摘要:
In radio communication networks, such as the Long Term Evolution (LTE) or the LTE-Advanced (LTE-A) of the 3rd Generation Partnership Project (3GPP), a user equipment (UE) may communicate with another UE via a base station. UEs may also communicate directly with each other by applying resources dedicated by the network for a device-to-device (D2D) direct communication. One part of device-to-device (D2D) communication is discovery to find other interesting peers (in general a peer can mean an application, user, service, device, etc.) in proximity. The discovery can be implemented either using the direct radio signals between the devices or it may utilise network side in the process. The same discovery process may be utilised in relation to small cells. A system information block SIB comprising information on small cell discovery and D2D is generated. Any change in the SIB is indicated in a paging message. The UE receiving the paging message is thereby requested to also receive the related SIB to apply the changed information.
摘要:
An apparatus and a method is proposed, by which transmission operation is performed during a transmission on period and transmission operation is suspended during a transmission off period, wherein counting of at least one transmission related timer is suspended during the transmission off period.
摘要:
Apparatus and method for communication are provided. The solution includes controlling the communication of a transceiver on shared data channels using a data channel slot including a sensing period and a data period and controlling a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot including a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period of a data channel slot.
摘要:
A method, apparatus and computer program product are provided to facilitate synchronization of one or more stations with an access point when the stations have awakened from a sleep period. In the context of a method, a channel switch announcement is caused to be provided on a first channel that indicates that an access point is to switch to a second channel. The method also provides for the access point to switch to the second channel and, following switching of the access point to the second channel, the method causes a post-announcement to be provided on the first channel indicating that the access point previously switched to the second channel.
摘要:
The present invention proposes an apparatus which comprises a communication module configured for communication in a carrier aggregation mode aggregating a primary and at least one secondary carrier, a measurement module, and a control module, configured to retrieve measurement information pertaining to a measurement to be conducted of at least one secondary carrier associated to the primary carrier in the carrier aggregation mode, and instruct the measurement module to conduct a measurement of the at least one secondary carrier based on the measurement information, determine, based on a measurement result, an extent to which the measured secondary carrier is usable for transmission. Also, a corresponding method and computer program product is proposed.
摘要:
Embodiments of the invention provide methods, devices and computer programs arranged to control provisioning of device-to-device (D2D) communication services in a communication network. One embodiment includes an apparatus including a processing system arranged to cause the apparatus to: assign a credential of a first type to a first D2D device; store an association between a validity condition and the credential of the first type, wherein the validity condition is dependent on a characteristic of a D2D communication service; transmit data indicative of the credential of the first type for reception by the first D2D device, said credential being for use in verification of said D2D communication service to be provided by the first D2D device to a second, different, D2D device; and maintain an operative state for the D2D communication in dependence on said association.
摘要:
Embodiments of the invention provide methods, devices and computer programs arranged to facilitate access to device-to-device (D2D) communication services in a communication network. One embodiment includes an apparatus for use in controlling access to a D2D communication service in a communication network, the apparatus including a processing system arranged to cause the apparatus to: receive a D2D discovery signal including data indicative of said D2D communication service; determine a verification state for the D2D communication service as one of a first verification state and a second, different, verification state, on the basis of said received D2D discovery signal, the first verification state being one in which said D2D communication service can be verified by the apparatus; and in the event that said D2D communication service is determined to be in the second verification state, transmit data indicative of said D2D communication service for verification by the communication network.
摘要:
Downlink common control information communicated in a first network (such as a macro network or a small cell) between a first/macro access node and a user equipment UE is mapped to an uplink resource. The first/macro access node and UE then tune to the mapped uplink resource to send or receive dedicated control information about the UE concerning a second network (an underlay network such as a femto CSG or D2D network). In one embodiment the DCI may be within a downlink assignment indicated by P-RNTI, RA-RNTI, or SI-RNTI; and the mapping uses a control channel element which carries the P-RNTI or the RA-RNTI or the SI-RNTI. In another the mapped uplink resource is a format 1a or format 1b PUCCH and the common control information requires neither an acknowledgement nor a negative acknowledgement. The dedicated control information may inform about interference experienced by the UE with the second network.
摘要:
A feedback radio resource in a license-exempt frequency band maps from a data radio resource to at least one frequency sub-band which the data resource excludes. The feedback resource is also spaced in time from the data resource by a predetermined interval. Feedback (ACK/NACK) for data received in the data resource is then sent in the feedback resource. In various embodiments the sub-band is one or more edges of the data resource channel, or of a license-exempt component carrier. The predetermined interval may be a function of how much of the data resource is occupied by data. The data transmitting device delays sending its data by a time offset from the end of a previous transmission on that channel, or if it does not know the end time it delays until the predetermined interval plus the length of the feedback resource have lapsed. Various synchronization aspects are also disclosed.
摘要:
There are provided measures for channel access control. Such measures may exemplarily comprise obtaining a contention window assignment including at least an assignment of a size of a contention window for contention-based channel access, accessing at least one logical channel in a contention-based manner according to the contention window assignment, including allocating resources to the at least one logical channel for data transmission, and modifying the size of the contention window based on a result of the resource allocation in terms of an aggregated bit rate allocated for data transmission and an aggregate target bit rate requirement of prioritized bit rates of the at least one logical channel.