Abstract
A method of radio link monitoring (RLM) and radio link failure (RLF) handling over a secondary serving cell (SCELL) is proposed. In a wireless network a user equipment (UE) establishes a radio resource control (RRC) connection with a base station (eNB). The UE applies carrier aggregation for multiple component carriers (CCs) configured as multiple serving cells. The UE performs radio link monitoring over a primary serving cell (PCELL). The UE also performs radio link monitoring over a secondary serving cell (SCELL). The SCELL belongs to a CC group of one or more CCs and used as a reference cell for the CC group. When SCELL performance is below pre-defined criteria the UE and the eNB apply certain actions over the SCELL. The proposed SCELL RLM/RLF handling prevents spurious and uncontrollable uplink SCELL transmission and interference to other UEs.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
No | Family Member | |||
| 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | Yes | Basis Patent | ||||
Specification Information
Specification Information
Technologies
Family Information
| All Granted Patents In Patent Family : | ---- |
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||
| US2012281548A1 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Basis Patent | |||
| US2012281548A1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | Yes | Basis Patent | ||||
| US2012281548A1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| US9042315B2 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Basis Patent | |||
| US9042315B2 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | Yes | Basis Patent | ||||
| US9042315B2 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| CN102870450A | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| CN102870450A | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| CN102870450B | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| CN102870450B | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| EP2596659A1 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| EP2596659A1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| EP2596659A4 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| EP2596659A4 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| EP2596659B1 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| EP2596659B1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| JP2014514821A | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| JP2014514821A | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| JP2015216681A | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
No | Family Member | |||
| JP2015216681A | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| JP6236415B2 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
No | Family Member | |||
| JP6236415B2 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| TW201246955A | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| TW201246955A | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| TWI472238B | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| TWI472238B | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| US2015256300A1 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
No | Family Member | |||
| US2015256300A1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | Yes | Basis Patent | ||||
| US2015256300A1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| WO2012149898A1 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
Yes | Family Member | |||
| WO2012149898A1 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| ES2657013T3 | 4G | 13/12/2016 | ISLD-201703-001 | MEDIATEK INC |
S1
S2
S3
S4
|
No | Family Member | |||
| ES2657013T3 | 5G | 02/09/2020 | ISLD-202009-002 | MEDIATEK INC | No | Family Member | ||||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
S1
|
----- | ----- | ----- | ----- | |||
Technologies
Radio Link Monitoring
Product
Use Cases
Wireless communication
Services
Claim
1. A method, comprising:
establishing a radio resource control (RRC) connection by a user equipment (UE) with a base station, where the UE applies carrier aggregation for multiple component carriers (CCs);
performing radio link monitoring by the UE over a primary serving cell (PCELL), wherein the PCELL belongs to a first CC group of one or more CCs;
selecting a secondary serving cell (SCELL) as a reference cell, wherein the SCELL belongs to a second CC group of one or more CCs;
performing radio link monitoring by the UE over the selected reference SCELL; and
applying an action when the SCELL performance is below a pre-defined criteria, wherein the action is applied over the reference SCELL.
2. The method of claim 1, wherein the reference SCELL is used as a pathloss reference and/or a timing advance reference.
3. The method of claim 1, wherein the reference SCELL is used to perform a random access channel (RACH) procedure.
4. The method of claim 1, wherein the radio link monitoring involves downlink monitoring based on QIN/QOUT measurements.
5. The method of claim 4, wherein the radio link monitoring involves radio link failure detection based on detecting a physical layer problem of the RRC connection based on an N310/N311/T310 mechanism.
6. The method of claim 1, wherein the radio link monitoring involves uplink-monitoring including radio link failure detection based on random access channel (RACH) failure detection and/or a maximum number of radio link control (RLC) retransmissions.
7. The method of claim 1, wherein the action involves the UE notifying the base station at least one of a detected radio link failure of the reference SCELL, a deactivation of the reference SCELL, availability of problem event information gathered for the reference SCELL, and problem event information gathered for the reference SCELL.
8. The method of claim 1, wherein the action involves the UE autonomously stopping uplink transmission over the reference SCELL.
9. A user equipment (UE), comprising:
a radio frequency (RF) transceiver that exchanges radio signals with a base station in a wireless network;
a radio resource control (RRC) connection management module that establishes an RRC connection with the base station, where the RRC connection is established over multiple component carriers (CCs);
a radio link monitoring module that performs radio link monitoring over a primary serving cell (PCELL) belonging to a first CC group of one or more CCs and over a selected reference secondary serving cell (SCELL), wherein the reference SCELL belongs to a second CC group of one or more CCs; and
an SCELL configuration module that applies an action when the reference SCELL performance is below a pre-defined criteria, wherein the action is applied over the reference SCELL.
10. The UE of claim 9, wherein the reference SCELL is used as a pathloss reference and/or a timing advance reference.
11. The UE of claim 9, wherein the reference SCELL is used to perform a random access channel (RACH) procedure.
12. The UE of claim 9, wherein the radio link monitoring involves downlink monitoring based on QIN/QOUT measurements.
13. The UE of claim 12, wherein the radio link monitoring involves radio link failure detection based on detecting a physical layer problem of the RRC connection based on a N310/N311/T310 mechanism.
14. The UE of claim 9, wherein the radio link monitoring involves uplink-monitoring including radio link failure detection based on random access channel (RACH) failure detection and/or a maximum number of radio link control (RLC) retransmissions.
15. The UE of claim 9, wherein the action involves the UE notifying the base station at least one of a detected radio link failure of the reference SCELL, deactivation of the reference SCELL, availability of problem event information gathered for the reference SCELL, and the problem event information gathered for the reference SCELL.
16. The UE of claim 9, wherein the action involves the UE autonomously stopping uplink transmission over the reference SCELL.
17. A base station, comprising:
a radio resource control (RRC) connection management module that establishes an RRC connection with a user equipment (UE), where the RRC connection is established over multiple component carriers (CCs);
a CC grouping module that configures one or more CCs as a CC group for the UE, wherein the group includes one secondary serving cell (SCELL) as a reference cell;
a radio frequency (RF) transceiver that receives a notification from the UE, wherein the notification contains at least one of a detected radio link failure of the reference SCELL, a deactivation of the reference SCELL, availability of problem event information gathered for the reference SCELL, and the problem event information gathered for the reference SCELL; and
an SCELL configuration module that applies an action based on the received notification, wherein the action is applied over the reference SCELL.
18. The base station of claim 17, wherein the reference SCELL is used as a pathloss reference and/or a timing advance reference for the CC group.
19. The base station of claim 17, wherein the reference SCELL is used to perform a random access channel (RACH) procedure.
20. The base station of claim 17, wherein the action involves deactivating or de-configuring the reference SCELL.
21. The base station of claim 17, wherein the action involves requesting and retrieving gathered problem event information from the UE.
Associated Portfolios
Licensor Claim Chart
 Claim Chart |
 Technology |
 Creation Date |
 Download |
|---|---|---|---|
|
Claim charts will soon be available!
|
|||
To view claim charts you must become a Gold or Platinum Member.
Upgrade your subscriptionYou have reached the maximum number of patents which can be associated to your account per your subscription. If you wish to associate more patents
Please upgrade your subscription.Note:
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.