TW201807974A - Handing retransmission grants in mobile communication devices - Google Patents

Abstract

Various methods for handling retransmission grants in a mobile communication device may include initiating a detection window upon detecting that a tune- away from a first radio access technology (RAT) to a second RAT has started, determining whether the first RAT has received an uplink grant that includes a changed transport block (TB) size and no new data indicator (NDI) toggling, and handling the uplink grant and placing a corresponding radio link control (RLC) protocol data unit (PDU) in a RLC retransmission queue for fast retransmission in response to determining that the first RAT has received an uplink grant that includes a changed TB size and no NDI toggling.

Description

Handling retransmission licenses in mobile communication devices

The content of this case is about handling retransmission permits in mobile communication devices.

Some designs of mobile communication devices, such as smart phones, tablets, and laptops, include one or more Subscriber Identity Module (SIM) cards that provide users with access to multiple separate mobile phone networks. access. Examples of mobile phone network technologies known as radio access technology (RAT) include third generation (3G), fourth generation (4G), long term evolution (LTE), time division multiple access (TDMA), and sub- Frequency Multiple Access (FDMA), Code Division Multiple Access (CDMA), Wideband CDMA (WCDMA), Time Division Synchronous CDMA (TD-SCDMA), Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS) Evolutionary High Speed Packet Access (HSPA+), Dual Cell High Speed Packet Access (DC-HSPA), Evolutionary Data Optimization (EV-DO), GSM Evolutionary Enhanced Data Rate (EDGE) and Single Carrier Radio Transmission Technology (1xRTT) ).

A mobile communication device that includes one or more SIMs and that uses a shared radio frequency (RF) resource/radio unit to connect to two or more separate mobile telephone networks may be referred to as a multiple SIM multiple standby (MSMS) communication device. Sharing RF resources via concurrent radio access technology (CRAT) can result in hardware cost savings.

One example of a MSMS communication device is a dual SIM dual standby (DSDS) communication device that includes two SIM cards that support two subscriptions associated with different RATs that share one RF resource. In a DSDS communication device, separate subscriptions share an RF resource to communicate with two separate mobile phone networks representing their respective subscriptions. When one RAT is using RF resources, the other RAT is in standby mode and cannot use the RF resources for communication.

Various examples include methods for processing retransmission grants in a mobile communication device, and mobile communication devices implementing such methods. Various examples may include: starting a detection window when detecting that tuning from the first RAT to the second RAT has started, determining whether the first RAT has received a transport block (TB) size including the change and does not include new data. An indicator (NDI) flipped uplink grant, and in response to determining that the first RAT has received an uplink grant that includes a changed TB size and does not include an NDI rollover, processing the uplink grant and corresponding The Radio Link Control (RLC) Protocol Data Unit (RLC) is placed in the RLC retransmission queue for fast retransmission.

In some examples, determining whether the first RAT has received an uplink grant includes determining whether the first RAT has received an uplink grant within the alert window. Some examples may further include determining whether the detection window is still active, and ignoring the uplink grant in response to determining that the detection window is not active. Some examples may also include determining whether a current hybrid automatic repeat request (HARQ) procedure is still active in the detection window, and in response to determining that the current HARQ procedure is not active within the detection window. And ignore the uplink license. Some examples may further include ignoring the uplink grant in response to determining that the first RAT has received an TB size that does not include a change or an uplink grant with an NDI rollover.

In some examples, the duration of the detection window can be at least one active HARQ duration. In some examples, the duration of the detection window can be determined as the sum of the duration of the tuning and the duration of at least one active HARQ. In some examples, the at least one active HARQ duration may be related to a frequency division duplex (FDD) timer or a time division duplex (TDD) timer multiplied by (maxHARQ_Tx-1), where maxHARQ_Tx, the FDD timer, and the The TDD timer is configured via radio resource control or base station.

Further examples include a mobile communication device configured to receive a Subscriber Identity Module (SIM), including: a memory configured to support RF resources of a first RAT and a second RAT, and configured to perform the methods outlined above The processor of the operation. Further examples include mobile communication devices that include elements for performing the functions of the methods outlined above. Further examples include non-transitory processor readable storage media having processor executable software instructions stored thereon, the processor executable software instructions being configured to cause a processor of the mobile communication device to perform the operations of the methods outlined above.

Various examples will be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numerals reference References to specific examples and implementations are for illustrative purposes and are not intended to limit the scope of the written description or claims.

As used herein, the terms "mobile communication device," "multi-SIM mobile communication device," or "multi-SIM device" refer to cellular phones, smart phones, personal or mobile multimedia players, personal data assistants, and notebook computers. Any or all of, tablets, smart books, smart watches, palmtop computers, wireless email receivers, cellular phones supporting multimedia internet, wireless game controllers, and similar personal electronic devices, including One or more SIM cards, a programmable processor, memory, and circuitry for connecting to at least two mobile communication networks with one or more shared RF resources. Various examples may be useful in mobile communication devices such as smart phones, and thus these devices are cited in the description of various examples. However, these examples may be useful in any electronic device that can separately maintain a plurality of RATs that utilize one or more subscriptions of at least one shared RF chain, which may include antennas, radios, transceivers, etc. One or more of them.

As used herein, the terms "SIM", "SIM card" and "user identity module" are used interchangeably to refer to a memory that may be integrated or embedded in a removable card and that is stored in the memory. International Mobile User Identity (IMSI), associated keys, and/or other information used to identify and/or authenticate mobile communication devices on the network and enable communication services with the network. Since the information stored in the SIM enables the mobile communication device to establish a communication link for a particular communication service with a particular network, the term "subscription" is used herein as a short reference to refer to the following communication service: when specific The SIM and communication network, and the services and subscriptions supported by the network are related to each other, communication services associated with the information stored in the SIM and achievable via the information.

In the following description of various examples, a first subscription and a second subscription and a first RAT and a second RAT are referenced. References to the first and second subscriptions and RATs are arbitrary and are only used to describe the purpose of the examples. The device processor can assign any indicator, name, or other designation to distinguish between subscriptions and RATs on the mobile communication device.

One consequence of configuring a mobile communication device to support multiple RATs that use shared RF resources while maintaining network connectivity is that one RAT sometimes interrupts communication for another RAT because a RAT can use shared RF resources with its actions each time. The network communicates. Even if the RAT is in "idle standby" mode, which means that the RAT is not actively communicating with the network, the RAT still needs to periodically receive access to the shared RF resources in order to perform various network operations. For example, an idle RAT may need to use shared RF resources at regular intervals to perform idle mode operations or to receive paging messages.

In a typical multi-SIM multi-standby (MSMS) mobile communication device, an idle RAT may occasionally interrupt RF operations of an active RAT such that the idle RAT may use shared RF resources to perform idle mode operation of the idle RAT (eg, paging) Monitoring and decoding, cell reselection, system information monitoring, etc.). Since the RF resource is tune away from the frequency band or channel of the active RAT and tuned to the frequency band or channel of the idle RAT, this procedure for switching the access to the shared RF resource from the active RAT to the idle RAT is referred to herein. "Transfer". After the idle RAT completes its network communication, access to the RF resources can be switched from the idle RAT to the active RAT via a "back" operation. For example, an LTE+GSM dual SIM dual standby (DSDS) mobile communication device may have a first subscription utilizing an LTE RAT and a second subscription utilizing a GSM RAT. The mobile communication device can periodically tune RF resources from the first subscription to the second subscription for page monitoring, voice or short message service (SMS) services, and GSM resident operations (eg, measuring and performing cell weight if needed) Select, read system information, perform location registration, etc.).

In a CRAT mobile communication device, tune away can also occur between two different RATs utilized by the same subscription. For example, a CRAT device may have one SIM/subscription that utilizes an LTE RAT and another RAT, such as GSM or CDMA2000. Thus, tune away can be performed between RATs utilized by the same subscription.

Tuning from the active RAT to the idle RAT may interfere with the communication exchange on the active RAT. For example, the network of the active RAT can send an uplink grant to the active RAT. In response, the active RAT may prepare a packet for transmission via a Physical Uplink Shared Channel (PUSCH). However, it is possible that a tune away from the idle RAT occurs during the scheduled PUSCH transmission, and thus the transmission is skipped. After tune away, subsequent uplink grants may be discarded, which may add delay to the physical layer after the backhaul to the active RAT. The discarded license may be due to a change in the size of the transport block (TB) in an uplink grant without a new data indicator (NDI) rollover, which is considered an invalid license by the mobile communication device. The Physical Uplink Control Channel (PUCCH) may be used to transmit a Physical Downlink Shared Channel (PDSCH) acknowledgement (ACK) or a negative acknowledgement (NAK), in lieu of PUSCH, due to the drop of uplink grant. At the same time, the network does not decode the PUCCH due to the expected PUSCH transmission. This can result in longer PDSCH retransmission times due to downlink protocol data units (PDUs) outside the receive window on the downlink. PUSCH transmissions lost due to tune away may occur more frequently in CRAT devices.

In summary, various examples provide systems and methods for processing retransmission grants in the presence of tune away, implemented by a processor of a mobile communication device (e.g., a multi-SIM mobile communication device). In some examples, the processor may initiate a detection window when detecting that the tune away from the first RAT to the second RAT has started, and determine whether the first RAT has received the TB size including the change and does not include the NDI. Flip uplink permission. If the uplink grant has a changed TB size and does not include an NDI rollover, the processor can process the uplink grant and place a corresponding Radio Link Control (RLC) Protocol Data Unit (PDU) for fast retransmission The RLC retransmission queue.

Various examples may be implemented within various communication systems 100, such as at least two mobile telephone networks, an example of which is illustrated in FIG. Each of the first mobile network 102 and the second mobile network 104 typically includes a plurality of cellular base stations (e.g., a first base station 130 and a second base station 140). The first mobile communication device 110 can communicate with the first mobile network 102 via a cellular connection 132 to the first base station 130. The first mobile communication device 110 can also communicate with the second mobile network 104 via a cellular connection 142 to the second base station 140. The first base station 130 can communicate with the first mobile network 102 via a wired connection 134. The second base station 140 can communicate with the second mobile network 104 via a wired connection 144.

The second mobile communication device 120 can similarly communicate with the first mobile network 102 via a cellular connection 132 to the first base station 130. The second mobile communication device 120 can also communicate with the second mobile network 104 via the cellular connection 142 to the second base station 140. Honeycomb connections 132 and 142 may be via, for example, third generation (3G), fourth generation (4G), long term evolution (LTE), time division multiplex access (LTE), time division multiplex access (TDMA), minutes Formed by two-way wireless communication technologies such as Code Multiple Access (CDMA), Wideband CDMA (WCDMA), Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), and other mobile telephony technologies.

Although the mobile communication devices 110, 120 are shown as being connected to the first mobile network 102 and optionally to the second mobile network 104, in some instances (not shown), the mobile communication devices 110, 120 Two or more RATs to two or more mobile networks may be included and may be connected to those RATs in a manner similar to those described herein.

In some examples, the first mobile communication device 110 can optionally establish a wireless connection 152 with the peripheral device 150 used in conjunction with the first mobile communication device 110. For example, the first mobile communication device 110 can communicate with a Bluetooth-enabled personal computing device (eg, a "smart watch") via a Bluetooth® connection. In some examples, the first mobile communication device 110 can optionally establish a wireless connection 162 with the wireless access point 160, such as via a Wi-Fi connection. Wireless access point 160 can be configured to connect to Internet 164 or another network via wired connection 166.

Although not shown, the second mobile communication device 120 can similarly be configured to connect with the peripheral device 150 and/or the wireless access point 160 via a wireless link.

2 is a functional block diagram of a multi-SIM mobile communication device 200 suitable for implementing various examples. Referring to Figures 1-2, a multi-SIM mobile communication device 200 can be similar to one or more of the mobile communication devices 110, 120 as described. The multi-SIM mobile communication device 200 can include a first SIM interface 202a that can receive a first identity module SIM-1 204a associated with a first subscription. The multi-SIM mobile communication device 200 can also optionally include a second SIM interface 202b that can receive an optional second identity module SIM-2 204b associated with the second subscription.

The SIMs in the various examples may be Universal Integrated Circuit Cards (UICCs) configured with SIM and/or Universal SIM applications that are capable of accessing, for example, GSM and/or UMTS networks. UICC can also provide storage for phonebooks and other applications. Alternatively, in a CDMA network, the SIM may be a UICC Mobile User Identity Module (R-UIM) or a CDMA User Identity Module (CSIM) on the card. The SIM card can have a central processing unit (CPU), read only memory (ROM), random access memory (RAM), electronic erasable programmable read only memory (EEPROM), and input/output (I/O). ) Circuit.

The SIMs used in the various examples may include user account information, International Mobile User Identity (IMSI), a set of SIM Application Toolkit (SAT) commands, and storage space for the phone book contact. The SIM card may also store a home identifier (eg, a system identification number (SID) / network identification number (NID) pair, a home public land mobile number (HPLMN) code, etc.) to indicate the SIM card network service provider provider. The integrated circuit card identity (ICCID) SIM serial number can be printed on the SIM card for identification. However, the SIM can be implemented in a portion of the memory of the multi-SIM mobile communication device 200 (e.g., in memory 214), and thus does not need to be a separate or removable circuit, chip or card.

The multi-SIM mobile communication device 200 can include at least one controller, such as a general purpose processor 206, that can be coupled to an encoder/decoder (CODEC) 208. Transcoder 208 can be coupled to both speaker 210 and microphone 212. General purpose processor 206 can also be coupled to memory 214. Memory 214 can be a non-transitory computer readable storage medium that stores processor-executable instructions. For example, the instructions can include routing communication material associated with the first or second subscription via a corresponding baseband RF resource chain. The memory 214 can store advanced operating systems as well as user application software and executable instructions.

Each of general purpose processor 206 and memory 214 can be coupled to at least one baseband data processor 216. Each of the multiple SIM mobile communication devices 200, the SIM and/or RAT (e.g., SIM-1 204a and/or SIM-2 204b) may be associated with a baseband RF resource chain. The baseband RF resource chain can include a baseband data processor 216 that can perform baseband/dataphone functions for communicating/controlling the RAT with the RAT, and can include one or more amplifiers and radios, in this document Often referred to as RF resources (eg, RF resources 218). In some examples, the baseband RF resource chain can share a baseband data processor 216 (i.e., a single device that performs baseband/dataframe functions for all RATs on the multi-SIM mobile communication device 200). In other examples, each baseband RF resource chain can include physical or logically separated baseband processors (eg, BB1, BB2).

The RF resource 218 may be a transceiver that performs a transmit/receive function for each SIM/RAT on the multi-SIM mobile communication device 200. The RF resources 218 may include separate transmit and receive circuits or may include transceivers that combine transmitter and receiver functions. In some examples, RF resource 218 can include multiple receive circuits. The RF resource 218 can be coupled to a wireless antenna (e.g., wireless antenna 220). The RF resource 218 can also be coupled to the baseband data processor 216.

In some examples, general purpose processor 206, memory 214, baseband processor 216, and RF resources 218 may be included in multi-SIM mobile communication device 200 as system on chip 250. In some examples, the first and second SIMs 204a, 204b and corresponding interfaces 202a, 202b can be external to the system on chip 250.

Various input and output devices can be coupled to components on system on chip 250, such as an interface or controller. Example user input components suitable for the multi-SIM mobile communication device 200 can include, but are not limited to, a keyboard 224, a touch screen display 226, and a microphone 212. In some examples, keyboard 224, touch screen display 226, microphone 212, or a combination thereof, can perform functions related to receiving a request to initiate an outgoing call. For example, touch screen display 226 can receive a selection of a contact from a contact list or receive a phone number. In another example, one or both of touch screen display 226 and microphone 212 can perform functions regarding receiving a request to initiate an outgoing call. For example, touch screen display 226 can receive a selection of a contact from a contact list or receive a phone number. As another example, the request to initiate an outgoing call may be in the form of a voice command received via the microphone 212. An interface may be provided between the various software modules and functions in the multi-SIM mobile communication device 200 to enable communication therebetween, as is known in the art to which the present invention pertains.

Together, two SIMs 204a, 204b, baseband processors BB1, BB2, RF resources 218, and wireless antennas 220 may constitute two or more radio access technologies (RATs). For example, the multi-SIM mobile communication device 200 can be an LTE communication device including a SIM, a baseband processor, and RF resources configured to support two different RATs, such as LTE, WCDMA, and GSM. More RATs can be supported on the multi-SIM mobile communication device 200 by adding more SIM cards, SIM interfaces, RF resources, and antennas for connecting to additional mobile networks.

In some examples (not shown), in addition to other elements, the multi-SIM mobile communication device 200 can include additional SIM cards, a SIM interface, a plurality of RF resources associated with additional SIM cards, and support and other actions. An additional antenna for the network's subscription communication.

3 includes a timing diagram 300 illustrating the processing of retransmission grants in a multi-SIM multi-standby mobile communication device in the presence of tune away, in accordance with various examples. When the call is interrupted during the hybrid automatic repeat request (HARQ) transmission procedure, the uplink transmission is interrupted. When the mobile communication device receives a new uplink grant from the network with a TB size change and no NDI rollover, and the HARQ procedure is still active, the HARQ procedure can be reset and the uplink grant can be used as New license to handle.

Therefore, during the duration of the HARQ activity, the detection of the uplink grant can be implemented within the detection window. Considering that the mobile communication device can receive a new uplink grant during the tune away gap, the detection window can begin at the beginning of the tune away gap, which is indicated in the diagram 300 as "RF Unavailable Ind" (" RF is not available for Ind"). The duration of the detection window can be set to the sum of the duration of the divergence and the product of the frequency division duplex (FDD) or time division duplex (FDD) multiplied by (maxHARQ_Tx-1), where maxHARQ_Tx It is configured via Radio Resource Control (RRC). In other words, the duration of the detection window can be set to N=NTA+NHarqActive, where NTA is the duration of the tune away and NHarqActive is the uplink HARQ activity duration. The uplink HARQ activity duration may be determined as NHarqActive = maxHARQ_RTT_timer*(maxHARQ_Tx-1), where maxHARQ_RT_timer is configured with a frequency division duplex (FDD) or a time division duplex (TDD) as specified by the communication protocol (eg, The 8 subframes for FDD, the maximum specified by the configuration for TDD are related, and the maxHARQ_Tx is configured via Radio Resource Control (RRC).

The detection window can be applied to fast tune away (QTA) and fast short pulse tune away (QBTA). In some instances, the duration of the detection window may be the same for QTA and QBTA. In other examples, the duration of the detection window for the QTA may be NHarqActive because the mobile communication device will not receive a new uplink grant during the tune away. The detection window can be applied to a primary component carrier (PCC) and a secondary component carrier (SCC) in the case of uplink carrier aggregation.

4 illustrates a method 400 for processing a retransmission grant in a mobile communication device in accordance with various examples. Method 400 can be implemented by a processor (e.g., general purpose processor 206, baseband data processor 216, separate controller, etc.) of a mobile communication device (such as mobile communication device 110, 120) that supports sharing The first RAT and the second RAT of the RF resource. The first RAT and the second RAT may share the same subscription or may be associated with different subscriptions. The first RAT may be currently in active communication with its corresponding network.

In block 402, the processor may initiate a tune away from the first RAT to the second RAT. The tune away can be QTA or QBTA.

In block 404, the processor can initiate a HARQ reset detection window with a specified duration. The duration of the detection window may be at least one active HARQ duration, or may be the sum of the duration of the tune away and the duration of the at least one active HARQ. The at least one active HARQ duration may be related to a frequency division duplex (FDD) timer or a time division duplex (TDD) timer multiplied by (maxHARQ_Tx-1), wherein the maxHARQ_Tx, the FDD timer, and the TDD timer are via Radio resource control or base station configuration. For example, the duration can be set to N=NTA+NHarqActive, where NTA is the duration of the tune away and NHarqActive is the uplink HARQ activity duration. The uplink HARQ activity duration may be determined as NHarqActive = maxHARQ_RTT_timer*(maxHARQ_Tx-1), where maxHARQ_RT_timer is a time division duplex (FDD) timer or time division duplex (TDD) timing as specified by the communication protocol The device (eg, 8 subframes for FDD; the maximum specified by the configuration for TDD) is related, and maxHARQ_Tx is configured via Radio Resource Control (RRC) or base station. In other examples, the duration can be set to N=NHarqActive.

In decision block 406, the processor can determine if the detection window is still active. In response to determining that the detection window is no longer active (ie, decision block 406 = "No"), the processor may ignore the uplink grant in block 416 (ie, continue with the legacy uplink processing behavior). .

In response to determining that the detection window is still active (i.e., decision block 406 = "Yes"), the processor can determine in decision block 408 whether the current HARQ program is active in the detection window. In response to determining that the current HARQ procedure is not active in the detection window (i.e., decision block 408 = "No"), the processor may ignore the uplink grant in block 416.

In response to determining that the current HARQ procedure is active in the detection window (i.e., decision block 408 = "Yes"), the processor may determine in block 410 whether the active RAT has been received in the detection window. Uplink grant with changed TB size and no NDI flip. In response to determining that the uplink grant does not have a changed TB size or has an NDI rollover (ie, decision block 410 = "No"), the processor may ignore the uplink grant in block 416.

In response to determining that the uplink grants have different TB sizes and no NDI rollover (ie, decision block 410 = "No"), the processor may process the uplink grants in block 412 and place corresponding ones in block 414. The Radio Link Control (RLC) Protocol Data Unit (PDU) is in the RLC retransmission queue for fast retransmission. For example, the processor may process the uplink grant as a new grant and discard the corresponding Radio Link Control (RLC) PDU, and then place the dropped RLC PDU in the RLC retransmission queue for fast retransmission. .

Various examples may be implemented in any of a variety of communication devices, examples of which are shown in FIG. 5 (e.g., multi-SIM mobile communication device 500). The multi-SIM mobile communication device 500 can be similar to the mobile communication devices 110, 120, 200 as described. As such, the multi-SIM mobile communication device 500 can implement the method 400 in accordance with various examples.

The multi-SIM mobile communication device 500 can include a processor 50 coupled to a touch screen controller 504 and internal memory 506. Processor 502 can be one or more multi-core integrated circuits that are designated for general purpose or dedicated processing tasks. Internal memory 506 can be volatile or non-volatile memory, and can also be a secure and/or encrypted memory, or an unsecured and/or unencrypted memory, or any combination of the above. The touch screen controller 504 and the processor 502 can also be coupled to the touch screen panel 512, such as a resistive sensing touch screen, a capacitive sensing touch screen, an infrared sensing touch screen, and the like. In addition, the display of the multi-SIM mobile communication device 500 does not need to have a touch screen function.

The multi-SIM mobile communication device 500 can have one or more cellular network transceivers 508 coupled to the processor 502 and one or more antennas 510 and configured to transmit and receive cellular communications. One or more transceivers 508 and one or more antennas 510 can be used with the circuits mentioned herein to implement various example methods. The multi-SIM mobile communication device 500 can include one or more SIM cards 516 coupled to one or more transceivers 508 and/or processor 502 and can be configured as described herein.

The multi-SIM mobile communication device 500 can also include a speaker 514 for providing audio output. The multi-SIM mobile communication device 500 can also include a housing 520 constructed of a combination of plastic, metal, or material for including all or some of the components discussed herein. The multi-SIM mobile communication device 500 can include a power source 522 coupled to the processor 502, such as a disposable or rechargeable battery. A rechargeable battery can also be coupled to the peripheral device port to receive charging current from a source external to the multi-SIM mobile communication device 500. The multi-SIM mobile communication device 500 can also include a physical button 524 for receiving user input. The multi-SIM mobile communication device 500 can also include a power button 526 for turning the multi-SIM mobile communication device 500 on and off.

Various examples of the description and description are provided by way of example only, in order to illustrate various features of the scope of the claims. However, the features shown and described with respect to any given example are not necessarily limited to the associated examples, and may be used or combined with other examples shown and described. In addition, the scope of patent application is not intended to be limited by any one example.

The above described method descriptions and process flow diagrams are provided as illustrative examples only and are not intended to be required or implied that the operations of the various examples must be performed in the order presented. As will be understood by those of ordinary skill in the art to which the present invention pertains, the order of the operations in the foregoing examples can be performed in any order. Words such as "after", "subsequent", "next" are not intended to limit the order of operations; these words are simply used to guide the reader through the description of the method. In addition, the use of the articles "a", "an" or "the"

The various illustrative logical blocks, modules, circuits, and algorithm operations described in connection with the examples disclosed herein can be implemented as an electronic hardware, a computer software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and operations are generally described herein. Whether this functionality is implemented as hardware or software depends on the particular application and design constraints imposed on the overall system. Although a person skilled in the art can implement the described functions in different ways for each particular application, such implementation decisions should not be construed as causing a departure from the scope of the embodiments of the invention.

The hardware used to implement the various illustrative logic elements, logic blocks, modules, and circuits described in connection with the aspects disclosed herein may be a general purpose processor, digital signal processor (DSP) designed to perform the functions described herein. ), Special Application Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, individual gate or transistor logic, individual hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Alternatively, some operations or methods may be performed by circuitry dedicated to a given function.

In one or more aspects, the functions described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, these functions may be stored as one or more instructions or code on a non-transitory computer readable storage medium or non-transitory processor readable storage medium. The operations of the methods or algorithms disclosed herein may be implemented in a processor executable software module that may reside on a non-transitory computer readable or processor readable storage medium. The non-transitory computer readable or processor readable storage medium can be any storage medium that can be accessed by a computer or processor. By way of example and not limitation, such non-transitory computer readable or processor readable storage medium may include RAM, ROM, EEPROM, flash memory, CD-ROM or other optical disk storage, disk storage or other magnetic storage device Or can be used for any other medium that stores the desired code in the form of an instruction or data structure and that can be accessed by a computer. Disks and optical discs as used herein include compact discs (CDs), laser discs, compact discs, digital versatile discs (DVDs), floppy discs, and Blu-ray discs, where the discs are typically magnetically reproduced and the discs are lasered. Reproduce data optically. Combinations of storage media are also included in the context of non-transitory computer readable and processor readable media. In addition, the methods or algorithms may operate as one or any combination or collection of code and/or on a non-transitory processor readable storage medium and/or computer readable storage medium that can be incorporated into a computer program product. Instructions to store.

The previous description of the disclosed examples is provided to enable any person of ordinary skill in the art to make or use the invention. Various modifications to these examples will be apparent to those of ordinary skill in the art of the invention, and the general principles defined herein may be applied to some examples without departing from the spirit or scope of the written description. Therefore, the content of the present disclosure is not intended to be limited to the examples shown herein, but is to be accorded the broadest scope of the scope of the appended claims and the principles and novel features disclosed herein.

100‧‧‧Communication system

102‧‧‧First mobile network

104‧‧‧Second mobile network

110‧‧‧First mobile communication equipment

120‧‧‧Second mobile communication equipment

130‧‧‧First Base Station

132‧‧‧Hive connection

134‧‧‧Wired connection

140‧‧‧Second base station

142‧‧‧Hive connection

144‧‧‧ wired connection

150‧‧‧ Peripherals

152‧‧‧Wireless connection

160‧‧‧Wireless access point

162‧‧‧Wireless connection

164‧‧‧Internet

166‧‧‧ wired connection

200‧‧‧Multi SIM mobile communication equipment

202a‧‧‧First SIM interface

202b‧‧‧Second SIM interface

204a‧‧‧First Identity Module SIM-1

204b‧‧‧Second Identity Module SIM-2

206‧‧‧General Processor

208‧‧‧ Transcoder

210‧‧‧Speakers

212‧‧‧ microphone

214‧‧‧ memory

216‧‧‧Based frequency data processor

218‧‧‧RF resources

220‧‧‧Wireless antenna

224‧‧‧ keyboard

226‧‧‧Touch screen display

250‧‧‧System on Chip

300‧‧‧ Timing diagram

400‧‧‧ method

402‧‧‧ square

404‧‧‧ square

406‧‧‧ square

408‧‧‧ squares

410‧‧‧ square

412‧‧‧ square

414‧‧‧ squares

416‧‧‧ square

500‧‧‧Multi SIM mobile communication equipment

502‧‧‧ processor

504‧‧‧Touch screen controller

506‧‧‧Internal memory

508‧‧‧Hive Network Transceiver

510‧‧‧Antenna

512‧‧‧Touch screen panel

514‧‧‧Speaker

516‧‧‧SIM card

520‧‧‧Shell

522‧‧‧Power supply

524‧‧‧ physical button

526‧‧‧Power button

The drawings, which are incorporated in and constitute a part of the specification, are intended to illustrate the features of the disclosed systems and methods.

1 is a block diagram of a communication system suitable for use in various embodiments of a mobile telephone network.

2 is a block diagram of components of a multi-SIM mobile communication device in accordance with various examples.

3 is a timing diagram showing processing of a retransmission grant in a mobile communication device in accordance with various examples.

4 is a process flow diagram showing a method for processing a retransmission permission in a mobile communication device in accordance with various examples.

5 is a block diagram of components of a mobile communication device suitable for implementing some example methods.

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Claims (32)

A method for processing a retransmission grant in a mobile communication device, comprising the steps of: initiating a detect when a tune away from a first radio access technology (RAT) to a second RAT has been detected a measurement window; determining whether the first RAT has received an uplink grant including a changed transport block (TB) size and not including a new data indicator (NDI) rollover; and in response to determining that the first RAT has been Receiving an uplink grant including a changed TB size and not including an NDI rollover, processing the uplink grant and placing a corresponding Radio Link Control (RLC) Protocol Data Unit (PDU) for Fast retransmission of the RLC retransmission queue. The method of claim 1, wherein determining whether the first RAT has received an uplink grant comprises the step of determining whether the first RAT has received an uplink grant within the detection window. According to the method of claim 1, the method further includes the steps of: determining whether the detection window is still active; and ignoring the uplink permission in response to determining that the detection window is not active. According to the method of claim 1, the method further includes the steps of: determining whether a current hybrid automatic repeat request (HARQ) program is still active in the detection window; and responding to determining that the current HARQ program is in the detection The window is not active and ignores the uplink license. The method of claim 1, further comprising the step of: ignoring the uplink grant in response to determining that the first RAT has received an uplink grant that does not include a changed TB size or has an NDI rollover. The method of claim 1, wherein the duration of the detection window is at least one active HARQ duration. According to the method of claim 1, wherein a duration of the detection window is determined as a sum of a duration of the handover and at least one active HARQ duration. The method of claim 6 or claim 7, wherein the at least one active HARQ duration is related to a frequency division duplex (FDD) timer or a time division duplex (TDD) timer multiplied by (maxHARQ_Tx-1) The maxHARQ_Tx, the FDD timer, and the TDD timer are configured via a radio resource control or a base station. A mobile communication device comprising: a memory; a radio frequency (RF) resource configured to support a first radio access technology (RAT) and a second RAT; and a processor coupled to the memory, The RF resource is configured to: initiate a detection window when detecting that a tune away from the first RAT to the second RAT has started; and determine whether the first RAT has received a change including Transport block (TB) size and does not include an uplink grant for a new data indicator (NDI) rollover; and in response to determining that the first RAT has received an uplink that includes a changed TB size and does not include an NDI rollover The way, the uplink grant is processed and a corresponding Radio Link Control (RLC) Protocol Data Unit (PDU) is placed in an RLC retransmission queue for fast retransmission. The mobile communication device of claim 9, wherein the processor is further configured to determine whether the first RAT has received a first RAT by determining whether the first RAT has received an uplink grant within the detection window. Uplink license. The mobile communication device of claim 9, wherein the processor is further configured to: determine whether the detection window is still active; and ignore the uplink grant in response to determining that the detection window is not active. The mobile communication device of claim 9, wherein the processor is further configured to: determine whether a current hybrid automatic repeat request (HARQ) program is still active in the detection window; and in response to determining the current The HARQ program is not active within the detection window and ignores the uplink grant. The mobile communication device of claim 9, wherein the processor is further configured to: responsive to the decision that the first RAT has received an uplink grant that does not include a change TB size or has an NDI rollover, ignoring the uplink Link license. The mobile communication device of claim 9, wherein a duration of the detection window is at least one active HARQ duration. The mobile communication device of claim 9, wherein a duration of the detection window is determined as a sum of a duration of the handover and at least one active HARQ duration. The mobile communication device of claim 14 or claim 15, wherein the at least one active HARQ duration is multiplied by a frequency division duplex (FDD) timer or a time division duplex (TDD) timer (maxHARQ_Tx-1) Related, wherein maxHARQ_Tx, the FDD timer, and the TDD timer are configured via a radio resource control or a base station. A non-transitory computer readable storage medium having processor executable software instructions stored thereon, the processor executable software instructions being configured to cause a processor of a mobile communication device to perform operations comprising: A detection window is activated when it is detected that a tune away from a first radio access technology (RAT) to a second RAT has started; determining whether the first RAT has received a transport block including a change ( TB) an uplink grant that does not include a new data indicator (NDI) rollover; and in response to determining that the first RAT has received an uplink grant that includes a changed TB size and does not include an NDI rollover, The uplink grant is processed and a corresponding Radio Link Control (RLC) Protocol Data Unit (PDU) is placed in an RLC retransmission queue for fast retransmission. The non-transitory computer readable storage medium of claim 17, wherein the stored processor executable instructions are configured such that determining whether the first RAT has received an uplink grant comprises: determining the first RAT Whether an uplink grant has been received within the detection window. The non-transitory computer readable storage medium of claim 17, wherein the stored processor executable instructions are configured to cause the processor of the mobile communication device to perform operations further comprising: determining the detection Whether the window is still active; and ignoring the uplink grant in response to determining that the detection window is not active. The non-transitory computer readable storage medium of claim 17, wherein the stored processor executable instructions are configured to cause a processor of the mobile communication device to perform operations further comprising: determining a current Whether the hybrid automatic repeat request (HARQ) procedure is still active in the detection window; and in response to determining that the current HARQ procedure is not active within the detection window, ignoring the uplink grant. The non-transitory computer readable storage medium of claim 17, wherein the stored processor executable instructions are configured to cause a processor of the mobile communication device to perform operations further comprising: The first RAT has received an uplink grant that does not include a changed TB size or has an NDI rollover, ignoring the uplink grant. The non-transitory computer readable storage medium according to claim 17, wherein the duration of the detection window is at least one active HARQ duration. The non-transitory computer readable storage medium according to claim 17, wherein a duration of the detection window is determined as a sum of a duration of the tune away and at least one active HARQ duration. The non-transitory computer readable storage medium according to claim 22 or claim 23, wherein the at least one active HARQ duration is multiplied by a frequency division duplex (FDD) timer or a time division duplex (TDD) timer Related to (maxHARQ_Tx-1), where maxHARQ_Tx, the FDD timer, and the TDD timer are configured via a radio resource control or a base station. A mobile communication device, comprising: means for starting a detection window when a tune away from a first radio access technology (RAT) to a second RAT has been detected; Whether a RAT has received a unit including an changed transport block (TB) size and does not include an uplink grant of a new data indicator (NDI) rollover; and is responsive to determining that the first RAT has received An changed TB size and does not include an uplink grant for NDI reversal, while processing the uplink grant and placing a corresponding Radio Link Control (RLC) Protocol Data Unit (PDU) for fast retransmission An RLC retransmits the cells in the queue. The mobile communication device of claim 25, wherein the means for determining whether the first RAT has received an uplink grant comprises: determining whether the first RAT has received an uplink in the detection window The unit of the link license. The mobile communication device of claim 25, further comprising: means for determining whether the detection window is still active; and responsive to determining that the detection window is not active and ignoring the uplink permission unit. The mobile communication device of claim 25, further comprising: means for determining whether a current hybrid automatic repeat request (HARQ) procedure is still active in the detection window; and responsive to determining the current The HARQ program is not active within the detection window, ignoring the unit of the uplink grant. The mobile communication device of claim 25, further comprising: responsive to determining that the first RAT has received an uplink grant that does not include a change TB size or has an NDI rollover, ignoring the uplink grant unit. The mobile communication device of claim 25, wherein a duration of the detection window is at least one active HARQ duration. The mobile communication device of claim 25, wherein a duration of the detection window is determined as a sum of a duration of the handover and at least one active HARQ duration. The mobile communication device according to claim 30 or claim 31, wherein the at least one active HARQ duration is multiplied by a frequency division duplex (FDD) timer or a time division duplex (TDD) timer (maxHARQ_Tx-1) Correspondingly, wherein maxHARQ_Tx, the FDD timer and the TDD timer are configured via a radio resource control or a base station.