Device and method of aggregating LTE System and WLAN
First Claim
1. A communication device for handling long-term evolution (LTE)-wireless local area network (WLAN) aggregation, comprising:
- a non-transitory memory; and
a processing circuit, coupled to the non-transitory memory, wherein the non-transitory memory stores, and the processing circuit is configured to execute instructions of;
connecting to a base station (BS) via LTE communication;
detecting a radio link failure on the LTE communication;
stopping transmission/reception of at least one first LTE protocol data unit (PDU) via a WLAN in response to the radio link failure, if the WLAN is configured by the BS for the transmission/reception of the at least one first LTE PDU with the BS via the WLAN;
keeping transmission/reception of at least one non-LTE PDU via the WLAN in response to the radio link failure, if the WLAN is not configured by the BS for the transmission/reception of the at least one first LTE PDU with the BS via the WLAN;
transmitting a message indicating support of LTE-WLAN aggregation to the BS via the LTE communication;
receiving a first configuration message configuring the transmission/reception of the at least one first LTE PDU via the WLAN and a WLAN configuration;
communicating the at least one first LTE PDU from the BS via the WLAN according to the WLAN configuration; and
transmitting a first status report indicating which of the at least one first LTE PDU is received or not to the BS via the LTE communication, when the communication device detects a disconnection of the WLAN.
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Abstract
A communication device for handling long-term evolution (LTE)-wireless local area network (WLAN) aggregation is configured to execute instructions comprising connecting to a base station (BS) via LTE communication; detecting a radio link failure on the LTE communication; stopping transmission/reception of at least one first LTE protocol data unit (PDU) via a WLAN in response to the radio link failure, if the WLAN is configured by the BS for the transmission/reception of the at least one first LTE PDU with the BS via the WLAN; and keeping transmission/reception of at least one non-LTE PDU via the WLAN in response to the radio link failure, if the WLAN is not configured by the BS for the transmission/reception of the at least one first LTE PDU with the BS via the WLAN.
10 Citations
16 Claims
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1. A communication device for handling long-term evolution (LTE)-wireless local area network (WLAN) aggregation, comprising:
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a non-transitory memory; and a processing circuit, coupled to the non-transitory memory, wherein the non-transitory memory stores, and the processing circuit is configured to execute instructions of; connecting to a base station (BS) via LTE communication; detecting a radio link failure on the LTE communication; stopping transmission/reception of at least one first LTE protocol data unit (PDU) via a WLAN in response to the radio link failure, if the WLAN is configured by the BS for the transmission/reception of the at least one first LTE PDU with the BS via the WLAN; keeping transmission/reception of at least one non-LTE PDU via the WLAN in response to the radio link failure, if the WLAN is not configured by the BS for the transmission/reception of the at least one first LTE PDU with the BS via the WLAN; transmitting a message indicating support of LTE-WLAN aggregation to the BS via the LTE communication; receiving a first configuration message configuring the transmission/reception of the at least one first LTE PDU via the WLAN and a WLAN configuration; communicating the at least one first LTE PDU from the BS via the WLAN according to the WLAN configuration; and transmitting a first status report indicating which of the at least one first LTE PDU is received or not to the BS via the LTE communication, when the communication device detects a disconnection of the WLAN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication device for handling long-term evolution (LTE)-wireless local area network (WLAN) aggregation, comprising:
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a non-transitory memory; and a processing circuit, coupled to the non-transitory memory, wherein the non-transitory memory stores, and the processing circuit is configured to execute instructions of; entering a connected mode with a LTE network; receiving a first radio resource control (RRC) message configuring a communication of at least one LTE protocol data unit (PDU) with a WLAN from the LTE network in the connected mode; connecting to the WLAN; performing a communication of at least one WLAN media access control (MAC) PDU comprising the at least one LTE PDU with the WLAN; performing a RRC connection reestablishment or a handover with the LTE network in the connected mode; suspending the communication of the at least one LTE PDU with the WLAN in response to the RRC connection reestablishment or the handover; deriving a first pairwise master key (PMK) according to the RRC message; deriving a first encryption key according to the first PMK; encrypting a first WLAN MAC service data unit (SDU) which comprises a first LTE PDU using the first encryption key into a first encrypted WLAN MAC SDU, and transmitting a first WLAN MAC PDU comprising the first encrypted WLAN MAC SDU to the WLAN; and
/orreceiving a second WLAN MAC PDU comprising a second encrypted WLAN MAC SDU which comprises a second LTE PDU from the WLAN, and decrypting the second encrypted WLAN MAC SDU using the first encryption key; deriving a second PMK according to a second RRC message of the handover or the first RRC message after the RRC connection reestablishment; deriving a second encryption key according to the second PMK; encrypting a third WLAN MAC SDU into a third encrypted WLAN MAC SDU which comprises a third LTE PDU according to the second encryption key, and transmitting a third WLAN MAC PDU which comprises the third encrypted WLAN MAC SDU to the WLAN, after resuming the communication of the at least one LTE PDU with the WLAN; and receiving a fourth WLAN MAC PDU comprising a fourth encrypted WLAN MAC SDU which comprises a fourth LTE PDU from the WLAN, and decrypting the fourth encrypted WLAN MAC SDU according to the second encryption key, after resuming the communication of the at least one LTE PDU with the WLAN. - View Dependent Claims (11, 12, 13)
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14. A communication device for handling long-term evolution (LTE)-wireless local area network (WLAN) aggregation, comprising:
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a non-transitory memory; and a processing circuit, coupled to the non-transitory memory, wherein the non-transitory memory stores, and the processing circuit is configured to execute instructions of; establishing a LTE connection to a LTE network; receiving a radio resource control (RRC) message configuring a communication of at least one LTE protocol data unit (PDU) with a WLAN via the LTE connection from the LTE network; establishing a WLAN connection to the WLAN; generating a first encryption key in response to a first handshake procedure with the WLAN; detecting a disconnection of the WLAN connection; generating a first LTE PDU which comprises a first LTE service data unit (SDU) according to a first LTE PDU format; encrypting a first WLAN media access control (MAC) SDU which comprises the first LTE PDU according to the first encryption key, to obtain an encrypted first WLAN MAC SDU; failing to transmit a first WLAN MAC PDU which comprises the encrypted first WLAN MAC SDU to the WLAN via the WLAN connection due to the disconnection of the WLAN connection; and transmitting a second LTE PDU which comprises the first LTE SDU via the LTE connection according to a second LTE PDU format, wherein the first LTE PDU format is different from the second LTE PDU format. - View Dependent Claims (15, 16)
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Specification