Abstract
In an aspect a method and apparatus for performing random access in a wireless communication system is provided. A user equipment (UE) receives a first set of random access channel (RACH) resources for a short transmission time interval (TTI) and a second set of RACH resources for a normal TTI from an eNodeB (eNB) and performs random access towards the eNB by using the first set of RACH resources for the short TTI. In another aspect a method and apparatus for performing contention based uplink (UL) transmission in a wireless communication system is provided. A UE receives resources for contention based UL (CB-UL) transmission and performs the CB-UL transmission by using the resources for the CB-UL transmission.
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5G | 23/07/2018 | ISLD-201807-058 | LG | Yes | Basis Patent |
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Technologies


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Use Cases

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Claim
1. A method for performing, by a user equipment (UE), random access in a wireless communication system, the method comprising:
receiving a first set of random access channel (RACH) resources for a short transmission time interval (TTI) and a second set of RACH resources for a normal TTI from an eNodeB (eNB); and performing random access towards the eNB by using the first set of RACH resources for the short TTI, wherein the first set of RACH resources is configured for a specific carrier, for a specific group of carriers, for a specific cell, for a specific cell group (CG), for a specific timing advance group (TAG), for a specific UE group, for a specific logical channel or for a specific logical channel group (LCG).', 'receiving a first set of random access channel (RACH) resources for a short transmission time interval (TTI) and a second set of RACH resources for a normal TTI from an eNodeB (eNB); and', 'performing random access towards the eNB by using the first set of RACH resources for the short TTI,', 'wherein the first set of RACH resources is configured for a specific carrier, for a specific group of carriers, for a specific cell, for a specific cell group (CG), for a specific timing advance group (TAG), for a specific UE group, for a specific logical channel or for a specific logical channel group (LCG).
2. The method of claim 1, wherein the random access is performed in the short TTI.
3. The method of claim 1, wherein the random access is performed at the specific carrier, at the specific group of carriers, at the specific cell, at the specific CG or at the specific TAG.
4. The method of claim 1, wherein the random access is performed to transmit a scheduling request due to data available for the specific logical channel or for the specific LCG.
5. The method of claim 1, wherein the eNB considers that the UE supports the short TTI.
6. The method of claim 1, further comprising receiving an indication indicating which cell, which CG, which radio bearer, which LCG, which carrier, or which group of carriers is configured for the short TTI from the eNB.
7. The method of claim 6, wherein the indication is received via a radio resource control (RRC) connection reconfiguration.
8. A method for performing, by a user equipment (UE), contention based uplink (UL) transmission in a wireless communication system, the method comprising:
receiving resources for contention based UL (CB-UL) transmission; and performing the CB-UL transmission by using the resources for the CB-UL transmission, wherein the resources for the CB-UL transmission is configured for a specific carrier, for a specific group of carriers, for a specific cell, for a specific cell group (CG), for a specific timing advance group (TAG), for a specific UE group, for a specific logical channel or for a specific logical channel group (LCG).', 'receiving resources for contention based UL (CB-UL) transmission; and', 'performing the CB-UL transmission by using the resources for the CB-UL transmission,', 'wherein the resources for the CB-UL transmission is configured for a specific carrier, for a specific group of carriers, for a specific cell, for a specific cell group (CG), for a specific timing advance group (TAG), for a specific UE group, for a specific logical channel or for a specific logical channel group (LCG).
9. The method of claim 8, wherein the CB-UL transmission is one of a contention based physical uplink shared channel (CB-PUSCH) transmission or a contention based scheduling request (CB-SR) transmission
10. The method of claim 9, wherein the CB-PUSCH transmission comprises transmission of a buffer status report (BSR)
11. The method of claim 9, wherein the CB-UL transmission is performed at the specific carrier, at the specific group of carriers, at the specific cell, at the specific CG or at the specific TAG
12. The method of claim 8, wherein the CB-UL transmission is performed for data available for the specific logical channel or for the specific LCG
13. The method of claim 8, wherein the eNB considers that the UE supports the CB-UL transmission
14. The method of claim 8, further comprising receiving an indication indicating which cell, which CG, which radio bearer, which LCG, which carrier, or which group of carriers is configured for the CB-UL transmission from the eNB
15. The method of claim 14, wherein the indication is received via a radio resource control (RRC) connection reconfiguration.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.