383 results about "Downlink scheduling" patented technology

The invention discloses a LTE PDCCH (Long Term Evolution System Physical Downlink Control Channel) blind inspection control method and device. According to the device, the PDCCH blind inspection times can be reduced by limiting polymerization grade ranges to be inspected in a certain range through a polymerization grade range calculation unit, a candidate PDCCH number calculation unit, an uplink/downlink scheduling state maintenance unit, a searching space state maintenance unit and a candidate PDCCH position calculation unit; and the repeated inspection of the same CCE (Control Channel Element) initial position in the same polymerization grade can be prevented by limiting the number of candidate PDCCH corresponding to each polymerization grade in a certain range; the inspected state of each CCE in a searching space is maintained to avoid the repeated inspection of CCE positions of detected DCI (Downlink Control Information) in different polymerization grades; and uplink/downlink scheduling states are maintained to reduce the inspection of uplink/downlink scheduling PDCCH number. By using all the units, the computation quantity and the searching time can be decreased; and the error inspection probability and the system power consumption can be reduced.

The invention discloses a feedback processing method and system for HARQ(Hybrid Automatic Repeat Request)-ACK (Acknowledge Character). The method comprises the following steps that when the UE (user equipment) is provided with a plurality of service districts, the uplink subframe and the downlink subframe is configured as 1 or 6 and the size of the tying window is 1, the substation sends 0 and/or 4 in the form of DCI to the UE, wherein the two bit downlink allocation index (DAI) information of 0 and/or 4 in the form of DCI is used for indicating the downlink scheduling situation of the current subframe; and the UE determines the HARQ-ACK bit sequence and/or determines the RE number occupied by the HARQ-ACK bit sequence according to the DAI information. The method and the system achieve the effect that the size and the occupied resource unit of the HARQ-ACK bit sequence meets the practical requirement.

The present invention relates to a method for transmitting uplink control information in a mobile communication system; and, more particularly, to a method for effectively forming uplink control information transmitted through a downlink from a base station to a terminal in a mobile communication system for providing a packet service and transmitting the uplink control information with minimum radio resources occupied. The method includes the steps of generating uplink control information; allocating the uplink control information to a downlink-shared radio resource for packet data transmission based on downlink scheduling information; and transmitting the radio resource to a terminal. The present invention is applied to a mobile communication system.

The invention provides uplink/downlink scheduling information transmitting and receiving methods and a device. The downlink scheduling information transmitting method includes determining a first downlink subframe in a downlink subframe on a second carrier, and defining a subframe at the moment, corresponding to that of the first downlink subframe, on a first carrier as an uplink subframe; transmitting downlink scheduling information corresponding to the first downlink subframe on the second carrier to a terminal on a fifth downlink subframe on the first carrier; and leading the moment corresponding to the fifth downlink subframe to be prior to the moment corresponding to the first downlink subframe. The uplink scheduling information transmitting method includes determining a first uplink subframe in an uplink subframe on the second carrier; transmitting uplink scheduling information corresponding to the first uplink subframe on the second carrier to the terminal on a sixth downlink subframe of the first carrier; and leading the moment corresponding to the sixth downlink subframe to be prior to that of the first uplink subframe. The purpose of uplink and downlink scheduling is realized by the aid of the first carrier and the second carrier which carry a PDCCH (physical downlink control channel).

The present invention relates to a method, a system and an apparatus for implementing bandwidth allocation and scheduling management based on a relay station. A mapping information unit for controlling a RS (MAP_RS) is set in a frame structure of the physical layer of a BS and an extended frame structure of the physical layer of a BS is constructed in a frame structure of the BS physical layer. The BS constructs a mapping information message MAP_RS for controlling the relay station RS base on the extended frame structure of the BS physical layer, and performs bandwidth allocation and scheduling management of a communication channel of the RS by the RS according to the MAP_RS message. Through the present invention, a bandwidth allocation is implemented mainly at the BS, and a service scheduling is implemented mainly at the BS. The RS only performs an uplink or downlink scheduling of the RS passively. The complexity of the RS reduced effectively. The Multi-hop relay problem is solved using a bandwidth request relay and a bandwidth allocation relay, without introducing any complex technologies and procedures of the bandwidth request, the bandwidth allocation and the scheduling management. The complexity of the BWA relay network is simplified.

The invention relates to the field of communications and provides a method of and apparatus for transmitting downlink control information, and the method includes: for transmission of DCI over any carrier, determining DAI information fields in uplink scheduling DCI and downlink scheduling DCI to be carried over the carrier and an HARQ process number information field in the downlink scheduling DCI dependent upon PDSCH HARQ feedback scheme currently in use; and determining a UL index information field in the uplink scheduling DCI to be carried over the carrier dependent upon a PUSCH scheduling scheme currently in use, so that an appropriate DCI design scheme is provided for an application scenario of across-system carrier aggregation to thereby satisfy a demand for the use of an evolved process in an LTE system and improve effectively the performance of the system.

The invention discloses a method for sending signalings on a downlink control channel. The method comprises the following steps: when downlink dispatching is carried out in a multithread beam-shaping BF (Band Filter) transmission mode, a substation on the physical downlink control channel (PDCCH) organizes and sends signalings in a special downlink control information (DCI) format of the preset BF transmission mode. The invention can be used to save system sources in the multithread BF transmission mode.

The invention provides an uplink control information transmission method and device. The uplink control information transmission method comprises: a terminal receives DCI transmitted by a base station, wherein the DCI comprises at least one of the following: a first control domain for indicating relevance of downlink scheduling, a second control domain for indicating a terminal to determine an HARQ-ACK feedback mode, and a third control domain for indicating a PUCCH resource used by the terminal when the terminal determines to feedback the HARQ-ACK; the terminal determines related parameter information which is needed when the terminal feeds back the HARQ-ACK information according to the downlink control information, wherein related parameter information comprises: an HARQ-ACK bit number, a PUCCH format of the HARQ-ACK, and a PUCC resource corresponding to the PUCCH format; and the terminal transmits HARQ-ACK information to the base station. The uplink control information transmission method and device solve a problem about how to determine a PUCCH format of the transmitted HARQ-ACK when the PUCCH format is introduced.

A base station design for a wireless communication system is disclosed with a hierarchical scheduler for packet data services which is advantageously both traffic-aware and channel-dependent in a manner which enhances the users' perception of network performance. In one embodiment, a cross-layer hierarchical scheduler is disclosed which further comprises an intra-user scheduler and an inter-user scheduler.

The embodiment of the invention discloses a channel state information (CSI) transmission method and equipment, relating to the technical field of wireless communication; and the method and the equipment are used for synchronously feeding back CSI of a plurality of downlink carriers to improve the downlink scheduling accuracy. In the invention, a terminal determines a CSI feedback bit number threshold in a present uplink subframe and a total CSI feedback bit number of a plurality of downlink carriers needing feedback of CSI in the present uplink subframe, and then judges whether the total CSI feedback bit number is greater than the CSI feedback bit number threshold or not; if so, the CSI fed back in the present uplink subframe needs to be compressed; and the compressed CSI is fed back to a base station in the present uplink subframe; otherwise, the CSI of the plurality of downlink carriers is fed back to the base station in the present uplink subframe. According to the invention, the downlink scheduling accuracy can be improved in the invention.

The embodiment of the invention discloses a channel state information transmission method and device and relates to the technical field of radio communication, and the method and device provided by the invention are used for solving the problem of how to simultaneously transmit CSI (Channel State Information) of a plurality of downlink carriers. The method comprises: determining the downlink carriers needing CSI compression in the plurality of downlink carriers needing to feed back the CSI in a current uplink sub-frame by a terminal; compressing the CSI of the downlink carriers which need the CSI compression; and feeding back the compressed CSI corresponding to the downlink carriers needing the CSI compression, and the CSI corresponding to the downlink carriers, except for the downlink carriers needing the CSI compression, in the plurality of downlink carriers needing to feed back the CSI in the current uplink sub-frame, to a base station in the current uplink sub-frame. The method and the device can be used for realizing the scheme of simultaneously transmitting the CSI of the plurality of downlink carriers in a same uplink sub-frame, so that the base station can simultaneously obtain the CSI of the plurality of downlink carriers to improve the accuracy of downlink scheduling.

A scheduler for scheduling downlink transmissions of orthogonal frequency division multiple access (OFDMA) signals using spatially directed beams to a plurality of subscriber stations in a wireless network. The scheduler schedules the downlink transmissions as a function of frequency, time, and space. The scheduler further schedules downlink transmissions to a first subscriber station based on a first null space associated with at least one subscriber station previously scheduled to receive.

The invention relates to a method for coupling ascending and descending distributions. Wherein, it is characterized in that: based on the distribution information of user at descending or ascending chains, calculating out the priority level parameters for user when in descending or ascending distribution; when there are both services in ascending and descending chains, based on the priority level parameters, coupling the ascending and descending distributions for user. The invention can confirm the service quality and save idle resource.

This invention belongs to a classification of service quality Broad Band wireless access network technology, its characteristics is that the service is divided into five categories and increase of variable-length packet, variable bit rate, real-time services fluctuations gentle flow; The sub-stations and base stations are made a detailed functional breakdown, the business services is established by admission control module to accept or reject IP layers; reading bandwidth allocation module with a wide range of services requested bandwidth connections with the quality of service parameters and distribution system available bandwidth, different sub-stations authorized obtained the total bandwidth; using uplink and downlink scheduling of the total bandwidth in accordance with its mandate and the necessary bandwidth, by service Priority service connecting the various dispatching through lower physical layer interface to send the media access control layer of data and control information. Not only satisfy a wide range of services connecting service quality requirements, but also take into account the unexpected increase in the data, increased fairness between sub-station and inter-connecting different priority-class service.

An uplink/downlink scheduling in a mobile communication system and signal transmitting/receiving scheme using the same. A base station performs scheduling in consideration of an inter-cell interference link formed according to a dynamic scheduling. User equipment transmits and receives signals through the same. Each user equipment manages an interferential base station list to meet the process rate requirements. If a specific user equipment receives a first step scheduling signal including a user equipment specifying information for specifying the specific user equipment and a contention number information, base stations in a base station list managed by the corresponding user equipment are regarded as having real inter-cell interference links. Hence, in order for a base station having a highest priority to enable a resource assignment in a corresponding scheduling stage, a silencing signal for requesting a resource assignment prohibition is transmitted to the rest of the base stations.

The invention discloses a method for realizing a hybrid automatic request repeat feedback mechanism. The method comprises the following steps: a base station transmits a shared control channel (HS-SCCH) of a high-speed downlink shared channel, and a downlink scheduling control channel of high-speed downlink packet access; a terminal decodes the received HS-SCCH, and receives a data packet loaded on a high-speed physical downlink shared channel; and the terminal carries out hybrid automatic request repeat feedback on a shared information channel (HS-SICH) corresponding to the HS-SCCH and an uplink feedback channel of high-speed downlink packet access. The invention also discloses a system and base station side/terminal side equipment for realizing the hybrid automatic request repeat feedback mechanism. By adopting the method, the system and the equipment, information can be fed back on the HS-SICH.

The invention discloses a method and a device for downlink scheduling, wherein the method comprises the following steps: acquiring downlink service data of UE (User Equipment); and judging whether a contended process exists or not when determining that the UE has no idle progress in a current frame, if yes, transmitting the service data to the UE through a downlink channel and if not, denying thetransmission on the service data. By the invention, the priority transmission of high priority services can be effectively ensured, the time delay of the high priority services can be reduced and thetransmission quality of the UE can be improved.

The present disclosure relates to a method and apparatus for transmitting uplink control information for a terminal. That is, the method and apparatus may be provided for transmitting downlink control information through a downlink control channel which is introduced into a data domain and receiving control information. More particularly, a method and apparatus may be provided for mapping an uplink control channel resource for feeding back uplink HARQ ACK/NACK of the terminal for a downlink data channel through downlink scheduling information, which is transmitted via the downlink control channel.

The embodiment of the invention provides a method for transmitting a downward dispatching message, which comprises that: A. a dispatching message carrying resource instruction information allocated to a terminal is transmitted to the terminal by a base station through a downward dispatching channel; resource instructed by the resource instruction information is applied to transmitting upward data through the terminal; B. if the upward data transmitted by the terminal by means of the resource are not received after the dispatching message is transmitted by the base station, the procedure A is returned to be executed before transmitting frequency of the dispatching message surpasses the largest preset frequency; if the transmitting frequency of the dispatching message is within the largest preset frequency, and the upward data transmitted by the terminal are correctly received by the base station, the flow is over. The embodiment of the invention also provides a communication system and a base station; the technical scheme provided by the embodiment of the invention can effectively shorten transmission time lapse of the upward data, promote user experience, and improve success ratio of the random access.