Method of dynamic PDCP status report polling for LTE-WLAN aggregation
First Claim
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1. A method comprising:
- receiving a radio resource control (RRC) signaling message including an LTE-WLAN aggregation (LWA) configuration from a base station by a user equipment (UE) in a wireless network, wherein the UE is connecting to an LWA-enabled access point (AP) as indicated in the LWA configuration;
receiving a polling configuration for packet data convergence protocol (PDCP) status from the base station;
exchanging with the base station a PDCP protocol data unit (PDU) containing a polling bit indicating PDCP status polling is triggered, wherein the UE receives the polling bit for downlink LWA, wherein the PDCP PDU is a PDCP data PDU piggybacked with the polling bit, and wherein the polling bit is one of the reserved bits of an LTE 18-bit PDCP data PDU of first Octet; and
exchanging with the base station a PDCP status report based on the polling configuration, wherein the PDCP status report comprises at least an HRW (Highest Received SN on WLAN).
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Abstract
To facilitate LWA PDCP setting/scheduling, a method of providing dynamic PDCP status report polling is proposed. To enhance scheduling efficiency, the transmitter (can be eNB from DL or UE for UL) can dynamically poll PDCP status report for LWA behavior. The polling can be done by a standalone PDCP control PDU or use reserved bit in PDCP data PDU. The triggering condition for PDCP status polling includes: PDCP without poll time exceeds a first threshold, PDCP without poll bytes exceeds a second threshold, PDCP without poll PDU numbers exceeds a third threshold, a data buffer is empty, and when LWA is deactivated.
25 Citations
11 Claims
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1. A method comprising:
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receiving a radio resource control (RRC) signaling message including an LTE-WLAN aggregation (LWA) configuration from a base station by a user equipment (UE) in a wireless network, wherein the UE is connecting to an LWA-enabled access point (AP) as indicated in the LWA configuration; receiving a polling configuration for packet data convergence protocol (PDCP) status from the base station; exchanging with the base station a PDCP protocol data unit (PDU) containing a polling bit indicating PDCP status polling is triggered, wherein the UE receives the polling bit for downlink LWA, wherein the PDCP PDU is a PDCP data PDU piggybacked with the polling bit, and wherein the polling bit is one of the reserved bits of an LTE 18-bit PDCP data PDU of first Octet; and exchanging with the base station a PDCP status report based on the polling configuration, wherein the PDCP status report comprises at least an HRW (Highest Received SN on WLAN). - View Dependent Claims (2, 3, 4)
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5. A user equipment (UE) comprising:
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a radio frequency (RF) receiver that receives a radio resource control (RRC) signaling message including an LTE-WLAN aggregation (LWA) configuration in a wireless network, wherein the UE is connecting to an LWA-enabled access point (AP) as indicated in the LWA configuration, wherein the RF receiver also receives a polling configuration for packet data convergence protocol (PDCP) status from the base station; and an RF transceiver that exchanges with the base station a PDCP protocol data unit (PDU) containing a polling bit indicating PDCP status polling is triggered, wherein the PDCP PDU is a PDCP data PDU piggybacked with the polling bit, wherein the polling bit is one of the reserved bits of an LTE 18-bit PDCP data PDU of first Octet, wherein the RF transceiver also exchanges with the base station a PDCP status report based on the polling configuration, wherein the UE receives the polling bit for downlink LWA, and wherein the PDCP status report comprises at least an HRW (Highest Received SN on WLAN). - View Dependent Claims (6, 7, 8)
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9. A method, comprising:
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transmitting a radio resource control (RRC) signaling message including an LTE-WLAN aggregation (LWA) configuration from a base station to a user equipment (UE) in a wireless network, wherein the UE is connecting to an LWA-enabled access point (AP) as indicated in the LWA configuration; transmitting a polling configuration for packet data convergence protocol (PDCP) status from the base station; exchanging with the UE a PDCP protocol data unit (PDU) containing a polling bit indicating PDCP status polling is triggered, wherein the base station transmits the polling bit for downlink LWA, wherein the PDCP PDU is a PDCP data PDU piggybacked with the polling bit, and wherein the polling bit is one of the reserved bits of an LTE 18-bit PDCP data PDU of first Octet; and exchanging with the UE a PDCP status report based on the polling configuration, wherein the PDCP status report comprises at least an HRW (Highest Received SN on WLAN). - View Dependent Claims (10, 11)
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Specification