diff --git a/pom.xml b/pom.xml
index 0a5df61..d1e35eb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,6 @@
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
     <version>3.1.0</version>
-    <!--<version>2.3.5.RELEASE</version>-->
     <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>club.joylink</groupId>
@@ -43,6 +42,11 @@
       <artifactId>spring-boot-starter-websocket</artifactId>
     </dependency>
 
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-all</artifactId>
+    </dependency>
+
     <dependency>
       <groupId>com.alibaba.fastjson2</groupId>
       <artifactId>fastjson2</artifactId>
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/FrameHandler.java b/src/main/java/club/joylink/xiannccda/ats/message/FrameHandler.java
new file mode 100644
index 0000000..479ba3d
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/FrameHandler.java
@@ -0,0 +1,34 @@
+package club.joylink.xiannccda.ats.message;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.ByteToMessageCodec;
+import java.util.List;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class FrameHandler extends ByteToMessageCodec<FrameSchema> {
+
+  final XianOccMessagingClient client;
+
+  public FrameHandler(XianOccMessagingClient client) {
+    this.client = client;
+  }
+
+  @Override
+  public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+    super.channelRead(ctx, msg);
+  }
+
+  @Override
+  protected void encode(ChannelHandlerContext channelHandlerContext, FrameSchema frameSchema,
+      ByteBuf byteBuf) throws Exception {
+    log.info("发送消息到OCC");
+  }
+
+  @Override
+  protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf,
+      List<Object> list) throws Exception {
+    log.info("收到OCC消息");
+  }
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/FrameSchema.java b/src/main/java/club/joylink/xiannccda/ats/message/FrameSchema.java
new file mode 100644
index 0000000..c22beed
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/FrameSchema.java
@@ -0,0 +1,27 @@
+package club.joylink.xiannccda.ats.message;
+
+import io.netty.buffer.ByteBuf;
+import java.util.List;
+
+public class FrameSchema {
+
+  /**
+   * (System ID)占1字节，系统中每台计算机均有唯一的System ID, 此处表示发送方的System ID，为0xff。
+   */
+  short systemId;
+  /**
+   * (Total Length) 占2字节，表示每个信息帧中消息的总长度+1字节（Multi-flag）。 最长为1025字节。如果数据长度大于1024字节，剩余的在紧接着的几帧数据中发送。
+   */
+  int totalLength;
+  /**
+   * (Multi-flag)为帧标识位，占1字节，值为0或者1，分别表示下面的意思： 1：表示在这帧数据中，一个完整的消息没有发送结束，有后续帧；
+   * 0：表示在这帧数据中，消息完整发送，没有后续帧。同样，几个消息可合并成一帧数据发送
+   */
+  short multiFlag;
+  /**
+   * 消息内容，最长为1024字节。它可由一个或多个消息组成，也可以是一个消息的一部分。每个消息由消息标识和消息数据组成
+   */
+  ByteBuf packageData;
+
+  List<MessageData> messages;
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/MessageData.java b/src/main/java/club/joylink/xiannccda/ats/message/MessageData.java
new file mode 100644
index 0000000..edfea92
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/MessageData.java
@@ -0,0 +1,18 @@
+package club.joylink.xiannccda.ats.message;
+
+public class MessageData {
+
+  /**
+   * 消息的长度: 时间戳（Time）长度+ 版本号（Version）长度+消息ID（message _id）长度（2字节）+ 消息内容（content）长度。
+   */
+  int length;
+  /**
+   * （4字节，时间戳），为UTC时间
+   */
+  long time;
+  /**
+   * 用来区分协议的版本，本版指定为01H
+   */
+  int version;
+  MessageId msgId;
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/MessageId.java b/src/main/java/club/joylink/xiannccda/ats/message/MessageId.java
new file mode 100644
index 0000000..fb8bacb
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/MessageId.java
@@ -0,0 +1,25 @@
+package club.joylink.xiannccda.ats.message;
+
+public enum MessageId {
+  UNKNOWN(0x0000),
+  /**
+   * 心跳
+   */
+  MESSAGE_POLLING(0x0001),
+  ;
+
+  int val;
+
+  MessageId(int val) {
+    this.val = val;
+  }
+
+  public static MessageId of(int val) {
+    for (MessageId messageId : MessageId.values()) {
+      if (messageId.val == val) {
+        return messageId;
+      }
+    }
+    return MessageId.UNKNOWN;
+  }
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/OccMessageManage.java b/src/main/java/club/joylink/xiannccda/ats/message/OccMessageManage.java
new file mode 100644
index 0000000..fe7cf7f
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/OccMessageManage.java
@@ -0,0 +1,25 @@
+package club.joylink.xiannccda.ats.message;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.springframework.boot.ApplicationArguments;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.stereotype.Component;
+
+/**
+ * OCC客户端管理
+ */
+@Component
+public class OccMessageManage implements ApplicationRunner {
+
+  Map<Integer, XianOccMessagingClient> clientMap = new HashMap<>();
+
+  public void registerClient(XianOccMessagingClient client) {
+    clientMap.put(client.lineId, client);
+  }
+
+  @Override
+  public void run(ApplicationArguments args) throws Exception {
+    // 读取数据配置，创建客户端
+  }
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/TcpClientConnection.java b/src/main/java/club/joylink/xiannccda/ats/message/TcpClientConnection.java
new file mode 100644
index 0000000..a575b63
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/TcpClientConnection.java
@@ -0,0 +1,60 @@
+package club.joylink.xiannccda.ats.message;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class TcpClientConnection {
+
+  boolean autoReconnect = true;
+
+  XianOccMessagingClient client;
+  final String host;
+  final int port;
+
+  volatile boolean connected;
+
+  final EventLoopGroup group;
+  final Bootstrap bootstrap;
+
+  public TcpClientConnection(XianOccMessagingClient client, String host, int port) {
+    this.client = client;
+    this.host = host;
+    this.port = port;
+    this.group = new NioEventLoopGroup();
+    this.bootstrap = new Bootstrap();
+    bootstrap.group(group)
+        .channel(NioSocketChannel.class)
+        .handler(new ChannelInitializer<>() {
+          @Override
+          protected void initChannel(Channel ch) {
+            ch.pipeline().addLast(new FrameHandler(client));
+          }
+        });
+  }
+
+  public void connect() {
+    try {
+      ChannelFuture channelFuture = bootstrap.connect(this.host, this.port).addListener(future1 -> {
+        if (future1.isSuccess()) {
+          log.info("连接到OCC服务: host={}, port={}", this.host, this.port);
+        } else {
+          log.info("连接OCC失败，尝试重连");
+          connect();
+        }
+      });
+      channelFuture.channel().closeFuture().sync();
+    } catch (Exception e) {
+      log.error("与OCC服务连接异常", e);
+    } finally {
+      log.info("关闭eventLoop");
+      group.shutdownGracefully();
+    }
+  }
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/XianOccMessagingClient.java b/src/main/java/club/joylink/xiannccda/ats/message/XianOccMessagingClient.java
new file mode 100644
index 0000000..4110c34
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/XianOccMessagingClient.java
@@ -0,0 +1,62 @@
+package club.joylink.xiannccda.ats.message;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class XianOccMessagingClient {
+
+  final int realTimePortBase = 2600;
+  final int nonRealTimePortBase = 2700;
+  /**
+   * 线路号 实时信息的侦听端口号为2600+line_id，非实时信息的侦听端口号为2700+line_id。
+   * (如对于地铁1号线来说，实时信息的侦听端口号为2601，非实时信息的侦听端口号为2701)
+   */
+  final int lineId;
+  final String host;
+  /**
+   * 实时端口号
+   */
+  final int realTimePort;
+  /**
+   * 非实时端口号
+   */
+  final int nonRealTimePort;
+  /**
+   * 版本号
+   */
+  final int Version = 0x01;
+  /**
+   * 心跳发送间隔
+   */
+  final int heartbeatInterval = 10;
+  /**
+   * 心跳超时
+   */
+  final int heartbeatTimeout = 15;
+
+  final TcpClientConnection connection;
+
+  public XianOccMessagingClient(int lineId, String host) {
+    this.host = host;
+    this.lineId = lineId;
+    this.realTimePort = realTimePortBase + lineId;
+    this.nonRealTimePort = nonRealTimePortBase + lineId;
+    // 创建实时消息连接
+    this.connection = new TcpClientConnection(this, host, this.realTimePort);
+  }
+
+  /**
+   * 连接实时消息服务
+   */
+  public void rtMessageConnect() {
+
+  }
+
+  /**
+   * 连接非实时消息服务
+   */
+  public void nrtMessageConnect() {
+
+  }
+
+}
diff --git a/src/main/java/club/joylink/xiannccda/ats/message/line3/HeartBeatMsg.java b/src/main/java/club/joylink/xiannccda/ats/message/line3/HeartBeatMsg.java
new file mode 100644
index 0000000..255e8cd
--- /dev/null
+++ b/src/main/java/club/joylink/xiannccda/ats/message/line3/HeartBeatMsg.java
@@ -0,0 +1,7 @@
+package club.joylink.xiannccda.ats.message.line3;
+
+import club.joylink.xiannccda.ats.message.MessageData;
+
+public class HeartBeatMsg extends MessageData {
+
+}