摘要:
A user equipment (UE) includes a request receipt component, an interference component, and a grant/deny component. The request receipt component is configured to receive a first signal indicating a request to transmit to the UE from a first transmitting UE and to receive one or more additional signals indicating that one or more additional transmitting UEs are requesting to transmit to corresponding target UEs. The interference component identifies, based on a received power of the first signal and the one or more additional signals, one or more potentially incompatible UEs. The incompatible UEs may include at least one of the one or more additional transmitting UEs. The grant/deny component is configured to send a signal indicating a block on transmission by the one or more incompatible UEs.
摘要:
A method for determining a transmission direction for a communication of a network component of a radio communications network may include: determining a reference transmission direction based on a plurality of predetermined transmission directions that a network component of a radio communications network is configured to transmit at; selecting a plurality of candidate transmission directions in a spatial vicinity of the reference transmission direction, the plurality of candidate transmission directions being a subset of the plurality of predetermined transmission directions; and selecting a transmission direction for a communication of the network component from the reference transmission direction and the plurality of candidate transmission directions based on a selection criterion.
摘要:
Described are methods and devices for enabling D2D communications with signal structures that require minimal changes to the current LTE architecture. In the embodiments described, the eNB grants resources to UEs for D2D communication and either initiates or permits a pair of UEs to establish a D2D link. Certain embodiments are designed to minimize changes to the current LTE control signaling structure by having the control signaling always come from the eNB as in a normal cellular link so that the transmitting UE transmits over a data channel (e.g., PUSCH/PDSCH) that the receiving UE is able to decode.
摘要:
Embodiments of a User Equipment (UE) and methods for packet based device-to-device (D2D) discovery in an LTE network are generally described herein. In some embodiments, UE may be enabled for proximity services and may be configured to receive signaling from an enhanced node B (eNB) indicating resources allocated for D2D discovery. The UE may configure a discovery packet in accordance with a predetermined configuration to have at least a discovery payload and a cyclic-redundancy check (CRC). The discovery payload may include discovery-related content. The UE may be configured to transmit the discovery packet on at least some of the indicated resources for receipt by a receiving UE. In some embodiments, a demodulation reference signal (DMRS) may be selected to indicate a payload size and/or MCS of the discovery packet's payload.
摘要:
A system and method of training antennas for two devices having heterogeneous antenna configurations in a wireless network is disclosed. The method includes communicating one or more estimation training sequences between two devices via a phased array antenna and a switched array antenna, wherein a beamforming vector of the phased array antenna is switched between phase vectors within a set of weight vectors while the switched array antenna is switched within a plurality of antenna sectors. The method further includes tuning at least one of the phase array and switched array antennas with an antenna parameter selected based at least in part on the one or more estimation training sequences. The method further includes communicating data messages via at least one of the phase array and switched array antennas so tuned.
摘要:
A system and method for multicast servicing in a unicast subframe is disclosed. The method using an evolved Node B (eNodeB) comprises the operation of setting up a multicast service on each of a plurality of user equipments (UEs) in a multicast group using a multicast identifier. The operation of allocating unicast data channel resources for the multicast group using unicast control channel information coded by the multicast identifier follows. The method using a UE comprises the operation of receiving a multicast identifier for a multicast group from an eNodeB, wherein the multicast identifier is shared among a plurality of UEs in the multicast group. The operation of receiving unicast control channel information coded by the multicast identifier from the eNodeB follows. The next operation of the method is extracting control channel information for allocating unicast data channel resources from the received unicast control channel information using the multicast identifier.
摘要:
A remote radio unit (RRU) in a radio base station system can include a cyclic prefix (CP) module having a CP adder for downlink channel processing includes a CP remover for uplink channel processing. The RRU can be configured to communicate with a base band unit (BBU) via a physical communication link and communicate with a wireless mobile device via an air interface. The BBU can be configured for media access control (MAC) layer processing.
摘要:
A system and method for multicast servicing in a unicast subframe is disclosed. The method using a transmission station comprises the operation of setting up a multicast service on each of a plurality of mobile devices in a multicast group using a multicast cell radio network temporary identifier (MC-RNTI) with a common cell identifier (CID). The operation of allocating physical downlink shared data channel (PDSCH) resources for the multicast group using a physical downlink control channel (PDCCH) masked by the MC-RNTI follows.
摘要:
Embodiments of the present disclosure provide methods, systems, and apparatuses related to a partially random permutation sequence generator. In embodiments, a partially random permutation may provide a large distance between neighboring elements while keeping a degree of randomness in the distribution. In some embodiments, it may be applied to distribute resource units across subchannels to provide frequency diversity and/or diversity gain in OFDMA-based wireless broadband technologies. Other embodiments may be described and claimed.
摘要:
A particular kind of component carrier that may be used as a secondary cell in an LTE system is a new type carrier that has reduced or eliminated legacy control signaling such as the omission of CRSs. Alternative techniques are described for performing timing and frequency synchronization in the downlink between an eNB and a UE when CRSs are not present in a component carrier. These techniques involve using either channel state information reference signals or UE-specific reference signals.