摘要:
A network node, a UE and respective methods therein are provided for enabling transmission of data using a resource element reserved for CRS. The method in the network node for scheduling a downlink data transmission to the UE currently connected to the network node, comprises determining to schedule data transmission to the UE using at least one resource element reserved for transmitting CRSs during at least one subframe; and transmitting data to the UE using the at least one resource element reserved for transmitting the at least one CRS during the at least one subframe.
摘要:
A network node, a UE and respective methods therein are provided for enabling transmission of data using a resource element reserved for CRS. The method in the network node for scheduling a downlink data transmission to the UE currently connected to the network node, comprises determining to schedule data transmission to the UE using at least one resource element reserved for transmitting CRSs during at least one subframe; and transmitting data to the UE using the at least one resource element reserved for transmitting the at least one CRS during the at least one subframe.
摘要:
Techniques are disclosed for signaling a pattern of cyclic shifts and orthogonal cover codes for use by a wireless device in multi-layer transmissions. In one example method, a signal includes B bits for identifying a reference signal is received, wherein each of several available reference signals is defined by a cyclic shift and an orthogonal cover code. The B bits are used to identify the cyclic shift and orthogonal cover code according to pre-determined tables that map each value of the B bits to a pattern of cyclic shift and orthogonal cover code combinations for a multi-layer transmission scheme. The patterns for the multi-layer transmission scheme include first and second patterns based on the same cyclic shifts, but where some, but not all, of the cyclic shifts in the first pattern are associated with the same corresponding orthogonal cover codes in the second pattern.
摘要:
Disclosed are methods and apparatuses in user equipments (1400) and network nodes (1410, 420) for controlling transmission power of the user equipments when the user equipments are connected to a wireless network. The disclosed methods and apparatuses deals with independently controlling transmission power of SRS signals and signals comprising traffic data from the user equipment (1400). Thereby, it is possible to use different power levels for SRS signals intended to e.g. a macro node and for traffic data intended to e.g. a pico node.
摘要:
Orthogonality in cyclic shift (CS) and orthogonal cover code (OCC) selection for DMRS in MIMO is improved by new nDMRS to nDMRS(2) mapping patterns. Values in the mapping tables are arranged in sets, with minimum CS separation between the values in each set. Additionally, the semi-static nDMRS is independently configurable for each UL component carrier (CC) in the case of cross-CC scheduling in carrier aggregation, and the PHICH allocation formula that defines the allocation of the PHICH process relative to the kth codeword (CW) on the cth UL CC is a function of both the CS index nDMRS,k,c(2) that is dynamically assigned to a certain layer of the considered CW and the semi-static CS offset nDMRS,c(1) for the cth CC.
摘要:
Orthogonality in cyclic shift (CS) and orthogonal cover code (OCC) selection for DMRS in MIMO is improved by new nDMRS to nDMRS(2) mapping patterns. Values in the mapping tables are arranged in sets, with minimum CS separation between the values in each set. Additionally, the semi-static nDMRS is independently configurable for each UL component carrier (CC) in the case of cross-CC scheduling in carrier aggregation, and the PHICH allocation formula that defines the allocation of the PHICH process relative to the kth codeword (CW) on the cth UL CC is a function of both the CS index nDMRS,k,c(2) that is dynamically assigned to a certain layer of the considered CW and the semi-static CS offset nDMRS,c for the cth CC.
摘要:
Disclosed are methods and apparatuses in user equipments (1400) and network nodes (1410, 420) for controlling transmission power of the user equipments when the user equipments are connected to a wireless network. The disclosed methods and apparatuses deals with independently controlling transmission power of SRS signals and signals comprising traffic data from the user equipment (1400). Thereby, it is possible to use different power levels for SRS signals intended to e.g. a macro node and for traffic data intended to e.g. a pico node.
摘要:
A UE and a method therein for transmission power control of uplink transmissions are provided. The method comprises receiving, through signalling a configuration indicating at least one reference signal, RS, and a reference transmission power level for each indicated RS. The method further comprises measuring received power of the indicated at least one RS, and for each measured received power, determining a pathloss, PL, based on the measured received power and the reference transmission power level for each measured received power. The method further comprises determining an uplink transmission power based on at least one determined PL.
摘要:
A method is provided in a wireless device for controlling output transmission power from the wireless device. A set is selected among a plurality of sets of power step values, which reside in a memory of the wireless device, responsive to criteria defined in the wireless device. A power control command is received from a radio network node. One of the power step values of the selected set is selected responsive to the power control command. The output transmission power from the wireless device is controlled responsive to the selected power step value. Related methods in radio network nodes and apparatuses are disclosed.
摘要:
Some embodiments provide a method for channel estimation in a wireless device. According to the method, the wireless device obtains an indication that a set of antenna ports, or antenna port types, share at least one channel property. The wireless device then estimates one or more of the shared channel properties based at least on a first reference signal received from a first antenna port included in the set, or having a type corresponding to one of the types in the set. Furthermore, the wireless device performs channel estimation based on a second reference signal received from a second antenna port included in the set, or having a type corresponding to one of the types in the set, wherein the channel estimation is performed using at least the estimated channel properties.