Abstract:
예컨대, 애드 혹 피어 투 피어 네트워크와 같은 모바일 무선 시스템에서 피어/네트워크/서비스 발견과 관련된 방법들 및 장치들이 설명된다. 예컨대, 상위 계층 발견 정보와 같은 발견 정보의 전송은 시간에 따라 개별적으로 전송될 다수의 부분들로 나누어진다. 각각의 부분들의 전송은 피어 발견 전송들의 주파수에 있어서 유연성(flexibility)뿐만 아니라 이러한 전송들의 모니터링을 가능하게 하도록 구조화된다. 다양한 실시예들은 예컨대, 신뢰성있는 피어들에 의한 선택적 발견과 같은 고속(rapid) 발견 및/또는 보안 발견을 용이하게 한다. 상기 구조화는 예컨대 지원 노드와 같은, 제 3 자에 의한 몇몇의 전송들의 프록싱(proxy)을 가능하게 한다. 상기 지원 노드는 제 1 레이트에서 통신되는 발견 정보 부분들을 수신하고 제 1 레이트보다 높은 제 2 레이트에서 수신된 발견 정보 부분들을 재전송한다.
Abstract:
A method a computer program product and an apparatus are provided. The apparatus determines paging resources of a plurality of paging resources allocated for listening to paging messages. In addition the apparatus transmits information indicating the allocated paging resources in a peer discovery signal. The apparatus may determine the paging resources on which to listen based on information received in peer discovery signals received from other wireless devices. The received information indicates the paging resources allocated to the other wireless devices.
Abstract:
Methods and apparatus implementing communications using different types of symbols, e.g. different characteristic OFDM symbols, at different times for different purposes are described. A first type of symbol is used for control signaling including conveying transmission request signals and/or transmission request response signals. A second type of symbol is used for conveying user data, e.g., traffic signals. The symbol period for a first type symbol is larger than the symbol period for a second type symbol. The tone spacing for a first type symbol is larger than the tone spacing for a second type symbol. The methods and apparatus are well suited for peer to peer communications systems in which a peer to peer communications device operates in a half-duplex mode of operation.
Abstract:
Un procedimiento (200) de funcionamiento de un primer terminal inalámbrico en un sistema de comunicaciones entre pares, comprendiendo el procedimiento: recibir (206) información de calidad de servicio correspondiente a un enlace de comunicaciones desde un segundo terminal inalámbrico al primer terminal inalámbrico; recibir (208) una solicitud de transmisión desde el segundo terminal inalámbrico; y está caracterizado por: determinar (216) un nivel de potencia de transmisión de respuesta a solicitud basándose en información de calidad de servicio recibida; y transmitir (218), en el nivel de potencia determinado, una respuesta a solicitud en respuesta a la solicitud de transmisión recibida.
Abstract:
Methods and apparatus for supporting peer to peer and infrastructure e.g. cellular communication in a multimode device which can operate in a cellular system are described. Methods and apparatus for supporting peer to peer devices are also described. Peer to peer communication occurs within a switching time period during which infrastructure signaling does not occur and devices switch between an uplink and a downlink mode of infrastructure operation. The time period set for the switching time period is intentionally set larger e.g. 10 50 100 or even more times larger than that required based on maximum cell size. Thus a peer to peer communications period can be introduced into a TDD system and use the same frequency band as the TDD system in a manner that can remain compliant with a cellular communications protocol which allows for a switching time period e.g. set in the system by a parameter.
Abstract:
A communications device synchronizes itself with respect to an external reference signal e.g. a GPS signal. The communications device detects timing reference signals e.g. beacon signals from a communications network. If the communications device determines that the network is not synchronized to the external timing reference signal the communications device operates as a master timing control device. In various embodiments when operating as a master timing control device the wireless communications device communicates time stamps e.g. in beacon signals which indicate a greater passage of time than the actual passage of time. When operating as a master timing control device the communications device transmits network timing reference signals at a higher rate than is being used by the network to seize control of network timing and become the master timing control device. The communications device drives the network timing to synchronize network timing to the external timing reference.
Abstract:
Various methods and apparatus are directed to collision detection and/or avoidance regarding peer to peer connection identifiers. A wireless communications device broadcasts a signal indicating its acquired connection identifier in one of two alternative blocks. A base station monitors peer to peer signaling in its coverage area and tracks the usage of peer to peer connection identifiers by pairs of devices. The base station detects when multiple pairs of devices are using the same peer to peer connection identifier. The base station provides assistance to the peer to peer network to avoid a collision or facilitate rapid collision detection by the peer to peer devices. In one approach the base station sends an instruction for a connection to switch its connection identifier. In another approach the base station sends a connection a message to bias its selection as to which of the two alternative blocks to use for transmission.
Abstract:
Un procedimiento (500) para comunicación inalámbrica de igual a igual, que comprende: seleccionar diferentes ranuras (512) a utilizar para la transmisión en una pluralidad de tramas, en donde cadatrama comprende múltiples ranuras, cada ranura cubre un período de tiempo determinado y las ranurasseleccionadas se encuentran en diferentes ubicaciones de tiempo en la pluralidad de tramas; enviar (514) una señal de descubrimiento de iguales en las ranuras seleccionadas en la pluralidad de tramasdesde un terminal para su uso por otros terminales para detectar el terminal; detectar (516) señales de descubrimiento de iguales de otros terminales en ranuras no utilizadas para latransmisión por el terminal.
Abstract:
Various embodiments relate to wireless communications, and more particularly, to methods and apparatus for authorizing use of spectrum, e.g., through the issuance of spectrum access keys, and/or preventing or discouraging the unauthorized use of licensed spectrum. Peer to peer wireless communications between authorized users of licensed spectrum may involve scrambling/descrambling of information communicated between authorized devices. In some embodiments air interface timing and/or other information received from a second device, e.g., a beacon or GPS transmitter, is incorporated into a computation of a pseudo-random bit sequence which is also computed based on a spectrum access key communicated to authorized spectrum users. In some embodiments authorized peer to peer devices scramble communicated information based on the generated pseudo random bit sequence thereby preventing or discouraging communication with devices which are not authorized to use the spectrum and lack a spectrum access key used to generate the pseudo random bit sequence.