TRANSMISSION METHOD BASED ON PHYSICAL DOWNLINK CHANNEL, USER EQUIPMENT, AND BASE STATION
Transmission methods, user equipment, and base stations based on a physical downlink channel are provided, the method including the steps of receiving control information carried by the physical downlink channel, the control information including a time interval indication, and determining information of uplink resource associated with a user equipment (UE) or a starting subframe of the scheduling window based on the time interval indication and an ending subframe of the physical downlink channel. The present invention provides a time domain resource allocation method based on a scheduling window to facilitate the flexible allocation of time domain resources for a plurality of UEs.
1 . A transmission method based on a physical downlink channel, the method comprising:
receiving control information carried by the physical downlink channel, the control information including a time interval indication; and
determining information of uplink resource associated with a user equipment or a starting subframe of a scheduling window based on the time interval indication and an ending subframe of the physical downlink channel.
2 . The method of claim 1 , wherein the control information is Random Access Response (RAR) information and the physical downlink channel is a physical downlink shared channel (PDSCH) carrying the RAR information; and a starting subframe for transmitting a message 3 (MSG3) is determined based on the time interval indication and an ending subframe of the PDSCH.
3 . The method of claim 1 , wherein the control information is downlink control information for scheduling a physical transport block, the physical downlink channel is a corresponding physical downlink control channel (PDCCH) carrying the downlink control information, and the downlink control information contains a resource allocation (RA) field indicating a set of time domain resource units within the scheduling window; and receiving or transmitting the physical transport block on the set of time domain resource units indicated by the RA field.
4 . The method of claim 3 , wherein the starting subframe of the scheduling window is determined by the ending subframe of the corresponding physical downlink control channel carrying the downlink control information and the time interval indication, or by an ending subframe of the physical downlink control channel search space containing the downlink control information and the time interval indication; or the starting subframe of the scheduling window is determined by an ending subframe including a physical downlink control area of the downlink control information and the time interval indication.
5 . The method of claim 3 , wherein the time domain resource unit is a subframe or a plurality of subframes; the time domain resource unit is a time slot or a plurality of time slots.
6 . The method of claim 3 , wherein the set of time domain resource units indicated by the RA field are continuous.
7 . The method of claim 3 , wherein the scheduling window includes a subframe which is unavailable for resource allocation or the scheduling window excludes the subframe which is unavailable for resource allocation; and the subframe which is unavailable for resource allocation is indicated in the system information block(SIB).
8 . The method of claim 3 , wherein the starting subframe of the scheduling window is determined by a subframe number, a frame number, and a number of subframes included in the scheduling window.
9 . The method of claim 8 , wherein a plurality of scheduling windows included in a given time are numbered and the numbering of the scheduling window is used in the initialization of a scrambling sequence generator used for physical data channel transmission.
10 . The method of claim 9 , wherein each downlink time domain scheduling window containsthe physical downlink control area and a physical downlink data area.
11 . The method of claim 10 , wherein the physical downlink control channel and a set of time domain resource units scheduled thereby belong to the same or a different scheduling window.
12 . The method of claim 3 , wherein the number of subframes contained in the downlink scheduling window is different from the number of subframes contained in the uplink scheduling window; or a duration of the downlink scheduling window is different from a duration of the uplink scheduling window.
13 . A user equipment based on a physical downlink channel, comprising:
a wireless transceiver configured to perform wireless transmission with at least one base station;
a controller connected to the wireless transceiver, the controller is configured to receive control information carried by a physical downlink channel from the at least one base station, the control information including a time interval indication; and
wherein the controller determines information of uplink resource associated with the user equipment or a starting subframe of a scheduling window based on the time interval indication and an ending subframe of the physical downlink channel.
14 . The user equipment of claim 13 , wherein the control information is Random Access Response (RAR) information and the physical downlink channel is a physical downlink shared channel(PDSCH) carrying the RAR information; and the controller further determines a starting subframe for transmitting a message 3 (MSG3) based on the time interval indication and an ending subframe of the PDSCH.
15 . A base station based on a physical downlink channel, comprising:
a wireless transceiver configured to perform wireless transmission with at least one user equipment; and
a controller connected to the wireless transceiver, the controller is arranged in control information carried by the physical downlink channel to indicate a time interval indication such that the at least one user equipment determines information of uplink resource associated with the at least one user equipment or a starting subframe of the scheduling window based on the time interval indication in the control information and an ending subframe of the physical downlink channel.
16 . The base station of claim 15 , wherein the control information is random access response (RAR) information and the physical downlink channel is a physical downlink shared channel(PDSCH) carrying the RAR information; and a starting subframe of a message 3 (MSG3) received by the wireless transceiver is determined by the time interval indication and an ending subframe of the PDSCH.