Time Domain Transmission Scheduling

Abstract

Methods, systems, and devices related to time domain transmission scheduling for a user device capable of operating in dual connectivity are described. In one exemplary aspect, a method for wireless communication is described. The method includes receiving information indicating a time domain transmission mode at a wireless device, determining a periodic transmission mode based on the time domain transmission mode and an offset of the wireless device, and transmitting data to a communication node according to the periodic transmission mode.

Description

Technical Field

[0001] This patent document generally relates to digital wireless communications. Background Art

[0002] Mobile communication technology is pushing the world towards an increasingly connected and networked society. The rapid growth of mobile communications and technological advances have placed higher demands on capacity and connectivity. Other aspects, such as energy consumption, equipment cost, spectrum efficiency and latency are also important to meet the needs of various communication scenarios. A wide range of technologies are being discussed, including new ways to provide higher quality of service. Summary of the invention

[0003] This document discloses methods, systems, and devices related to digital wireless communications, and more particularly, discloses techniques related to time domain transmission scheduling of a user equipment (UE).

[0004] In one exemplary aspect, a method for wireless communication is disclosed. The method includes receiving information indicating a time domain transmission pattern at a wireless device; determining a periodic transmission pattern based on the time domain transmission pattern and an offset; and transmitting data to a communication node according to the periodic transmission pattern.

[0005] In some embodiments, the periodic transmission pattern is a semi-static transmission pattern.In some embodiments, the offset is a subframe offset, a HARQ offset or a time offset.

[0006] In some embodiments, the time domain position of the initial semi-static grant of the semi-static transmission pattern is determined based on the time domain transmission pattern and the offset. In some implementations, the information indicating the time domain transmission pattern is located in a radio resource control (RRC) message.

[0007] In some embodiments, the method further comprises receiving the offset in a radio resource control (RRC) message at the wireless device.Alternatively, the method comprises receiving a message comprising the offset at the wireless device via a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH).

[0008] In another exemplary aspect, a method for wireless communication is disclosed, including transmitting information indicating a time domain transmission mode to a wireless device, and receiving data from the wireless device according to a periodic transmission mode, wherein the periodic transmission mode is determined based on the transmission mode and an offset.

[0009] In some embodiments, the periodic transmission pattern is a semi-static transmission pattern. In some embodiments, the offset of the wireless device is a subframe offset, a HARQ offset, or a time offset.

[0010] In some embodiments, the time domain position of the initial semi-static grant of the semi-static transmission pattern is determined based on the time domain transmission pattern and the offset. In some implementations, the information indicating the time domain transmission pattern is located in a radio resource control (RRC) message.

[0011] In some embodiments, the method further comprises transmitting the offset of the wireless device to the wireless device in a radio resource control (RRC) message.Alternatively, the method may comprise transmitting a message comprising the offset to the wireless device via a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH).

[0012] In another exemplary aspect, a wireless communication device including a processor is disclosed. The processor is configured to implement the methods described herein.

[0013] In yet another exemplary aspect, the various techniques described herein may be embodied as processor-executable code and stored on a computer-readable program medium.

[0014] The details of one or more implementations are set forth in the accompanying appendices, drawings, and description below. Other features will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An exemplary schematic diagram showing a system architecture for dual connectivity (DC).

[0016] Figure 2 A schematic diagram showing intermodulation interference caused by Long Term Evolution - New Radio (LTE-NR) dual connectivity.

[0017] Figure 3 Schematic diagram showing harmonic interference caused by LTE-NR dual connectivity.

[0018] Figure 4 An example of a wireless communication system to which the technology according to one or more embodiments of the present technology can be applied is shown.

[0019] Figure 5 A block diagram representation of a portion of a wireless station.

[0020] Figure 6 is a flow chart representation of a method for wireless communication.

[0021] Figure 7 is a flowchart representation of another method for wireless communication. DETAILED DESCRIPTION

[0022] With the continuous development of wireless communication technology, a wider range of wireless communication services have emerged, which will greatly increase the bandwidth requirements in wireless communication systems. The development of a new generation of wireless communication—5G New Radio (NR) communication—is part of the ongoing mobile broadband evolution process to meet the requirements of growing network demand. NR will provide greater throughput to allow more users to connect simultaneously. Various aspects such as energy consumption, equipment cost, spectrum efficiency, and latency are also important to meet the needs of various communication scenarios. For example, the traditional frequency range of 300MHz to 3GHz may not meet the high throughput requirements of modern wireless communication systems. NR communication systems are capable of operating in frequency ranges above 3GHz, even up to 100GHz, thereby supporting high data rates with higher bandwidth.

[0023] As NR emerges in the wireless technology landscape, UEs will be able to support existing protocols, such as Long Term Evolution (LTE), while also supporting NR. Figure 1 An exemplary schematic diagram of a system architecture for dual connectivity (DC) is shown. DC refers to a system configuration or operating mode, such as a wireless device, in which a user equipment can operate using two logically independent communication connections to a network. A current base station (referred to as a first network element 101) coupled to a core network 103 can select a suitable base station for a UE 100 to be used as a second network element 102. For example, a suitable base station can be selected by comparing the channel quality of the base station with a predetermined threshold. Both base stations can provide radio resources to the UE 100 for data transmission on the user plane.

[0024] On the wired interface side (e.g., backhaul connection), the first network element 101 and the core network 103 may establish one or more interfaces 104 (e.g., control plane interface and user plane interface) for the UE 100. The second network element 102 and the core network 103 may establish one or more interfaces 105 (e.g., control plane interface and user plane interface) for the UE 100. An interface 106 (e.g., Xn interface) interconnects the two network elements.

[0025] On the radio interface side, the first and second network elements (101 and 102) may provide radio resources using the same or different radio access technologies (RATs). Each network element may independently schedule transmissions with the UE 100. A network element having a control plane connection and a user plane connection to a core network is referred to as a primary node (e.g., the first network element 101), and a network element having only a user plane connection to the core network is referred to as a secondary node (e.g., the second network element 102). In some cases, the UE 100 may be connected to more than two nodes, one of which acts as a primary node, and the remaining ones act as secondary nodes.

[0026] In some embodiments, the UE may support LTE-NR dual connectivity (DC). For example, one of the typical LTE-NR dual connectivity architectures may be established as follows: the primary node is an LTE RAN node (e.g., an eNB), and the secondary node is an NR RAN node (e.g., a gNB). Both the eNB and the gNB are connected to an evolved packet core (EPC) network (e.g., an LTE core network). Figure 1 The architecture shown can also be modified to include various primary / secondary node configurations. For example, the NR RAN node can be the primary node and the LTE RAN node can be the secondary node. In this case, the core network of the primary NR RAN node is the Next Generation Converged Network (NG-CN). In each dual connectivity scenario, one network (e.g., LTE network) is responsible for solving coverage issues, while the other network (e.g., NR network) is responsible for improving throughput.

[0027] Although the dual connectivity configuration can increase data rates, some interference may occur because each node operates in a different frequency range. Figure 2 A schematic diagram of intermodulation interference caused by LTE-NR dual connection is shown. The UE (not shown) is configured with two connections, LTE and NR. The LTE connection operates on a lower frequency band, while the NR connection operates on a higher frequency band. When the UE uses two connections to transmit data, intermodulation interference may exist due to LTE-NR coexistence. This interference comes from the intermodulation (IM) product between the LTE and NR uplink carriers, which may fall into the LTE downlink carrier. For example, when the UE uses the LTE B3 band (1800MHz) and the NR sub-6G band to transmit simultaneously, IM2 / 4 / 5 may fall into the LTE receiver operating in the LTEB1 band (2100MHz).

[0028] Figure 3 A schematic diagram of harmonic interference caused by LTE-NR dual connection is shown. The UE (not shown) is configured with two connections, LTE and NR. The LTE connection operates on a lower frequency band, while the NR connection operates on a higher frequency band. When the UE uses two connections to transmit data, harmonic interference may also exist due to LTE-NR coexistence. This interference comes from the interference of the harmonics of the lower-band LTE uplink signal to the NR downlink signal when the harmonics of the LTE uplink frequency fall into the NR downlink frequency. For example, when the UE uses the LTE B3 band (1800MHz) and the NR sub-6G band to transmit simultaneously, interference from the harmonic H2 of the LTE B3 band (1800MHz) may fall into the NR receiver.

[0029] In some embodiments, a time division multiplexing (TDM) transmission scheme may be used to reduce and / or minimize interference caused by dual connectivity. For example, the primary node and the secondary node may coordinate the TDM transmission mode of the UE so that if the primary node decides to reserve resources for uplink scheduling for the UE, the secondary node may avoid using the same resources for uplink / downlink scheduling for the same UE. Periodic transmission scheduling, such as semi-persistent scheduling (SPS), may be scheduled according to the TDM transmission scheme.

[0030] Semi-persistent scheduling (SPS) allows resources to be periodically allocated to specific UEs. However, with this periodic scheduling, conflicts may occur between new transmissions and retransmissions. For example, when the round trip time (RTT) is 10ms and the SPS interval is 20ms, a new transmission may conflict with the second retransmission. A subframe offset applicable to the UE can be introduced to solve this problem. For example, if the upper layer supports two interval resolutions, the UE will sequentially consider that the Nth grant of SPS occurs in the following subframes:

[0031] (10*SFN+subframe)=[(10*SFN 开始时间 +Subframe 开始时间 )+N*semi-static scheduling interval UL+subframe_offset*(N mod 2)] mod 10240.

[0032] Here, SFN 开始时间 and subframe 开始时间 is the system frame number and subframe when the configured uplink grant is initialized or reinitialized. Table 1 shows the subframe offset values ​​for different time division duplex (TDD) uplink (UL) / downlink (DL) configurations.

[0033] Table 1 - Example subframe offset values ​​for TDD UL / DL configurations

[0034]

[0035] The techniques described in this document can be used in a time division multiplexing (TDM) transmission scheme using an offset. The offset can be a UE-specific offset, such as a subframe offset, a HARQ offset, or a time offset. The offset can also be in milliseconds.

[0036] The TDM transmission scheme can be used for UEs operating in dual connectivity mode. For example, the master node and the secondary node first coordinate the TDM transmission mode. The master node notifies the UE of the TDM transmission mode together with the offset. When the UE performs uplink transmission using the TDM transmission mode with an offset, the interference caused by the dual connectivity can be minimized, and the possibility of conflict between new transmission and retransmission can be greatly reduced.

[0037] The TDM transmission scheme can also be used for UEs operating in other modes (e.g., single connection mode or multi-connection mode), as long as the corresponding base station adopts the TDM transmission mode for uplink transmission. The base station can notify the UE of the TDM transmission mode it uses together with the offset. When the UE performs uplink transmission using the TDM transmission mode with the offset, interference can be minimized and the possibility of collision between new transmissions and retransmissions can be greatly reduced.

[0038] The technical details are further described in the following embodiments. Although LTE and NR protocols are used as examples to enhance understanding, the described technology can also be embodied in other wireless systems, including systems configured to operate in single connection, dual connection or multi-connection mode.

[0039] Example 1

[0040] refer to Figure 2 , when the UE transmits data using dual connectivity, intermodulation interference may be introduced. In order to reduce and / or avoid such intermodulation interference, the UE may transmit uplink signals to the primary node and the secondary node at different times using the TDM transmission mode. The primary node (e.g., LTE node) and the secondary node (e.g., NR node) may coordinate the TDM transmission mode for the UE on an interface (e.g., X2 / Xn). If the primary node decides to reserve resources for uplink scheduling for the UE, the secondary node may avoid using the same resources for uplink / downlink scheduling for the same UE.

[0041] In some cases, acknowledgments for the physical uplink control channel (PUCCH) are restricted to some uplink subframes. When a node operates using a frequency division duplex (FDD) scheme, transmissions on the physical downlink shared channel (PDSCH) are also restricted to the corresponding downlink subframes based on the timing between the hybrid automatic repeat request (HARQ) feedback and the PDSCH. This restriction may result in throughput degradation in the downlink channel, so it is desirable to adopt the DL-reference UL / DL configuration defined in LTE-TDD-FDD carrier aggregation (CA) for the primary cell. For example, Table 2 shows multiple HARQ feedbacks from a downlink subframe that can be sent in an uplink subframe.

[0042] Table 2 - Multiple HARQ feedbacks in an uplink subframe

[0043]

[0044]

[0045] Moreover, each UE can use an offset to form a different transmission mode. In some embodiments, the offset can be UE-specific. For example, the offset can be a UE-specific HARQ offset. The start time of the semi-static grant can be configured in a reserved uplink subframe. Therefore, the position of the initial semi-static grant (as shown in Table 1) can be shifted by the offset. Table 3 shows an example of the initial semi-static grant after shifting using the offset. Using this shifted semi-static grant, the possibility of data collision can be greatly reduced.

[0046] Table 3 - Example initial semi-static grants after shifting by offset

[0047]

[0048]

[0049] In some embodiments, after the master node and the secondary node coordinate the TDM transmission mode, the master node notifies the UE of the TDM transmission scheme by indicating the UL / DL configuration and the offset. For example, the master node can send the UL / DL configuration via a radio resource control (RRC) message. The UE can obtain the offset via an RRC message or a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH). In some embodiments, the PDCCH or EPDCCH can carry an SPS activation command. In this particular example, the offset can be an integer value in the range of 0-9. The UE then performs uplink transmission based on the shifted semi-static grant.

[0050] Example 2

[0051] refer to Figure 3 , when the UE transmits data using dual connectivity, harmonic interference may be introduced. In order to reduce and / or avoid such harmonic interference, the UE may transmit uplink signals to the primary node and the secondary node at different times using the TDM transmission mode. The primary node (e.g., LTE node) and the secondary node (e.g., NR node) may coordinate the TDM transmission mode for the UE on an interface (e.g., X2 / Xn). If the primary node decides to reserve resources for uplink scheduling for the UE, the secondary node may avoid using the same resources for uplink scheduling for the same UE.

[0052] As discussed above, in some implementations, it is desirable to use UL / DL configuration to indicate the TDM transmission scheme. The master node uses the UL / DL configuration and the offset to notify the UE of the TDM transmission scheme. In some embodiments, the offset may be UE-specific, such as a UE-specific HARQ offset. The master node may send such information via a radio resource control (RRC) message. The UE may obtain the offset via an RRC message or a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH). In some embodiments, the PDCCH or EPDCCH may carry an SPS activation command. In this particular embodiment, the offset may be an integer value in the range of 0-9. The uplink SPS pattern may be shifted by the offset, such as shown in Table 3. The UE then performs uplink transmission based on the shifted semi-static grant.

[0053] Example 3

[0054] refer to Figure 2 , when the UE transmits data using dual connectivity, intermodulation interference may be introduced. In order to reduce and / or avoid such intermodulation interference, the UE may transmit uplink signals to the primary node and the secondary node at different times using the TDM transmission mode. The primary node (e.g., LTE node) and the secondary node (e.g., NR node) may coordinate the TDM transmission mode for the UE on an interface (e.g., X2 / Xn). If the primary node decides to reserve resources for uplink scheduling for the UE, the secondary node may avoid using the same resources for uplink scheduling for the same UE.

[0055] In this particular embodiment, the master node notifies the UE of the TDM transmission mode directly. In some embodiments, the offset may be UE-specific, such as a UE-specific time offset or a cell-level time offset. For example, the master node may include an indicator indicating the TDM transmission mode in an RRC message. The UE may obtain the offset via an RRC message or a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH). In some embodiments, the PDCCH or EPDCCH may carry an SPS activation command. In this particular embodiment, the offset range is 0 to 9. The uplink SPS pattern may be shifted by the UE-specific subframe offset, such as shown in Table 3. The UE then performs uplink transmission based on the shifted semi-static grant.

[0056] Example 4

[0057] refer to Figure 3, when the UE transmits data using dual connectivity, harmonic interference may be introduced. In order to reduce and / or avoid such harmonic interference, the UE may transmit uplink signals to the primary node and the secondary node at different times using the TDM transmission mode. The primary node (e.g., LTE node) and the secondary node (e.g., NR node) may coordinate the TDM transmission mode for the UE on an interface (e.g., X2 / Xn). If the primary node decides to reserve resources for uplink scheduling for the UE, the secondary node may avoid using the same resources for uplink scheduling for the same UE.

[0058] In this particular embodiment, the master node notifies the UE directly of the TDM transmission mode. For example, the master node may include an indicator indicating the TDM transmission mode in an RRC message. In some embodiments, the offset may be UE-specific, such as a UE-specific time offset or a cell-level time offset. The UE may obtain the offset via an RRC message or a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH). In some embodiments, the PDCCH or EPDCCH may carry an SPS activation command. In this particular embodiment, the offset range is 0 to 9. The uplink SPS pattern may be shifted by the offset, such as shown in Table 3. The UE then performs uplink transmission based on the shifted semi-static grant.

[0059] Example 5

[0060] A wireless node (e.g., an LTE node) may suffer from inter-frequency interference from other wireless nodes in uplink transmissions. To reduce and / or avoid such interference, all UEs of the wireless node may transmit uplink signals at different times using a TDM transmission mode that is different from the transmission mode used by other wireless nodes. The wireless node (e.g., an LTE node) may determine the TDM transmission mode through an interface (e.g., X2 / Xn). If the wireless node decides to reserve resources for uplink scheduling, other wireless nodes may avoid using the same resources for uplink scheduling.

[0061] In this particular embodiment, the wireless node notifies the UE of the TDM transmission mode. For example, the wireless node may include an indicator and an offset indicating the TDM transmission mode in an RRC message. The offset may be UE-specific, such as a UE-specific time offset or a cell-level time offset. In some embodiments, the offset may be in milliseconds, such as 1 ms. The UE may obtain the offset via an RRC message or via a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH). In some embodiments, the RRC message includes system information and RRC dedicated information. In some implementations, the PDCCH or EPDCCH may carry an SPS activation command. In this particular embodiment, the offset range is 0 to 9. The uplink SPS pattern may be shifted by the offset, such as shown in Table 3. The UE then performs uplink transmission based on the shifted semi-static grant.

[0062] Note that although this patent document discusses interference such as intermodulation interference and harmonic interference, the disclosed technology can also be applied to other types of interference scenarios. It should also be noted that although the embodiment describes a UE operating in a dual connectivity mode, the technology can also be applied to other transmission modes as long as the base station uses a TDM transmission mode for uplink transmission.

[0063] Figure 4 An example of a wireless communication system in which techniques according to one or more embodiments of the present technology can be applied is shown. The wireless communication system 400 may include one or more base stations (BSs) 405a, 405b, one or more wireless devices 410a, 410b, 410c, 410d, and a core network 425. The base stations 405a, 405b may provide wireless services for the wireless devices 410a, 410b, 410c, and 410d in one or more wireless sectors. In some implementations, the base stations 405a, 405b include directional antennas to generate two or more directional beams to provide wireless coverage in different sectors.

[0064] The core network 425 can communicate with one or more base stations 405a, 405b. The core network 425 provides connectivity with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases to store information related to subscribed wireless devices 410a, 410b, 410c and 410d. The first base station 405a can provide wireless services based on a first wireless access technology, and the second base station 405b can provide wireless services based on a second wireless access technology. Depending on the deployment scenario, the base stations 405a and 405b can be located at the same location or installed on site separately. The wireless devices 410a, 410b, 410c and 410d can support a variety of different wireless access technologies.

[0065] In some implementations, a wireless communication system may include multiple networks using different wireless technologies. A dual-mode or multi-mode wireless device includes two or more wireless technologies that can be used to connect to different wireless networks.

[0066] Figure 5 5 is a block diagram representation of a portion of a wireless station. A wireless station 505, such as a base station or a wireless device (or UE), may include a processor electronic device 510, such as a microprocessor, that implements one or more wireless technologies provided in this document. The wireless station 505 may include a transceiver electronic device 515 for sending and / or receiving wireless signals through one or more communication interfaces (such as an antenna 520). The wireless station 505 may include other communication interfaces for transmitting and receiving data. The wireless station 505 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some implementations, the processor electronic device 510 may include at least a portion of the transceiver electronic device 515. In some implementations, at least some of the disclosed techniques, modules, or functions are implemented using the wireless station 505.

[0067] Figure 6 6 is a flow chart representation of a method 600 for wireless communication. The method 600 includes, at 602, receiving information indicating a time domain transmission pattern at a wireless device. The method 600 includes, at 604, determining a periodic transmission pattern based on the time domain transmission pattern and a subframe offset of the wireless device. The method 600 further includes, at 606, transmitting data to a communication node according to the periodic transmission pattern.

[0068] Figure 7 7 is a flowchart representation of a method 700 for wireless communication. The method 700 includes, at 702, transmitting information indicating a time domain transmission pattern to a wireless device. The method 700 also includes, at 704, receiving data from the wireless device according to the periodic transmission pattern, wherein the periodic transmission pattern is determined based on the transmission pattern and a subframe offset of the wireless device.

[0069] Therefore, it is apparent that technology related to a time division multiplexing (TDM) transmission scheme has been disclosed. In particular, when a corresponding communication node adopts a TDM transmission mode for uplink transmission, the TDM transmission scheme can be used for a UE. The communication node can notify the UE of the TDM transmission mode together with an offset. The offset can be a UE-specific offset, such as a subframe offset or a HARQ offset. Each UE can use the offset to shift the initial grant position of the transmission mode to form different periodic transmission modes, thereby minimizing interference and reducing the possibility of conflicts between new transmissions and retransmissions during periodic transmissions.

[0070] From the foregoing it will be appreciated that specific embodiments of the presently disclosed technology have been described herein for purposes of illustration, but that various modifications may be made without departing from the scope of the invention. Accordingly, the invention is not to be limited, except as by the appended claims.

[0071] The disclosed and other embodiments, modules and functional operations described in this document may be implemented in digital electronic circuits, or in computer software, firmware or hardware, including the structures disclosed in this document and their structural equivalents, or in a combination of one or more thereof. The disclosed and other embodiments may be implemented as one or more computer program products, i.e., one or more computer program instruction modules encoded on a computer-readable medium for execution by a data processing device or for controlling the operation of a data processing device. The computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a storage device, a material combination that affects a machine-readable propagation signal, or a combination of one or more thereof. The term "data processing device" encompasses all devices, equipment and machines for processing data, including, for example, a programmable processor, a computer or a multiprocessor or a multicomputer. In addition to hardware, the device may also include code that creates an execution environment for the computer program in question, such as code constituting a processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more thereof. A propagated signal is an artificially generated signal, such as a machine-generated electrical, optical or electromagnetic signal, which is generated to encode information for transmission to a suitable receiver device.

[0072] A computer program (also referred to as a program, software, software application, script, or code) may be written in any form of programming language, including compiled or interpreted languages, and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that contains other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple collaborative files (e.g., multiple files storing one or more modules, subroutines, or code portions). A computer program may be deployed to execute on one computer, or on multiple computers that are located at one location or distributed at multiple locations and interconnected by a communications network.

[0073] The processes and logic flows described in this document may be performed by one or more programmable processors that execute one or more computer programs to implement functions by operating on input data and generating output. The processes and logic flows may also be performed by a dedicated logic circuit (e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit)), and the apparatus may also be implemented as a dedicated logic circuit.

[0074] Processors suitable for executing computer programs include, for example, general-purpose and special-purpose microprocessors, and any one or more processors of any type of digital computer. Typically, the processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions, and one or more storage devices for storing instructions and data. Typically, a computer will also include or be operatively coupled to one or more mass storage devices (such as magnetic, magneto-optical disks or optical disks) for storing data to receive data from or transfer data to, or both. However, a computer need not have such devices. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and storage devices, including, for example, semiconductor storage devices, such as EPROM, EEPROM and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. The processor and memory may be supplemented or integrated with dedicated logic circuits.

[0075] Although this document contains a number of details, these details should not be interpreted as limitations on the scope of the invention that is or may be claimed, but rather as descriptions of features specific to a particular embodiment. Certain features described in this document in the context of different embodiments may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. Moreover, although the features may be described above as working in certain combinations or even initially claimed as such, in some cases, one or more features from the claimed combination may be removed from the combination, and the claimed combination may involve a sub-combination or a variant of a sub-combination.

[0076] Similarly, although operations are depicted in a particular order in the drawings, this should not be understood as requiring that the operations be performed in the particular order shown or in sequential order, or that all operations shown be performed to achieve the desired results. Furthermore, the separation of various system components in the embodiments described in this document should not be understood as requiring such separation in all embodiments.

[0077] Only a few implementations and examples are described, and other implementations, enhancements, and variations may be obtained based on what is described and illustrated in this patent document.

Claims

1. A method for wireless communication, comprising: receiving, at a wireless device, information indicating a time domain transmission mode; determining a periodic transmission pattern based on the time domain transmission pattern and an offset of the wireless device, wherein the periodic transmission pattern is a semi-static transmission pattern, and wherein a time domain position of an initial semi-static grant of the semi-static transmission pattern is determined based on the time domain transmission pattern and the offset; and Data is transmitted to the communication node according to the periodic transmission pattern.

2. The method of claim 1, wherein the offset is a subframe offset, a HARQ offset, or a time offset.

3. The method according to claim 1 or 2, wherein the information indicating the time domain transmission mode is located in a radio resource control RRC message.

4. The method according to claim 1 or 2, further comprising: At the wireless device, the offset is received in a Radio Resource Control (RRC) message.

5. The method according to claim 1 or 2, further comprising: At the wireless device, a message including the offset is received via a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH).

6. A method for wireless communication, comprising: transmitting information indicating a time domain transmission mode to a wireless device; as well as Data is received from the wireless device according to a periodic transmission pattern, wherein the periodic transmission pattern is determined based on the transmission pattern and an offset of the wireless device, wherein the periodic transmission pattern is a semi-static transmission pattern, and wherein a time domain position of an initial semi-static grant of the semi-static transmission pattern is determined based on the time domain transmission pattern and the offset. The method of claim 6 , wherein the offset is a subframe offset, a HARQ offset, or a time offset.

8. The method according to claim 6 or 7, wherein the information indicating the time domain transmission mode is located in a radio resource control (RRC) message.

9. The method according to claim 6 or 7, further comprising: The offset is transmitted to the wireless device in a Radio Resource Control (RRC) message.

10. The method according to claim 6 or 7, further comprising: A message including the offset is transmitted to the wireless device via a physical downlink control channel (PDCCH) or an enhanced PDCCH (EPDCCH).

11. An apparatus for wireless communication, comprising a processor and a memory, wherein the processor is configured to read instructions from the memory to execute the method according to any one of claims 1 to 10.

12. A non-transitory computer readable medium having stored thereon codes which, when executed by a processor, cause the processor to implement the method according to any one of claims 1 to 10.

Images