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US 11,601,874 B2Granted
Uplink carrier access
AssigneeZte Corporation
InventorsLi Niu, Yajun Zhao
Life of this patent
Estimating the term…
Abstract
One or more devices, systems, and/or methods for facilitating access to an uplink carrier are provided. For example, information corresponding to a plurality of uplink carriers may be received from a wireless node. An uplink carrier may be selected from the plurality of uplink carriers based upon the information. A request to access the uplink carrier may be transmitted to the wireless node.
Claims20
A method comprising:
- receiving information corresponding to a plurality of uplink carriers, wherein the information comprises an indication of a frequency of an uplink carrier, a random access channel (RACH) common configuration, and a time alignment (TA) timer common configuration;
- selecting one uplink carrier from the plurality of uplink carriers based upon the information,
- wherein the selection is based on comparing a Reference Signal Received Power (RSRP) of a downlink carrier to a threshold,
- wherein the one uplink carrier has a first frequency in response to the RSRP being below the threshold,
- wherein the one uplink carrier has a second frequency in response to the RSRP being above the threshold,
- wherein the first frequency is lower than the second frequency,
- wherein the one uplink carrier is selected in response to determining a transmission problem with the uplink carrier of the plurality of uplink carriers, and
- wherein the determining the transmission problem includes determining that a random access preamble is transmitted using the uplink carrier up to a threshold number of times;
- and
- performing random access using the one uplink carrier.
7 more elements
An apparatus comprising a processor configured to:
- receive information corresponding to a plurality of uplink carriers, wherein the information comprises an indication of a frequency of an uplink carrier, a random access channel (RACH) common configuration, and a time alignment (TA) timer common configuration;
- select one uplink carrier from the plurality of uplink carriers based upon the information,
- wherein the selection is based on comparing a Reference Signal Received Power (RSRP) of a downlink carrier to a threshold,
- wherein the one uplink carrier has a first frequency in response to the RSRP being below the threshold,
- wherein the one uplink carrier has a second frequency in response to the RSRP being above the threshold,
- wherein the first frequency is lower than the second frequency,
- wherein the one uplink carrier is selected in response to the processor being configured to determine a transmission problem with the uplink carrier of the plurality of uplink carriers, and
- wherein the determined transmission problem includes the processor being configured to determine that a random access preamble is transmitted using the uplink carrier up to a threshold number of times;
- and
- perform random access using the one uplink carrier.
7 more elements
A non-transitory computer readable medium comprising processor executable instructions that when executed by a processor configures the processor to perform a method comprising:
- receiving information corresponding to a plurality of uplink carriers, wherein the information comprises an indication of a frequency of an uplink carrier, a random access channel (RACH) common configuration, and a time alignment (TA) timer common configuration;
- selecting one uplink carrier from the plurality of uplink carriers based upon the information,
- wherein the selection is based on comparing a Reference Signal Received Power (RSRP) of a downlink carrier to a threshold,
- wherein the one uplink carrier has a first frequency in response to the RSRP being below the threshold,
- wherein the one uplink carrier has a second frequency in response to the RSRP being above the threshold,
- wherein the first frequency is lower than the second frequency,
- wherein the one uplink carrier is selected in response to determining a transmission problem with the uplink carrier of the plurality of uplink carriers, and
- wherein the determining the transmission problem includes determining that a random access preamble is transmitted using the uplink carrier up to a threshold number of times;
- and
- performing random access using the one uplink carrier.
7 more elements
A system comprising:
- a base station configured to:
- transmit information corresponding to a plurality of uplink carriers, wherein the information comprises an indication of a frequency of an uplink carrier, a random access channel (RACH) common configuration, and a time alignment (TA) timer common configuration;
- a wireless device configured to:
- receive the information corresponding to the plurality of uplink carriers;
- select one uplink carrier from the plurality of uplink carriers based upon the information,
- wherein the selection is based on comparing a Reference Signal Received Power (RSRP) of a downlink carrier to a threshold,
- wherein the one uplink carrier has a first frequency in response to the RSRP being below the threshold,
- wherein the one uplink carrier has a second frequency in response to the RSRP being above the threshold,
- wherein the first frequency is lower than the second frequency,
- wherein the one uplink carrier is selected in response to the wireless device being configured to determine a transmission problem with the uplink carrier of the plurality of uplink carriers, and
- wherein the determined the transmission problem includes the wireless device being configured to determine that a random access preamble is transmitted using the uplink carrier up to a threshold number of times;
- and
- perform random access using the one uplink carrier.
10 more elements
Dependencies are inferred from the claim text.