WO2022183978A1 - 一种多卡手机实现多个虚拟独立电话系统的方法及装置 - Google Patents

一种多卡手机实现多个虚拟独立电话系统的方法及装置 Download PDF

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WO2022183978A1
WO2022183978A1 PCT/CN2022/077884 CN2022077884W WO2022183978A1 WO 2022183978 A1 WO2022183978 A1 WO 2022183978A1 CN 2022077884 W CN2022077884 W CN 2022077884W WO 2022183978 A1 WO2022183978 A1 WO 2022183978A1
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virtual
systems
mobile phone
card
virtual system
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PCT/CN2022/077884
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English (en)
French (fr)
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傅航宇
金辉
陈高鹏
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翱捷科技股份有限公司
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Publication of WO2022183978A1 publication Critical patent/WO2022183978A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to a virtualization (virtualization) technology of a mobile phone.
  • Virtualization technology abstracts and converts physical resources such as CPU, memory, disk and other physical resources of a physical computer and generates multiple virtual machines, so that each virtual machine has the same functions as the physical computer, so that each virtual machine can be used in each virtual machine. run the operating system independently.
  • the hardware architecture of mobile phones and computers is relatively similar, and the virtualization of mobile phones has also received increasing attention.
  • a multi-SIM phone refers to a phone with multiple SIM cards installed, the most common being a dual-SIM phone. Due to cost and power consumption considerations, multi-card mobile phones are usually implemented based on a single-chip solution, that is, a single application processor (application processor). processor, AP) and a single communication processor (communication processor, CP) integrated on a single chip. How to build multiple virtual machines on a multi-card mobile phone based on limited single-chip hardware resources, so that each SIM card (that is, each communication identity) corresponds to a virtual machine, and users can use the corresponding virtual machine on each virtual machine like a physical mobile phone. The complete communication function of the SIM card (such as telephone, SMS, network, etc.) is a technical problem worthy of study.
  • the technical problem to be solved by this application is to provide a method for implementing multiple virtual independent telephone systems in a multi-card mobile phone.
  • Step S10 constructing a plurality of virtual Android operating systems in the mobile phone with the same number as the SIM card by using the Linux kernel virtualization technology, which is referred to as a virtual system for short.
  • Step S20 Allocate software and hardware resources to each virtual system by the SIM card; this means that the software and hardware resources corresponding to each SIM card are allocated to the corresponding virtual system by the SIM card through the Linux namespace and control grouping; Hardware resources include any one or more of CPU, memory, storage, and binder devices.
  • Step S30 establishing an interaction mechanism between virtual systems; this refers to setting up a virtual network card in each virtual system, and realizing the interaction between different virtual systems through communication between the virtual network cards.
  • Step S40 Solve business coupling between different virtual systems through an agent. The sequence of the step S30 and the step S40 can either be preceded or performed simultaneously.
  • the above method designs a virtualization scheme for a multi-card mobile phone, which can realize multiple virtual systems, each virtual system corresponds to a SIM card and has a complete and independent telephone system with the SIM card.
  • the Linux kernel virtualization technology is LXC
  • LXC is a virtualization system using the control grouping mechanism of the Linux kernel. This is an exemplary preferred implementation.
  • the Linux namespace is an LXC configuration file. This is an exemplary preferred implementation.
  • the modem of the mobile phone is an indivisible hardware resource, and the modem is only allocated to a certain virtual system;
  • the AT module of the mobile phone is a software resource that cannot be divided, and only when the modem has been allocated Create an AT module in the virtual system. This is a description of the processing of indivisible hardware and software resources.
  • the mobile network interface of the mobile phone is an inseparable software resource, and the mobile network interface is only created in the virtual system to which the modem has been allocated. This is a description of the processing of indivisible hardware and software resources.
  • the data service is fixed on one of the SIM cards of the mobile phone, and the data network of the SIM card is shared between multiple virtual systems by means of virtual network card pairs; the virtual system corresponding to the SIM card
  • the mobile network interface of the mobile network performs NAT conversion on the data packets of the other virtual systems; the network parameters of the other virtual systems are set according to the virtual system corresponding to the SIM card.
  • the virtual network card is used to notify the foreground virtual system; the virtual systems will monitor notifications from other virtual systems; when a certain virtual system is located in the background , the events of incoming phone calls and incoming text messages are notified to the front-end virtual system through the interactive mechanism, and the front-end virtual system notifies the user through the human-computer interaction interface; when receiving the background event notification, if the user chooses to view, the front-end and back-end virtual systems are automatically processed. switch. This is a concrete description of the interaction mechanism.
  • step S40 in the virtual system that has been allocated with modem and AT module, the same number of wireless interface layer services as SIM cards are reserved, and a service guardian is added above the wireless interface layer service except ril service0. Process; at the same time, there is only one wireless interface layer service called ril in a virtual system without a modem and an AT module.
  • a service agent is added under the ril service0; all interactions between ril service0 and the AT module or modem of the mobile phone in the virtual system without modem and AT module are transferred through the service agent through the channel of the virtual network card to the assigned The service daemon in the virtual system of the modem and the AT module; the service daemon is then transferred to the corresponding wireless interface layer service below to complete.
  • This is a concrete description of the proxy mechanism.
  • the present application also proposes an apparatus for implementing multiple virtual independent telephone systems in a multi-card mobile phone, including a virtual system construction unit, a resource allocation unit, an interaction unit and an agent unit.
  • the virtual system construction unit is used for constructing a plurality of virtual Android operating systems in the mobile phone with the same number as the SIM card by using the Linux kernel virtualization technology, which is referred to as a virtual system for short.
  • Described resource allocation unit is used for allocating software and hardware resources to each virtual system by SIM card; This refers to by Linux namespace and control grouping, the software and hardware resources corresponding to each SIM card are allocated in corresponding virtual system by SIM card ;
  • the software and hardware resources include any one or more of CPU, memory, storage, and binder devices.
  • the interaction unit is used for establishing an interaction mechanism between virtual systems; this refers to setting up a virtual network card in each virtual system, and realizing interaction between different virtual systems through communication between the virtual network cards.
  • the proxy unit is used to solve the business coupling between different virtual systems through the proxy.
  • the agent unit is used to reserve the same number of wireless interface layer services as the SIM card in the virtual system that has been allocated with modem and AT module, and in addition to ril A service daemon process is added above the wireless interface layer services other than service0; at the same time, there is only one wireless interface layer service called ril in the virtual system without modem and AT module allocated.
  • service0 a service agent is added under the ril service0; all interactions between ril service0 and the mobile phone's AT module or modem in the virtual system without modem and AT module are transferred to the assigned modem through the service agent through the virtual network card link and the service daemon in the virtual system of the AT module; the service daemon is then transferred to the corresponding wireless interface layer service below to complete. This is a detailed description of the proxy unit.
  • the technical effect achieved by the present application is to virtualize a plurality of independent telephone systems with the same number of SIM cards based on the physical hardware resources of a set of multi-card mobile phones under the premise of not requiring hardware virtualization, so that each independent telephone system It can achieve the same use effect and performance as the physical machine.
  • FIG. 1 is a flowchart of an embodiment of a method for implementing two virtual independent telephone systems in a dual-SIM mobile phone according to the present application.
  • FIG. 2 is a schematic diagram of assigning a modem and an AT unit to a certain virtual system.
  • FIG. 3 is a schematic diagram showing that a mobile network interface is allocated to a certain virtual system.
  • FIG. 4 is a schematic structural diagram of an embodiment of an apparatus for implementing two virtual independent telephone systems in a dual-SIM mobile phone according to the present application.
  • 10 is a virtual system construction unit; 20 is a resource allocation unit; 30 is an interaction unit; 40 is an agent unit.
  • This embodiment assumes a dual-card mobile phone running the Android operating system, based on a single-chip solution of a single application processor and a single communication processor.
  • the two SIM cards are called SIM0 and SIM1 respectively.
  • the method for implementing two virtual independent telephone systems on a dual-SIM mobile phone in this embodiment includes the following steps.
  • Step S10 constructing two virtual Android operating systems in the mobile phone through the Linux kernel virtualization technology, which are referred to as virtual systems for short, and are respectively referred to as OS0 and OS1. Subsequently, the two virtual systems are respectively constructed as two independent telephone systems, corresponding to SIM0 and SIM1 respectively.
  • the Linux kernel virtualization technology is, for example, the LXC (Linux Containers, Linux container) technology, and LXC is a virtualization system using the control grouping mechanism of the Linux kernel.
  • Step S20 Allocate software and hardware resources to each virtual system according to the SIM card.
  • the hardware and software resources corresponding to each SIM card are allocated to the corresponding virtual system according to the SIM card through the Linux namespace (namespace) and control group (cgroup).
  • namespace namespace
  • cgroup control group
  • each virtual system can access the software and hardware resources of the corresponding SIM card, and on the other hand, the virtual systems are isolated from each other to ensure the independence and security of the virtual systems.
  • the Linux namespace is, for example, an LXC configuration file.
  • the software and hardware resources include, for example, CPU, memory, storage, binder devices, etc.
  • the binder is an interprocess communication mechanism in the Android system.
  • the modem (modulator-demodulator, modem) of the mobile phone is a hardware resource, and there is only one, and each SIM card is connected. Assign a modem to a certain virtual system (such as OS0), and other virtual systems (such as OS1) cannot directly access it.
  • AT module is used in RILD (radio interface Layer daemon, the wireless interface layer daemon) and the modem carry out AT command interaction, which is a software resource.
  • the AT module is generally deeply coupled with the modem, and it is difficult to divide it according to the SIM card. Therefore, only create the AT module in the virtual system (such as OS0) to which the modem has been allocated. Later, other virtual systems (such as OS1) will be able to share the modem and AT module by proxy.
  • the Mobile Network Interface (Mobile Network Interface) is the data channel for the SIM card to access the Internet and is a software resource. There are many couplings between the mobile network interface and the modem, so the mobile network interface is only created in the virtual system (eg OS0) to which the modem has been allocated. The interaction channel will be built later so that other virtual systems (such as OS1) can also access the mobile network interface.
  • OS0 virtual system
  • Step S30 Establish an interaction mechanism between virtual systems. This refers to setting up a virtual network card in each virtual system, and realizing the interaction between different virtual systems through the communication between the virtual network cards. Specifically, since it is still a single mobile phone physically, there are many scenarios where interaction and communication are required between virtual systems, for example, when two virtual systems need to share some resources, or the background system calls and messages. Since the processes and network spaces between virtual systems are isolated from each other, they cannot interact directly. Therefore, a fast interaction mechanism between virtual systems is constructed based on the virtual network card.
  • virtual network cards that can communicate with each other are created in each virtual system.
  • the virtual network card in the virtual system OS0 is veth0
  • the virtual network card in the virtual system OS1 is veth1.
  • Many dual-card single-chip mobile phone solutions only support one SIM card for data services at the same time; it takes a certain amount of time to switch data services between SIM cards. If the virtual system and the data service of the SIM card are bound, only one virtual system can access the Internet at the same time, which obviously reduces the user experience.
  • the background virtual system also has data service requirements (such as social apps, online downloads, etc.), the data service is fixed on one of the SIM cards, and multiple virtual systems share their data networks through virtual network card pairs.
  • the network data of the app (application program) in OS1 communicates with the virtual network card veth0 in OS0 through the virtual network card veth1, and finally interacts with the external network through the mobile network interface of OS0.
  • This process is transparent to the app in OS1, and is no different from using data services on a single-card mobile phone. From the outside, OS1 is hidden behind the mobile network interface of OS0.
  • the mobile network interface of OS0 needs to perform NAT (network address translation) translation on the data packets of OS1; the DNS (domain name of OS1) System, Domain Name System) and other network parameters also need to be set in the same way as OS0, so that the data network can be accessed normally.
  • NAT network address translation
  • virtual systems listen for notifications from other virtual systems.
  • events such as incoming phone calls and incoming text messages will be notified to the front-end virtual system through an interactive mechanism, and the front-end virtual system will notify the user through the human-computer interaction interface.
  • Step S40 Solve business coupling between different virtual systems through an agent.
  • physical resources such as communication processors are shared, and a considerable part of the signaling and business logic between SIM cards are coupled in some product forms (such as dual standby, single-pass, etc.). These couplings need to be processed to make them transparent to applications on each virtual system, so that the experience of each virtual system communication function is independent.
  • a corresponding ril will be created for each SIM card service (radio interface layer service, wireless interface layer service), thereby providing the functions of each SIM card to the upper-layer app.
  • SIM card service radio interface layer service, wireless interface layer service
  • two ril There will also be a lot of coupling between services, such as the initialization sequence of two SIM cards, the mutual exclusion of data services, etc., both require two rils Coordinate between services.
  • the service proxy (service proxy) is added under service0, and they are all in the RILD of the virtual system (such as OS1) where the modem and AT module are not allocated.
  • the interaction between ril service0 and the AT module or modem of the mobile phone in all virtual systems (such as OS1) that do not have a modem and an AT module allocated are transferred to the mobile phone that has been allocated with a modem and an AT module through the service proxy through the path from veth1 to veth0 of the virtual network card.
  • the service daemon in the virtual system (such as OS0); then by the service The daemon is transferred to the corresponding ril service below (for example, OS1 corresponds to ril service1 in OS0) to complete.
  • OS1 can share access to the AT module and modem of the mobile phone through a proxy; on the other hand, the coupling between ril services of different virtual systems is transferred to ril service1 and ril in the same virtual system OS0 Between service 0, it is equivalent to the two ril services of an ordinary dual-SIM mobile phone, which is much simpler to implement. These are transparent to the app in OS1 using the phone service, and it is no different from the normal operation on a single-card mobile phone.
  • ril service while in ril other than ril service0 A service daemon (service daemon) is added above the service, that is, there are n-1 service daemons, and they are all in the RILD of the virtual system (such as OS0) to which the modem and AT module have been allocated.
  • service daemon service daemon
  • step S30 and the step S40 is not strictly limited, and can be performed either before or at the same time.
  • the method for implementing two single-card virtual machines in a dual-SIM mobile phone proposed in the present application is to implement two virtual systems on the physical hardware resources of a dual-SIM mobile phone based on the Linux kernel virtualization technology without requiring hardware virtualization.
  • Each virtual system simulates an independent telephone system.
  • the two virtual systems can run at the same time, which can realize the sharing of data services between multiple systems, message notification between virtual systems, etc., and supports dynamic front-end and back-end switching, so that each independent telephone system can achieve similar use effects and physical mobile phones. performance.
  • the apparatus for implementing two virtual independent telephone systems on a dual-SIM mobile phone in this embodiment includes a virtual system construction unit 10 , a resource allocation unit 20 , an interaction unit 30 and an agent unit 40 .
  • the virtual system construction unit 10 is used for constructing two virtual Android operating systems in the mobile phone through the Linux kernel virtualization technology, which are referred to as virtual systems for short, and are respectively called OS0 and OS1. If it is extended to other application scenarios, the same number of virtual systems as SIM cards are constructed in a multi-card mobile phone.
  • the resource allocation unit 20 is used for allocating software and hardware resources to each virtual system according to the SIM card. This means that the software and hardware resources corresponding to each SIM card are allocated to the corresponding virtual system according to the SIM card through the Linux namespace and control grouping; the software and hardware resources include any one of CPU, memory, storage, and binder devices or more.
  • the sharing of software and hardware resources is realized between multiple virtual systems by means of interaction and proxy, which is specifically realized by the interaction unit 30 and the proxy unit 40 .
  • the interaction unit 30 is used for establishing an interaction mechanism between virtual systems. This refers to setting up a virtual network card in each virtual system, and realizing the interaction between different virtual systems through the communication between the virtual network cards. Multiple virtual systems share their data networks through pairs of virtual network adapters. When the virtual system in the background calls or texts, it also informs the virtual system in the foreground through the virtual network card.
  • the proxy unit 40 is used to solve the business coupling between different virtual systems through the proxy. This means that the same number of ril services as SIM cards are reserved in a virtual system (such as OS0) that has been allocated with modem and AT modules, and in ril services other than ril service0 Add a service daemon above the service. At the same time, there is only one ril service called ril service0 in a virtual system (such as OS1) without a modem and an AT module. Service proxy is added under service0.
  • ril service0 and the AT module or modem of the mobile phone in all virtual systems (such as OS1) that do not have modems and AT modules assigned are transferred to the virtual system (such as service daemon in OS0); then by service The daemon is transferred to the corresponding ril service below (for example, OS1 corresponds to ril service1 in OS0) to complete.
  • the present application can implement two virtual independent telephone systems on a single-chip dual-card mobile phone, and each telephone system includes a complete communication function. Based on the same principle and idea, the present application can implement multiple independent virtual machines in a multi-card mobile phone, each virtual machine corresponds to a SIM card, and each virtual machine can implement an independent virtual machine including the corresponding SIM card. A telephone system with full communication capabilities.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

本申请公开了一种在多卡手机实现多个虚拟独立电话系统的方法，包括如下步骤。步骤S10：通过Linux内核虚拟化技术在手机中构造出与SIM卡相同数量的多个虚拟系统。步骤S20：按SIM卡分配软硬件资源到每个虚拟系统。步骤S30：建立虚拟系统间的交互机制；这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互。步骤S40：通过代理解决不同虚拟系统间的业务耦合。所述步骤S30、步骤S40的顺序或者任一在前，或者同时进行。上述方法为多卡手机设计了一种虚拟化方案，能够实现多个虚拟系统，每个虚拟系统对应于一张SIM卡并有该SIM卡的完整且独立的电话系统。

Description

一种多卡手机实现多个虚拟独立电话系统的方法及装置 技术领域
本申请涉及一种手机的虚拟化（virtualization）技术。
 背景技术
虚拟化技术是把一台实体计算机的CPU、内存、磁盘等实体资源予以抽象、转换并生成多个虚拟机，使每个虚拟机都有与实体计算机同样的功能，从而可以在每个虚拟机上独立运行操作系统。手机与计算机的硬件架构较为相似，手机的虚拟化也日益受到关注。
移动通信是手机的基础功能，其与手机SIM卡之间是高度关联的。多卡手机是指安装有多张SIM卡的手机，最常见的是双卡手机。出于成本和功耗等考虑，多卡手机通常基于单芯片方案实现，也就是单个应用处理器（application processor，AP）与单个通信处理器（communication processor，CP）集成在单个芯片上。如何基于有限的单芯片硬件资源，在多卡手机上构建多个虚拟机，使每张SIM卡（即每个通信身份）对应一个虚拟机，用户在各虚拟机上可以像实体手机一样使用对应SIM卡的完整通信功能（如电话、短信、网络等），是一个值得研究的技术问题。
 技术问题
本申请所要解决的技术问题是提供一种多卡手机实现多个虚拟独立电话系统的方法。
 技术解决方案
为解决上述技术问题，本申请提出了一种在多卡手机实现多个虚拟独立电话系统的方法，包括如下步骤。步骤S10：通过Linux内核虚拟化技术在手机中构造出与SIM卡相同数量的多个虚拟的安卓操作系统，简称为虚拟系统。步骤S20：按SIM卡分配软硬件资源到每个虚拟系统；这是指通过Linux命名空间和控制分组将每张SIM卡对应的软硬件资源按SIM卡分配到对应的虚拟系统中；所述软硬件资源包括CPU、内存、存储、binder设备中的任一项或多项。步骤S30：建立虚拟系统间的交互机制；这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互。步骤S40：通过代理解决不同虚拟系统间的业务耦合。所述步骤S30、步骤S40的顺序或者任一在前，或者同时进行。上述方法为多卡手机设计了一种虚拟化方案，能够实现多个虚拟系统，每个虚拟系统对应于一张SIM卡并有该SIM卡的完整且独立的电话系统。
进一步地，所述步骤S10中，所述Linux内核虚拟化技术是LXC，LXC是一种使用Linux内核的控制分组机制的虚拟化系统。这是一种示例性的优选实现方式。
进一步地，所述步骤S20中，所述Linux命名空间是LXC配置文件。这是一种示例性的优选实现方式。
进一步地，所述步骤S20中，手机的modem是一种无法分割的硬件资源，将modem仅分配给某一个虚拟系统；手机的AT模块是一种无法分割的软件资源，只在已分配有modem的虚拟系统中创建AT模块。这是对无法分割的软硬件资源的处理说明。
进一步地，所述步骤S20中，手机的移动网络接口是一种无法分割的软件资源，只在已分配有modem的虚拟系统中创建移动网络接口。这是对无法分割的软硬件资源的处理说明。
进一步地，所述步骤S30中，将数据业务固定在手机的其中一张SIM卡上，多个虚拟系统间通过虚拟网卡对的方式共享其该SIM卡的数据网络；该SIM卡对应的虚拟系统的移动网络接口对其余虚拟系统的数据包做NAT转换；其余虚拟系统的网络参数仿照该SIM卡对应的虚拟系统设置。这是对交互机制的具体说明。
进一步地，所述步骤S30中，当位于后台的虚拟系统来电话、来短信时，通过虚拟网卡对通知前台虚拟系统；虚拟系统间会监听来自其他虚拟系统的通知；当某虚拟系统位于后台时，来电话、来短信的事件通过交互机制通知到前台虚拟系统，并由前台虚拟系统通过人机交互界面通知用户；当收到后台事件通知时，如用户选择查看，自动进行前后台虚拟系统的切换。这是对交互机制的具体说明。
进一步地，所述步骤S40中，在已分配有modem和AT模块的虚拟系统中保留与SIM卡相同数量的无线接口层服务，在除ril service0以外的无线接口层服务的上方各增加一个服务守护进程；同时在未分配modem和AT模块的虚拟系统中仅有一个无线接口层服务称为ril service0，在该ril service0下增加了服务代理；所有未分配modem和AT模块的虚拟系统中ril service0和手机的AT模块或modem的交互，都通过服务代理经由虚拟网卡的通路，转给已分配有modem和AT模块的虚拟系统中的服务守护进程；再由服务守护进程转给下方对应的无线接口层服务来完成。这是对代理机制的具体说明。
本申请还提出了一种在多卡手机实现多个虚拟独立电话系统的装置，包括虚拟系统构造单元、资源分配单元、交互单元和代理单元。所述虚拟系统构造单元用于通过Linux内核虚拟化技术在手机中构造出与SIM卡相同数量的多个虚拟的安卓操作系统，简称为虚拟系统。所述资源分配单元用于按SIM卡分配软硬件资源到每个虚拟系统；这是指通过Linux命名空间和控制分组将每张SIM卡对应的软硬件资源按SIM卡分配到对应的虚拟系统中；所述软硬件资源包括CPU、内存、存储、binder设备中的任一项或多项。所述交互单元用于建立虚拟系统间的交互机制；这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互。所述代理单元用于通过代理解决不同虚拟系统间的业务耦合。上述装置为多卡手机设计了一种虚拟化方案，能够实现多个虚拟系统，每个虚拟系统对应于一张SIM卡并有该SIM卡的完整且独立的电话系统。
进一步地，所述代理单元用于在已分配有modem和AT模块的虚拟系统中保留与SIM卡相同数量的无线接口层服务，在除ril service0以外的无线接口层服务的上方各增加一个服务守护进程；同时在未分配modem和AT模块的虚拟系统中仅有一个无线接口层服务称为ril service0，在该ril service0下增加了服务代理；所有未分配modem和AT模块的虚拟系统中ril service0和手机的AT模块或modem的交互，都通过服务代理经由虚拟网卡通路，转给已分配有modem和AT模块的虚拟系统中的服务守护进程；再由服务守护进程转给下方对应的无线接口层服务来完成。这是对代理单元的详细说明。
 有益效果
本申请取得的技术效果是在不需要硬件虚拟化的前提下，基于一套多卡手机的物理硬件资源，虚拟出与SIM卡相同数量的多个独立的电话系统，使每个独立的电话系统都能达到和物理机类似的使用效果和性能。
 附图说明
图1是本申请的在双卡手机实现两个虚拟独立电话系统的方法的一个实施例的流程图。
图2是modem和AT单元分配给某一个虚拟系统的示意图。
图3是移动网络接口分配给某一个虚拟系统的示意图。
图4是本申请在双卡手机实现两个虚拟独立电话系统的装置的一个实施例的结构示意图。
图中附图标记说明：10为虚拟系统构造单元；20为资源分配单元；30为交互单元；40为代理单元。
 本发明的实施方式
下面将以一个具体实施例对本申请的技术方案进行详细说明。该实施例假定一台运行安卓（Android）操作系统的双卡手机，基于单个应用处理器和单个通信处理器的单芯片方案。两张SIM卡分别称为SIM0和SIM1。请参阅图1，该实施例在双卡手机实现两个虚拟独立电话系统的方法包括如下步骤。
步骤S10：通过Linux内核虚拟化技术在手机中构造了两个虚拟的安卓操作系统，简称为虚拟系统，分别称为OS0和OS1。后续将这两个虚拟系统分别构建为两个独立的电话系统，分别对应SIM0和SIM1。所述Linux内核虚拟化技术例如是LXC（Linux Containers，Linux容器）技术，LXC是一种使用Linux内核的控制分组机制的虚拟化系统。
步骤S20：按SIM卡分配软硬件资源到每个虚拟系统。这是指通过Linux命名空间（namespace）和控制分组（cgroup）将每张SIM卡对应的软硬件资源按SIM卡分配到对应的虚拟系统中。一方面各虚拟系统能访问对应的SIM卡的软硬件资源，另一方面各虚拟系统之间相互隔离，确保虚拟系统之间的独立和安全。所述Linux命名空间例如是LXC配置文件。所述软硬件资源例如包括CPU、内存、存储、binder设备等，binder是安卓系统中的一种进程间（interprocess）通信机制。
对于无法分割的软硬件资源，则通过交互和代理的方式，在多个虚拟系统之间实现软硬件资源的共享。后面的步骤S30和步骤S40对此有详细说明。
例如，请参阅图2，手机的modem（modulator-demodulator，调制解调器）是一种硬件资源，只有一个，连接各张SIM卡。将modem分配给某一个虚拟系统（例如OS0），其余虚拟系统（例如OS1）就无法直接访问。AT模块用于在RILD（radio interface layer daemon，无线接口层守护进程）和modem之间进行AT命令交互，是一种软件资源。AT模块一般和modem耦合较深，要按SIM卡进行分割会比较困难，因此只在已分配有modem的虚拟系统（例如OS0）中创建AT模块。后面将通过代理的方式让其余虚拟系统（例如OS1）也能共享modem和AT模块。
又如，请参阅图3，移动网络接口（Mobile Network Interface）是SIM卡上网的数据通道，是一种软件资源。移动网络接口和modem之间耦合较多，因此也只在已分配有modem的虚拟系统（例如OS0）中创建移动网络接口。后面将搭建交互通道让其余虚拟系统（例如OS1）也能访问移动网络接口。
步骤S30：建立虚拟系统间的交互机制。这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互。具体而言，由于物理上仍是单个手机，虚拟系统之间有很多场景是需要交互和通信的，例如两个虚拟系统间需要共享部分资源时、或后台系统来电话和信息等。由于虚拟系统之间的进程和网络空间都是相互隔离的，无法直接交互。因此基于虚拟网卡的方式构建了虚拟系统之间的快速的交互机制。
请参阅图3，在每个虚拟系统中分别创建可以相互通信的虚拟网卡，虚拟系统OS0中的虚拟网卡是veth0，虚拟系统OS1中的虚拟网卡是veth1。很多双卡单芯片手机方案在同一时间只支持一张SIM卡进行数据业务；数据业务在SIM卡间切换需要一定的时间。如果将虚拟系统和SIM卡的数据业务进行绑定，必然导致同一时间只有一个虚拟系统可以上网，这显然会降低用户的使用体验。考虑到后台虚拟系统也有数据业务的需求（如社交app、在线下载等），将数据业务固定在其中一张SIM卡上，多个虚拟系统间通过虚拟网卡对的方式共享其数据网络。OS1中的app（应用程序）的网络数据通过虚拟网卡veth1和OS0中的虚拟网卡veth0通信，最后通过OS0的移动网络接口和外网交互。这个过程对于OS1中的app是透明的，和在单卡手机上使用数据业务没区别。从外部看来，OS1是隐藏在OS0的移动网络接口背后的，OS0的移动网络接口需要对OS1的数据包做NAT（network address translation，网络地址转换）转换；OS1的DNS（domain name system，域名系统）等网络参数也需要仿照OS0设置，才可以正常访问数据网络。
当位于后台的虚拟系统来电话、来短信时，同样需要通过该虚拟网卡对通知前台虚拟系统，且需要做下列改进。第一，虚拟系统间会监听来自其他虚拟系统的通知。当某虚拟系统位于后台时，来电话、来短信等事件会通过交互机制通知到前台虚拟系统，并由前台虚拟系统通过人机交互界面通知用户。第二，当收到后台事件通知时，如用户选择查看，自动进行前后台虚拟系统的切换。
步骤S40：通过代理解决不同虚拟系统间的业务耦合。双卡手机中，通信处理器等物理资源是共享的，且SIM卡之间的信令和业务逻辑在某些产品形态下（如双待单通等）是有相当部分存在耦合的。需要将这些耦合进行处理，使其对各虚拟系统上的应用透明，让每个虚拟系统通信功能的体验上是各自独立的。
请参阅图2，当AT模块和modem都分配给某一个虚拟系统（例如OS0）时，其余虚拟系统（例如OS1）需要共享这些资源。
在不采用虚拟化技术的手机系统中，会为每张SIM卡创建一个对应的ril service（radio interface layer service，无线接口层服务），从而向上层app提供各SIM卡的功能。对于双卡手机（特别是双卡单通方案），两张SIM卡的功能和使用上存在很多的耦合。对应的，两个ril service之间也会有不少耦合，例如两张SIM卡的初始化时序、数据业务的互斥等，都需要两个ril service间进行协调。
而对于采用了虚拟机技术的手机系统中，例如存在两个虚拟系统的情景下，如果简单地把ril service1直接移动到OS1中，把ril service0保留在OS0中，这对于彼此隔离、无法相互访问的两个虚拟系统来说，ril service1和ril service0之间协调会变得异常复杂、低效，很容易导致相应功能无法正常工作。
本申请通过代理的方式来解决上述问题。请参阅图2，在已分配有modem和AT模块的虚拟系统（例如OS0）中保留与SIM卡相同数量的ril service，在除ril service0以外的ril service的上方各增加一个service daemon（服务守护进程），它们都在已分配有modem和AT模块的虚拟系统（例如OS0）的RILD中。同时在未分配modem和AT模块的虚拟系统（例如OS1）中仅有一个ril service称为ril service0，在该ril service0下增加了service proxy（服务代理），它们都在未分配modem和AT模块的虚拟系统（例如OS1）的RILD中。所有未分配modem和AT模块的虚拟系统（例如OS1）中ril service0和手机的AT模块或modem的交互，都通过service proxy经由虚拟网卡veth1至veth0的通路，转给已分配有modem和AT模块的虚拟系统（例如OS0）中的service daemon；再由service daemon转给下方对应的ril service（例如OS1对应OS0中的ril service1）来完成。这样，一方面OS1能通过代理的方式共享访问手机的AT模块和modem；另一方面也让不同虚拟系统的ril service间的耦合转移到了同一个虚拟系统OS0中的ril service1和ril service0之间，等同与一个普通双卡手机的两个ril service，实现起来简单很多。这些对于OS1中的app在使用电话业务都是透明的，和正常在单卡手机上运行没有区别。
如果是多卡手机，例如有n张sim卡，构建了n个虚拟系统；那么本申请的代理方案中，在已分配有modem和AT模块的虚拟系统（例如OS0）中保留与SIM卡相同数量的ril service，同时在除ril service0以外的ril service的上方各增加一个service daemon（服务守护进程），也就是service daemon有n-1个，它们都在已分配有modem和AT模块的虚拟系统（例如OS0）的RILD中。
所述步骤S30、步骤S40的顺序没有严格限制，可以任一在前或同时进行。
本申请提出的双卡手机实现两个单卡虚拟机的方法是在不需要硬件虚拟化的前提下，基于Linux内核虚拟化技术，在双卡手机的物理硬件资源上实现两个虚拟系统。每个虚拟系统模拟一个独立电话系统。两个虚拟系统能同时运行，能实现多系统间数据业务的共享、虚拟系统间的消息通知等，并支持动态前后台切换，使每个独立电话系统都能达到和实体手机类似的使用效果和性能。
下面将以一个具体实施例对本申请的技术方案进行详细说明。该实施例假定一台运行安卓操作系统的双卡手机，基于单个应用处理器和单个通信处理器的单芯片方案。两张SIM卡分别称为SIM0和SIM1。请参阅图4，该实施例在双卡手机实现两个虚拟独立电话系统的装置包括虚拟系统构造单元10、资源分配单元20、交互单元30和代理单元40。
所述虚拟系统构造单元10用于通过Linux内核虚拟化技术在手机中构造了两个虚拟的安卓操作系统，简称为虚拟系统，分别称为OS0和OS1。如果推广到其他应用场景，则是在多卡手机中构造出与SIM卡相同数量的多个虚拟系统。
所述资源分配单元20用于按SIM卡分配软硬件资源到每个虚拟系统。这是指通过Linux命名空间和控制分组将每张SIM卡对应的软硬件资源按SIM卡分配到对应的虚拟系统中；所述软硬件资源包括CPU、内存、存储、binder设备中的任一项或多项。
对于无法分割的软硬件资源，则通过交互和代理的方式，在多个虚拟系统之间实现软硬件资源的共享，这是由交互单元30和代理单元40具体实现的。
所述交互单元30用于建立虚拟系统间的交互机制。这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互。多个虚拟系统间通过虚拟网卡对的方式共享其数据网络。位于后台的虚拟系统来电话、来短信时，也是通过虚拟网卡通知前台虚拟系统。
所述代理单元40用于通过代理解决不同虚拟系统间的业务耦合。这是指在已分配有modem和AT模块的虚拟系统（例如OS0）中保留与SIM卡相同数量的ril service，在除ril service0以外的ril service的上方各增加一个service daemon。同时在未分配modem和AT模块的虚拟系统（例如OS1）中仅有一个ril service称为ril service0，在该ril service0下增加了service proxy。所有未分配modem和AT模块的虚拟系统（例如OS1）中ril service0和手机的AT模块或modem的交互，都通过service proxy经由虚拟网卡通路，转给已分配有modem和AT模块的虚拟系统（例如OS0）中的service daemon；再由service daemon转给下方对应的ril service（例如OS1对应OS0中的ril service1）来完成。
综上所述，本申请可以在基于单芯片双卡手机上实现两个虚拟独立的电话系统，每个电话系统包含完整的通信功能。基于同样的原理与思想，本申请可在多卡手机中实现多个独立的虚拟机，每个虚拟机对应一张SIM卡，每个虚拟机能够实现一个独立的、包含所对应的SIM卡的完整通信功能的电话系统。
以上仅为本申请的优选实施例，并不用于限定本申请。对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种在多卡手机实现多个虚拟独立电话系统的方法，其特征是，包括如下步骤；
    步骤S10：通过Linux内核虚拟化技术在手机中构造出与SIM卡相同数量的多个虚拟的安卓操作系统，简称为虚拟系统；
    步骤S20：按SIM卡分配软硬件资源到每个虚拟系统；这是指通过Linux命名空间和控制分组将每张SIM卡对应的软硬件资源按SIM卡分配到对应的虚拟系统中；所述软硬件资源包括CPU、内存、存储、binder设备中的任一项或多项；
    步骤S30：建立虚拟系统间的交互机制；这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互；
    步骤S40：通过代理解决不同虚拟系统间的业务耦合；
    所述步骤S30、步骤S40的顺序或者任一在前，或者同时进行。
  2. 根据权利要求1所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S10中，所述Linux内核虚拟化技术是LXC，LXC是一种使用Linux内核的控制分组机制的虚拟化系统。
  3. 根据权利要求2所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S20中，所述Linux命名空间是LXC配置文件。
  4. 根据权利要求1所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S20中，手机的modem是一种无法分割的硬件资源，将modem仅分配给某一个虚拟系统；手机的AT模块是一种无法分割的软件资源，只在已分配有modem的虚拟系统中创建AT模块。
  5. 根据权利要求4所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S20中，手机的移动网络接口是一种无法分割的软件资源，只在已分配有modem的虚拟系统中创建移动网络接口。
  6. 根据权利要求5所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S30中，将数据业务固定在手机的其中一张SIM卡上，多个虚拟系统间通过虚拟网卡对的方式共享其该SIM卡的数据网络；该SIM卡对应的虚拟系统的移动网络接口对其余虚拟系统的数据包做NAT转换；其余虚拟系统的网络参数仿照该SIM卡对应的虚拟系统设置。
  7. 根据权利要求1所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S30中，当位于后台的虚拟系统来电话、来短信时，通过虚拟网卡对通知前台虚拟系统；虚拟系统间会监听来自其他虚拟系统的通知；当某虚拟系统位于后台时，来电话、来短信的事件通过交互机制通知到前台虚拟系统，并由前台虚拟系统通过人机交互界面通知用户；当收到后台事件通知时，如用户选择查看，自动进行前后台虚拟系统的切换。
  8. 根据权利要求4所述的在多卡手机实现多个虚拟独立电话系统的方法，其特征是，所述步骤S40中，在已分配有modem和AT模块的虚拟系统中保留与SIM卡相同数量的无线接口层服务，在除ril service0以外的无线接口层服务的上方各增加一个服务守护进程；同时在未分配modem和AT模块的虚拟系统中仅有一个无线接口层服务称为ril service0，在该ril service0下增加了服务代理；所有未分配modem和AT模块的虚拟系统中ril service0和手机的AT模块或modem的交互，都通过服务代理经由虚拟网卡的通路，转给已分配有modem和AT模块的虚拟系统中的服务守护进程；再由服务守护进程转给下方对应的无线接口层服务来完成。
  9. 一种在多卡手机实现多个虚拟独立电话系统的装置，其特征是，包括虚拟系统构造单元、资源分配单元、交互单元和代理单元；
    所述虚拟系统构造单元用于通过Linux内核虚拟化技术在手机中构造出与SIM卡相同数量的多个虚拟的安卓操作系统，简称为虚拟系统；
    所述资源分配单元用于按SIM卡分配软硬件资源到每个虚拟系统；这是指通过Linux命名空间和控制分组将每张SIM卡对应的软硬件资源按SIM卡分配到对应的虚拟系统中；所述软硬件资源包括CPU、内存、存储、binder设备中的任一项或多项；
    所述交互单元用于建立虚拟系统间的交互机制；这是指在每个虚拟系统内设立虚拟网卡，通过虚拟网卡之间的通信实现不同虚拟系统之间的交互；
    所述代理单元用于通过代理解决不同虚拟系统间的业务耦合。
  10. 根据权利要求9所述的在多卡手机实现多个虚拟独立电话系统的装置，其特征是，所述代理单元用于在已分配有modem和AT模块的虚拟系统中保留与SIM卡相同数量的无线接口层服务，在除ril service0以外的无线接口层服务的上方各增加一个服务守护进程；同时在未分配modem和AT模块的虚拟系统中仅有一个无线接口层服务称为ril service0，在该ril service0下增加了服务代理；所有未分配modem和AT模块的虚拟系统中ril service0和手机的AT模块或modem的交互，都通过服务代理经由虚拟网卡通路，转给已分配有modem和AT模块的虚拟系统中的服务守护进程；再由服务守护进程转给下方对应的无线接口层服务来完成。
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