Abstract:
The disclosure relates to performing phase compensation at a transmitter. A processing device for a network access node generates a phase compensated modulation symbol based on at least one first modulation symbol and at least on one of a frequency offset parameter and a time offset parameter. The frequency offset parameter may be determined based on an offset between a reference frequency f0 and a DC (0 Hz) frequency such that the frequency offset parameter corresponds to the reference frequency f0. Also, the reference frequency f0 can be at least partly based on the carrier of up-conversion frequency used by the processing device and the reference frequency f0 can be the carrier for up-conversion frequency. The phase compensated symbol is transmitted to a receiver, such as a client device. Furthermore, the disclosure also relates to corresponding methods and a computer program.
Abstract:
According to a first aspect, a client device is configured to: transmit a beam report, for example to a network device, wherein the beam report comprises information about a set of N transmit, Tx, beams in a downlink and measurement values related to the N Tx beams; obtain information about selected K Tx beams being a subset of the set of N Tx beams; obtain mapping information between K indicators and the selected K Tx beams, wherein each of the K indicator identifies one of the selected K Tx beams; and receive, for example from the network device, a downlink, DL, signal using the obtained information about the selected K Tx beams and the mapping information. According to another aspect a network device is provided. According to another aspects methods of operating the devices are provided and a computer program.
Abstract:
A pilot signal transmission method, a channel estimation method, and an apparatus are provided, and the method for a pilot signal transmission includes: transmitting a pilot signal 1 CPICH1 over a first antenna, and transmitting a pilot signal 2 CPICH2 over a second antenna; transmitting a pilot signal CPICHk1 over a k1th antenna; and when it is determined that a terminal of a first category in the MIMO system is scheduled, transmitting a pilot signal CPICHk2 over the k1th antenna. Interference caused by a pilot signal to a traditional terminal is better reduced, performance of the traditional terminal is ensured while the terminal of the first category properly works in the MIMO system, and power consumption for transmitting a pilot signal is effectively reduced.
Abstract:
A communication method includes: obtains a first DAI in a first downlink control channel associated with transmission of a first transport block, wherein the first DAI indicates a first scheduling assignment for the first transport block; obtains a second DAI in a second downlink control channel associated with transmission of a second transport block, wherein the second DAI indicates a second scheduling assignment for the second transport block; determines that at least one value of the second DAI is an assigned value identical to a value of the first DAI.
Abstract:
Methods and apparatuses for indication of multiple data channels in a single control message are described. A network access node transmits a control message to a client device. The control message comprises a first control information associated with a first data channel (510) and a second control information associated with a second data channel. The first data channel and the second data channel do not overlap in frequency. The network access node further concurrently transmit a first data packet in the first data channel and a second data packet in the second data channel to the client device.
Abstract:
The invention relates to a network access node (100) and a client device (300) for content type indication. The network access node selects a subset of bits among a set of bits in a second data packet 504 associated with the first data packet (502) based on the content type for the first data packet (502). The selected subset of bits is scrambled with a first scrambling sequence associated with an identity of the client device (300). The first data packet (502) and the second data packet (504) is transmitted to the client device (300). Upon reception of the first data packet (502) and the second data packet (504) the client device (300) descrambles the scrambled subset of bits in the second data packet (504) using a first scrambling sequence associated with an identity of the client device (300) to determine the content type for the first data packet (502).
Abstract:
Method is provided, including: determining, by a base station, a current time period in which an end moment of a current control channel is located in a first transmission time interval (TTI), where the first TTI includes at least two time periods, and a start moment of a data channel corresponding to a control channel that ends in each of the at least two time periods is located in a different TTI; sending, by the base station to user equipment in the first TTI, control information carried on the current control channel, where the control information is configured to schedule a current data channel corresponding to the current control channel; determining, by the base station, a second TTI in which a start moment of the current data channel is located; and exchanging, by the base station, data of the current data channel with the user equipment in the second TTI.
Abstract:
It is an object to provide a procedure for handling failure of a subset of serving beam pair links in wireless radio communication. A client device is configured to monitor, independently, a link quality of each serving downlink (DL) beam pair link (BPL) of the client device; detect at least one failed DL BPL based on the monitoring, where the at least one failed DL BPL is a subset of the monitored serving DL BPLs; choose an uplink, UL, BPL, where the chosen UL BPL corresponds to an available serving DL BPL of the monitored serving DL BPLs; and transmit a beam report within a predetermined time period from the detection through a non-contention-based channel using the chosen UL BPL, where the beam report indicates the at least one failed DL BPL. A client device, a network device, methods and a computer program are included.
Abstract:
A method for selecting a transport format in an uplink multiple-input multiple-output system and a related method and a device are used by a user equipment to select a transport format in a case in which the user equipment is in a dual-stream transmission mode of the ULMIMO and inter-stream interference is considered.