Uplink power control
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsRoger Wallerius, Mats-Ola Forslow
Life of this patent
Estimating the term…
Abstract
The embodiments herein relate to a method in a centralized baseband unit (CBU) for generating a common UL-TPC stream in a network. The CBU is connected to a plurality of RRUs. Each RRU is connected to a UE via a respective RLS of a plurality of RLSs. Each respective RLS comprises at least one radio link. The CBU receives, from each RRU a stream of uplink power samples measured for each RRU on the at least one radio link comprised in each respective RLS between the UE and the plurality of RRUs. The CBU generates the common UL-TPC stream based on the received measurements of uplink power. The common UL-TPC stream is to be sent to each RRU for further transmission to the UE.
Claims24
A method in a centralized baseband unit for generating a common uplink transmit power control (UL-TPC) command stream in a communications network, the centralized baseband unit being configured to be connected to a plurality of remote radio units, wherein each remote radio unit of the plurality of remote radio units is configured to be connected to a same user equipment via a respective Radio Link Set (RLS) of a plurality of RLSs, wherein each respective RLS comprises at least one radio link, the method comprising:
- receiving, from each remote radio unit a respective one of a plurality of streams of uplink power samples measured for each remote radio unit on the at least one radio link comprised in each respective RLS between the same user equipment and the plurality of remote radio units;
- and
- generating the common UL-TPC command stream based on the received plurality streams of uplink power sample measurements, where the common UL-TPC command stream is to be sent to each remote radio unit for further transmission of the common UL-TPC command stream from said each remote radio unit to the same user equipment,
- wherein radio band and baseband processing are performed in separate units, and
- wherein each remote radio unit is configured to perform radio band processing and wherein the centralized baseband unit is configured to perform baseband processing.
A method in a user equipment for receiving a common uplink transmit power control (UL-TPC) command stream in a communications network, wherein the user equipment is configured to be concurrently connected to a plurality of remote radio units via a plurality of radio link set (RLS) wherein each respective RLS comprises at least one radio link, and wherein the plurality of remote radio units is configured to be connected to a centralized baseband unit the method comprising:
- receiving a common UL-TPC command stream in a downlink direction from the centralized baseband unit via each remote radio unit of the plurality of remote radio units using the respective RLS;
- detecting at least one active RLS of the plurality of RLS;
- and
- performing soft combining of the detected at least one active RLS using the received common UL-TPC command stream,
- wherein radio band and baseband processing are performed in separate units, and
- wherein each remote radio unit is configured to perform radio band processing and wherein the centralized baseband unit is configured to perform baseband processing.
A centralized baseband unit configured to generate a common uplink transmit power control (UL-TPC) command stream, the centralized baseband unit being comprised in a communications network, the centralized baseband unit being configured to be connected to a plurality of remote radio units, wherein each remote radio unit of the plurality of remote radio units is configured to be connected to a same user equipment via a respective Radio Link Set (RLS) of a plurality of RLSs, wherein each respective RLS comprises at least one radio link, the centralized baseband unit comprises:
- a receiver configured to receive, from each remote radio unit a respective one of a plurality of streams of uplink power samples measured for each remote radio unit on the at least one radio link comprised in each respective RLS between the same user equipment and the plurality of remote radio units;
- and
- a processor configured to generate the common UL-TPC command stream based on the received plurality of streams of uplink power sample measurements, where the common UL-TPC command stream is to be sent to each remote radio unit for further transmission of the common UL-TPC command stream from said each remote radio unit to the same user equipment,
- wherein radio band and baseband processing are performed in separate units, and
- wherein each remote radio unit is configured to perform radio band processing and wherein the centralized baseband unit is configured to perform baseband processing.
A user equipment for receiving a common uplink transmit power control (UL-TPC) command stream, wherein the user equipment is comprised in a communications network, wherein the user equipment is configured to be concurrently connected to a plurality of remote radio units via a plurality of radio link set (RLS) wherein each respective RLS comprises at least one radio link, and wherein the plurality of remote radio units is configured to be connected to a centralized baseband unit, the user equipment comprises:
- a receiver configured to receive a common UL-TPC command stream in a downlink direction from the centralized baseband unit via each remote radio unit of the plurality of remote radio units using the respective RLS;
- and
- a processor configured to:
- detect at least one active RLS of the plurality of RLS;
- and to
- perform soft combining of the detected at least one active RLS using the received common UL-TPC command stream,
- wherein radio band and baseband processing are performed in separate units, and
- wherein each remote radio unit is configured to perform radio band processing and wherein the centralized baseband unit is configured to perform baseband processing.
Dependencies are inferred from the claim text.