Random access channel signaling on a shared communication medium
US-2017150523-A1 · May 25, 2017 · US
Terminal apparatus, base station apparatus, and communication method
US2019014598A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019014598-A1 |
| Application number | US-201716073182-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 16, 2017 |
| Priority date | Jan 29, 2016 |
| Publication date | Jan 10, 2019 |
| Grant date | — |
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- Title
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Abstract
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Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in which transmission of the random access preamble is allowed. For a second frame structure type, the downlink control information is used to configure a subframe number of a second uplink subframe in which transmission of the random access preamble is allowed and a symbol number of an uplink symbol in the second uplink subframe.
First claim
Opening claim text (preview).
1 .- 8 . (canceled) 9 . A terminal apparatus comprising, a transmission circuitry configured to and/or programmed to transmit a random access preamble on a PRACH, and a reception circuitry configured to and/or programmed to receive a downlink control information with CRC parity bits scrambled by RA-RNTI (Random access-Radio Network Temporary Identifier), wherein the RA-RNTI is determined at least based on a symbol number at which the PRACH starts. 10 . The terminal apparatus according to claim 1 , wherein the RA-RNTI is determined at least based on an index in addition to the symbol number, the index is a number of a subframe in a frame with 10 ms for the PRACH, the subframe comprises 14 symbols. 11 . The terminal apparatus according to claim 2 , wherein the index is 1 ms in time length. 12 . A base station apparatus comprising, a reception circuitry configured to and/or programmed to receive a random access preamble on a PRACH, and a transmission circuitry configured to and/or programmed to transmit a downlink control information with CRC parity bits scrambled by RA-RNTI (Random access-Radio Network Temporary identifier), wherein the RA-RNTI is determined at least based on a symbol number at which the PRACH starts. 13 . The base station apparatus according to claim 4 , wherein the RA-RNTI is determined at least based on an index in addition to the symbol number, the index is a number of a subframe in a frame with 10 ms for the PRACH, the subframe comprises 14 symbols. 14 . The base station apparatus according to claim 5 , wherein the index is 1 ms in time length. 15 . A communication method of a terminal apparatus, the communication method comprising the steps of: transmitting a random access preamble on a PRACH; and receiving a downlink control information with CRC parity bits scrambled by RA-RNTI (Random access-Radio Network Temporary Identifier), wherein the RA-RNTI is determined at least based on a symbol number at which the PRACH starts. 16 . A communication method of a base station apparatus, the communication method comprising the steps of: receiving a random access preamble on a PRACH; and transmitting a downlink control information with CRC parity bits scrambled by RA-RNTI (Random access-Radio Network Temporary Identifier), wherein the RA-RNTI is determined at least based on a symbol number at which the PRACH starts.
Assignees
Inventors
Classifications
- H04W16/14Primary
Spectrum sharing arrangements {between different networks} · CPC title
- H04W74/0866Primary
using a dedicated channel for access · CPC title
Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title
Wireless resource allocation · CPC title
in the downlink direction of a wireless link, i.e. towards a terminal · CPC title
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Frequently asked questions
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- What does patent US2019014598A1 cover?
- Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in…
- Who is the assignee on this patent?
- Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification H04W16/14. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 10 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).