METHODS, APPARATUS AND COMPUTER PROGRAMS FOR WIRELESS COMMUNICATIONS
A quasi-colocation relation is determined at a first user equipment server by a network node in a wireless communication network by: discovering, using sidelink communications, a nearby second user equipment; negotiating at least one common reference signal with the second user equipment; determining, using the at least one common reference signal, a first estimate of at least one large-scale property of a first physical channel; receiving, from the second user equipment, at least a second estimate of said at least one large-scale property of a second physical channel; determining a quasi-colocation relation by comparing the first estimate and the second estimate; and notifying a network node of a quasi-colocation relation between the first user equipment and the second user equipment.
1 . A method for determining a quasi-colocation relation at a first user equipment in a wireless communication network, the method comprising:
Discovering, using sidelink communications, a nearby second user equipment,
Negotiating at least one common reference signal with the second user equipment,
Determining, using said at least one common reference signal, a first estimate of at least one large-scale property of a first physical channel,
Receiving, from the second user equipment, at least a second estimate of said at least one large-scale property of a second physical channel,
Determining a quasi-colocation relation by comparing the first estimate and the second estimate, and
Notifying a network node of a quasi-colocation relation between the first user equipment and the second user equipment.
2 . The method according to claim 1 wherein said at least one common reference signal includes a downlink reference signal.
3 . The method according to claim 1 wherein said at least one common reference signal includes a sidelink reference signal.
4 . The method according to claim 1 wherein negotiating at least one common reference signal with the second user equipment includes:
Sending a message over a sidelink, the message comprising at least one reference signal identifier,
Receiving a message from said second user equipment, the message comprising at least one of said at least one reference signal identifier.
5 . A method for configuring an uplink channel at a network node in a wireless network comprising:
Receiving, from a first user equipment, a quasi-colocation indication comprising at least an identity of a second user equipment,
Estimating at least one large-scale property of a first uplink physical channel associated with the first user equipment,
Configuring at least a second physical channel associated with the second user equipment according to the estimated at least one large-scale parameter.
6 . The method according to claim 5 wherein configuring at least a second uplink physical channel associated with the second user equipment includes applying at least a same beamforming parameter for said first and second uplink physical channels.
7 . The method according to claim 5 wherein configuring at least a second uplink physical channel associated with the second user equipment includes reducing Channel State Information feedback rate.
8 . The method according to claim 5 wherein configuring at least a second uplink physical channel associated with the second user equipment includes reducing at least a reference signal transmission rate.
9 . A user equipment for determining a quasi-colocation relation comprising a processor and a memory, the memory comprising computer program instructions adapted to configure the processor to perform the following steps:
Discovering, using sidelink communications, a nearby second user equipment,
Negotiating at least one common reference signal with the second user equipment,
Determining, using said at least one common reference signal, a first estimate of at least one large-scale property of a first physical channel,
Receiving, from the second user equipment, at least a second estimate of said at least one large-scale property of a second physical channel,
Determining a quasi-colocation relation by comparing the first estimate and the second estimate, and
Notifying a network node of a quasi-colocation relation between the first user equipment and the second user equipment.
10 . (canceled)
11 . A wireless network node for configuring an uplink channel comprising a processor and a memory, the memory comprising computer program instructions adapted to configure the processor to perform the following steps:
Receiving, from a first user equipment, a quasi-colocation indication comprising at least an identity of a second user equipment,
Estimating at least one large-scale property of a first uplink physical channel associated with the first user equipment, and
Configuring at least a second physical channel associated with the second user equipment according to the estimated at least one large-scale parameter.
12 . (canceled)
13 . (canceled)
14 . The user equipment according to claim 9 wherein said at least one common reference signal includes a downlink reference signal.
15 . The user equipment according to claim 9 wherein said at least one common reference signal includes a sidelink reference signal.