System and method for initial access to relays
First Claim
Patent Images
1. A user agent, comprising:
- a processor configured to promote transmission of a random access channel (RACH) preamble on a RACH to promote attachment of the user agent to an access node, wherein the processor is further configured to promote transmission of a message to the access node, wherein the message contains an identity of one or more relay nodes to which the user agent can be transferred, and wherein the processor is further configured to request the access node to hand-over the user agent to one of the relay nodes, and, after requesting, to promote transmission of a second RACH preamble to promote attachment of the user agent to the one of the relay nodes, wherein the second RACH preamble is one of a category of RACH preambles dedicated for transmission to the one of the relay nodes.
8 Assignments
0 Petitions
Accused Products
Abstract
A user agent (UA) in a wireless communication system. The UA is configured to transmit a preamble on a random access channel (RACH) to an access node in order to attach to the access node. The UA transmits a message to the access node, wherein the message contains an identity of one or more relay nodes to which the UA can be transferred. The UA requests the access node to hand-over the UA to one relay node of the one or more relay nodes.
-
Citations
34 Claims
-
1. A user agent, comprising:
a processor configured to promote transmission of a random access channel (RACH) preamble on a RACH to promote attachment of the user agent to an access node, wherein the processor is further configured to promote transmission of a message to the access node, wherein the message contains an identity of one or more relay nodes to which the user agent can be transferred, and wherein the processor is further configured to request the access node to hand-over the user agent to one of the relay nodes, and, after requesting, to promote transmission of a second RACH preamble to promote attachment of the user agent to the one of the relay nodes, wherein the second RACH preamble is one of a category of RACH preambles dedicated for transmission to the one of the relay nodes. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
8. A method implemented in a user agent, the method comprising:
-
transmitting a random access channel (RACH) preamble on a RACH to promote attachment to an access node; attaching to the access node; transmitting a message to the access node, wherein the message contains an identity of one or more relay nodes to which the user agent can be transferred; requesting the access node to hand-over the user agent to one of the relay nodes; after requesting, transmitting a second RACH preamble to promote attachment to the one of the relay nodes; and thereafter attaching the user agent to the one of the relay nodes, wherein the second RACH preamble is a dedicated RACH preamble. - View Dependent Claims (9, 10, 11)
-
-
12. An access node, comprising:
a processor configured to receive a random access channel (RACH) preamble on a RACH from a user agent to promote attachment of the user agent to the access node, wherein the processor is further configured to receive a message from the user agent, wherein the message contains an identity of one or more relay nodes to which the user agent can be transferred, and wherein the processor is further configured to receive a request from the user agent to hand-over the user agent to one of the relay nodes, wherein the processor is further configured to signal a dedicated RACH preamble to the user agent to attach to the one of the relay nodes. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
20. A method implemented in an access node, the method comprising:
-
receiving a random access channel (RACH) preamble on a RACH from a user agent, wherein the RACH preamble belongs to a first category of RACH preambles in a plurality of categories of RACH preambles, wherein the first category of RACH preambles comprises those RACH preambles that are dedicated for receipt by the access node; attaching the user agent to the access node; receiving a message from the user agent, wherein the message contains an identity of one or more relay nodes to which the user agent can be transferred; and receive a request from the user agent to hand-over the user agent to one of the relay nodes. - View Dependent Claims (21, 22)
-
-
23. A relay node comprising:
a processor configured to receive a random access channel (RACH) preamble from a user agent over a RACH, wherein the RACH preamble indicates a temporary random access identification of the user agent, and wherein the processor is further configured to forward the RACH preamble to an access node over a RACH. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
-
33. A method implemented in a relay node, the method comprising:
-
receiving a random access channel (RACH) preamble from a user agent over a RACH, wherein the RACH preamble indicates a temporary random access identification of the user agent; and forwarding the RACH preamble to an access node over a RACH. - View Dependent Claims (34)
-
Specification