Abstract:
무선 통신 시스템에서 용량을 증가시키는 기법들이 제시된다. 일 양상에서, 무선 통신 시스템에서 전송되는 최소-레이트 프레임들의 계통적 비-전송, 또는 "블랭킹"이 제공된다. 예시적인 실시예에서, cdma2000 음성 통신 시스템에서 1/8 레이트 프레임들은 제로(zero) 트래픽 비트들을 운반하는 널-레이트 프레임들로 계통적으로 대체된다. 그럼에도 불구하고, 공급들은 예컨대 보코더에 의해 "결정적인(critical)"으로 지정되는 특정한 전송에 의해 수행된다. 오직 비-널 레이트 프레임들에 응답하여 외부 루프 전력 제어를 갱신하는 것을 포함하는 상기 수신기는 널 레이트 또는 비-널 레이트 전송들의 존재를 탐지하고 수신된 프레임들을 적절히 프로세싱한다. 수신기가 널 레이트 프레임들을 탐지하는 것을 보조하도록 파일럿 전송 게이팅 패턴에 대한 추가적인 기법들이 제공된다. 다른 양상에서, 무선 통신 링크를 통한 신호 전송의 조기 종료가 제공된다. 예시적인 실시예에서, 될 수 있는 한 프레임의 모든 전력 제어 그룹들(PCG들)이 순방향 링크(FL)를 통해 수신되기 전에, 프레임의 정확한 수신이 역방향 링크(RL)를 통해 이동국(MS)에 의해 인식될 때까지 기지국(BS)은 FL을 통해 프레임에 대한 PCG들을 MS로 전송한다. 가능한 ACK 시그널링 방법들은 cdma2000 무선 통신 시스템과 관련된 채널들에 대하여 정의된다. 다른 예시적인 실시예에서, 역방향 링크 조기 종료에 대한 기법들이 또한 제공된다.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for reverse link transmission beam-forming.SOLUTION: A method and system for reverse link transmission beam-forming are provided. One method comprises using a plurality of antennas at an access terminal to wirelessly transmit signals to one or more base stations; receiving an input indicating a reverse link signal quality at one or more base stations; and adjusting at least one of a gain and a phase of a signal to be transmitted on one or more antennas. The input may be a reverse power control (RPC) value sent from one or more base stations.
Abstract:
PROBLEM TO BE SOLVED: To estimate reverse link loading in a wireless communication system.SOLUTION: The reverse link interference is measured and reverse link receiver noise is measured. The reverse link interference is compared to the reverse link receiver noise by dividing the interference power by the receiver noise power. The reverse link receiver noise is measured in an OFDMA system by nulling transmission from access terminals within a cell and nearby during a null time and frequency interval. To measure the reverse link interference, local null time and frequency intervals are designated, the access terminals within the cell null their transmissions during the designated local null time and frequency intervals, and interference power is measured in the local null time and frequency intervals. Alternatively, the interference power is measured by subtracting pairs of pilot symbols that are contiguous to each other in time or frequency.
Abstract:
PROBLEM TO BE SOLVED: To provide methods and apparatus for an adaptive de-jitter buffer, regarding wireless communications. SOLUTION: Adaptive De-Jitter Buffer for Voice over IP (VoIP) for packet switch communications. The de-jitter buffer methods and apparatus presented avoid playback of underflows, while balancing end-to-end delay. In one example, the de-jitter buffer is recalculated at the beginning of each talkspurt. In another example, talkspurt packets are compressed upon receipt of all remaining packets. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for an adaptive de-jitter buffer.SOLUTION: An adaptive de-Jitter buffer for Voice over IP (VoIP) for packet switch communication is presented. A presented method and apparatus for the de-jitter buffer avoid reproduction of underflows, while balancing end-to-end delay. In one example, the de-jitter buffer is recalculated at a beginning of each voice part. In another example, voice part packets are compressed upon receipt of all remaining packets.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for adaptive server selection in a wireless communication. SOLUTION: An access terminal may be configured to determine a forward link quality metric associated with each of a plurality of sectors serviced by a plurality of access points; assign credits to each sector in relation to the forward link quality metric; and change a data source control (DSC) value if the credits accumulated for a non-serving sector at a DSC change boundary is greater than a predetermined threshold, where the non-serving sector and the serving sector for the access terminal belong to different cells. The access terminal may be further configured to change a data rate control (DRC) cover in accordance with the DSC change. The use of DSC may provide an early indication of handoff, thereby allowing the service outage associated with server switching to be substantially reduced. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for pilot grouping, route protocols, and scheduling in a multi-carrier communication system.SOLUTION: An access terminal may group a plurality of pilot signals characterized by different frequencies into one or more pilot groups where each pilot grouping is identified by a plurality of parameters (for example, a PN offset and a group ID). Each pilot group may include pilot signals having substantially the same coverage area. The access terminal further selects a representative pilot signal from each pilot group for pilot strength reporting. The access terminal also uses the pilot grouping for effective set management.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for pilot strength reporting in a multi-carrier communication system.SOLUTION: An access terminal groups a plurality of pilot signals characterized by different frequencies into one or more pilot groups where each pilot grouping is identified by a plurality of parameters (for example, a PN offset and a group ID). Each pilot group includes pilot signals having substantially the same coverage area. The access terminal further selects a representative pilot signal from each pilot group for pilot strength reporting. The access terminal also uses the pilot grouping for effective set management.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for acquiring knowledge (gain and phase) of a channel for forming reverse link transmission beam.SOLUTION: The method comprises steps of: using a plurality of antennas at an access terminal 106 to wirelessly transmit signals to one or more base stations 104; receiving an input indicating a reverse link signal quality at the one or more base stations 104; and adjusting at least one of a gain and a phase of a signal to be transmitted on one or more antennas. The input may be a reverse power control (RPC) value sent from one or more base stations.