Abstract:
In an example aspect, a method for submitting a PDCP PDU for transmission is provided. The method comprises submitting the PDCP PDU to a first entity for transmission over a first physical layer, and submitting the PDCP PDU to a second entity for transmission over a second physical layer. The method also comprises, after a predetermined time following submission of the PDCP PDU to the first entity and/or the second entity, instructing the first entity and the second entity to discard the PDCP PDU without transmission, or instructing the one of the first entity and the second entity to discard the PDCP PDU in response to an indication of transmission or delivery of the PDCP PDU by the other of the first entity and the second entity.
Abstract:
Various communication systems may benefit from an improved signaling protocol. For example, single-cell point-to-multipoint transmissions may benefit from improved packet retransmissions. A method includes receiving a transmission comprising one or more machine type communication packets from a network entity at a user equipment via a multicast signal. The method also includes sending feedback to the network entity during a feedback window that at least one of the one or more machine type communication packets was not properly received. In addition, the method includes receiving from the network entity a retransmission comprising at least one of the one or more machine type communication packets based on the feedback.
Abstract:
A method for communication by a scanner is described. The method includes receiving a broadcast message from a broadcasting device in a connectionless mode. The method also includes performing back channel communication with the broadcasting device on a contention basis while maintaining the connectionless mode. The scanner may send a packet to the broadcasting device while maintaining a connectionless relationship with the broadcasting device.
Abstract:
Procédé d'amélioration de la fiabilité de transmission et de la qualité de réception de flux de données vidéos sur un réseau sans fil régi par des protocoles de communication de type WIFI. Les données vidéos sont codées sous forme de paquets comportant chacun K premiers blocs de données et N blocs de redondance pour la correction au moyen d'un algorithme de correction d'erreur directe (FEC). Le flux vidéo comprend une succession desdits paquets de données émis en multicast par an moins un émetteur en direction de dispositifs de visualisation clients (5) de visualisation de type smartphones ou tablettes. Des messages d'acquittement négatif envoyés par les dispositifs clients sont utilisés par le serveur pour construire un tableau statistique à partir duquel certaines au moins des données mandantes sont renvoyées aux dispositifs clients.
Abstract:
A new air interface that is interference cancellation friendly is proposed. In one novel aspect, a novel code rate assignment with rate splitting is proposed. In one embodiment, a base station decomposes a codeword {x 1 } into two codewords {x 1a } and {x 1b }. The two codewords are applied with different code rates and/or modulation orders. More specifically, the code rate or modulation order of codeword {x 1a } is set appropriately so that a victim UE can decode and cancel {x 1a } under the channel quality of the victim UE. Typically, the channel quality of a victim UE is poorer than the channel quality of the intended UE. As a result, the MCS for {x 1a } can be lower than the MCS for {x 1b } such that the victim UE is able to apply CWIC to decode and cancel {x 1a }.
Abstract:
An embodiment method includes initiating, by one or more servers of a push-to-talk (PTT) platform, a PTT call session in response to a PTT call session initiation request from a first client device, receiving, by the one or more servers, a first estimated modulation and coding scheme (MCS) from the first client device, and receiving, by the one or more servers, a first transmission in accordance with an initial media encoding scheme (MES) from the first client device during an initial volley. The method further includes transmitting, by the one or more servers, instructions to the first client device to use a first MES different than the initial MES for a second transmission during a subsequent volley.
Abstract:
방송 신호 수신기가 개시된다. 본 발명에 따른 방송 신호 수신기는, 수신된 방송 신호에 대해 신호 검출 및 OFDM 복조를 수행하는 동기화/복조 모듈; 상기 방송 신호의 신호 프레임을 파싱하고 디인터리빙을 수행하는 프레임 파싱 및 디인터리빙 모듈; 상기 방송 신호의 적어도 하나의 PLP(Physical Layer Pipe)의 데이터를 비트 도메인으로 변환하고 FEC 디코딩을 수행하는 디매핑 및 디코딩 모듈; 및 상기 적어도 하나의 PLP의 데이터를 수신하여 데이터 스트림을 출력하는 아웃풋 프로세싱 모듈을 포함한다.
Abstract:
본 발명의 일 실시예에 따른 방송 신호 송신 장치는 서비스 데이터를 인코딩하는 인코더, 인코딩된 서비스 데이터를 포함하는 적어도 하나 이상의 신호 프레임을 생성하는 프레이밍 블록, 적어도 하나 이상의 신호 프레임 내의 데이터를 기본 인터리빙 시퀀스 및 심볼 오프셋 값을 기반으로 생성된 인터리빙 시퀀스를 사용하여 프리퀀시 인터리빙하는 프리퀀시 인터리버, 프리퀀시 인터리빙된 데이터를 OFDM (Orthogonal Frequency Division Multiplex) 방식으로 모듈레이팅하는 모듈레이터 및 모듈레이팅된 데이터를 포함하는 방송 신호들을 전송하는 전송부를 포함할 수 있다.