Abstract:
Provided are methods and apparatuses for device-to-device (D2D) communication. The method includes: configuring dedicated subframe(s) according to cellular uplink hybrid automatic repeat request (HARQ) process(es), the dedicated subframe(s) being used for D2D communication (S302); generating indication signaling according to the configuration of the dedicated subframe(s), wherein the indication signaling is used for indicating the dedicated subframe(s) (S304); and transmitting the indication signaling to user equipment (S306). The technical solutions can ensure the reliability of data transmission and the compatibility of cellular transmission and D2D communication that are performed simultaneously, and improve the user experience.
Abstract:
The present disclosure provides a method and system for implementing a local IP service through a relay node, through which a PDN connection between a local UE and a local gateway is established, and local IP service data are transmitted through the relay node between the UE and the local gateway. In the present disclosure, a local gateway is embedded into a relay node, or the local gateway is collocated with the relay node, or the local gateway is connected to the relay node via a wired connection, and a PDN connection between a local UE and the local gateway is established through the relay node. The present disclosure can support not only a local service or a proximity-based service between a relay node and a UE but also a local service or a proximity-based service between two or more UEs through a relay node, thus supporting extensive applications based on local IP data streams and reducing the load of a core network. In addition, spectral efficiency and throughput can also be improved by using a short distance wireless channel.
Abstract:
A method, apparatus and system for processing channel state information are provided. The second channel state information of a second link is sent to a network node via a first link, wherein the first is a cellular communication link from a first device to the network node, and the second link is a D2D communication link between the first device and a second device capable of communicating with the first device. The transmission of channel state information is implemented during D2D communication in a cellular communication system, a criterion for scheduling D2D communication is consequentially provided, and the resource utilization rate of D2D communication is guaranteed. Moreover, the compatibility of D2D communication with cellular communication is achieved without obviously increasing the complexity of implementation and design of UE.
Abstract:
Method, apparatus and system for D2D communication are provided. The method includes: a first user equipment receives configuration message(s) from a network, wherein the configuration information about D2D discovery signal(s) is carried in the configuration message(s); the first user equipment detects D2D discovery signal(s) from a second user equipment according to the configuration information carried in the configuration message(s); the first user equipment transmits a request message to the network according to the result of the detection to acquire the identity of the second user equipment transmitting the detected D2D discovery signal; and the first user equipment receives a response message returned from the network, wherein the identity of the second user equipment or rejection information indicating the rejection to the discovery of the second user equipment by the first user equipment is carried in the response message. The present disclosure addresses the problem of the peer discovery of D2D incorporated in a cellular communication system.
Abstract:
Methods, devices and a system for transmitting SRS and a UE are provided. A network node transmits an SRS configuration information set to a UE, wherein the SRS configuration information set includes first configuration information indicating the configuration of a first SRS and second configuration information indicating the configuration of a second SRS, wherein the first SRS is transmitted on a cellular uplink and used for performing uplink channel measurement during cellular communication; and the second SRS is transmitted on a D2D link and used for performing channel measurement of the D2D link during D2D communication. The solution addresses the problem of the configuration and the transmission of a reference signal existing in the conventional art when D2D communication is introduced into a cellular system, realizes the compatibility of D2D communication with cellular communication and avoids the noticeable increase in UE design and realization complexity.
Abstract:
Provided are methods and apparatuses for device-to-device (D2D) communication. The method includes: configuring dedicated subframe(s) according to cellular uplink hybrid automatic repeat request (HARQ) process(es), the dedicated subframe(s) being used for D2D communication (S302); generating indication signaling according to the configuration of the dedicated subframe(s), wherein the indication signaling is used for indicating the dedicated subframe(s) (S304); and transmitting the indication signaling to user equipment (S306). The technical solutions can ensure the reliability of data transmission and the compatibility of cellular transmission and D2D communication that are performed simultaneously, and improve the user experience.
Abstract:
The present disclosure provides a method and system for implementing a local IP service through a relay node, through which a PDN connection between a local UE and a local gateway is established, and local IP service data are transmitted through the relay node between the UE and the local gateway. In the present disclosure, a local gateway is embedded into a relay node, or the local gateway is collocated with the relay node, or the local gateway is connected to the relay node via a wired connection, and a PDN connection between a local UE and the local gateway is established through the relay node. The present disclosure can support not only a local service or a proximity-based service between a relay node and a UE but also a local service or a proximity-based service between two or more UEs through a relay node, thus supporting extensive applications based on local IP data streams and reducing the load of a core network. In addition, spectral efficiency and throughput can also be improved by using a short distance wireless channel.
Abstract:
The embodiments of the present invention disclose a wireless communication method and apparatus. The method includes: a first communication device receiving first grant from a network node, the first grant at least comprising first resource allocation information for allocating resources; the first communication device receiving second grant from a second communication device, the second grant at least comprising a modulation and coding scheme of service data; the first grant and the second grant being used for scheduling service data transmission between the first communication device and the second communication device; and the first communication device receiving, according to the scheduling, service data transmitted by the second communication device; and/or the first communication device transmitting, according to the scheduling, service data to the second communication device.
Abstract:
A device discovery method, a user equipment and a network side device are disclosed, which relates to the field of wireless communication. The method disclosed in the embodiments of the present document includes: the user equipment acquiring device discovery configuration information, the device discovery configuration information at least including information used for indicating a time domain location of a device discovery radio resource; the user equipment determining a radio resource location for sending a D2D discovery signal according to the device discovery configuration information; and the user equipment sending the D2D discovery signal at the determined radio resource location; wherein, the device discovery radio resource indicated by the device discovery configuration information is a D2D dedicated resource, and has a specific configuration period in a time domain. The embodiments of the present document also disclose a user equipment and a network side device.
Abstract:
The present document relates to a wireless communication method, a user equipment, a network device, and a system. The method includes: a first user equipment sending a dedicated discovery signal; the first user equipment receiving a response message, wherein the response message is sent by a second user equipment which has detected the dedicated discovery signal; the first user equipment establishing a device-to-device connection with the second user equipment; and the first user equipment communicating with a network side through the device-to-device connection and a communication link between the second user equipment and the network side.