Abstract
A method a base station a User Equipment (UE) and a system for sending and receiving Physical Downlink Control Channel (PDCCH) signaling are disclosed. A method includes determining locations of a first search space and a second search space of a User Equipment (UE). A method also includes sending PDCCH signaling with no Carrier Indication Field (CIF) to the UE in a physically overlapped region between the first search space and the second search space if the physically overlapped region exists and a length of the PDCCH signaling with no CIF in the first search space is equal to a length of PDCCH signaling with the CIF in the second search space.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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5G | 01/01/2019 | ISLD-201812-071 | HUAWEI |
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Specification Information
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Technologies
Search Space
Product
Base Station (eNB/gNB)
Use Cases
Services
Claim
1. A machine-readable storage medium having stored thereon, programming for execution by a machine, the programming including instructions to:
determine locations of a first search space and a second search space, wherein the first search space and the second search space comprises a plurality of control channel elements (CCEs), and wherein the PDCCH signaling is made up of at least one CCE of the first search space or of the second search space;
determine whether the first search space and the second search space overlap in at least one of the plurality of CCEs, and determine whether a length of the PDCCH signaling excluding a carrier indication field (CIF) in the first search space is equal to a length of the PDCCH signaling including the CIF in the second search space; and
when the first search space and the second search space overlap in the at least one of the plurality of CCEs and when the length of the PDCCH signaling excluding the CIF in the first search space is equal to the length of the PDCCH signaling including the CIF in the second search space, transmit, in the at least one of the plurality of CCEs over which the first search space and overlaps the second search space, the PDCCH signaling including the CIF to the UE.
2. The machine-readable storage medium according to claim 1, wherein the first search space is a common search space (CSS), and the second search space is a UE-specific search space (UESS).
3. The machine-readable storage medium according to claim 2, wherein a CCE level of the PDCCH signaling in the CSS is 4 or 8, and wherein a CCE level of the PDCCH signaling in the UESS is 4 or 8.
4. The machine-readable storage medium according to claim 1, wherein the first search space comprises a first UE-specific search space (UESS) that is used to schedule a first component carrier (CC) of the UE, and wherein the second search space comprises a second UESS that is used to schedule a second CC of the UE.
5. The machine-readable storage medium according to claim 1, wherein the instructions to determine whether the first search space and the second search space overlap in the at least one of the plurality of CCEs includes instructions to:
determine whether there is at least one CCE in the plurality of CCEs whose index in the first search space is the same as an index in the second search space, wherein the at least one CCE whose index in the first search space is the same as the index in the second search space comprises the at least one of the plurality of CCEs over which the first search space overlaps the second search space.
6. The machine-readable storage medium according to claim 1, wherein the programming further includes instructions to:
cease transmitting the PDCCH signaling excluding the CIF in the at least one of the plurality of CCEs over which the first search space overlaps the second search space.
7. A machine-readable storage medium having stored thereon, programming for execution by a machine, the programming including instructions to:
receive PDCCH signaling from a base station, wherein the PDCCH signaling is made up of at least one control channel element (CCE) of a first search space or a second search space, and wherein the first search space and the second search space comprise a plurality of CCEs; and
when the first search space and the second search space overlap in at least one of the plurality of CCEs and when a length of the PDCCH signaling excluding a carrier indication field (CIF) in the first search space is equal to a length of PDCCH signaling including the CIF in the second search space, parse the received PDCCH signaling including the CIF that is positioned within the at least one of the plurality of CCEs over which the first search space overlaps the second search space.
8. The machine-readable storage medium according to claim 7, wherein the first search space is a common search space (CSS), and the second search space is a UE-specific search space (UESS).
9. The machine-readable storage medium according to claim 7, wherein the programming further includes instructions to:
determine locations of the first search space and second search space; and
determine whether the first search space and the second search space overlap in the at least one of the plurality of CCEs.
10. The machine-readable storage medium according to claim 9, wherein the instructions to determine whether the first search space and the second search space overlap in the at least one of the plurality of CCEs include instructions to:
determine whether there is at least one CCE in the plurality of CCEs whose index in the first search space is the same as the index in the second search space, wherein the at least one CCE whose index in the first search space is the same as the index in the second search space is the at least one of the plurality of CCEs over which the first search space overlaps the second search space.
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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.