发明名称 |
RANDOM ACCESS PROCEDURES IN WIRELESS SYSTEMS |
摘要 |
A wireless transmit/receive unit (WTRU) may detect cell congestion by selecting a preamble type as a function of priority level, transmitting the preamble to a serving cell, receiving a random access response (RAR) from the serving cell, determining a congestion state of the serving cell as a function of the received RAR, and/or responding to the congestion state of the serving cell. RACH functionality may be improved by allocating one or more sets of Physical RACH (PRACH) resources to a WTRU. The WTRU may configure the additional PRACH resources based on the allocation. A WTRU may determine a second set of PRACH resources based at least in part on a first set of PRACH resources. A WTRU may determine additional sets of PRACH preambles and may utilize modified PRACH preambles and/or modified PRACH preamble formats. The WTRU may signal additional PRACH resources. |
申请公布号 |
WO2013138701(A3) |
申请公布日期 |
2014.02.27 |
申请号 |
WO2013US31984 |
申请日期 |
2013.03.15 |
申请人 |
INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
PELLETIER, GHYSLAIN;AHMAD, SAAD |
分类号 |
H04W28/02;H04W74/08 |
主分类号 |
H04W28/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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