Method and apparatus for improving uplink performance at a user equipment
First Claim
1. A method for improving uplink (UL) performance at a user equipment (UE), comprising:
- identifying failure of a random access channel (RACH) preamble when the UE is communicating with a current serving cell of the UE;
increasing transmission power of successive RACH preambles in response to the identifying of the failure of the RACH preamble;
identifying failure of the successive RACH preambles after increasing the transmission power of the successive RACH preambles;
comparing signals received on a downlink at the UE via a first path and a second path from the current serving cell of the UE, wherein the comparing includes identifying that a difference between strength of the signals is within in a pre-defined range; and
determining that a RACH preamble failure problem exists at the UE based at least on the comparing of the signals received on the downlink and the identifying of the failure of the successive RACH preambles.
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Abstract
The present disclosure presents a method and apparatus for improving uplink (UL) performance at a user equipment (UE). For example, the method may include identifying a random access channel (RACH) preamble failure when the UE is communicating with a current serving cell of the UE, increasing transmission power of successive RACH preambles based at least on the identifying, comparing signals received on a downlink at the UE via a first path and a second path from the current serving cell of the UE, and determining that a RACH preamble failure problem exists at the UE based at least on the comparing of the signals received on the downlink and identifying of successive RACH preamble failures. As such, improved performance uplink (UL) performance at a UE may be achieved.
19 Citations
30 Claims
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1. A method for improving uplink (UL) performance at a user equipment (UE), comprising:
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identifying failure of a random access channel (RACH) preamble when the UE is communicating with a current serving cell of the UE; increasing transmission power of successive RACH preambles in response to the identifying of the failure of the RACH preamble; identifying failure of the successive RACH preambles after increasing the transmission power of the successive RACH preambles; comparing signals received on a downlink at the UE via a first path and a second path from the current serving cell of the UE, wherein the comparing includes identifying that a difference between strength of the signals is within in a pre-defined range; and determining that a RACH preamble failure problem exists at the UE based at least on the comparing of the signals received on the downlink and the identifying of the failure of the successive RACH preambles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for improving uplink (UL) performance at a user equipment (UE), comprising:
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means for identifying failure of a random access channel (RACH) preamble when the UE is communicating with a current serving cell of the UE; means for increasing transmission power of successive RACH preambles in response to the identifying of the failure of the RACH preamble; means for identifying failure of the successive RACH preambles after increasing the transmission power of the successive RACH preambles; means for comparing signals received on a downlink at the UE via a first path and a second path from the current serving cell of the UE, wherein the comparing includes identifying that a difference between strength of the signals is within in a pre-defined range; and means for determining that a RACH preamble failure problem exists at the UE based at least on the comparing of the signals received on the downlink and the identifying of the failure of the successive RACH preambles. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium storing computer executable code for improving uplink (UL) performance at a user equipment (UE), comprising:
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code for identifying failure of a random access channel (RACH) preamble when the UE is communicating with a current serving cell of the UE; code for increasing transmission power of successive RACH preambles in response to the identifying of the failure of the RACH preamble; code for identifying failure of the successive RACH preambles after increasing the transmission power of the successive RACH preambles; code for comparing signals received on a downlink at the UE via a first path and a second path from the current serving cell of the UE, wherein the comparing includes identifying that a difference between strength of the signals is within in a pre-defined range; and code for determining that a RACH preamble failure problem exists at the UE based at least on the comparing of the signals received on the downlink and the identifying of the failure of the successive RACH preambles. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. An apparatus for improving uplink (UL) performance at a user equipment (UE), comprising:
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a random access channel (RACH) failure identifying component to identify failure of a RACH preamble when the UE is communicating with a current serving cell of the UE; a transmission power component to increase transmission power of successive RACH preambles in response to the identifying of the failure of the RACH preamble; the RACH failure identifying component further configured to identify failure of the successive RACH preambles after increasing the transmission power of the successive RACH preambles; a downlink signal comparing component to compare signals received on a downlink at the UE via a first path and a second path from the current serving cell of the UE, wherein the comparing includes identifying that a difference between strength of the signals is within in a pre-defined range; and a RACH preamble failure determining component to determine that a RACH preamble failure problem exists at the UE based at least on the comparing of the signals received on the downlink and the identifying of the failure of the successive RACH preambles. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification