System and method for random access backoffs
First Claim
Patent Images
1. A method for performing a random access procedure, the method comprises:
- transmitting, by a user equipment (UE), a first random access preamble as part of a random access procedure; and
determining that the random access procedure has failed and, based thereon;
randomly selecting, by the UE, a backoff time from within a backoff window wherein the backoff window ranges from 0 to a specified multiple of a random access preamble unit, the random access preamble unit being a random access preamble duration;
waiting, by the UE, until the selected backoff time expires; and
transmitting, by the UE, a second random access preamble after the backoff time expires.
0 Assignments
0 Petitions
Accused Products
Abstract
A method of performing a random access procedure includes randomly selecting a backoff time from within a backoff window ranging from 0 to a specified multiple of a random access preamble unit, waiting until a time initialized with the backoff time expires, and retransmitting a random access preamble.
36 Citations
27 Claims
-
1. A method for performing a random access procedure, the method comprises:
-
transmitting, by a user equipment (UE), a first random access preamble as part of a random access procedure; and determining that the random access procedure has failed and, based thereon; randomly selecting, by the UE, a backoff time from within a backoff window wherein the backoff window ranges from 0 to a specified multiple of a random access preamble unit, the random access preamble unit being a random access preamble duration; waiting, by the UE, until the selected backoff time expires; and transmitting, by the UE, a second random access preamble after the backoff time expires. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for performing a random access procedure, the method comprising:
-
determining, by an evolved NodeB (eNB), a backoff parameter value as a multiple of a random access preamble unit associated with a user equipment (UE) participating in the random access procedure, the random access preamble unit being a random access preamble duration; signaling, by the eNB, an indicator of the backoff parameter value; and receiving, by the eNB, a random access preamble in accordance with the backoff parameter value. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A method for transmitting a random access preamble, the method comprising:
-
generating, by a user equipment (UE), the random access preamble; and in response to a number of physical random access channel (PRACH) repetitions per attempt being larger than a threshold; segmenting, by the UE, the random access preamble into a plurality of blocks, and separately transmitting, by the UE, each of the plurality of blocks. - View Dependent Claims (15)
-
-
16. A user equipment (UE) comprising:
-
a non-transitory memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the one or more processors execute the instructions to; transmit a first random access preamble as part of a random access procedure; and determine that the random access procedure has failed and, based thereon; randomly select a backoff time from within a backoff window wherein the backoff window ranges from 0 to a specified multiple of a random access preamble unit, wherein the random access preamble unit is a random access preamble duration; wait until the selected backoff time expires; and transmit a second random access preamble after the backoff time expires. - View Dependent Claims (17, 18, 19, 20)
-
-
21. A user equipment (UE) comprising:
-
a non-transitory memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the one or more processors execute the instructions to; generate a random access preamble; and in response to a number of physical random access channel (PRACH) repetitions per attempt being larger than a threshold; segment the random access preamble into a plurality of blocks, and separately transmit each of the plurality of blocks. - View Dependent Claims (22)
-
-
23. An evolved NodeB (eNB) comprising:
-
a non-transitory memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the one or more processors execute the instructions to; determine a backoff parameter value as a multiple of a random access preamble unit associated with a user equipment (UE) participating in a random access procedure, wherein the random access preamble unit is a random access preamble duration; signal an indicator of the backoff parameter value; and receive a random access preamble in accordance with the backoff parameter value. - View Dependent Claims (24, 25, 26, 27)
-
Specification