Communication method and device for unauthorized spectrum
A signaling and frequency band technology, applied in the communication field for unlicensed spectrum, which can solve problems such as scheduling restrictions
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Embodiment 1
[0091] Embodiment 1 illustrates the flow chart of transmitting downlink data on the unlicensed spectrum, as shown in the attached figure 1 shown. attached figure 1 In, the base station N1 is the serving base station of the UE U2, and steps S14, S15, S24, and S25 are optional steps.
[0092] for base station N1 , in step S11, send high-level signaling to indicate logic information and N groups of configuration information; in step S12, send the first signaling to indicate L groups of TDD frame structures of a given frame, wherein the TDD at the corresponding position of the reconstruction index The frame structure is the second TDD frame structure; in step S13, resources for downlink transmission are selected from the first physical resources.
[0093] for UE U2 , in step S21, receive high-level signaling to obtain logical information and N groups of configuration information; in step S22, receive the first signaling to obtain L groups of TDD frame structures of a given f...
Embodiment 2
[0112] Embodiment 2 illustrates a schematic diagram of scheduling based on eIMTA, as attached figure 2 shown. attached figure 2 , physical carriers CC1-3 are deployed in unlicensed spectrum. The small squares marked with backslashes represent subframes scheduled for uplink transmission, and the small squares marked with slashes represent subframes scheduled for downlink transmission.
[0113] For the base station, first send high-level signaling to indicate logic information and 3 sets of configuration information; then send the first signaling to indicate no more than 5 sets of TDD frame structures for a given frame, wherein the TDD frame structure at the position corresponding to the reconstruction index is the first Two TDD frame structures; then select resources for downlink transmission in the first physical resources; then send the second signaling to indicate the following information:
[0114] - a virtual index equal to the carrier logical index
[0115] -schedul...
Embodiment 3
[0127] Embodiment 3 illustrates a schematic diagram of the second signaling, as shown in the attached image 3 shown. attached image 3 In the method, the second signaling includes a virtual index, a physical index and scheduling information, wherein the physical index is optional.
[0128] The virtual index in the second signaling includes 3 bits, and the value ranges from 1 to 7. The bit number and value range of the physical index are configurable or predetermined. As a sub-embodiment of Embodiment 3, the number of bits of the physical index is not less than log 2 N, where N is the number of groups of configuration information currently configured by the UE receiving the second signaling in the unlicensed spectrum.
[0129] As a sub-embodiment of Embodiment 3, the scheduling information includes all or part of the information in DCI format 2C. As yet another sub-embodiment of Embodiment 3, the scheduling information includes all or part of the information in DCI Format...
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