Abstract
The present invention pertains to a group key and relates to a group key management method of a key distribution center comprising the steps of: receiving a key request from a mobile device; generating a private key for the mobile device when leaving time information is included in the key request; generating a public key and a verification key for the mobile device; transmitting at least one key including the generated key to the mobile device; verifying whether or not a counterpart belongs to the same group as a leaving time of the counterpart a public key of the counterpart and a verification key of the counterpart; comparing the versions of group keys when the counterpart belongs to the same group and allowing a device having a group key of a latest version to encrypt the group key of the latest version with a session key and to transmit the encrypted group key to a counterpart device; and allowing the counterpart device which has received the group key to decrypt the group key and to perform an update. The use of a group key enables a communication cost required for data transmission to be reduced and when a group key is updated even mobile devices which have not received the group key from a base station can later receive the group key from the base station or another mobile device which belongs to the same group.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
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 | |||||||
| US2014149745A1 | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | Yes | Basis Patent | ||||
| US2014149745A1 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
Yes | Basis Patent | |||
| US9326136B2 | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | Yes | Basis Patent | ||||
| US9326136B2 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
Yes | Basis Patent | |||
| CN103918218A | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| CN103918218A | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| CN103918218B | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| CN103918218B | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| EP2731294A2 | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| EP2731294A2 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| EP2731294A4 | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| EP2731294A4 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| KR101808188B1 | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| KR101808188B1 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| KR20130004841A | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| KR20130004841A | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| WO2013005989A3 | 4G,3G,2G | 29/10/2018 | ISLD-201810-074 | SAMSUNG | No | Family Member | ||||
| WO2013005989A3 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
S1
S2
|
No | Family Member | |||
| EP2731294B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| 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
Session Management
Product
Use Cases
Services
Claim
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.