Abstract:
A cellular communication system and method for delivering information, e.g., data and/or control-signaling, to a user equipment (UE) from a neighboring node are disclosed. The cellular communication system includes a first node configured to transmit information in one or more Multicast Broadcast Single Frequency Network (MBSFN) subframes over a radio frequency (RF) (ink between the first node and the UE, while the UE is being served by a second node. The first node can use a network-defined, dedicated portion of the MBSFN subframe for this purpose. Instead of only allowing the second node to send data/signaling messages to the UE, the disclosed techniques allow neighboring nodes to also deliver information to the UE. In particular, the neighboring nodes can transmit data and/or control-signaling to the UE using MBSFN subframes in order to minimize signaling overhead and signaling delay.
Abstract:
A proxy multicast-broadcast single-frequency network (MBSFN) subframe conforming to a 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) communication specification is transmitted within an MBSFN proxy region that at least partially overlaps with a non-LTE service area of a non-LTE access node providing wireless service to user equipment (UE) devices in the non-LTE service area. The non-LTE access node provides wireless service in accordance with a non-LTE communication specification that is different from the LTE communication specification. The MBSFN proxy region is smaller than, and is within an LTE service area of an LTE access node that provides wireless service to UE devices within the LTE service area in accordance with the LTE communication specification. The proxy MBSFN subframe is transmitted with a timing and frequency such that a UE device receiving service from the LTE access node is capable of receiving the MBSFN subframe.
Abstract:
A first wireless communication user equipment (UE) device transmits a device-to device (D2D) Sounding Reference Signal (SRS) to a second wireless communication (UE) device using microcell communication resources. The second wireless communication (UE) device evaluates the SRS to discover the first wireless communication (UE) device, estimate channel conditions, and/or determine Channel State Information. Information indicative of the CSI is reported to a base station. Based on the reported channel conditions, (D2D) communication resources are scheduled by assigning microcell communication resources to the wireless communication (UE) devices.
Abstract:
In a cellular communication system, pre-coding MIMO parameters are assigned for transmission of device-to-device (D2D) signals between D2D mobile devices to minimize interference at unintended recipient devices (receiving proximate devices). The pre-coding MIMO parameters are transmitted from a base station to a transmitting D2D mobile device over a subset of defined downlink cellular communication resources defined by a communication specification for downlink transmission from base stations to mobile wireless devices. The pre-coding MIMO parameters are determined based on channel characteristics of at least an Interference channel where the Interference channel is between a D2D transmitting device and a proximate receiving mobile device (unintended recipient device). The pre-coding MIMO parameters are determined to facilitate interference management at the receiving proximate mobile device when the pre-coded transmission signal is received through the interference channel.
Abstract:
In a communication system that includes at least a first base station (206) having a first geographical service area (12) and second base station (210) having a second geographical service area (16) that overlaps at least partially with the first geographical service area (12), a relaying mobile wireless communication device (202) receiving service from the second base station (210) receives and forwards scheduling information (204) to the second base station (210), where the scheduling information (204) is transmitted by the first base station (206) and identifies communication resources that will be used for wireless communication with the first base station. Based at least on the scheduling information, the second base station (210) schedules communication resources to mobile wireless communication devices (202, 212) receiving service from the second base station (210) such that interference is reduced, minimized, or eliminated.
Abstract:
In a cellular communication system, pre-coding MIMO parameters are assigned for transmission of device-to-device (D2D) signals between D2D mobile devices to minimize interference at unintended recipient devices (receiving proximate devices). The pre-coding MIMO parameters are transmitted from a base station to a transmitting D2D mobile device over a subset of defined downlink cellular communication resources defined by a communication specification for downlink transmission from base stations to mobile wireless devices. The pre-coding MIMO parameters are determined based on channel characteristics of at least an Interference channel where the Interference channel is between a D2D transmitting device and a proximate receiving mobile device (unintended recipient device). The precoding MIMO parameters are determined to facilitate interference management at the receiving proximate mobile device when the pre-coded transmission signal Is received through the interference channel.
Abstract:
A first wireless communication device transmits a reference signal at a series of transmission times to transmit a plurality of reference signals over time. The first wireless communication device receives a communication signal from a second device. In response to determining at the first device that an acknowledgment response should be sent to the second device in response to the communication signal, the first wireless communication device applies a code to the reference signal for at least one of the transmission times of the series of transmission times. The resulting coded reference signal indicates an acknowledgment response to the second wireless communication device.
Abstract:
Macrocell communication resources 121 are used to exchange signals between a base station 102 and at least one wireless communication device 104, 106 to establish a device-to-device (D2D) communication link 122 between a first wireless communication device 104 and a second wireless communication device 106. A call, or other communication session, may be initiated by the first wireless communication device by sending a D2D call initiation message over uplink macrocell communication resources to the core network of a cellular communication system. The first wireless communication device may also transmit D2D link information regarding the wireless D2D communication link between the wireless communication devices. The core network sends D2D link establishment information over macrocell downlink communication resources to at least one of the wireless communication devices where the link establishment information allows the wireless communication devices to establish and communication over the D2D communication link.
Abstract:
In a communication system having a plurality of user equipment (UE) devices that are operating in a contention based mode for device-to-device (D2D) communication, each UE device transmits a preferred transmission indicator when a condition for preferred transmission is met at the UE device. If a UE device receives a preferred transmission indicator, the UE device delays transmission of a D2D scheduling assignment (SA) to contend for communication resources for D2D communication. The length of the delay can be based on a number of preferred transmission indicators that are received. The preferred transmission indicator is based on a buffer size in one example.
Abstract:
An apparatus includes an interface and a processor. The interface sends and receives data over a network. The processor uses the interface to transmit a first media file to a device of a user. The first media file presents a first choice between at least two options. The processor uses the interface to receive from the user a first selection in response to the first choice. In response to receiving the first selection, the processor transmits a second media file to the device. The second media file presents a second choice between at least two options. The processor uses the interface to receive from the user a second selection in response to the second choice. The processor identifies, based in part on the first selection and the second selection, a second user as potentially compatible with the user and transmits to the user a profile of the second user.