PRACH signals with different bandwidths
First Claim
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1. A method performed by a user equipment (UE), the method comprising:
- transmitting a first Physical Random Access Channel (PRACH) signal to a radio network node, wherein the first PRACH signal has a first frequency bandwidth; and
transmitting, subsequent to the transmission of the first PRACH signal, a second PRACH signal to the radio network node, wherein the second PRACH signal has a second frequency bandwidth that is different from the first frequency bandwidth,wherein the first PRACH signal and second PRACH signal are transmitted as parts of a same random access procedure.
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Abstract
The present disclosure concerns radio communication. More particularly, the present disclosure concerns random access procedures used in communication between user equipments (UEs) and radio network nodes, such as evolved NodeB'"'"'s. According to one exemplary embodiment disclosed herein, a method in a UE 10 comprises transmitting 110, 130 two or more Physical Random Access Channel, PRACH, signals, where the two or more PRACH signals have different frequency bandwidths. Hereby it is made possible to improve the resource utilization during the random access procedure.
7 Citations
28 Claims
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1. A method performed by a user equipment (UE), the method comprising:
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transmitting a first Physical Random Access Channel (PRACH) signal to a radio network node, wherein the first PRACH signal has a first frequency bandwidth; and transmitting, subsequent to the transmission of the first PRACH signal, a second PRACH signal to the radio network node, wherein the second PRACH signal has a second frequency bandwidth that is different from the first frequency bandwidth, wherein the first PRACH signal and second PRACH signal are transmitted as parts of a same random access procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method performed by a radio network node, the method comprising:
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receiving a first Physical Random Access Channel (PRACH) signal from a user equipment (UE), wherein the first PRACH signal has a first frequency bandwidth; and receiving, subsequent to the reception of the first PRACH signal, a second PRACH signal from the UE, wherein the second PRACH signal has a second frequency bandwidth that is different from the first frequency bandwidth, wherein the first PRACH signal and the second PRACH signal are received as parts of a same random access procedure. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A user equipment (UE), comprising:
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a transmitter configured to transmit a first Physical Random Access Channel (PRACH) signal to a radio network node, wherein the first PRACH signal has a first frequency bandwidth; and
further configured to subsequently transmit a second PRACH signal to the radio network node, wherein the second PRACH signal has a second frequency bandwidth that is different from the first frequency bandwidth,wherein the transmitter is configured to transmit the first PRACH signal and the second PRACH signal as parts of a same random access procedure. - View Dependent Claims (21, 22, 23, 24)
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25. A radio network node comprising:
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a receiver configured to receive a first Physical Random Access Channel (PRACH) signal from a user equipment (UE) wherein the first PRACH signal has a first frequency bandwidth; and
configured further to subsequently receive a second PRACH signal from the UE, wherein the second PRACH signal has a second frequency bandwidth that is different from the first frequency bandwidth,wherein the receiver is configured to receive the first PRACH signal and the second PRACH signal as parts of a same random access procedure. - View Dependent Claims (26, 27, 28)
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Specification