METHODS AND APPARATUSES FOR SMALL DATA TRANSMISSIONS
There is provided methods and apparatuses for small data transmissions in telecommunication network. Specifically, there is provided effective and substantially optimized methods and apparatuses for transmission of downlink data after uplink data transmissions in order that the complete small data transmission process is substantially optimized when used in conjunction with small uplink data transmission optimization techniques.
1 . A method for small data transmission between a user equipment (UE) and a network node, comprising:
transmitting, by the UE, uplink data to the network node; and
receiving, by the UE, first downlink control information (DCI), wherein the first DCI includes an acknowledgement of the uplink data transmission and a DCI identifier (ID).
2 . The method according to claim 1 , wherein the DCI ID is a preconfigured radio network temporary identifier (PC-RNTI).
3 . The method according to claim 1 , wherein the uplink data transmission is grant free.
4 . The method according to claim 1 , further comprising:
receiving, by the UE, a second DCI wherein the second DCI includes a downlink grant and the DCI ID; and
receiving, by the UE, downlink data.
5 . The method according to claim 1 , further comprising:
upon receipt of the acknowledgement, changing, by the UE, to connected mode.
6 . The method according to claim 4 , wherein the UE indicates an expectation of the downlink data during configuration of uplink resources.
7 . The method according to claim 1 , wherein the UE indicates a non-expectation of downlink data packets during transmission of the uplink data to the network node.
8 . The method according to claim 2 , wherein the PC-RNTI is assigned to the UE for one or more of dedicated time, frequency and signature resource.
9 . The method according to claim 2 , wherein the UE shares the PC-RNTI with other UEs.
10 . A user equipment (UE) for small data transmission, the UE comprising:
a network interface for receiving and transmitting data;
a processor; and
a non-transient memory for storing instructions that when executed by the processor cause the UE to:
transmit uplink data to the network node; and
receive first downlink control information (DCI), wherein the first DCI includes an acknowledgement of the uplink data transmission and an DCI identifier (ID).
11 . The UE according to claim 10 , wherein the DCI ID is a preconfigured radio network temporary identifier (PC-RNTI).
12 . The UE according to claim 10 , wherein the uplink data transmission is grant free.
13 . The UE according to claim 10 , wherein the instructions when executed by the processor further cause the UE to:
receive a second DCI wherein the second DCI includes a downlink grant and the DCI ID; and
receive downlink data.
14 . The UE according to claim 10 , wherein the instructions when executed by the processor further cause the UE to:
upon receipt of the acknowledgement, change to connected mode.
15 . The UE according to claim 13 , wherein the UE indicates an expectation of the downlink data during configuration of uplink resources.
16 . The UE according to claim 11 , wherein the PC-RNTI is assigned to the UE for one or more of dedicated time, frequency and signature resource.
17 . The UE according to claim 11 , wherein the UE shares the PC-RNTI with other UEs.
18 . A method for small data transmission between a user equipment (UE) and a network node, comprising:
receiving, by the network node, uplink data from the UE; and
transmitting, by the network node, first downlink control information (DCI), wherein the first DCI includes an acknowledgement of the uplink data transmission and a DCI identifier (ID).
19 . The method according to claim 18 , wherein the DCI ID is a preconfigured radio network temporary identifier (PC-RNTI).
20 . The method according to claim 18 , wherein the uplink data transmission is grant free.
21 . The method according to claim 18 , further comprising:
transmitting, by the network node, a second DCI wherein the second DCI includes a downlink grant and the DCI ID; and
transmitting, by the network node, downlink data.
22 . A network node for small data transmission, the network node comprising:
a network interface for receiving and transmitting data;
a processor; and
a non-transient memory for storing instructions that when executed by the processor cause the network node to:
receive uplink data from the UE; and
transmit first downlink control information (DCI), wherein the first DCI includes an acknowledgement of the uplink data transmission and a DCI identifier (ID).
23 . The network node according to claim 22 , wherein the DCI ID is a preconfigured radio network temporary identifier (PC-RNTI).
24 . The network node according to claim 22 , wherein the uplink data transmission is grant free.
25 . The network node according to claim 22 , wherein the instructions when executed by the processor further cause the network node to:
transmit a second DCI wherein the second DCI includes a downlink grant and the DCI ID; and
transmit downlink data.
26 . A method of reconfiguring a preconfigured radio network temporary identifier (PC-RNTI), comprising:
transmitting, by a network node, a downlink control information (DCI) to a user equipment (UE), wherein the DCI includes a downlink grant and the PC-RNTI; and
transmitting, by the network node, a radio resource control (RRC) message with a cell radio network temporary identifier (C-RNTI) to the UE.
27 . The method according to claim 26 , further comprising receiving, by the network node, uplink data, wherein the uplink data is configured as a short sequence, the short sequence indicative that data transmission by the UE is unrequired.
28 . The method according to claim 27 , wherein the short sequence is a sounding reference signal or a demodulation reference signal.
29 . A network node for reconfiguring a preconfigured radio network temporary identifier (PC-RNTI), the network node comprising:
a network interface for receiving and transmitting data;
a processor; and
a non-transient memory for storing instructions that when executed by the processor cause the network node to:
transmit a downlink control information (DCI) to a UE, wherein the DCI includes a downlink grant and the PC-RNTI; and
transmit a radio resource control (RRC) message with a cell radio network temporary identifier (C-RNTI) to the UE.
30 . The network node according to claim 29 , wherein the instructions when executed by the processor further cause the network node to receive uplink data, wherein the uplink data is configured as a short sequence, the short sequence indicative that data transmission by the UE is unrequired.
31 . The network node according to claim 30 , wherein the short sequence is a sounding reference signal or a demodulation reference signal.