Abstract:
The present disclosure relates to a method to be performed at a user equipment and to a user equipment operable in a wireless communications system supporting direct communication between userequipments. Accordingly, a sidelink configuration is stored in the user equipment, 5 specifying aplurality of destination groups, each destination group including possible destinations for sidelink data as well a logical channel priority is stored for each logical channel out of logical channels configured for the sidelink destination groups. The terminal then selects a sidelink destination group with a sidelink logical channel having sidelink data available for transmission with the 10 highest logical channel priority among the sidelink logical channels having data available for transmission, and allocates radio resources to the sidelink logical channels belonging to the selected sidelink destination group in decreasing priority order.
Abstract:
AUE (100, 102) includes an EUTRA-CMR reception unit (608) that receives a codec mode request (EUTRA-CMR) including a codec mode that is determined by an eNB (104, 106) in accordance with a radio condition of the UE (100, 102), a mode switching notification unit (609) that notifies an encoder of switching to the codec mode included in the received codec mode request; and a mode switching acknowledgement unit (610) that transmits a response message to the eNB (104, 106) when confirming that the encoder switches the codec mode.
Abstract:
Un sistema de comunicación que comprende: un nodo (110) de red; un primer terminal (100) que soporta un primer códec y un segundo códec; y un terminal (102) que soporta el primer códec y otro códec, en el que: el primer códec es un códec diferente de un códec heredado, el primer códec soporta un modo compatible y un modo no compatible, el modo compatible que es compatible con el segundo códec y puede utilizarse como el segundo códec y el modo no compatible que no es compatible con el segundo códec y no puede utilizarse como el segundo códec, el segundo códec que es el códec heredado, el primer terminal y el terminal están adaptados para negociar el modo no compatible en una negociación de sesión para comunicar datos entre el primer terminal y el terminal cuando dicha comunicación comienza en una red de conmutación de paquetes, PS, el nodo (110) de red que está adaptado para detectar si el modo no compatible negociado del primer terminal es conmutado al modo compatible o al segundo códec en la comunicación de datos entre el primer terminal y el terminal y, después de dicha detección, para transmitir una señal para que el terminal conmute el modo no compatible negociado del terminal al modo compatible mediante el uso de un formato de carga útil del primer códec; y el terminal está adaptado para conmutar el modo no compatible negociado del terminal al modo compatible sin cambiar el primer códec, en base a la señal.
Abstract:
The present disclosure relates to systems and methods for transmitting data over a wireless channel from a data transmitting node to a data receiving node in a communication system. In particular, the data transmitting node comprises second-layer processing circuitry for receiving, from a third layer, at least one second-layer service data unit, SDU, to be mapped onto a resource allocated for data transmission, and for generating a second-layer protocol data unit, PDU, including said at least one second-layer SDU and at least one second-layer control element, the at least one second-layer control element placed after any of the at least one second-layer SDU, and first-layer processing circuitry for receiving the second-layer PDU generated by the second-layer processing circuitry and mapping the second-layer PDU onto the resource allocated for data transmission. The data receiving node comprises first-layer processing circuitry for de-mapping at least one second-layer protocol data unit, PDU, from a resource allocated for data reception, and a second layer processing circuitry for receiving and parsing the second-layer PDU de-mapped by the first-layer processing circuitry, the second-layer PDU including at least one second-layer service data unit, SDU, and at least one second-layer control element, the at least one second-layer control element following any of the at least one second-layer SDU.
Abstract:
A network node whereby there is no loss of communication quality and the call interruption time can be shortened to continue communication even when the codec used by one terminal during communication changes. In MSC/MGW (110) for forwarding data between two terminals when one of the two terminals performing communication in a first network transfers to a second network different from the first network, codec detector (804) detects both a first codec used by one terminal in the first network and a second codec used by one terminal in the second network. When the first codec is a codec having a mode compatible with the second codec, RTP payload generator (808) switches the codec of data transmitted from one terminal to the compatible mode of the first codec, thereby generating data for the other terminal, and transmitter (802) transmits the data for the other terminal to the other terminal.
Abstract:
Provided is a terminal capable of determining the status of a communications and selecting an appropriate codec mode without applying a load to either a network or terminals, by using information held by the terminal as negotiation information. A UE (100) sends to a partner the codec mode selected from a plurality of candidate codec modes notified by the partner, when communications commence. The UE (100) comprises: a wireless receiver (600) that receives a first information relating to the characteristics of a network to which the partner is currently connected; an information comparison unit (606) that compares the first information and a second information relating to the characteristics of the network that the UE is currently connected to, and decides the communications format; and a mode determination unit (608) that selects the codec mode to be used, from among the candidates and based on the decided communications format.
Abstract:
A network node according to the present disclosure has an ATCF function for use in eSRVCC. The network node includes an SDP analyzing unit (704) that acquires information regarding a codec contained in a received SDP offer/SDP answer, a data storage unit (706) that holds at least one of information regarding a codec supported by ATGW or a neighboring MGW, information regarding transcoding supported by the ATGW or the neighboring MGW, and information regarding a codec supported by a neighboring CS network, and a determination unit (710) that determines whether transmission of the SDP offer for codec re-negotiation from the ATCF to a communication terminal is allowed using the information regarding a codec acquired in the SDP analyzing unit and the information retrieved from the data storage unit.
Abstract:
The objective of the present invention is to suppress deterioration of call quality caused by transcoding without interrupting a call even if a codec used by one of the terminals during communication is changed. A modification determination unit (608), in the case of detecting a modification of a codec used by one terminal of two terminals, determines whether or not to constrain the bandwidth of the first codec using a first codec of the other terminal, and a second codec after modification by the first-mentioned one of the terminals. A signaling generation unit (610) transmits, to the other terminal, signaling for limiting the bandwidth if the bandwidth is to be limited.