Method and device for reducing security risk in communication
A communication system, a UE (User Equipment), a communication method and a computer readable medium may be provided. The communication system ( 100 ) includes: a first UE (User Equipment) ( 110 ) including a first controller and a first transceiver, wherein the first controller is configured to control the transceiver to send a message including L2 ID (Layer 2 Identity) and verification information; and a second UE ( 120 ) including a second controller and a second transceiver, wherein the second controller is configured: to control the transceiver to receive the message from the first UE ( 110 ); and to determine whether to accept the L2 ID or not using the verification information.
1. A User Equipment (UE) comprising:
a controller; and
a transceiver,
wherein the controller is configured to control the transceiver to:
in a link identifier (ID) update procedure over an interface between the UE and another UE,
send, to the another UE, an ID update request message comprising:
a new Layer 2 Identifier (L2 ID);
new security information; and
a sequence number; and
increment the sequence number for each sending of the ID update request message.
2. A communication method of a User Equipment (UE), the communication method comprising:
in a link identifier (ID) update procedure over an interface between the UE and another UE,
sending, to the another UE, an ID update request message comprising:
a new Layer 2 Identifier (L2 ID);
new security information; and
a sequence number; and
incrementing the sequence number for each sending of the ID update request message.
3. The UE according to claim 1 , wherein the controller is further configured to control the transceiver to:
receive a response message from the another UE if the another UE determines that ID update request message related information is valid.
4. The communication method according to claim 2 , the communication method further comprising:
receiving a response message from the another UE if the another UE determines that ID update request message related information is valid.
5. The UE according to claim 1 , wherein the controller is further configured to control the transceiver to:
retransmit, to the another UE, the ID update request message using a timer in the UE.
6. The communication method according to claim 2 , the communication method further comprising:
retransmitting, to the another UE, the ID update request message using a timer in the UE.
7. The UE according to claim 1 , wherein the controller is further configured to control the transceiver to:
generate the new L2 ID.
8. The UE according to claim 1 , wherein the controller is further configured to control the transceiver to:
assign the new security information.
9. The communication method according to claim 2 , the communication method further comprising:
generating the new L2 ID.
10. The communication method according to claim 2 , the communication method further comprising:
assigning the new security information.