of transmitting a scheduling request which is used to request a radio resource for uplink transmission includes configuring an uplink control channel for transmission of a scheduling request in a subframe, the subframe comprising two consecutive slots, a slot comprising a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols, the scheduling request being carried by presence or absence of transmission of the uplink control channel, and transmitting the scheduling request on the uplink control channel.

The invention relates to packet transmission scheduling and specifically to UMTS packet transmission scheduling.It is an object of the invention to provide an improved method for packet transmission scheduling, especially on downlink shared channels and an improved packet transmission scheduling system, both the improved method and the system especially adapted to be used for UMTS systems.The invention proposes a quality of service scheduling of multiple data flows in a CDMA system, whereina priority order of protocol data units (PDU) of multiple data flows with regard to predefined flow's quality of service requirements is determined and a serving of the protocol data units (PDU) is performed by dynamically creating transport block sets (TBS) to be transmitted to the physical layer (PHY-layer) with regard to the defined priority order and in dependence of allocated radio resource constraints.

A method for transmitting Physical Uplink Shared Channel (PUSCH) performed by a User Equipment (UE) in a wireless communication system may include receive downlink control information (DCI) for uplink (UL) transmission scheduling; and performing codebook based PUSCH transmission based on precoding information included in the DCI.

A method of transmitting scheduling information in time-division-duplex (TDD) system is provided. The method comprises configuring a radio frame, the radio frame comprising at least one downlink subframe and at least one uplink subframe, wherein a downlink subframe is reserved for downlink transmission and an uplink subframe is reserved for uplink transmission, and transmitting scheduling information on a downlink control channel in a downlink subframe, the scheduling information comprising an uplink indicator and uplink resource assignment, the uplink indicator indicating which at least one uplink subframe the uplink resource assignment is valid for. Data can be efficiently transmitted by using an uplink indicator which indicates a specific location of a subframe.

A method and apparatus for resource scheduling on a switched underlay network enables coordination, scheduling, and scheduling optimization to take place taking into account the availability of the data and the network resources comprising the switched underlay network. Requested transfers may be fulfilled by assessing the requested transfer parameters, the availability of the network resources required to fulfill the request, the availability of the data to be transferred, the availability of sufficient storage resources to receive the data, and other potentially conflicting requested transfers. In one embodiment, the requests are under-constrained to enable transfer scheduling optimization to occur. The under-constrained nature of the requests enables requests to be scheduled taking into account factors such as transfer priority, transfer duration, the amount of time it has been since the transfer request was submitted, and many other factors.

Systems and methodologies are described that facilitate encoding layer 3 control information in a multicarrier wireless communication environment. The layer 3 control information can be jointly encoded for a plurality of component carriers. Further, the jointly encoded layer 3 control information for the plurality of component carriers can be included in a data transmission (e.g., PDSCH, PUSCH, . . . ) sent on a component carrier from the plurality of component carriers. Moreover, an allocation for the data transmission on the component carrier can be indicated by a control transmission (e.g., PDCCH, . . . ). For example, the control transmission and the data transmission, which can be scheduled by the control transmission, can be sent on a common component carrier or different component carriers from the plurality of component carriers (e.g., same carrier signalling or cross-carrier signalling can be implemented, . . . ).

A communication station forms a multi-channel self-organized distribution type wireless network effectively without providing an unnecessary transmission pause period. The communication station refers to neighbor apparatus information described in a beacon received from a neighbor station to judge whether or not a beacon transmission channel of a corresponding next neighbor station matches a transmission scheduled channel of its own. In a case where these channels match, a transmission pause period for the next neighbor station is provided and the transmission is postponed. Accordingly, blocking against the beacon reception from the next neighbor station by the neighbor station can be avoided and provision of an unnecessary transmission pause period is not required so that the throughput is improved.

A method and an apparatus for scheduling transmissions of a plurality of cells in a wireless communications system including one or more base stations is provided. The method comprises providing a set of virtual channels to enable an intra-cell transmission orthogonal to another transmission within each cell of the plurality of cells and inter-cell transmissions orthogonal to other transmissions across a cluster of cells associated with the one or more base stations. The method further comprises exchanging signaling messages between two or more base stations to coordinate scheduling of the intra-cell transmission with the inter-cell transmissions for the cluster of cells. For optimizing a parameter associated with scheduling of a plurality of users from a cluster of cells in a wireless communication system, an optimal power level for the parameter of each active user may be searched to maximize an indication of system capacity of the wireless communication system. This enables a coordinated jointly scheduling of the users active in the cluster of cells based on the optimal power levels such that the total interference within the cluster may be minimized to maximize the system throughput / capacity.

The invention discloses a device-to-device scheduling information transmission method and a device thereof. The method comprises that a device emitting terminal and a device reception terminal receive configuration indication information from a network side and determine an uplink physical channel corresponding to the indication information according to the configuration indication information; and the device emitting terminal and the device reception terminal transmits scheduling information through the uplink physic information channel. The invention provides a mature device-to-device (D2D) scheduling information transmission scheme.

The embodiment of the invention discloses a method and a device for random accessing. The method for the random accessing is characterized in that first downlink assignment information is obtained through a mapping relationship way of the first downlink assignment information and lead codes, wherein the first downlink assignment information is the downlink assignment information which is used for random-accessing response information, and a PDCCH (physical downlink control channel) does not need to repeat the transmission scheduling signaling of the random-accessing response information, so as to solve the problem of the existing random accessing method that the waste of channel resources and delayed accessing are caused as the PDCCH is adopted and repetitively transmits the assignment signaling of the random-accessing response information .