Apparatus and methods for relay-assisted uplink communication
First Claim
1. A terminal device arranged to communicate with a base station via a relay device in a wireless communications system, the terminal device comprising:
- a transmitter arranged to transmit an access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required;
a receiver arranged to receive an access request grant response from the base station; and
a control processor operably coupled to the transmitter and receiver and arranged to;
process the access request grant response;
extract transmit power control information therefrom for transmissions to the relay device;
map a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and
generate and transmit a transmission to the relay device at the mapped transmit second power level.
4 Assignments
0 Petitions
Accused Products
Abstract
A terminal device is arranged to communicate with a base station via a relay device in a wireless communications system. The terminal device comprises: a transmitter arranged to transmit a first access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required; a receiver arranged to receive an access request grant response from the base station; and a control processor operably coupled to the transmitter and receiver and arranged to: process the access request grant response; extract transmit power control information therefrom for transmissions to the relay device; map a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and generate and transmit a transmission to the relay device at the mapped transmit second power level.
-
Citations
19 Claims
-
1. A terminal device arranged to communicate with a base station via a relay device in a wireless communications system, the terminal device comprising:
-
a transmitter arranged to transmit an access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required; a receiver arranged to receive an access request grant response from the base station; and a control processor operably coupled to the transmitter and receiver and arranged to; process the access request grant response; extract transmit power control information therefrom for transmissions to the relay device; map a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and generate and transmit a transmission to the relay device at the mapped transmit second power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An integrated circuit for a terminal device arranged to communicate with a base station via a relay device in a wireless communications system, the integrated circuit comprising:
a control processor arranged to; transmit an access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required; receive an access request grant response from the base station; process the access request grant response and extract therefrom transmit power control information for transmissions to the relay device; map a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and generate and transmit a transmission to the relay device at the mapped transmit second power level.
-
10. A method for a terminal device arranged to communicate with a base station via a relay device in a wireless communications system, the method comprising:
-
transmitting an access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required; receiving an access request grant response from the base station; processing the access request grant response and extract therefrom transmit power control information for transmissions to the relay device; mapping a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and generating and transmitting a transmission to the relay device at the mapped transmit second power level. - View Dependent Claims (11)
-
-
12. A wireless communication system comprising:
-
at least one terminal device; at least one base station; and at least one relay device for supporting communications between the at least one terminal device and the at least one base station, wherein the at least one terminal device comprises; a transmitter arranged to transmit an access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required; a receiver arranged to receive an access request grant response from the base station; and a control processor operably coupled to the transmitter and receiver and arranged to; process the access request grant response; extract transmit power control information therefrom for transmissions to the relay device; map a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and generate and transmit a transmission to the relay device at the mapped transmit second power level.
-
-
13. A base station arranged to communicate with a terminal device on an uplink channel via a relay device in a wireless communications system, the base station comprising:
-
a receiver arranged to receive an access request message from the terminal device; and a control processor operably coupled to the receiver and arranged to; process the access request message; extract a relayed control element that indicates relay device uplink assistance was used wherein the relayed control element comprises a power delta from the relay device; and construct and transmit an access request grant response to the terminal device comprising a mapped transmit power value to be applied by the terminal device in relayed communications. - View Dependent Claims (14, 15, 16)
-
-
17. An integrated circuit for a base station arranged to communicate with a terminal device on an uplink channel via a relay device in a wireless communications system, the integrated circuit comprising:
-
a control processor arranged to; receive an access request message from the terminal device; process the first access request message; extract a relayed control element that indicates relay device uplink assistance was used wherein the relayed control element comprises a power delta from the relay device; and construct and transmit an access request grant response to the terminal device comprising a mapped transmit power value to be applied by the terminal device in relayed communications.
-
-
18. A method for a base station arranged to communicate with a terminal device on an uplink channel via a relay device in a wireless communications system, the method comprising:
-
receiving an access request message from the terminal device; processing the access request message; extracting a relayed control element that indicates relay device uplink assistance was used wherein the relayed control element comprises a power delta from the relay device; and constructing and transmitting an access request grant response to the terminal device comprising a mapped transmit power value to be applied by the terminal device in relayed communications. - View Dependent Claims (19)
-
Specification